HP 8935 CDMA Cellu la r /P CS Ba se Sta t ion
Test Set
R efer en ce Gu id e
F ir m w a r e Ver sion : A.01.00 a n d a b ove
HP Part Number E6380-90019
R e vision A
P r in t ed in U.S.A.
Novem b er 1997
© Copyright 1997 Hewlett-Packard Company
Main Menu
Con t en t s
Product Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
In This Book . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Conventions Used in this Book . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
1. Get t in g St a r t ed
Before Connecting a Radio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Changing the Test Set’s Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Changing the Measurement Screen . . . . . . . . . . . . . . . . . . . . . . . . . 25
Changing the Control Fields . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
How do I Verify that the Test Set is Operating Properly? . . . . . . . . . 31
Instrument Quick Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
2. Op er a t in g Over view
Displaying CDMA Measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Channel Power, Rho, EVM, Average Power . . . . . . . . . . . . . . . . . . . 34
Code Domain Measurements (Power, Timing, Phase) . . . . . . . . . . . 35
Displaying Analog Measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
RF Measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Displaying AF Measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Displaying Analog Measurement Results on a Meter Scale . . . . . . 39
Using Channel Numbers to Set Analyzer and Generator Frequencies 40
Calibrating the Channel Power Measurement . . . . . . . . . . . . . . . . . . 41
Changing the Increment or Decrement Setting. . . . . . . . . . . . . . . . . . 42
Specifying An Increment Value for the Arrow Keys or Knob . . . . . 42
Using the Factor of 10 Increment/Decrement Keys . . . . . . . . . . . . . 42
Using Measurement Limit Indicators . . . . . . . . . . . . . . . . . . . . . . . . . 43
Setting A Measurement Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Averaging Measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
How the Test Set Averages Measurements . . . . . . . . . . . . . . . . . . . 46
Setting an RF Generator/Analyzer Offset . . . . . . . . . . . . . . . . . . . . . . 47
Saving and Recalling Instrument Setups. . . . . . . . . . . . . . . . . . . . . . . 48
Register Names. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Memory Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Instrument Hardware Changes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Using USER Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Using Pre-Defined USER Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Assigning and Releasing USER Keys . . . . . . . . . . . . . . . . . . . . . . . . 52
Replacing Batteries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
3. Over view of t h e Test Set ’s
Bu ilt-In Tools
Using RF Tools Program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Swept Gain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Discrete Freq Insertion Loss . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Swept Insertion Loss . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Swept Return Loss . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Cable Fault . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Replot Data Files . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
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Main Menu
Con ten t s
Transfer Stored Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
SA (spectrum analyzer) Self Calibration ON/OFF . . . . . . . . . . . . . . 65
Catalog PC (Memory) Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
Set Up Printer/Data Collection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
Using the Code Domain Analyzer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Selecting the Code Domain Analyzer’s Controls Menus . . . . . . . . . 67
Using the Spectrum Analyzer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Automatic Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Setting Resolution Bandwidth and Sweep Rate . . . . . . . . . . . . . . . . 68
Selecting the Spectrum Analyzer’s Controls Menus. . . . . . . . . . . . . 69
Using the Voltmeter and Audio Frequency Counter . . . . . . . . . . . . . . 70
Using the Oscilloscope (Scope) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
Selecting the Oscilloscope’s Input . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Selecting the Oscilloscope’s Filters . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Triggering the Oscilloscope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
Using the Oscilloscope’s Marker . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
Using IB_UTIL Programs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
COPY_PL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
FILE_XFER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
RAM_USAGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
Securing a Test Procedure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
Clearing RAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
Using the LISTOPTS (list options) Program . . . . . . . . . . . . . . . . . . . . 77
Using the DEMO Program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
Using the ST_PLT (store or plot) Program . . . . . . . . . . . . . . . . . . . . . 79
4. CDMA Mea su r em en t s - Scr een s
a n d Con t r ol F ield s
CDMA Measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
Average Power Measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
Channel Power Measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
Rho Measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
Error Vector Magnitude (EVM) Measurements . . . . . . . . . . . . . . . . 88
Code Domain Measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
Control Fields for CDMA Measurements . . . . . . . . . . . . . . . . . . . . . . . 93
ADCfs or ADC FS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
Amplitude . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
Analyzer (CDMA analyzer) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
Analyzer (code domain analyzer). . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
Anl Dir . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
Anl Special . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
Auto Zero. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
Car FT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
Chn Pwr Cal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
CW RF Path . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
Data Rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
Data Source. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
Even Sec In . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
4
Main Menu
Con t en t s
Freq Err. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
Gain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
Gen Dir . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
Gen Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
Gen Special . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
Input Atten . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
Input Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
Lvl . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
Meas Intvl . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
Measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104
Num Avgs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104
Ofs Trnsfer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
Output Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
PN Offset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106
Pwr Gain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106
Pwr Intvl . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107
Pwr Scale. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107
Pwr Zero . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107
Qual Event . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108
RF Channel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
RF Gen Freq . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
RF In/Ant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110
Threshold . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110
Time Offset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111
TmOfs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111
Trig Event . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112
Tune Freq . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112
Walsh Chan. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113
5. An a log Mea su r em en t s - Scr een s
a n d Con t r ol F ield s
Analog Measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116
AC Level Measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116
AM Depth Measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116
AF Freq Measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117
DC Level Measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117
Distn (Distortion) Measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . 118
FM Deviation Measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118
Frequency Measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119
Frequency Error Measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119
TX Power Measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120
FM Deviation Measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121
AF Freq (Audio Frequency) Measurement . . . . . . . . . . . . . . . . . . . 121
SINAD Measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122
SNR Measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122
Control Fields for Analog Measurements. . . . . . . . . . . . . . . . . . . . . . 123
AF Anl In. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123
AF Cnt Gate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123
AFGen1 Freq. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124
5
Main Menu
Con ten t s
AFGen1 To . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124
AFGen2 Freq. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125
AFGen2 To . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125
Amplitude . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126
Atten Hold. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126
Audio In Lo . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127
Audio Out . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127
Auto/Norm. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127
Auto Zero. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128
Center Freq . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128
Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128
Cont/Single . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128
De-Emp Gain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129
De-Emphasis. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129
Detector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130
Ext Load R . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131
Filter 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131
Filter 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132
FM Coupling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133
Freq (marker) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133
Gain Cntl. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134
IF Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135
Input Atten . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135
Input Gain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136
Input Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136
Internal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137
Level (div) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137
Lvl (marker) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138
Marker To Peak+ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139
Marker To Peak-. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139
Marker To (spectrum analyzer) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139
Mod In To . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140
No Pk/Avg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140
Normalize . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141
Notch Freq . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141
Notch Gain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142
Offset Freq . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142
Output Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143
Pk Det To . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143
Port/Sweep . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144
Position . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145
Ref Level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146
Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146
RF Channel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147
RF Cnt Gate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147
RF Gen Freq . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148
RF In/Ant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148
Scope To . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149
Sensitivity (RF analyzer) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150
6
Main Menu
Con t en t s
Sensitivity (spectrum analyzer). . . . . . . . . . . . . . . . . . . . . . . . . . . . 150
Settling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 151
Span. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 151
Speaker ALC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152
Speaker Vol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152
Squelch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153
Time. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 154
Time/div . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 154
Track/Fixed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 154
Trig-Delay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 155
Tune Freq . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 156
TX Pwr Meas. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 156
TX Pwr Zero . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157
Vert/div . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 158
Vert Offset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 158
6. Con figu r a tion - Scr een s a n d Con tr ol F ield s
Configuring the Instrument . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 160
Setting the Date and Time. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 160
Changing the Beeper’s Volume . . . . . . . . . . . . . . . . . . . . . . . . . . . . 160
Turning Off User Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 160
Configuring for Printing A Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . 161
Printing a Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 161
Control Fields on the Configuration Screens . . . . . . . . . . . . . . . . . . . 162
Abort Print . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 162
Antenna In . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 162
Base Freq (User Defined). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 163
Beeper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 164
Chan Space (User Defined) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 164
Data Length . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165
Date . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165
Display User Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165
Duplex Out . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 166
Ext Ref In . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 166
FF at End: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 167
FF at Start: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 167
Firmware. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 167
Flow Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 168
Frame Clock Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 169
(Gen)-(Anl) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 169
(Gen)-(Anl) (User Defined) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 169
HP-IB Adrs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170
IBASIC Echo. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170
Inst Echo . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170
Lines/Page: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 171
Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 171
Model: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 171
Notch Coupl . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 171
Opt CDMA TB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172
7
Main Menu
Con ten t s
Parity. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172
Printer Port: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172
Print Title:. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172
Range Hold . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 173
Ref Select. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174
RF Chan Std . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 175
RF Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 176
RF Gen Volts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 176
RF In/Out . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 177
RF Level Offset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 178
RF Offset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 178
Save/Recall . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 179
Serial Baud . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 180
Serial_9 In . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 180
Serial No. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 180
Stop Length . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 181
Time. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 181
Total RAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 181
7. Con n ector s
Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 184
10 MHz REF OUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 184
16 × CHIP CLOCK 19.6608 MHz OUT . . . . . . . . . . . . . . . . . . . . . . 184
ANALOG MODULATION IN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 184
ANT IN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 185
AUDIO IN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 186
AUDIO OUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 187
BASEBAND OUT (I and Q) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 187
Chassis Ground. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 188
CHIP CLOCK 1.2288 MHz OUT . . . . . . . . . . . . . . . . . . . . . . . . . . . 188
DATA IN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 188
DUPLEX OUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 188
EVEN SECOND SYNC IN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189
EXT REF IN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189
EXT SCOPE TRIG IN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189
FRAME CLOCK OUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 190
HP-IB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 190
MEMORY CARD Slot . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 191
PARALLEL PORT 15 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 191
PARALLEL PORT 16 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 191
RF IN/OUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 192
SCOPE MONITOR OUTPUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 192
SERIAL PORTs 9, 10, and 11 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 193
TRIGGER QUALIFIER IN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 194
VIDEO OUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 194
8. Accessor ies, Ma n u a ls, Su p p or t
Modifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 196
8
Main Menu
Con t en t s
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 197
External Monitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 197
Manuals (English and non-English) . . . . . . . . . . . . . . . . . . . . . . . . 197
Test Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 198
Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 198
HP Support for Your Instrument . . . . . . . . . . . . . . . . . . . . . . . . . . . . 199
Getting Help . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 199
Customer Training . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200
9. E r r or Messa ges
General Information About Error Messages . . . . . . . . . . . . . . . . . . . 204
Positive Numbered Error Messages . . . . . . . . . . . . . . . . . . . . . . . . 204
Negative Numbered Error Messages. . . . . . . . . . . . . . . . . . . . . . . . 205
IBASIC Error Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 205
HP-IB Error Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 206
Text Only Error Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 206
The Message Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 207
Non-Recoverable Firmware Error . . . . . . . . . . . . . . . . . . . . . . . . . . 207
Text Only Error Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 208
9
Main Menu
Con ten t s
10
Main Menu
P r od u ct In for m a t ion
11
Main Menu
Manufacturer’s
Declaration
This statement is provided to comply with the requirements of the
German Sound Emission Directive, from 18 J anuary 1991.
This product has a sound pressure emission (at the operator position)
< 70 dB(A).
•
•
•
•
Sound Pressure Lp < 70 dB(A).
At Operator Position.
Normal Operation.
According to ISO 7779:1988/EN 27779:1991 (Type Test).
Herstellerbescheinigung
Diese Information steht im Zusammenhang mit den Anforderungen der
Maschinenlärminformationsverordnung vom 18 J anuar 1991.
•
•
•
•
Schalldruckpegel Lp < 70 dB(A).
Am Arbeitsplatz.
Normaler Betrieb.
Nach ISO 7779:1988/EN 27779:1991 (Typprüfung).
12
Main Menu
Safety
GENERAL
Considerations
This product and related documentation must be reviewed for
familiarization with safety markings and instructions before operation.
This product has been designed and tested in accordance with IEC
Publication 1010, "Safety Requirements for Electronic Measuring
Apparatus," and has been supplied in a safe condition. This instruction
documentation contains information and warnings which must be
followed by the user to ensure safe operation and to maintain the
product in a safe condition.
SAFETY EARTH GROUND
A uninterruptible safety earth ground must be provided from the main
power source to the product input wiring terminals, power cord, or
supplied power cord set.
CHASSIS GROUND TERMINAL
To prevent a potential shock hazard, always connect the chassis ground
terminal to earth ground when operating this instrument from a dc
power source.
SAFETY SYMBOLS
Indicates instrument damage can occur if indicated operating limits are
exceeded. Refer to the instructions in this guide.
!
Indicates hazardous voltages.
Indicates earth (ground) terminal
WARNING
CAUTION
A WAR NING n ot e d e n ot es a h a za r d . It ca lls a tt en t ion to a
p r oced u r e, p r a ct ice, or t h e lik e, w h ich , if n ot cor r ectly
p er for m e d or a d h er ed to, cou ld r esu lt in p er son a l in ju r y. Do n ot
p r oceed b eyon d a WAR NING sign u n t il th e in d ica t ed con d ition s
a r e fu lly u n d e r st ood a n d m et.
A CAUTION note denotes a hazard. It calls attention to an operation
procedure, practice, or the like, which, if not correctly performed or
adhered to, could result in damage to or destruction of part or all of the
product. Do not proceed beyond an CAUTION note until the indicated
conditions are fully understood and met.
13
Main Menu
Safety Considerations for this Instrument
WARNING
Th is p r od u ct is a Sa fet y Cla ss I in st r u m en t (p r ovid ed w it h a
!
p r ote ct ive ea r th in g gr ou n d in cor p or a te d in th e p ow er cor d ).
Th e m a in s p lu g sh a ll on ly b e in ser t ed in a sock et ou t let
p r ovid e d w ith a p r ot ect ive ea r th con t a ct . An y in t er r u p t ion of
th e p r ote ct ive con d u ctor in sid e or ou t sid e of t h e p r od u ct is
lik e ly t o m a k e t h e p r od u ct d a n ger ou s. In t en t ion a l in t er r u p t ion
is p r oh ib it ed .
Do n ot exp ose to or op er a te t h is in st r u m en t in ou td oor
a tm osp h er ic con d it ion s su ch a s d ir e ct r a in , h a il, sleet , sn ow ,
icin g, su n sh in e or w in d . Op e r a t e th is in str u m e n t on ly w it h in its
sp ecified t em p e r a tu r e h u m id it y con d ition s.
!
!
Th is in str u m en t is eq u ip p e d w it h in t er n a l gr ou n d fa u lt cir cu it
in t er r u p t er cla ss A.
•
•
•
Th is d evice d oes n ot p r otect a ga in st e lect r ica l sh ock d u e to
con t a ct w ith b ot h cir cu it con d u ctor s or a fa u lt in su p p ly
w ir in g to p r od u ct .
Do n ot u se ext en sion cor d to con n ect th is p r od u ct t o p ow er
r ecep ta cle. At ten tion -n e p a s u tiliser d e r a llon ge p ou r
r a ccor d er le d ete ct eu r -d isjon ct eu r a la p r ise d e cou r a n t .
R ep la ce cor d se t on ly w ith H P 8120 se r ie s. Att en t ion -
R em p la cer u n iq u e m en t p a r u n cor d on a m ovible n u m e r o
8120.
• Do n ot u se in w et loca t ion . Ne p a s u tilise r d a n s u n
em p la cem en t m ou ille.
WARNING
Wh en ever it is lik ely th a t th e p r ot ection h a s bee n im p a ir ed , th e
in str u m en t m u st b e m a d e in op er a t ive a n d b e secu r ed a ga in st
a n y u n in te n d e d op e r a t ion .
If t h is in st r u m en t is t o b e e n er gized via a n a u tot r a n sfor m e r (for
volta ge r ed u ction ), m a k e su r e t h e com m on te r m in a l is
con n ected to th e ea r th t er m in a l of th e p ow er sou r ce.
If th is p r od u ct is n ot u sed a s sp ecified , t h e p r otection p r ovid ed
by th e e qu ip m e n t cou ld b e im p a ir ed . Th is p r od u ct m u st b e u sed
in a n or m a l con d ition (in w h ich a ll m ea n s for p r ot ection a r e
in t a ct) on ly.
No op er a tor ser vicea b le p a r ts in th is p r od u ct. R efer ser vicin g t o
qu a lified p er son n el. To p r eve n t elect r ica l sh ock , d o n ot r em ove
cover s.
14
Main Menu
Ser vicin g in st r u ct ion s a r e for u se b y q u a lified p e r son n el on ly.
To a void ele ct r ica l sh ock , d o n ot p er for m a n y ser vicin g u n less
you a r e q u a lified t o d o so.
Th e op en in g of cover s or r em ova l of p a r t s is lik ely to exp ose
d a n ger ou s volt a ges. Discon n e ct t h e p r od u ct fr om a ll volt a ge
sou r ces w h ile it is b ein g op en e d .
Ad ju stm e n t s d escr ib ed in t h e m a n u a l a r e p er for m ed w ith
p ow e r su p p lied t o t h e in st r u m en t w h ile p r ot ective cove r s a r e
r em ove d . En er gy a va ila b le a t m a n y p oin t s m a y, if con t a cte d ,
r esu lt in p e r son a l in ju r y.
Th e p ow er cor d is con n ect ed to in t er n a l ca p a cit or s th a t m y
r em a in live for 5 secon d s a fter d iscon n e ct in g t h e p lu g fr om it s
p ow e r su p p ly.
F or Con tin u ed p r otection a ga in st fir e h a za r d , r ep la ce th e lin e
fu se (s) on ly w ith 250 V fu se (s) or t h e sa m e cu r r e n t r a tin g a n d
t yp e (for e xa m p le , n or m a l b low or tim e d ela y). Do n ot u se
r ep a ir e d fu ses or sh or t cir cu ited fu seh old er s. F USE : T 5.0A
CAUTION
Always use the three-prong ac power cord supplied with this product.
Failure to ensure adequate earth grounding by not using this cord may
cause personal injury and/or product damage.
This product is designed for use in Installation Category II and
Pollution Degree 2 per IEC 1010 and IEC 664 respectively. For indoor
use only.
This product has autoranging line voltage input, be sure the supply
voltage is within the specified range.
Ventilation Requirements: When installing the product in a cabinet,
the convection into and out of the product must not be restricted. The
ambient temperature (outside the cabinet) must be less than the
maximum operating temperature of the product by 4° C for every 100
watts dissipated in the cabinet. If the total power dissipated in the
cabinet is greater than 800 watts, then forced convection must be used.
To prevent electrical shock, disconnect instrument from mains (line)
before cleaning. Use a dry cloth or one slightly dampened with water to
clean the external case parts. Do not attempt to clean internally.
Product Markings
CE - the CE mark is a registered trademark of the European
Community. A CE mark accompanied by a year indicated the year the
design was proven.
CSA - the CSA mark is a registered trademark of the Canadian
Standards Association.
15
Main Menu
CERTIFICATION
Hewlett-Packard Company certifies that this product met its published
specifications at the time of shipment from the factory.
Hewlett-Packard further certifies that its calibration measurements
are traceable to the United States National Institute of Standards and
Technology, to the extent allowed by the Institute’s calibration facility,
and to the calibration facilities of other International Standards
Organization members.
WARRANTY
This Hewlett-Packard instrument product is warranted against defects
in material and workmanship for a period of one year from date of
shipment. During the warranty period, Hewlett-Packard Company will
at its option, either repair or replace products which prove to be
defective.
For warranty service or repair, this product must be returned to a
service facility designated by HP. Buyer shall prepay shipping charges
to HP and HP shall pay shipping charges, duties, and taxes for products
returned to HP from another country.
HP warrants that its software and firmware designated by HP for use
with an instrument will execute its programming instructions when
properly installed on that instrument. HP does not warrant that the
operation of the instrument, or software, or firmware will be
uninterrupted or error free.
LIMITATION OF
WARRANTY
The foregoing warranty shall not apply to defects resulting from
improper or inadequate maintenance by Buyer, Buyer-supplied
software or interfacing, unauthorized modification or misuse, operation
outside of the environmental specifications for the product, or improper
site preparation or maintenance.
NO OTHER WARRANTY IS EXPRESSED OR IMPLIED. HP
SPECIFICALLY DISCLAIMS THE IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE.
EXCLUSIVE
REMEDIES
THE REMEDIES PROVIDED HEREIN ARE BUYER’S SOLE AND
EXCLUSIVE REMEDIES. HP SHALL NOT BE LIABLE FOR ANY
DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR
CONSEQUENTIAL DAMAGES, WHETHER BASE ON CONTRACT,
TORT, OR ANY OTHER LEGAL THEORY.
ASSISTANCE
Product maintenance agreements and other customer assistance
agreements are available for Hewlett-Packard products. For any
assistance, contact your nearest Hewlett-Packard Sales and Service
Office.
16
Main Menu
Ta b le 1
R egion a l Sa les a n d Ser vice Offices
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Sales Office
Eastern USA
Sales Office
Midwestern USA
Sales and Service
Hewlett-Packard Company
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Southern USA
Southern USA
Western USA
Sales and Service
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Sales
Service Center
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United States of America
Customer Information Center
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Tel: (800) 752-0900
Sales and Service
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Sales
Sales and Service
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Parts Direct: 1-800-227-8164
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17
Main Menu
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18
Main Menu
P r od u ct Descr ip t ion
The HP 8935 CDMA Cellular/PCS Base Station Test Set offers full
signal generation and analysis capability and support for cellular
frequency bands and international PCS frequency bands.
You can perform the following CDMA measurements using the
Test Set:
•
•
Signal Quality Measurements
•
•
•
•
Rho (ρ)
Time Offset
Frequency Error
Carrier Feedthrough
Code Domain Measurements
•
•
•
Code Domain Power
Code Domain Timing
Code Domain Phase
•
•
•
Average Power
Channel Power
Error Vector Magnitude
The Test Set’s CDMA generator also has the following capabilities:
•
•
Reverse Channel Source with Data Buffer
AWGN (built-in calibrated Eb/No levels)
The Test Set also supports CDMA reference clocks and triggers.
In addition to its CDMA measurements and capabilities, the Test Set
also provides the following analog measurements:
•
•
•
•
•
•
•
•
•
•
•
AC Level
AM Depth
AF Frequency
DC Level
Distortion
Frequency and Frequency Error
Transmitter Power
FM Deviation
Audio Frequency
SINAD
SNR
19
Main Menu
In Th is Book
•
•
Chapter 1, “Getting Started,” on page 23 familiarizes you with the
front panel controls. It introduces the different types of control fields
that are used to make measurements
Chapter 2, “Operating Overview,” on page 33 provides general
information about how to change measurement screens and change
control field settings. This chapter also provides some utility
procedures: calibrating channel power, setting a reference, setting
measurement limits, setting a generator/analyzer offset, averaging
measurements, saving and recalling setups, and using USER keys.
•
•
•
Chapter 3, “Overview of the Test Set’s Built-In Tools,” on page 55
introduces the RFTOOLS program. This program automates some
measurements: cable fault location, swept return loss, swept and
discrete insertion loss, spectrum analyzer self-calibration. The
program also includes utilities for printing and data collection.
Basic operation of the built-in signal strength meter, spectrum
analyzer, oscilloscope, and code domain analyzer is also included in
this chapter.
Chapter 4, “CDMA Measurements - Screens and Control Fields,” on
page 81 explains the measurements that can be made from these
screens and the fields that control the measurement’s parameters.
CDMA measurements include average power measurements,
channel power measurements, rho measurements (including
frequency error, time offset, and carrier feedthrough), EVM
measurements (including phase error and magnitude error), and
code domain measurements (including timing, phase, and power).
Chapter 5, “Analog Measurements - Screens and Control Fields,” on
page 115 explains the measurements that can be made from these
screens and the fields that control the measurement’s parameters.
Analog measurements include ac/dc level, AM depth, AF frequency,
distortion, frequency and frequency error, transmitter power, FM
deviation, SINAD, and SNR.
•
•
•
Chapter 6, “Configuration - Screens and Control Fields,” on page
159 explains the configuration controls for the Test Set.
Chapter 7, “Connectors,” on page 183 describes the function and
physical attributes of each connector on the Test Set.
Chapter 8, “Accessories, Manuals, Support,” on page 195 describes
any available upgrades, accessories, training and support for the
Test Set.
•
Chapter 9, “Error Messages,” on page 203 provides any available
information about error recovery when messages are displayed.
20
Main Menu
Con ven t ion s Used in t h is Book
Screen names are shown as follows: CODE DOM.
Keys are shown in the following typeface: CDMA Gen. Shifted functions
(labeled in blue above the keys) are accessed by pressing and releasing
the blue Shift key, and then the key below the blue label.
Fields and messages displayed on the CRT are shown in the following
typeface: Input Atten.
The term “Test Set” is used to refer to the HP 8935.
The screens shown in this manual may not exactly match the screens
displayed on the Test Set’s CRT. Some differences may be due to control
field settings, while other differences may be due to instrument
revisions.
Which Document is The following documents are part of the HP 8935 document set. Use the
Required?
table to help you decide which document you need.
Ta b le 2
Docu m en t Na viga t ion
Docu m en t
P a r t Nu m b er
Usa ge
CDMA Application Guide
AMPS Application Guide
Reference Guide
E6380-90016
Use this manual for basic CDMA measurements and
for getting started with the Test Set.
E6380-90017
E6380-90019
E6380-90018
E6380-90015
Use this manual for making AMPS base station
measurements.
Use this manual for screen and field descriptions and
general operation information about the Test Set.
Programmer’s Guide
Use this manual to learn HP-IB syntax and for learning
how to program the Test Set.
Assembly Level Repair
Guide
Use this manual to perform calibration on the Test Set
and for general service information.
21
Main Menu
22
Main Menu
1
Get tin g Sta r t ed
•
•
•
•
23
Main Menu
Getting Started
Before Connecting a Radio
Befor e Con n ectin g a R a d io
NOTE
The RF IN/OUT port should be used for all transmitter
tests when the radio is connected directly to the Test Set.
(All UUT transmitter power measurements are made
through this port). Off-the-air measurements can be made
using the ANT IN port.
CAUTION Overpower Damage— Refer to the Test Set’s side panel
for maximum input power level at the RF IN/OUT,
DUPLEX OUT, and ANT IN connectors. Exceeding these
levels can cause permanent instrument damage.
24
Chapter1
Main Menu
Getting Started
Changing the Test Set’s Display
Ch a n gin g t h e Test Set ’s Disp la y
Ch a n gin g t h e Mea su r em en t Scr een
The measurement screen is changed using the titlebar at the top of the
screen and the cursor-control knob, using the
GENERATOR/ANALYZER keys, or by using the UTILS keys. Rotate
the knob to move the cursor from field to field or to change settings.
F igu r e 1-1 Usin g t h e cu r sor -con t r ol Kn ob or Scr een Keys
Push the knob to
make a selection.
Rotate the knob
to move the
Press one of the
GENERATOR/ANALYZER or
UTILS keys for a shortcut to
the measurement or
cursor, or change
settings.
configuration screens.
Titlebar
USER
k1’
SOFTWARE
GENERATOR/ ANALYZER
STATE
Menu
CDMA
Gen
CDMA
Anl
Code
Dom
k1
Preset
Meas
Reset
k2’
k2
Reset
AF Anl
Scope
Pause/
RF
Gen
RF
Anl
Spec
Anl
Hold
Continue
k3’
k3
Save
DATA ENTRY
Recall
Ref Set
Meter
Avg
Incr
Incr
10
Incr
Set
Enter
x
10
7
8
9
6
k4’
k4
ADRS
Local
dB
E
F
Lo Limit
Hi limit
GHz
dBm
Release
k5
4
5
UTILS
PuSelect
B
C
D
%
Prev
MHz
V
Shift
1
2
3
Printer
Config
Print
A
EEX
s
Out of Lock
kHz
mV
0
.
+/-
I/O
Config
Inst
Config
Yes
No
ms
mW
Error
Message
On/Off
ppm
W
%D
dB
Hz
V
V
Cancel
Help
Volume
Squelch
To change the measurement screen
St ep 1. Select the titlebar at the top of the screen (placement of the
titlebar may vary slightly on some screens).
St ep 2. Select the measurement screen from the list of choices.
OR
St ep 1. Press a screen key: CDMA Gen, CDMA Anl, Code Dom, RF Gen, RF Anl,
Spec Anl, AF Anl, Scope, Prev, Inst Config, Help, Printer Config, I/O Config,
Error Message.
AF Anl, Scope, Printer Config, I/O Config, and Error Message
are shifted functions (labeled in blue above a key). You must
press and release the blue Shift key then the key below the blue
label to access the screen (or other function) labeled in blue.
Pressing the Prev key displays the previous screen.
Chapter 1
25
Main Menu
Getting Started
Changing the Test Set’s Display
Ch a n gin g th e Con t r ol F ield s
There are several types of control fields in the Test Set. This section
describes some of the different types of fields.
Un it-of-Mea su r e F ield
Unit-of-measure can be changed to display measurements in different
values or magnitudes. The unit-of-measure field can also be used to
turn a measurement on or off (use the On/Off Yes key).
F igu r e 1-2 Un it -of-Mea su r e F ield
Unit-of-Measure
To change a unit-of-measure field
Step 1. Position the cursor at the unit field on the display.
Step 2. Press a key labeled with a different unit-of-measure
(such as W).
If the new units are valid, the measurement value is displayed
in the unit.
If the new units are not valid, the message Invalid
keystroke.is displayed and the units are not changed.
26
Chapter1
Main Menu
Getting Started
Changing the Test Set’s Display
Un d er lin ed E n t r y F ield
Underlined entry fields provide a choice of two settings (toggle).
F igu r e 1-3 Un d e r lin ed E n t r y F ie ld
Underlined
Entry Field
To Change an underlined entry
St ep 1. Position the cursor at the field.
St ep 2. Push the cursor-control knob or the Enter key to move the
underline under the desired choice.
The underlined setting is immediately activated when
selected.
Chapter 1
27
Main Menu
Getting Started
Changing the Test Set’s Display
On e-of-Ma n y F ield
One-of-many fields display a list of choices when selected.
F igu r e 1-4 On e -of-Ma n y F ield
One-of-Many
Field
Choices:
Chan Pwr
Rho
EVM
Avg Pwr
To make a one-of-many choice
Step 1. Position the cursor at the field.
Step 2. Push the cursor-control knob or the Enter key to display the
choices.
Step 3. Move the cursor through the choices by turning the knob.
Step 4. Push the cursor-control knob or the Enter key to make the
choice.
The choice is immediately activated when selected.
28
Chapter1
Main Menu
Getting Started
Changing the Test Set’s Display
Nu m er ic-E n tr y F ield s
Values for numeric entry fields can be entered and changed using
various methods, depending on your testing needs.
F igu r e 1-5 Nu m er ic-E n tr y F ield
Numeric Entry Field
To change a value
St ep 1. Position the cursor at the field.
St ep 2. Key in the desired number using the DATA ENTRY keys.
St ep 3. Press Enter to select the choice.
OR
St ep 1. Position the cursor at the field.
St ep 2. Push the cursor-control knob (the flashing >> cursor appears).
St ep 3. Turn the knob to increment or decrement the value. (The
current increment value may not be appropriate for your
operation. See See “Changing the Increment or Decrement
Setting” on page 42.)
St ep 4. Push the cursor-control knob or the Enter key to select the
choice.
OR
St ep 1. Position the cursor at the field.
St ep 2. Push the cursor-control knob to highlight the desired choice.
St ep 3. Use the up-arrow or down-arrow keys to increment or
decrement the value.
Chapter 1
29
Main Menu
Getting Started
Changing the Test Set’s Display
Decim a l Va lu es
Decimal values are used for most numeric entry fields. The acceptable
entries for decimal values are 0 through 9, , +/-, and EEX.
The +/- key is used for entering negative numbers.
The EEX key is used to enter values in exponential notation. For
example to enter 10-9 you would enter 1, 0, EEX (Shift, +/-), +/-, 9.
Hexa d ecim a l Va lu es
Hexadecimal (Hex) values are used for entering some signaling
parameters. The acceptable entries values are 0 through 9 and A
through F. No unit-of-measure is associated with these values.
Hexadecimal values are either entered from the keypad (A through F
are shifted functions) or for some fields, values are selected from a list
of choices.
30
Chapter1
Main Menu
Getting Started
How do I Verify that the Test Set is Operating Properly?
H ow d o I Ver ify th a t t h e Test Set is Op er a t in g
P r op er ly?
If your Test Set powers-up and displays the CDMA ANALYZER screen,
but you suspect an instrument problem, use the Instrument Quick
Check to verify operation of the basic instrument functions.
If no failure is indicated by this test, but you still suspect a problem,
refer to the “Performance Tests” information in the Assembly Level
Repair Manual.
In st r u m en t Qu ick Ch eck
St ep 1. Set up the quick check:
a . Remove any connected cables (except for AC or DC power).
b . Turn instrument power on (if it is not already on).
c. Press Preset.
d . Press Inst Config and set the RF Displayfield to Freq.
e. Press CDMA Anl and select the Avg Pwrfield, then select Rho
from the Choices: menu.
f. Set the Tune Freqfield to 800 MHz.
g. Set the Anl Dirfield to Rev.
h . Press CDMA Gen and set the Output Portfield to RF Out.
i. Set the RF Gen Freqfield to 800 MHz.
j. Set the Amplitudefield to −40 dBm
k . Set the Gen Dir. field to Fwd. (The EQ In/Outfield is
displayed.)
St ep 2. Check the following reading:
a . Rho should be greater than 0.96.
St ep 3. Press Spec Anl to access the SPEC ANL screen.
You should see the characteristic CDMA spectrum.
Chapter 1
31
Main Menu
Getting Started
How do I Verify that the Test Set is Operating Properly?
F igu r e 1-6 CDMA Sp ectr u m
32
Chapter1
Main Menu
2
Op er a t in g Over view
•
•
•
•
•
•
•
•
•
•
•
•
33
Main Menu
Operating Overview
Displaying CDMA Measurements
Disp la yin g CDMA Mea su r em en ts
Ch a n n el P ow er , Rh o, EVM, Aver a ge P ow er
You can select channel power, rho, EVM, or average power on the
CDMA ANALYZER or CDMA GENERATOR screen as shown in
For more information about these measurements see "CDMA
Measurements" on page 82.
F igu r e 2-1 Disp la yin g Ch a n n el P ow e r , R h o, E VM, or Aver a ge
P ow er
Choices:
Chan Pwr
Rho
EVM
Avg Pwr
Tim e Offset, F r equ en cy E r r or , Ca r r ier F eed th r ou gh
When you select Rho, the Time Offset, Frequency Error, and
Carrier Feedthrumeasurements are displayed. Time offset and
carrier feedthrough are also displayed on the CODE DOM screen along
with frequency offset.
F r eq u en cy Offset
Frequency offset is displayed on the CODE DOM screen.
Ma gn itu d e Er r or , P h a se Er r or
When you select EVM, the Magnitude Errorand Phase Error
measurements are displayed.
34
Chapter2
Main Menu
Operating Overview
Displaying CDMA Measurements
Cod e Dom a in Mea su r em en t s (P ow er , Tim in g, P h a se)
Code domain measurements are displayed on the CODE DOM screen.
To select a code domain measurement, go to the CODE DOM screen
and select a measurement from the Measurementfield in the Main
controls menu.
For more information about code domain measurements see "Code
Domain Measurements" on page 89.
F igu r e 2-2 Selectin g Cod e Dom a in Mea su r em en ts
Choices:
Power
Fast Pwr
Timing
Phase
Chapter 2
35
Main Menu
Operating Overview
Displaying Analog Measurements
Disp la yin g An a log Mea su r em en ts
RF Mea su r em en t s
F r eq u en cy Er r or , F r equ en cy
RF Frequency Error and RF Frequency are displayed on the RF
ANALYZER, RF GENERATOR, and AF ANALYZER screens.
F igu r e 2-3 Disp la yin g R F F r eq u e n cy E r r or or R F F r e qu en cy,
a n d TX P ow er
Choices:
Freq Error
Frequency
TX
Power
Tr a n sm itt er (TX)P ow er
TX Poweris only measured and displayed here when the Input Port
on the RF ANALYZER screen is set to RF In. If Ant(antenna) is
selected, the measurement is replaced by four dashes (- - - -).
You can measure low power levels on the ANT IN port using the
spectrum analyzer.
Refer to the "TX Power Measurement" field on page 120 and the "TX
Pwr Zero" field on page 157 for more information on measuring
transmitter power.
CAUTION
Connecting a signal of >60 mW to the ANT IN (antenna)
port can cause instrument damage (although internal
protection circuits can typically withstand a
short-duration signal of 1 or 2 Watts). If the overpower
circuit is triggered, remove the signal from the ANT IN
port and turn the Test Set off and on to reset it.
36
Chapter2
Main Menu
Operating Overview
Displaying Analog Measurements
Disp la yin g AF Mea su r em en t s
F M Devia tion , AM Dep th , AC Level
The AF Anl Insetting determines the AF analyzer’s input and the
measurement displayed in the top-right corner of the measurement
GENERATOR, RF ANALYZER, and AF ANALYZER screens.
F igu r e 2-4 Disp la yin g F M Devia tion , AM De p t h , or AC Leve l
Choices:
FM Demod
AM Demod
SSB Demod
Audio In
Ext Mod
FM Mod
AM Mod
Ta b le 2-1 Mea su r em en t s Select ed w it h th e AF An l In field
Mea su r em en t
AF An l In Sett in g
FM Demod, FM Mod
FM Deviation
AM Depth
AC Level
AM Demod, AM Mod
SSB Demod, Audio In, Ext Mod, Audio Out
Chapter 2
37
Main Menu
Operating Overview
Displaying Analog Measurements
SINAD, Dist or tion , SNR , AF F r equ en cy, DC Level,
These measurements are available on the RF GENERATOR,
F igu r e 2-5 Disp la yin g SINAD, Distor tion , SNR , DC Level, or
AF F r eq u e n cy
Choices:
SINAD
Distn
SNR
AF Freq
DC Level
The Distortion measurement is only for a 1 kHz tone.
Selecting SNR (Signal/Noise Ratio) turns off any other audio
measurement. For more information on making this measurement, see
the RF Gen Freq field description, on page 148.
38
Chapter2
Main Menu
Operating Overview
Displaying Analog Measurements
Disp la yin g An a log Mea su r em en t R esu lts on a Met er Sca le
F igu r e 2-6 Disp la yin g th e Mete r Sca le
Unit-of -Measure
Fields
Meters:
On/Off
Lo End
Hi End
Intervals
Measurement results can be displayed on a meter scale. The digital
numeric value is still displayed (but smaller) under the meter scale.
To display the meter scale
St ep 1. Move the cursor to the unit-of-measure field for the
measurement you want displayed on the meter.
St ep 2. Press and release the blue Shift key, then the Incr Set key to
access the meter function.
St ep 3. Select On/Offfrom the Meters: menu (or press the On/Off key).
To set the meter’s end points and scale intervals
St ep 1. Use the knob to select the unit-of-measure field for the
measurement you want displayed on the meter.
St ep 2. Press and release the blue Shift key, then the Incr Set key to
access the meter function.
St ep 3. Select Hi End, Lo End, or Intervalfrom the Meters:menu
and enter the value for your selection, then press the Enter key.
St ep 4. Repeat steps 2 and 3 until you have set the desired
parameters for the meter’s scale.
Chapter 2
39
Main Menu
Operating Overview
Using Channel Numbers to Set Analyzer and Generator Frequencies
Usin g Ch a n n el Nu m b er s to Set An a lyzer a n d Gen er a t or
F r eq u en cies
RF analyzer and RF generator frequencies can be entered by channel
number (the default setting) or by discrete frequencies (in MHz). The
RF Displayfield on the INSTRUMENT CONFIGURE screen controls
which way frequencies are entered. This screen is accessed by pressing
the Inst Config key.
If the RF Displayfield is set to Chanfor channel tuning, you also need
to set the RF Chan Stdfield to indicate the standard for your base
station (such as North American PCS). This automatically sets the
correct frequency offset needed to generate reverse channel signals and
analyze forward channel signals for base stations.
If you do not know the channel number of your base station, but know
the transmit and receive frequencies, set the RF Displayfield to Freq.
You can then enter these frequencies directly for the RF generator and
RF analyzer during tests.
F igu r e 2-7 Con figu r a t ion to Use Ch a n n el Nu m ber s for R F
Gen er a tor a n d An a lyzer Set tin gs
Set the R F Disp la y field to Ch a n
to turn on channel tuning.
Select the R F Ch a n Std field to
display a list of system types.....
..and then select the channel standard
for testing your base stations.
40
Chapter2
Main Menu
Operating Overview
Calibrating the Channel Power Measurement
Ca lib r a t in g t h e Ch a n n el P ow er Mea su r em en t
To calibrate a channel power measurement at the RF IN/OUT port
using the internal CDMA generator
St ep 1. Go to the CDMA ANALYZER screen and choose the Chan Pwr
measurement.
St ep 2. Set the Tune Freqfield (or RF Channelfield) to the center
frequency of your CDMA signal.
St ep 3. Select the Chn Pwr Calfield and wait until the calibration is
complete.
Chapter 2
41
Main Menu
Operating Overview
Changing the Increment or Decrement Setting
Ch a n gin g th e In cr em en t or Decr em en t Sett in g
Sp ecifyin g An In cr em en t Va lu e for t h e Ar r ow Keys or Kn ob
The Incr Set key is used to assign a specific increment value. The
increment value may use different units than the field you are
incrementing/decrementing. For instance; if the RF generator’s
Amplitudesetting is displayed in dBµV, you could increment in units
of dB or mV.
To change the increment/decrement value
Step 1. Move the cursor to the numeric entry field to be changed.
Step 2. Press Incr Set, and enter the desired incremental value and
unit-of-measure using the DATA ENTRY keys.
Step 3. Use the down-arrow and up-arrow keys
or cursor
control knob to increment the field’s value. The field’s value
changes by the value you set for each key press or knob click.
Usin g t h e F a ct or of 10 In cr em en t /Decr em en t Keys
The Incr × 10 and Incr ÷ 10 keys change the increment/decrement value by a
factor of 10.
For example, if you set the increment for Tune Freqto 10 MHz for
every click of the knob or push of the down-arrow or up-arrow keys,
pushing Incr ×10 changes the increment value to 100 MHz.
42
Chapter2
Main Menu
Operating Overview
Using Measurement Limit Indicators
Usin g Mea su r em en t Lim it In d ica t or s
The Lo Limit and Hi Limit functions are used to define a measurement
“window.” You can set a high limit, a low limit, or both. When limits are
assigned, Lo, Hior both are indicated on the screen.
A measurement that goes above or below the defined limits causes
three things to happen:
1. A message appears at the top of the screen indicating a limit was
exceeded.
2. The Loor Hiindicator flashes.
3. The beeper beeps (if it is has been enabled in the INSTRUMENT
CONFIGURE screen).
Limits are helpful when you can’t watch the Test Set’s display while
you are making an adjustment on the equipment you are testing or
repairing. They are also a convenient way of alerting you to long-term
measurement drift.
To set high and low limits
St ep 1. Position the cursor in front of the unit-of-measure for the
measurement for which you are setting limits.
St ep 2. Press and release the Shift key, then the down-arrow key to
access the Lo Limit function, and enter the measurement’s
low-limit value and its unit-of-measure.1
St ep 3. Press and release the Shift key, then the up-arrow key to access
the Hi Limit function, and enter the measurement’s high-limit
1. The fundamental unit for the limits does not have to be the same as the mea-
surement’s units. For instance; when measuring AC Level in Volts, you can set
high and low limits in units of dBm.
Chapter 2
43
Main Menu
Operating Overview
Using Measurement Limit Indicators
To reset or remove limits
To reset a limit that has been exceeded
Step 1. Position the cursor in front of the measurement’s
unit-of-measure.
Step 2. Press and release the Shift key, then the down-arrow (or
up-arrow key) to access the Lo Limit (or Hi Limit) function.
Step 3. Press Enter or Shift then Hold to access the Meas Reset function.
To remove a limit
Step 1. Position the cursor in front of the unit-of-measure for the
assigned limit.
Step 2. Press and release the Shift key, then the down-arrow (or
up-arrow key) to access the Lo Limit (or Hi Limit) function, then
press the On/Off key.
44
Chapter2
Main Menu
Operating Overview
Setting A Measurement Reference
Sett in g A Mea su r em en t R efer en ce
The reference set (Ref Set) function establishes a measurement
reference point. This allows you to make a direct comparison between
two measurement results, or between a measurement standard and the
actual measurement results.
Depending on the type of measurement, referenced measurements are
displayed in one of two ways:
1. Displa yed value = Measurement − Reference. The difference between
the measured value and the reference value is displayed.
or
2. Displa yed va lue = Measurement ÷ Reference. A ratio of the measured
value to the reference value is displayed. This ratio is expressed in
dB.
To set a reference
St ep 1. Position the cursor in front of the unit-of-measure for the
measurement you want to set the reference for.
St ep 2. Press and release the Shift key, then the Incr ÷10 key to access
the Ref Set function.
St ep 3. Enter a reference value, then press Enter. (To use the currently
measured value as a reference, just press Enter.)
St ep 4. The Reference indicator shows that an internal reference has
been set.
St ep 5. To turn the reference off press and release the Shift key, then
the Incr ÷10 key to access the Ref Set function, and then press the
On/Off key.
Chapter 2
45
Main Menu
Operating Overview
Averaging Measurements
Aver a gin g Mea su r em en ts
The Avg (average) function allows you to display the average value of a
number of measurements. You enter the number of measurement
samples used to calculate and display the measurement average. This
dampens the effects of rapidly changing measurements, providing a
more usable measurement display.
To use measurement averaging
Step 1. Position the cursor in front of the measurement’s
unit-of-measure.
Step 2. Press and release the Shift key, then the Incr ×10 key to access
the Avg function.
Step 3. Enter the desired number of measurement samples to be used
for calculating the average, then press the knob or the Enter
key.
or
Press On/Off to use the currently-displayed number of samples.
Step 4. To turn averaging off, position the cursor in front of the
unit-of-measure and press and release the Shift key, then the
Incr ×10 key to access the Avg function, then press the On/Off key.
How t h e Test Set Aver a ges Mea su r em en t s
When the averaging function is first enabled, a numeric average is
calculated and displayed each time a measurement is made. This
continues until the specified number of samples is reached. From that
point on, the averaging function performs an exponential filtering
operation that mimics an RC filter.
Because of the exponential response, any large measurement changes
result in a displayed value that ramps up or down to the actual
measured value.
A measurement reset clears the measurement history for all
measurements and starts the averaging process over. (Press and
release the Shift key then the Hold key (Meas Reset) to reset the
measurement.)
46
Chapter2
Main Menu
Operating Overview
Setting an RF Generator/Analyzer Offset
Sett in g a n R F Gen er a tor /An a lyzer Offset
You can set a fixed frequency offset between the RF generator and the
RF analyzer. This feature is convenient for testing radios with a fixed
transmit/receive frequency offset.
To set an RF Offset
St ep 1. Go to the INSTRUMENT CONFIGURE screen.
St ep 2. Set the RF Displayfield to Freq.
St ep 3. Set the RF Offsetfield to On.
St ep 4. Select the (Gen)-(Anl)field and enter the frequency offset
value.
St ep 5. Go to the RF GENERATOR screen.
St ep 6. Select the RF Gen Freqfield, and rotate the cursor control
knob to vary the RF generator’s frequency.
St ep 7. Go to the RF ANALYZER screen. Notice that the Tune Freq
value changes to maintain the offset between the generator
and the analyzer. (You can use the Prev key to switch between
the generator and analyzer screens.)
Chapter 2
47
Main Menu
Operating Overview
Saving and Recalling Instrument Setups
Sa vin g a n d R eca llin g In str u m en t Setu p s
The save and recall functions allow you to store different instrument
setups and retrieve them later, eliminating the task of re-configuring
the Test Set.
The number of available save registers depends on how many changes
the number of save registers that can be used (typically over 200).
Save/Recall register settings can be saved to internal RAM or to a PC
card. Saving registers to a PC card allows you to “back up” the settings
in case you need to clear them from memory for running large
To save an instrument setup
Step 1. Go to the I/O CONFIGURE screen.
Step 2. Select the storage media using the Save/Recallfield. (The
default is internal memory.)
Step 3. Make any changes to the instrument that you want to save in
a register.
Step 4. Press and release the Shift key then the Recall key to access the
Save function.
Step 5. Use the DATA ENTRY keys or the Save:menu to enter the
register’s name.
To recall an instrument setup
Step 1. Select the I/O CONFIGURE screen.
Step 2. Select the media to recall settings from using the
Save/Recallfield. The default is internal memory.
Step 3. Press Recall.
Step 4. Use the knob to select the desired setup to be recalled from the
Recallmenu.
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Chapter2
Main Menu
Operating Overview
Saving and Recalling Instrument Setups
To remove (clear) an individual save register
St ep 1. Specify where the register is stored using the Save/Recall
field on the I/O CONFIGURE screen.
St ep 2. Press Recall.
St ep 3. Use the knob to position the cursor in front of the register to
be removed from the Recallmenu at the bottom-right of the
screen. The register name and percentage of memory occupied
by that register are indicated at the top of the screen.
St ep 4. Press Yes On/Off. A prompt appears, asking if you want to delete
the save register.
St ep 5. Press Yes On/Off.
To clear all save registers
St ep 1. Press Recall.
St ep 2. Use the knob to position the cursor in front of the *Clr All*
entry in the Recallmenu at the bottom-right of the screen.
St ep 3. Press the knob or press Enter. A prompt appears at the top of
the screen to verify that you want to clear all registers.
St ep 4. Press Yes On/Off.
R egister Na m es
You can use any number, letter, or combination of numbers and letters
as a name for storing instrument settings. For instance; if you want to
save a setup for testing a “Vulcan7” radio, you can save the setting as
“VULCAN7”.
Two register names are reserved for special purposes: POWERON and
BASE.
P OWERON Settin gs
When the Test Set is turned on, it uses a set of instrument setup
parameters specified at the time of manufacture. You can have the
instrument power up in a different state by making the desired changes
to the original settings, and then saving them using the name
POWERON.
The next time the instrument is turned on, the instrument returns to
the state present when you saved the POWERON setting. For instance;
if the SCOPE screen was displayed when POWERON was saved, it is
the screen that is displayed when you turn the instrument on.
Chapter 2
49
Main Menu
Operating Overview
Saving and Recalling Instrument Setups
BASE Settin gs
The BASE register contains any field settings the user has saved that
are different from the instrument preset state. It establishes a
reference point for all future saves. If a base is not saved, the preset
state is used as the reference.
When you save an instrument setup, the new setup is compared to the
base settings, and any differences are stored under the register name
you supply. Because only differences are stored, a much larger number
of instrument setups can be saved than if the contents of every field was
saved.
When you recall an instrument setting, every field is reset to the base
settings. The saved settings are then used to re-establish the desired
instrument setup.
You can define your own base setting. If your desired settings are very
different from the preset values, you may want to change the BASE
register. This will decrease the amount of memory used to save each
setup, and allow you to save many more setups.
CAUTION
Since each save/recall register only contains the
differences between the setup being saved and the present
base register settings, changing the base settings causes
all other saved setups to be erased from memory
(including the POWERON setting if one has been saved).
Unless you consistently change the same fields to the
same value each time you use the instrument, you should
avoid creating your own BASE settings.
Mem or y Con sid er a t ion s
When the Save/Recallfield of the I/O CONFIGURE screen is set to
Internal, programs are saved to the same non-volatile RAM used to
create RAM disk(s) and run IBASIC programs. By saving a large
number of instrument setups, you reduce the amount of RAM available
to run programs. If you get a “memory overflow” message while trying
to load a program, you must clear one or more save/recall registers to
free RAM space.
In st r u m en t H a r d w a r e Ch a n ges
Recalling a saved register that uses a hardware option that has been
removed results in unspecified operation. Re-install the needed option
before attempting to recall the associated register(s).
50
Chapter2
Main Menu
Operating Overview
Using USER Keys
Usin g USER Keys
You can use user keys to move quickly between fields on the same
screen, and to access fields that are not normally available on the
screen you are using.
Local user keys are used to move between settings on the screen that is
displayed. Five local user keys are available for each screen: k1, k2, k3, k4,
and k5. When the user key is pressed, the cursor instantly moves to, and
selects, the assigned field; eliminating the need to turn and push the
knob. Using these keys removes any other local user keys you may have
set up.
Globa l user keys are used to access settings that are not available on
the current screen. Three global user keys are available: k1’, k2’, and k3’.
(Use the Shift key to access the global user keys)
Usin g P r e-Defin ed USER Keys
To Use the Pre-Assigned Local USER Keys
St ep 1. Press and release the Shift key, the k4 key; then the Enter key.
The numbers 1 through 5 appear in front of various fields.
St ep 2. Press the USER keys (k1 to k5) and notice how the cursor
immediately moves to the corresponding field.
St ep 3. To stop using the default user keys, press and release the Shift
key, then the k5 key to access the Release function; then press
the Enter key.
F igu r e 2-8 An E xa m p le of P r e-Assign ed Loca l User Keys
USER
k1’
k1
k2’
k2
k3’
k3
Assign
k4
Release
k5
Chapter 2
51
Main Menu
Operating Overview
Using USER Keys
Assign in g a n d R elea sin g USER Keys
When defining user keys, the Assign function is used to create key
definitions; the Release function removes the definitions. Re-assigning a
user key to a different field automatically releases it from its previous
setting.
To assign local user keys
Step 1. Move the cursor to the field that you want to assign to a local
user key.
Step 2. Press and release the Shift key, then the k4 key to access the
Assign function. Then press a USER key (k1-k5). The user key
number appears in front of the field you assigned it to. (Since
the cursor is at the newly assigned field, the USER key
number is hidden until the cursor is moved.)
To release local user keys
Step 1. Display the screen containing the user key assignment to be
removed.
Step 2. Press and release the Shift key, then the k5 key to access the
Release function; then press the USER key (k1-k5).
To assign global user keys
Step 1. Move the cursor to the field you want to assign a global USER
key to.
Step 2. Press and release the Shift key, then the k4 key to access the
Assign function. Then press Shift and a USER key (k1’- k3’).
Unlike a local user key, the user key number does not appear
at this field; instead, a prompt appears at the top of the screen
confirming the key assignment.
To release global user keys
Step 1. Move the cursor to the field with the global user key assigned
to it.
Step 2. Press and release the Shift key, then the k5 key to access the
Release function. Then press Shift and the user key to be
released.
52
Chapter2
Main Menu
Operating Overview
Replacing Batteries
R ep la cin g Ba tter ies
There are two methods by which the Test Set backs up its RAM. One is
a set of two AA batteries mounted behind the rear panel of the Test Set.
You must periodically change these batteries. The second method of
RAM backup is an internal battery. It is not user serviceable.
CAUTION
Failure to take prompt action may result in loss of RAM
data including IBASIC programs and SAVE / RECALL
states stored in the RAM.
NOTE
Do not use rechargeable batteries.
To change the AA batteries, use the following procedure:
1. Turn off power and unplug the Test Set.
2. Remove the six screws in the rear panel using a TX-15 TORX (R)
screwdriver.
3. Remove the rear cover.
4. Replace the AA batteries.
5. Replace and reconnect the rear panel. Dispose of used batteries
properly.
Chapter 2
53
Main Menu
Operating Overview
Replacing Batteries
54
Chapter2
Main Menu
3
Over view of th e Test Set’s
Bu ilt -In Tools
•
•
•
•
•
•
•
•
•
•
55
Main Menu
Overview of the Test Set’s Built-In Tools
Using RF Tools Program
Usin g R F Tools P r ogr a m
The RF Tools Program resides in the Test Set’s ROM. The following
tests and utility programs are available in this program.
program.
To run the tests or utilities in the RFTOOLS program:
1. Choose the test or utility you want to run from the list of choices.
2. Fill in the parameters that are displayed for each test.
The following tests and utility programs are available in this program.
•
•
•
•
•
•
•
•
•
•
56
Chapter3
Main Menu
Overview of the Test Set’s Built-In Tools
Using RF Tools Program
F igu r e 3-1
Loa d in g a n d R u n n in g R F Tools
Position the cursor at Select Procedure
Location: and select it.
Press Menu to display the Software Menu
screen.
2
1
3
5
Position the cursor at ROM and select it.
Position the cursor at Select Procedure
Filename: and select it.
4
ROM
Position the cursor at Choices: and
select RFTOOLS.
Position the cursor at Run Test and
select it. The Software is now loading.
6
Loading Time:
First time:
approximately
three minutes.
RFTOOLS
XXXXXX
YYYYYY
After first time:
approximately
15 seconds.
Chapter 3
57
Main Menu
Overview of the Test Set’s Built-In Tools
Using RF Tools Program
Sw ep t Ga in
This test measures the gain of a device by sweeping it over the specified
frequency range. In the menu for this test, you can enter the frequency
range over which the device is to be swept, the level into the device from
the DUPLEX OUT port, and the maximum expected gain.
This test requires two 6-dB pads (attenuators). The pads are put on the
Test Set’s ANT IN and DUPLEX OUT ports to reduce impedance
mismatch error at these ports. A reference level is obtained by
connecting a short calibration cable between the pads on the DUPLEX
OUT and ANT IN ports. Next, the test device is added between the
calibration cable and one of the pads, and a measurement is made of the
additional gain from the reference level. The trace of the device gain
over the frequency range swept is displayed. The maximum gain is also
displayed on the screen.
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Chapter3
Main Menu
Overview of the Test Set’s Built-In Tools
Using RF Tools Program
Discr ete F r eq In ser t ion Loss
This test measures the loss of a cable or device at a specified frequency.
This test is the most accurate method for measuring insertion loss. In
the menu for this test, you can enter the discrete frequency and signal
level at which the measurement will be made.
This test requires two 6-dB pads. The pads are put on the ANT IN and
DUPLEX OUT ports on the Test Set to reduce impedance mismatch
error at these ports. A reference level is obtained by connecting a short
calibration cable between the pads on the DUPLEX OUT and ANT IN
ports. Next, the test cable or device is added between the calibration
cable and one of the pads, and a measurement is made of the addition
loss from the reference level. The insertion loss at the specified
frequency is displayed on the screen.
NOTE
The insertion loss at the specified frequency is displayed twice. The
second display is enlarged for easier reading.
Sw ep t In ser t ion Loss
This test measures the loss of a cable or device by sweeping it over the
specified frequency range. In the menu for this test, you can enter the
frequency range over which the cable is to be swept.
This test requires two 6-dB pads. The pads are put on the ANT IN and
DUPLEX OUT ports on the Test Set to reduce impedance mismatch
error at these ports. A reference level is obtained by connecting a short
calibration cable between the pads on the DUPLEX OUT an ANT IN
ports. Next, the test cable or device is added between the calibration
cable and one of the pads, and a measurement is made of the addition
loss from the reference level. The trace of the cable loss over the
frequency range swept is displayed. The average loss is also displayed
on the screen.
Chapter 3
59
Main Menu
Overview of the Test Set’s Built-In Tools
Using RF Tools Program
Sw ep t Ret u r n Loss
This test radiates a test signal when testing antennas or cables with
antennas attached to them. Verify that the level and frequency span
used for the test cannot result in interference to other nearby antennas.
To minimize interference when running the program, set the power
level at the DUPLEX OUT port to the minimum value needed for good
measurement resolution. Set the frequency range carefully.
This test measures the return loss of a cable or device in the swept
mode. A SWR bridge and two 6 dB pads are connected to the Test Set.
The pads are used to reduce impedance mismatch errors between the
SWR bridge and the DUPLEX OUT and ANT IN ports on the Test Set.
You will be prompted at the start of the test to enter the start and stop
frequencies. A reference level is measured first with a short or open on
the DUT port of the SWR bridge. Then the return loss is measured with
the cable or antenna-under-test. The trace showing return loss over the
frequency band selected is displayed on the screen. Measured values for
best and worst case return loss are printed at the top of the screen.
VSWR can be calculated from the return loss.
The following formula can be used to determine the VSWR from the
return loss:
VSWR
–RL
----------
20
1 + 10
VSWR = -----------------------
–RL
1 – 10----------
20
VSWR is sometimes stated as a ratio. For example: 1.2:1 or “one point
two to one” VSWR. The first number in the ratio is calculated from the
Ta b le 3-1
R etu r n Loss (0 t o 20 d B) t o VSWR
Return Loss (dB)
VSWR
0
2
4
6
8
10
12
14
16
18
20
8.7
4.4
3.0
2.3
1.92 1.67 1.50 1.38 1.29 1.22
∞
Ta b le 3-2
R etu r n Loss (20 t o 40 d B) t o VSWR
Return Loss (dB)
VSWR
20
22
24
26
28
30
32
34
36
38
40
1.22
1.17
1.13
1.11 1.08 1.07 1.05 1.04 1.03 1.03 1.02
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Chapter3
Main Menu
Overview of the Test Set’s Built-In Tools
Using RF Tools Program
Estim a tin g An ten n a R et u r n Loss
If you are measuring the return loss of an antenna connected to the end
of a known good feed line, you can determine the approximate return
loss of the antenna by subtracting twice the line loss. For example, if
you measure a return loss of 24 dB and the line is known to have 2 dB
loss, the estimated return loss of the antenna is 20 dB (since there is a
total of 4 dB of loss as the signal is sent to the SWR bridge and reflected
back to the Test Set). This estimate is in error if the coaxial line and
connectors do not have a return loss somewhat greater than 24 dB.
Chapter 3
61
Main Menu
Overview of the Test Set’s Built-In Tools
Using RF Tools Program
Ca ble F a u lt
NOTE
Test Signal Can Cause Interference
When testing cables attached to antennas, test signals will be radiated.
Verify that the signal used for the test cannot result in interference to
another antenna.
This test operates over a wide frequency band. The test will always
operate with a center frequency of 505 MHz. The frequency span
however will be determined by the length of the cable measured. Longer
cables will use a narrower frequency span. The frequency span equals
990 MHz for cables less than 50 feet long and gets narrower as the
cable length increases. It is always safe to assume that the frequency
span is less than or equal to 990 MHz.
This test displays the return loss of a transmission line as a function of
the distance down the line. A frequency-swept signal from the DUPLEX
OUT port is applied through a resistive power divider to the
cable-under-test. Signals reflected from faults in the cable are combined
with the DUPLEX OUT signal in the power divider and applied to the
ANT IN port. The changing interference of the forward and reflected
signals, over the swept frequency band, contains information about the
distance to one or more faults. The software uses a Fast Fourier
Transform (FFT) to convert the frequency domain into the distance
domain. The distance displayed on the Test Set’s CRT is the physical
distance to the fault with correction for the velocity factor of the cable.
Ca b le F a u lt P er for m a n ce
Measurements of the cable fault location can typically be made up to
500 feet on low-loss cables and 300 feet on higher-loss cables.
Resolution of the fault location is approximately 0.4 feet for cable
lengths up to 50 feet and then linearly increases to 4 feet for a 500 foot
cable.
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Chapter3
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Overview of the Test Set’s Built-In Tools
Using RF Tools Program
Select in g Ca b le Typ e
In the menu for this test, you can enter the following information:
•
•
Cable length
Cable length units
•
Pressing the knob toggles the selection between feet and meters.
Cable class
Pressing the knob allows selection of Heliax, RG, and custom
•
•
•
options.
The next menu varies depending on the selection for cable class:
•
If Customis selected, you can enter the cable’s velocity of
propagation constant and attenuation per 100 feet (or meters).
The propagation velocity must be a value between 0 and 1.
•
•
If RGis selected, you can enter the cable type with the example
[RG 58/U = 58]. You must enter a value between 0 and 1000.
If Heliaxis selected, you can enter the cable type. A list of
choices (foam, air, and flex of varying thickness) is displayed. Use
the knob to select the desired cable type.
•
•
Press k1 (or select Begin Test) when all the appropriate entries
have been made.
Connect the cables as instructed, and press k1 (Proceed).
Velocity fa ct or s a n d a tt en u a tion . Cables that use polyethylene
dielectric typically have a propagation velocity of 0.66, cables that use a
teflon dielectric typically have a propagation velocity of 0.70. If the
cable attenuation is unknown, enter 0 dB per 100 feet (or meters).
Entering 0 dB/100 will produce return loss values lower than actual,
but fault distance can be accurately detected.
Chapter 3
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Main Menu
Overview of the Test Set’s Built-In Tools
Using RF Tools Program
Typ ica l ca b le fa u lt r et u r n loss m ea su r em en ts. Return loss is a
ratio of input power to reflected power. For example, if 100 Watts was
applied to a cable and 10 Watts was returned, the return loss is 10 dB
(10 log (100/10)). In the same example, if 1 Watt was returned, the
return loss is 20 dB (10 log (100/1)). Typical return loss measurements
for the cable loss test are listed below:
•
•
•
•
Open-Circuit Cable = 0 dB
Short-Circuit Cable = 0 dB
50-Ohm Terminated Cable = 20 to 30 dB
Antenna = 10 to 20 dB
Return loss measurements below 25 dB should be considered
excellent. For best results, the cable output should be terminated in
50 ohms.
E n ter in g Ca b le Len gt h
The greatest accuracy is obtained when you enter a cable length
slightly greater than the actual cable length, considering length
uncertainty. If you are not sure of the cable length, enter a value 1.5
times the estimated length. Depending on the return loss of the
antenna or device at the end of the cable, you may see a high relative
mismatch displayed at the actual length of the cable.
64
Chapter3
Main Menu
Overview of the Test Set’s Built-In Tools
Using RF Tools Program
R ep lot Da t a F iles
This utility allows you to easily retrieve and display plots which were
previously stored on an SRAM PC card. One or two plots may be
displayed at one time.
No measurements are performed.
Tr a n sfer St or ed Da t a
This utility may be used to easily transfer data collection files (test
results) from an SRAM PC card over the serial or HP-IB port. You do
not need to write an IBASIC program. No measurements are
performed.
SA (sp ect r u m a n a lyzer ) Self Ca libr a t ion ON/OF F
This test allows you to check the status of the Test Set’s spectrum
analyzer, and change the status if you desire.
The RFTOOLS program uses the Test Set’s internal spectrum analyzer
for making network analyzer measurements. The internal spectrum
analyzer performs an automatic self calibration every 5 minutes. This
automatic self calibration insures that the spectrum analyzer operates
within specified limits regardless of the operating temperature.
However, this self calibration can introduce instability in spectrum
analyzer output after the Test Set is operating at a constant
temperature (after approximately 30 minutes).
Each RFTOOLS test includes two parts; calibration and measurement.
If the spectrum analyzer performs a self calibration between the
calibration and measurement of the RFTOOLS test, the spectrum
analyzer automatic self calibration instability will increase RFTOOLS
test measurement error. To avoid this problem, you may use this test to
turn off the spectrum analyzer self calibration. This self calibration
should only be turned off after the unit has reached a constant
powered-on operating temperature (approximately 30 minutes after
power-on). By turning the self calibration off, the measurement
accuracy and stability of RFTOOLS tests will improve.
Chapter 3
65
Main Menu
Overview of the Test Set’s Built-In Tools
Using RF Tools Program
Ca t a log P C (Mem or y) Ca r d
This utility lists all the files contained on the PC card. The PC card that
you want to catalog must be inserted prior to selecting this test.
• LIF file types are denoted by the following prefixes and suffixes:
•
•
•
•
•
c prefix denotes a program code file
l prefix denotes a library file
p prefix denotes a procedure file
_d suffix denotes a data file
_p suffix denotes a plot file
•
DOS file types are denoted by the following suffixes:
•
•
•
•
•
.PGM suffix denotes a program code file
.LIB suffix denotes a library file
.PRC suffix denotes a procedure file
.DAT suffix denotes a data file
.PLT suffix denotes a plot file
Set Up P r in t er /Da t a Collect ion
This utility allows you to collect measurement data using a printer or a
PCMCIA card. The following table shows the parameters that can be
set using this utility. These parameters can also be found on the
PRINTER CONFIGURE screen and the I/O CONFIGURE screen.
Ta b le 3-3
P a r a m et er s for Set Up P r in ter a n d Da t a Collect ion
•
Data Collection
•
Printer
•
Printer
Configuration
•
•
Output
Heading 1
•
•
Off
•
•
Off
Output
Heading 2
•
•
Lines/Page
Serial 9
Serial 9
Form feed at
start of page
•
•
•
•
•
Serial Baud
•
•
•
•
•
Serial Baud
Parity
Parity
•
•
Form feed at
end of page
Data Length
Stop Length
Flow Control
Data Length
Stop Length
Flow Control
HPIB Address
•
•
•
None
•
•
•
None
Xon/Xoff
Hardware
Xon/Xoff
Hardware
•
PCMCIA
•
•
Parallel 15
HPIB 701
66
Chapter3
Main Menu
Overview of the Test Set’s Built-In Tools
Using the Code Domain Analyzer
Usin g th e Cod e Dom a in An a lyzer
The code domain analyzer graphically displays the power, phase, and
timing of the CDMA signal’s 64 Walsh channels. It is a correlated
measurement, requiring an external timing signal, such as the even
second clock or the 16 × chip (19.6608 MHz) clock, to initiate a valid
measurement.
Select in g t h e Cod e Dom a in An a lyzer ’s Con t r ols Men u s
Several levels of menus are used to access the various controls
associated with the code domain analyzer. "Control Fields for CDMA
Measurements" on page 93 provides a description for each field on the
code domain analyzer’s menus. See "CDMA Measurements" on page 82
and the HP 8935 CDMA Base Sta tion Tests Applications Guide for more
information about code domain measurements.
F igu r e 3-2
Cod e Dom a in An a lyzer Men u s
Chapter 3
67
Main Menu
Overview of the Test Set’s Built-In Tools
Using the Spectrum Analyzer
Usin g th e Sp ectr u m An a lyzer
Au t om a t ic Ca lib r a t ion
During operation, the spectrum analyzer pauses for approximately
2 seconds every 5 minutes to recalibrate itself. This does not affect the
accuracy of displayed measurements, but does cause a brief
interruption of the displayed information during the process.
Set t in g R esolu t ion Ba n d w id th a n d Sw eep Ra t e
The resolution bandwidth and sweep rate are determined by the span
setting, and cannot be set independently.
These settings are listed in the following table.
Ta b le 3-4
R ela tion sh ip Bet w een Sp a n , R esolu t ion Ba n d w id t h , a n d Sw eep R a t e
R esolu tion BW
Sp a n
<50 kHz
Sw eep R a te
(k H z)
0.3
28.6 kHz/second
329.0 kHz/second
3.0 MHz/second
21.4 MHz/second
36.3 MHz/second
257.0 MHz/second
1.0 GHz/second
<200 kHz
<1.5 MHz
<3 MHz
1.0
3.0
30.0
30.0
300.0
300.0
<18 MHz
<200 MHz
1 GHz
68
Chapter3
Main Menu
Overview of the Test Set’s Built-In Tools
Using the Spectrum Analyzer
Select in g t h e Sp ect r u m An a lyzer ’s Con t r ols Men u s
Several levels of menus are used to access the various controls
associated with the spectrum analyzer (see "Spectrum Analyzer
"Control Fields for Analog Measurements" on page 123 provides a
description for each field on the spectrum analyzer’s menus.
F igu r e 3-3
Sp e ct r u m An a lyzer Con tr ols Men u s
Chapter 3
69
Main Menu
Overview of the Test Set’s Built-In Tools
Using the Voltmeter and Audio Frequency Counter
Usin g th e Voltm et er a n d Au d io F r eq u en cy Cou n ter
The voltmeter can be used to measure ac and dc voltages. The input to
the voltmeter is determined by the AF Anl Infield on the AF
ANALYZER screen.
To measure external voltages:
1. Select the AF ANALYZER screen.
2. Set the AF Anl In field to Audio In.
3. Set the Audio In Lo field to match the source you are measuring
(600 ohm impedance, floating output amplifier, ground referenced
voltage). See the "Audio In Lo" field on page 127 for more
information.
4. Connect the signal to be measured to the AUDIO IN connector(s).
The AUDIO IN HI connector can be used alone as long as the Audio
In Lofield is set to Gnd. The AUDIO IN LO connector must also be
used if the Audio In Lofield is set to 600 to Hior Float.
•
•
Select DC Levelto display the dc level.
Select AF Freqto display the audio frequency.
F igu r e 3-4
Mea su r in g AC a n d DC Volta ge s
AC Level
Set to
DC Level or
AF Freq.
Set to
Audio In.
Set to match
source.
70
Chapter3
Main Menu
Overview of the Test Set’s Built-In Tools
Using the Oscilloscope (Scope)
Usin g th e Oscilloscop e (Scop e)
The built-in 50 kHz oscilloscope provides
•
•
•
multiple triggering formats (internal and external)
single-shot and pre-trigger viewing for single events
full marker capability with automatic level and time readout
Time/division, volts/division and vertical offset are displayed and can be
changed using the front-panel knob.
Input to the oscilloscope is provided from various sources including
direct inputs to the AUDIO IN (HI and LO) and ANALOG
MODULATION IN connectors. Oscilloscope functions are accessed from
the AF ANALYZER and SCOPE screens.
F igu r e 3-5
FM Demod
In p u ts a n d F ilter s for t h e Oscilloscop e
Controlled by
AF Anl In
field
Controlled by
Scope To
field
Input
AM Demod
SSB Demod
Audio In connector
Ext Mod connector
FM Mod
Filters
To
Scope
De-emp
AM Mod
To
Notch
Scope Monitor
Output connector
Audio Out
Chapter 3
71
Main Menu
Overview of the Test Set’s Built-In Tools
Using the Oscilloscope (Scope)
Select in g th e Oscilloscop e’s In p u t
Step 1. Press Shift, then RF Anl (AF Anl) to select the AF ANALYZER
screen.
Step 2. Select the AF Anl Infield. A list of choices appears.
St ep 3. Select the desired input to the scope:
• FM Demodfor FM demodulated audio from input signals connected
to the RF IN/OUT or ANT IN connectors.
• AM Demodfor AM demodulated audio from input signals connected
to the RF IN/OUT or ANT IN connectors.
• SSB Demod for SSB demodulated audio from input signals
connected to the RF IN/OUT or ANT IN connectors.
• Audio Infor a signal connected to the AUDIO IN connector.
• Ext Modfor a signal connected to the ANALOG MODULATION IN
connector.
• FM Modfor the FM modulated audio from the RF generator section.
• AM Modfor the AM modulated audio from the RF generator section.
• Audio Out for the signal present at the SCOPE MONITOR
OUTPUT connector.
The input to the oscilloscope is displayed on the SCOPE screen.
Select in g th e Oscilloscop e’s F ilter s
St ep 1. Press Shift, then RF Anl (AF Anl) to select the AF ANALYZER
screen.
St ep 2. Select the Scope Tofield. A list of choices should appear.
St ep 3. Select the desired filtering for the signal:
• Inputif you want no filtering (dc coupled)
• Filtersto route the audio to the oscilloscope after passing through
Filters 1 and 2 (ac coupled).
• De-empto route the audio to the oscilloscope after passing through
Filters 1 and 2, and the de-emphasis circuitry (ac coupled).
• Notchto route the audio to the oscilloscope after passing through
Filters #1 and #2, the de-emphasis circuitry, and notch circuitry (ac
coupled).
72
Chapter3
Main Menu
Overview of the Test Set’s Built-In Tools
Using the Oscilloscope (Scope)
Tr igger in g t h e Oscilloscop e
You can control following triggering features of the oscilloscope:
•
•
•
•
•
Trigger external or internal
Automated or normal triggering
Continuous or single shot triggering
Trigger level
Trigger delay
The oscilloscope is triggered using the Trigger menu. Select this menu
with the following procedure:
Ste p 1. Press Shift, then Spec Anl (Scope) to go to the SCOPE screen.
Ste p 2. Select the Controlsfield, then choose Triggerfrom the list
of choices.
Usin g t h e Oscilloscop e’s Ma r k er
The marker is used to help you make measurements with the
oscilloscope. By repositioning the marker, you can measure the level
and time.
The marker is controlled using the marker menu. Select this menu with
the following procedure:
Ste p 1. Press Shift, then Spec Anl (Scope)to go to the SCOPE screen.
Ste p 2. Select the Controlsfield, the choose Markerfrom the list of
choices.
Chapter 3
73
Main Menu
Overview of the Test Set’s Built-In Tools
Using IB_UTIL Programs
Usin g IB_UTIL P r ogr a m s
about the RAM_MANAGER program.
COP Y_P L
The COPY_PL program allows you to copy procedures and libraries
from one PC card to another. See the HP 8935 Programmer’s Guide for
more information about procedures and libraries.
F ILE _XF E R
The FILE_XFER (file transfer) program transfers files on a PC card to a
device attached to either the HP-IB or to SERIAL PORT 9.
RAM_USAGE
The RAM_USAGE program lists the following information about the
Test Set’s RAM:
•
•
•
•
Total RAM installed
RAM disk allocations
Save register allocations
Approximate RAM available for IBASIC programs
74
Chapter3
Main Menu
Overview of the Test Set’s Built-In Tools
Securing a Test Procedure
Secu r in g a Test P r oced u r e
The password option for securing a test procedure is accessed by
loading and running the SECURE_ITROM program. This program is
accessed by running the IB_UTILprogram.
Ste p 1. Select the SOFTWARE MENU screen.
Ste p 2. Select the Select Procedure Location:field and choose
ROM.
Ste p 3. Select the Select Procedure Filename:field.
a . Select IB_UTILfrom the list of programs. Press Run Testto
display a list of procedures; select SECURE_ITand follow
directions to secure the desired information.
Chapter 3
75
Main Menu
Overview of the Test Set’s Built-In Tools
Clearing RAM
Clea r in g R AM
RAM can be cleared using the RAM_MANAGERprogram in the Test Set’s
ROM. This program clears all RAM, including any SAVE/RECALL
registers saved to InternalRAM.
This program is accessed by running the IB_UTILprogram.
St ep 1. Select the SOFTWARE MENU screen.
St ep 2. Select the Select Procedure Location:field and choose
ROM.
St ep 3. Select the Select Procedure Filename:field.
• Select IB_UTILfrom the list of programs. Press Run Testto
display a list of procedures; select RAM_MANAGERand follow
directions to clear RAM.
To preserve the SAVE/RECALL registers, do not use the RAM_MANAGER
program. Instead, load any other test program from a card or from RAM
to clear the previous test program, and then reload the desired test.
See the "Save/Recall" field on page 179, and "Saving and Recalling
Instrument Setups" field on page 48 for more information about
save/recall registers.
76
Chapter3
Main Menu
Overview of the Test Set’s Built-In Tools
Using the LISTOPTS (list options) Program
Usin g th e LISTOP TS (list op t ion s) P r ogr a m
You can list the options that are installed in your Test Set (if any) using
the LISTOPTS program. LISTOPTS also displays the firmware version
of your Test Set.
To run the LISTOPTS program
Ste p 1. Select the SOFTWARE MENU screen.
Ste p 2. Select the Select Procedure Location:field and choose
ROM.
Ste p 3. Select the Select Procedure Filename:field.
Ste p 4. Select LISTOPTSfrom the list of programs.
Ste p 5. Press Run Testto run the program and follow the directions
on the screen.
Chapter 3
77
Main Menu
Overview of the Test Set’s Built-In Tools
Using the DEMO Program
Usin g th e DE MO P r ogr a m
You can use the DEMO program to learn about the capabilities of the
Test Set. This program demonstrates some of the most useful features
of the Test Set.
To run the DEMO program
St ep 1. Select the SOFTWARE MENU screen.
St ep 2. Select the Select Procedure Location:field and choose
ROM.
St ep 3. Select the Select Procedure Filename:field.
St ep 4. Select DEMOfrom the list of programs.
St ep 5. Press Run Testto run the program and follow the directions
on the screen.
78
Chapter3
Main Menu
Overview of the Test Set’s Built-In Tools
Using the ST_PLT (store or plot) Program
Usin g th e ST_P LT (stor e or p lot) P r ogr a m
This program allows you to store a spectrum analyzer, or oscilloscope
trace on PC card or to plot a stored trace from a PC card.
To run the ST_PLT program
Ste p 1. Select the SOFTWARE MENU screen.
Ste p 2. Select the Select Procedure Location:field and choose
ROM.
Ste p 3. Select the Select Procedure Filename:field.
Ste p 4. Select ST_PLTfrom the list of programs.
Ste p 5. Press k1 (Run Test) to run the program and follow the
directions on the screen.
Ste p 6. Press k2 (Show Info) to display the trace’s parameters (such
as frequency, level, span, and so forth).
Chapter 3
79
Main Menu
Overview of the Test Set’s Built-In Tools
Using the ST_PLT (store or plot) Program
80
Chapter3
Main Menu
4
CDMA Mea su r em en ts - Scr een s
a n d Con tr ol F ield s
•
•
•
•
•
•
81
Main Menu
CDMA Measurements - Screens and Control Fields
Average Power Measurements
Average Power Measurements
CDMA Mea su r em en ts
Aver a ge P ow er Mea su r em en ts
Avg P w r
Avg Pwrdisplays the average power level of all signals at the RF
IN/OUT port. The units (watts, volts, or dBm) can be changed by
positioning the cursor in front of the units field and then pressing the
desired units key. (See "Input Port" field on page 136.) Refer to the
HP 8935 CDMA Base Station Tests Applications Guide for more
information about average power measurements.
Scr e en s on w h ich th is m ea su r e m en t is d isp la yed .
•
•
CDMA ANALYZER
CDMA GENERATOR
ADC F S
ADC FSis displayed when average power is measured. ADC FS
indicates how close the measured power level is to the maximum
allowed input level at the RF IN/OUT port for a particular Pwr Gain
setting (on the CDMA ANALYZER screen). Changes to ADC FS can be
made by altering the Pwr Gainfield setting and by altering the signal
level into the RF IN/OUT port. ADC FS should be between −1.0 and −10
dB when the Pwr Gainfield is set to Auto, and can be manually set up
to −0.5 dB when set to Hold. The measurement will be aborted if ADC
FS goes above −0.5 dB. Measurement accuracy may be degraded if ADC
FS goes below −10 dB.
Scr e en s on w h ich th is m ea su r e m en t is d isp la yed .
•
•
CDMA ANALYZER
CDMA GENERATOR
82
Chapter4
Main Menu
CDMA Measurements - Screens and Control Fields
Channel Power Measurements
Channel Power Measurements
Ch a n n el P ow er Mea su r em en ts
Ch a n P w r
Channel power is the absolute power level of the RF signal in a
1.23 MHz bandwidth centered around the RF channel or tune
frequency setting. This measurement must be calibrated using the
Chan Pwr Calfield each time the tune frequency is changed. Refer to
the HP 8935 CDMA Ba se Station Tests Applications Guide for more
information about channel power measurements.
ADC F S
ADC FSis displayed when channel power is measured. ADC FS
indicates how close the measured power level is to the maximum
allowed input level at the RF IN/OUT port for a particular Gainsetting
(on the CDMA ANALYZER screen). Changes to ADC FS can be made
by altering the Gainfield setting and by altering the signal level into
the RF IN/OUT port. ADC FS should be between −1.0 and −10 dB when
the Gainfield is set to Auto, and can be manually set up to −0.5 dB
when set to Hold. The measurement will be aborted if ADC FS goes
above −0.5 dB. Measurement accuracy may be degraded if ADC FS goes
below −10 dB.
Scr ee n s on w h ich t h is m ea su r em en t is d isp la yed .
•
•
CDMA ANALYZER
CDMA GENERATOR
Chapter 4
83
Main Menu
CDMA Measurements - Screens and Control Fields
Rho Measurements
Rho Measurements
Rh o Mea su r em en ts
Rh o
Rho is a measure of CDMA waveform quality which indicates how well
the measured signal (the pilot signal transmitted by the base station
under test) correlates with the ideal reference waveform (the ideal pilot
generated by the Test Set which is mathematically perfect). This
measurement is done through a complex DSP algorithm. Perfect
correlation is when rho is equal to 1. The CDMA standard specifies
0.912 as the minimum accepted performance for CDMA base stations.
To make rho measurements, the base station needs to be configured to
transmit only a pilot signal. The test equipment is then triggered by
any of the selectable CDMA clocks.
Many different things can contribute to rho failure; this is a short list of
them:
•
•
•
•
compression in the linear power amplifier
phase non-linearities (group delay)
F igu r e 4-1 R h o
Power that correlates with ideal
ρ
ꢀ Total Power
Signal Power
ρ
ρ
ꢀ Signal Power + Error Power
0.912
ꢁ
Scr e en s on w h ich th is m ea su r e m en t is d isp la yed .
•
•
CDMA ANALYZER
CDMA GENERATOR
84
Chapter4
Main Menu
CDMA Measurements - Screens and Control Fields
Rho Measurements
Rho Measurements
F r equ en cy Er r or
Frequency error is displayed when the Rhomeasurement is selected.
Frequency error is the difference between the base station’s transmitter
frequency and the frequency you enter in the Tune Freqfield.
Scr ee n s on w h ich t h is m ea su r em en t is d isp la yed .
•
•
CDMA ANALYZER
CDMA GENERATOR
Tim e Offset
Time offset is displayed when the Rhomeasurement is selected. Time
offset is the time difference between the base station’s even second and
the start of the short sequence. It indicates how well your transmitter’s
signal is time-aligned to system time. Time offset is measured at the
base station’s antenna. The displayed value is based on the value
page 106.)
time offset of zero. The beginning of the received data block aligns with
the first pilot PN chip of the reference signal. Zero time offset indicates
that the trigger event to the CDMA Analyzer coincided with the arrival
of the base station signal’s first pilot PN chip.
When the base station’s signal is delayed relative to the trigger event,
time offset will be a positive value. The second example is a
measurement with a positive time offset. The beginning of the data
block will align with a portion of the reference signal toward the end of
a pilot PN sequence. This indicates that the trigger event to the CDMA
Analyzer occurred when the base station was still transmitting a pilot
PN sequence prior to the first pilot PN chip of the expected sequence.
When the base station’s signal is early relative to the trigger event,
time offset will be a negative value. The third example is a
measurement with a negative time offset. The beginning of the data
block will align with a portion of the reference signal after the first pilot
PN chip. This indicates that the trigger event to the CDMA Analyzer
occurred after arrival of the base station signal’s first pilot PN chip.
Scr ee n s on w h ich t h is m ea su r em en t is d isp la yed .
•
•
•
CDMA ANALYZER
CDMA GENERATOR
CODE DOM (Code Domain Analyzer)
Chapter 4
85
Main Menu
CDMA Measurements - Screens and Control Fields
Rho Measurements
Rho Measurements
Ca r r ier F eed t h r ou gh
Carrier feedthrough is displayed when the Rhomeasurement is
selected. Carrier feedthrough is a common cause of bad rho
measurements. Carrier feedthrough is a result of RF carrier signal
feeding through the I/Q modulator and getting on the output circuitry
without getting modulated. A good carrier feedthrough level is lower
than −25 dB (such as −29 dB).
As shown in the diagram, a perfect constellation is offset by the
magnitude of the carrier feedthrough. In the frequency domain, carrier
feedthrough can show up as an uncorrelated energy spike that can be
seen on the spectrum analyzer by closely scanning the top of the trace.
The effects of carrier feedthrough can also show up as higher noise
levels on the CODE DOM screen. The inactive Walsh codes will be
pushing the −27 dB specification for noise. Carrier feedthrough can be
caused by the lack of isolation across the mixer and cavity of the
transmitter’s I/Q modulator. Shielding can help reduce carrier
feedthrough.
F igu r e 4-3 Ca r r ie r F ee d t h r ou gh
1
Am p lit u de
Ca r r ier F ee dt h r ou gh
I
d
e
a
l
)
S ign a l P ow er + E r r or P ow e r
or igin
F r equ en cy
I/Q Dom a in
F r equ en cy Dom a in
Scr ee n s on w h ich t h is m ea su r em en t is d isp la yed .
•
•
•
CDMA ANALYZER
CDMA GENERATOR
CODE DOM (Code Domain Analyzer)
Chapter 4
87
Main Menu
CDMA Measurements - Screens and Control Fields
Error Vector Magnitude (EVM) Measurements
Error Vector Magnitude (EVM) Measurements
E r r or Vect or Ma gn itu d e (E VM) Mea su r em en t s
EVM
EVMis a measurement of the accuracy of the phase and amplitude of the
QPSK (Quadrature Phase Shift Keying) or Offset QPSK (OQPSK)
modulation. Expressed as a percentage, it is the RMS magnitude value
of the error vector which connects the ideal signal phasor to a measured
signal phasor at the detection decision points.
F igu r e 4-4 Com p on e n ts of Er r or Vector Ma gn itu d e
Q
Magnitude Error
I
evm1.ds4
The magnitude of this error vector represents the “error” between the
ideal signal and the measured signal.
As part of the measurement, the signal is corrected for clock delay,
carrier frequency, carrier phase, and amplitude scaling.
Scr e en s on w h ich th is m ea su r e m en t is d isp la yed .
•
•
CDMA ANALYZER
CDMA GENERATOR
Ma gn itu d e E r r or
Magnitude Erroris the difference in the RMS magnitude value (in
percent) between the ideal signal phasor and the compensated,
measured signal phasor at the detected decision points.
P h a se E r r or
Phase Erroris the RMS value of the difference in phase (degrees)
between the ideal signal phasor and the compensated, measured signal
phasor at the detection decision points.
88
Chapter4
Main Menu
CDMA Measurements - Screens and Control Fields
Code Domain Measurements
Code Domain Measurements
Cod e Dom a in Mea su r em en t s
The following measurements are displayed on the CODE DOM (code
domain analyzer) screen: power, fast power, timing and phase.
Measurements are selected from the Measurementfield on the Main
controls menu.
Time offset (Tm Ofs) and frequency offset (FreqOfs) are always
displayed when any code domain measurement is made. Carrier
feedthrough (CarFT) is also displayed except when fast power is
measured.
Code Domain Power
Other users & noise
Synch
Paging
Frequency Domain
Pilot
User #2
User #1
freq
1.2288 MHz
Code Domain
Walsh Code
0
1
2
3
4
5
6
7
8
9
32
63
User User
User
3
Paging
Pilot
Synch
1
2
Chapter 4
89
Main Menu
CDMA Measurements - Screens and Control Fields
Code Domain Measurements
Code Domain Measurements
Cod e Dom a in P ow er (P ow er )
Code domain power displays the power in each of the 64 Walsh
channels, relative to the total power inside 1.23 MHz bandwidth
centered at the tune frequency. The 64 Walsh codes (0 through 63) are
represented by a vertical bar on the analyzer’s display. Because this is a
relative measurement, the unit-of-measure is always dB. This allows a
comparison of signal levels between the pilot, sync, paging and traffic
channels. (Pilot is about two-thirds of the total energy.)
F igu r e 4-5 R ea d in g Cod e Dom a in P ow er
Walsh 0
(Pilot)
Marker
Set to
Marker.
Select the Walsh
channel.
Read code
domain power.
Scr e en s on w h ich th is m ea su r e m en t is d isp la yed .
•
CODE DOM (Code Domain Analyzer)
90
Chapter4
Main Menu
CDMA Measurements - Screens and Control Fields
Code Domain Measurements
Code Domain Measurements
F a st P ow er
Fast power is a faster method of measuring code domain power. A value
for Time Offset must be transferred from a non-fast power
measurement before fast measurements begin, or when changes to any
of the following fields occur: Data Rate, PN Offset, CDMA TB, Synth
Ref.
The number of measurement averages can be entered in the Num Avgs
field on the FP Setup menu. This number is used to calculate and
display successive code domain power measurements.
Scr ee n s on w h ich t h is m ea su r em en t is d isp la yed .
•
CODE DOM (Code Domain Analyzer)
Cod e Dom a in Tim in g (Tim in g)
Code domain timing is the difference in time between pilot (Walsh 0)
and other Walsh codes with the same forward CDMA channel. In the
CODE DOM screen, this measurement is indicated as positive or
negative bar with the size of the bar indicating how far ahead or behind
the other Walsh channels are relative to the pilot. Signals above the
reference are leading in time; signals below the reference are lagging.
Scr ee n s on w h ich t h is m ea su r em en t is d isp la yed .
•
CODE DOM (Code Domain Analyzer)
Chapter 4
91
Main Menu
CDMA Measurements - Screens and Control Fields
Code Domain Measurements
Code Domain Measurements
Cod e Dom a in P h a se (P h a se)
Code domain phase is the difference in phase between the pilot and
other code channels (Walsh codes) within the same forward CDMA
channel. It displays the phase error for each of the 64 Walsh channels
relative to the pilot channel (Walsh 0). This measurement is indicated
as positive or negative bars on the Test Set’s CODE DOM screen. The
size of the bar indicates how much the phase of other Walsh codes lead
or lag the pilot. Signals above the reference are leading in phase;
signals below the reference are lagging.
F igu r e 4-6 Cod e Dom a in Tim in g a n d P h a se
Scr e en s on w h ich th is m ea su r e m en t is d isp la yed .
•
CODE DOM (Code Domain Analyzer)
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ADCfs or ADC FS
Amplitude
Con t r ol F ield s for CDMA Mea su r em en ts
ADCfs or ADC F S
ADCfs indicates how close the measured power level is to the maximum
allowed input level for the analyzer’s Analog-to-Digital Converter
(ADC). This level is affected by the Gainsetting on the CODE DOM
screen, the Input Atten, Gain, and, Pwr Gainsettings on the CDMA
ANALYZER screen, and the RF level of the signal connected to the Test
Set.
For best measurement performance, ADCfs should be between −1.0 and
−10 dB. The measurement will be aborted if ADCfs goes above 0 dB.
Measurement accuracy may be degraded if ADCfs goes below −10 dB.
Scr een s on w h ich t h is field is p r esen t
CODE DOM (Code Domain Analyzer) screen: gain controls menu
CDMA ANALYZER (ADC FS)
CDMA GENERATOR (ADC FS)
Am p litu d e
This field sets the output level of the RF generator to the RF IN/OUT or
DUPLEX OUT port. Use the DUPLEX OUT port for signal levels
greater than −26 dBm.
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CDMA GENERATOR
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Analyzer (CDMA analyzer)
Analyzer (code domain analyzer)
An a lyzer (CDMA a n a lyzer )
The Analyzerfield controls three functions:
• Arm Measarms the CDMA analyzer. The CDMA analyzer needs to
be armed only when Single(see below) is selected.
• Single/Contselects between “single” measurements and
“continuous” measurements.
•
When Singleis chosen, you must arm each measurement by
selecting the Arm Measfield (see above).
•
When Cont(continuous) is chosen, measurements are
automatically armed.
The default selection is Cont.
• Disarmdisarms the CDMA analyzer during single operation. To
stop continuous measurements, select Single. Selecting Disarm
does not prevent the analyzer from being re-armed during
continuous measurements
Scr een s on w h ich th is field is p r esen t
CDMA ANALYZER
An a lyzer (cod e d om a in a n a lyzer )
This field is used to arm or disarm measurements when making a
single measurement (does not affect continuous measurements).
Selecting Disarmstops the analyzer during a single measurement.
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COD DOM (Code Domain Analyzer): main controls menu
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Anl Dir
Auto Zero
An l Dir
This field is used to select the type of signal (forward or reverse link) to
analyze.
• Fwdsets the analyzer to look for base station transmitter data
(forward link).
• Revsets the analyzer to look for mobile transmitter data (reverse
link).
Default selection: Fwd
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CDMA ANALYZER
An l Sp ecia l
Analyzer special modes change how IQ modulated signals are analyzed.
• Normalsets the CDMA generator and CDMA analyzer to create and
analyze signals with standard rotation.
• Invertedsets reverse rotation for I and Q signals; opposite to the
direction specified in the IS-95 standards. In this mode, the CDMA
generator creates reverse-rotation IQ signals and the CDMA
analyzer expects reverse-rotation IQ signals.
Scr een s on w h ich t h is field is p r esen t
CDMA ANALYZER
Au t o Zer o
This field is displayed for average power measurements.
Autois used to automatically zero the average power measurement
periodically during operation.
Manualis used to override the Autofeature. When Manualis selected,
you must manually zero the average power measurement by selecting
the Pwr Zerofield.
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CDMA ANALYZER
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CDMA Measurements - Screens and Control Fields
Car FT
Chn Pwr Cal
Ca r F T
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COD DOM (Code Domain Analyzer)
Ch n P w r Ca l
This field is displayed when the channel power measurement is
selected. It is used to calibrate the channel power measurement. When
this field is selected, an internally generated calibration signal is
measured using the average power technique. Channel power is also
measured and a correction factor is generated. This correction factor is
applied to subsequent channel power measurements. Calibration
should be performed whenever a new set of measurements is made and
whenever the frequency of the measured signal is changed. See
"Calibrating the Channel Power Measurement" on page 41 for more
information.
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CDMA ANALYZER
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Controls
Controls
Con t r ols
Code domain analyzer settings are arranged into several menus that
are accessed using the Controlsfield. The control groups are:
• Mainaccesses the RF In/Ant, Tune Freq (or RF Channel),
Measurement, and Analyzerfields.
• Markercontrols the marker to look at the level of individual Walsh
channels.
• Triggeraccesses the trigger controls: Qual Eventand Trig
Event.
• Auxaccesses the PN Offset, measurement Threshold, and
measurement Intervalfields.
• Gainlets you alter the gain into the CDMA analyzer while reading
the ADCfsvalue.
• FP Setupaccesses the offset transfer and number of averages fields
used to make fast power measurements.
Many of these controls are duplicates from the CDMA ANALYZER and
CDMA GENERATOR screens.
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COD DOM (Code Domain Analyzer): all menus
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CDMA Measurements - Screens and Control Fields
CW RF Path
Data Rate
CW R F P a t h
This field selects the path for the RF generator’s signal.
• Bypassdisables the IQ modulator. This mode is used when
generating standard AM, FM, or CW signals in the Test Set.
• IQenables the IQ modulator.
Scr een s on w h ich th is field is p r esen t
CDMA GENERATOR
Da t a Ra t e
This field allows receiver testing at data rates of 9.6 or 14.4 Kbps.
If the data buffer is the selected data source, and the data rate is
changed, the transmission state will change to Idle. Select Sendto
resume data output at the new rate.
Choices
•
•
14.4 Kbps
9.6 Kbps
Default selection: 9.6 Kbps
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Data Source
Data Source
Da t a Sou r ce
This field selects where the baseband quadrature spreader gets its
data. This field is removed when the Gen Modefield is set to Noise.
• Zeroesuses a data stream of all 0’s that is not encoded before being
applied to the baseband quadrature spreader and output.
• Extuses external data from the DATA IN connector. This data is not
encoded before being applied to the baseband quadrature spreader.
• Randomuses 300 frames of random, error-free data. (See Data Buff
(below) for Single/Cont, Idle/Sendoperation.)
• Data Buffuses data previously loaded into the data buffer. You can
load your own data into the buffer over HP-IB. This data is encoded
before baseband quadrature spreading. Choosing this selection
displays these additional fields:
•
Single/Cont
• Singlecauses the data stream to be output once when Send
is selected.
• Contcauses the data stream to be repeated continuously when
Sendis selected. Changing to single operation while sending
causes the data to be interrupted after the current 20 ms
frame.
•
Send/Idle
• Sendcauses the data stream to be output after two rising
edges of the internal 80 ms clock are detected.
• Idleindicates that data from the buffer is not being
transmitted. Selecting Idlewhile sending data interrupts the
data at the completion of the current 20 ms frame. A data
stream of all zeroes (encoded) continues to be transmitted after
the initial data stream is interrupted. This is different from
the Zeroesselection above where the data is not encoded.
• Start Framespecifies the first frame of data to send.
• # of Framesspecifies how many frames of data to send.
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CDMA GENERATOR
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Even Sec In
Gain
Even Sec In
This field controls the internal connection of the EVEN SECOND
SYNC IN connector to the CDMA analyzer.
•
When Enableis selected, signals applied to the EVEN SECOND
SYNC IN connector synchronize the timing circuits.
•
When Notis selected, input signals applied to the EVEN SECOND
SYNC IN are ignored. This mode may be useful when signals other
than an even-second clock are used for synchronization. For
example, when using a one-second clock, you would select Notafter
synchronization to prevent the internal even-second clock from being
retriggered half-way through its cycle.
Scr een s on w h ich th is field is p r esen t
CDMA ANALYZER
CDMA GENERATOR
F r eq Er r
This measurement display field displays the frequency offset (frequency
this measurement.
Scr een s on w h ich th is field is p r esen t
COD DOM (Code Domain Analyzer)
Ga in
This field sets the IF gain of the CDMA analyzer for rho, EVM, and
channel power measurements. (Range: 0 dB to 36 dB in 6 dB steps.)
Gain is adjusted two ways:
• Automeasures the signal level and automatically adjusts the gain.
• Holddisables automatic operation to allow you to manually enter
the desired gain by selecting the current gain setting and entering a
new value using the keypad or cursor control knob.
This field is replaced by the Pwr Gainfield when measuring average
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CDMA Analyzer
COD DOM (Code Domain Analyzer): gain controls menu
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Gen Dir
Gen Mode
Gen Dir
This field sets the link direction of the CDMA signal.
• Fwd(forward) sets the CDMA generator to produce QPSK
modulation to imitate a base station. The EQ Filterfield is
automatically set to EQ Into apply an equalizing filter to the I and
Q paths as part of the baseband filtering, but it can be changed to
Out.
• Rev(reverse) sets the CDMA generator to produce OQPSK
modulation to imitate a mobile station. The EQ Filterfield is
automatically set to Out(and cannot be changed) to remove the
equalizing filter from the I and Q paths.
Scr een s on w h ich t h is field is p r esen t
CDMA GENERATOR
Gen Mod e
This field selects the type of modulation information sent to the CDMA
generator’s IQ modulator.
• Dataallows data to be transmitted to simulate a traffic channel with
• Eb/Nocauses a combination of data and White Gaussian Noise
(AWGN) noise to be transmitted. The value entered is the ratio
between the energy of each information bit (Eb) and the noise
spectral density (No), expressed in dB.
• Noisecauses a signal modulated by White Gaussian Noise to be
generated. The noise is band limited to 2 MHz and white inside a
1.25 MHz bandwidth centered around the RF Gen Freq. This
selection removes the Data Source, Start Frame, and # of
Framesfields from the screen; those fields are only used with the
Dataand Eb/Noentries.
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CDMA GENERATOR
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Gen Special
Input Atten
Gen Sp ecia l
Generator special modes change how IQ modulated signals are
generated.
• Normalsets the CDMA generator and CDMA analyzer to create and
analyze signals with standard rotation.
• Invertedsets reverse rotation for I and Q signals; opposite to the
direction specified in the IS-95 standards. In this mode, the CDMA
generator creates reverse-rotation IQ signals and the CDMA
analyzer expects reverse-rotation IQ signals.
Scr een s on w h ich th is field is p r esen t
CDMA GENERATOR
In p u t Att en
This field controls the RF attenuators of the Test Set. If an ADC
Overdrivenmessage is displayed at the top of the screen while
making measurements, increase the attenuator setting until the
message is no longer displayed. This is the coarse level adjustment for
the signal level into the CDMA analyzer. Fine level adjustment is
performed using the Gainfield.
NOTE
The Input Attensetting does not affect, and is not
displayed with, the average power measurement.
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CDMA ANALYZER
CODE DOM (Code Domain Analyzer): gain controls menu
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Input Port
Meas Intvl
In p u t P or t
This field selects which Test Set port to use as the RF input. This field
is not displayed when measuring average power, since you must use the
RF IN/OUT port to measure average power.
CAUTION
Instrument Damage
To prevent instrument damage, do not exceed the
maximum power level labeled at the connectors on your
Test Set. The ANT IN connector is for measuring low level
RF signals. High level (>60 mW) transmitter signals must
be measured using the RF IN/OUT port.
Scr een s on w h ich t h is field is p r esen t
CDMA ANALYZER
CODE DOM (Code Domain Analyzer): main controls menu
Lvl
This measurement displays the relative level of the selected Walsh
channel when compared to the total power in a 1.23 MHz bandwidth
centered around the Tune Freqsetting. The measurement is displayed
when the code domain analyzer’s main controls Measurementfield is
set to Poweror Fast Pwr.
Scr een s on w h ich t h is field is p r esen t
COD DOM (Code Domain Analyzer): marker controls menu
Mea s In t vl
This field determines the length of the data block. The data block is a
time record over which correlated measurements are computed. As the
interval is increased, measurement time is increased. Increasing the
interval gives more accurate measurement results, particularly with
frequency error and phase error measurements.
This field is displayed on the CDMA ANALYZER screen when a rho or
EVM measurement is selected. It is also displayed on the CODE DOM
(Code Domain Analyzer) controls menu.
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CDMA ANALYZER
CODE DOM (Code Domain Analyzer): controls menu
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Measurement
Num Avgs
Mea su r em en t
This field controls the type of code domain measurement to make:
power, timing, or phase. It also controls the measurement "mode."
• Singleis used when you want to make one measurement. You must
select the Arm Measfunction of the Analyzerfield before a
measurement can be made.
• Contis used to continuously make measurements. Measurements
are automatically re-armed after each measurement.
Scr een s on w h ich th is field is p r esen t
COD DOM (Code Domain Analyzer): main controls menu
Nu m Avgs
The number of averages determines how many measurements are
averaged when measuring fast power. Averaging reduces measurement
speed.
Scr een s on w h ich th is field is p r esen t
COD DOM (Code Domain Analyzer): fast power setup controls menu
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Ofs Trnsfer
Output Port
Ofs Tr n sfer
This field transfers the time offset value from the time offset
measurement (displayed in TmOfs) to the Time Offsetfield
automatically. Before selecting Ofs Trnsfer, you must make at least
one of the following code domain measurements:
•
•
•
Power
Timing
Phase
Op er a t in g Con sid er a t ion s
When using this command programmatically, be sure a value for Tm
Ofshas been obtained from a power, timing, or phase measurement.
(One method of ensuring the measurement has been completed would
be to send an HP-IB command to query the results of the Tm Ofsfield
before sending the transfer command).
Scr een s on w h ich t h is field is p r esen t
COD DOM (Code Domain Analyzer): fast power setup controls menu
Ou t p u t P or t
This field selects the output port for the signal from the Test Set’s RF
and CDMA generators.
RF Outselects the RF IN/OUT connector.
Duplselects the DUPLEX OUT connector.
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CDMA GENERATOR
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PN Offset
Pwr Gain
P N Offset
Use this field to enter the PN sequence offset index for your base
station. Each whole offset is equal to 64 chips (= 52.08 µs). Fractional
values are rounded off, and can be entered, in increments of 0.015625
(1 chip). Once entered, this value is shared by all CDMA screens.
This value is used by the analyzer when the Even Sec Infield on the
CDMA GENERATOR screen is set to Enable.
NOTE
When the Even Sec Infield is set to Not, changes to the
PN Offsetfield have no effect on the analyzer.
Scr een s on w h ich th is field is p r esen t
CDMA ANALYZER
CDMA GENERATOR
CODE DOM (Code Domain Analyzer): auxiliary controls menu
P w r Ga in
This field is used to set the level into the CDMA analyzer when making
average power measurements. Levels are set in 6 dB increments. The
IF signal level is displayed as ADC FS when average power is
measured, and should be between −1.0 and −5 dB for best measurement
results.
• Autoautomatically sets the gain for an ADC FS value in the range
of −1 to −5 dB. This is the recommended mode of operation.
• Holdlets you override the automatic setting to manually set the
gain.
This field is only displayed when an average power measurement is
selected.
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CDMA ANALYZER
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Pwr Intvl
Pwr Zero
P w r In tvl
This field determines the length of the data block when measuring
average power. The data block is a time record over which correlated
measurements are computed.
Range: 0.25 to 5.00 ms
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CDMA ANALYZER
P w r Sca le
The upper part of this field is used to select the reference level for power
measurements (relative to the total power of the entire CDMA
channel). The reference is the top line of the screen and defaults to
0 dB.
The lower part of this field is used to select the display resolution for
the power measurement; 1, 2 or 5 dB per vertical division.
The power scale fields are displayed in the Markermenu when the
Maincontrols Measurementfield is set to Poweror Fast Pwr.
Scr een s on w h ich t h is field is p r esen t
COD DOM (Code Domain Analyzer): marker controls menu
P w r Zer o
Selecting this field calibrates (zeroes) the average power meter. This
operation should be performed immediately before making an average
power measurement. This field is only displayed if the average power
measurement is selected.
Op er a t in g Con sid er a t ion s
The Auto Zerofield causes average power to be periodically calibrated
when set to Auto. If the Auto Zerofield is set to Manual, you must use
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Qual Event
Qual Event
Qu a l Even t
This field selects a trigger qualifier. The trigger qualifier serves as a
precursor to the CDMA analyzer trigger event. Selecting a trigger
qualifier is required when a time-delayed trigger event is desired, or if
the trigger signal is externally supplied at the TRIGGER QUALIFIER
IN connector.
the qualifier starts the delay timer. When the timer expires, a trigger
event occurs and a measurement is made.
• Nonecauses the trigger event to be determined solely by the
selection in the Trig Eventfield.
• 27 msis an internally generated clock signal.
• 20 msis an internally generated clock signal.
• 80 msis an internally generated clock signal (default selection).
• 2 sis an internally generated clock signal.
• Ampl Loqualifies a trigger each time the input to the CDMA
analyzer rises above −18 dB ADC FS. ADC FSis displayed when the
average power measurement is selected, or when adjusting the Gain
field on the CODE DOMAIN ANALYZER screen.
• Ampl Midqualifies a trigger each time the input to the CDMA
analyzer rises above −12 ADC FS.
• Ampl Hiqualifies a trigger each time the input to the CDMA
analyzer rises above −6 ADC FS.
• Externalmust be selected if the trigger qualifier is provided by an
external source. The external signal connects to the TRIGGER
QUALIFIER IN connector. A qualifier occurs on the input signal’s
rising edge.
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CDMA ANALYZER
CODE DOM (Code Domain Analyzer): trigger controls menu
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RF Channel
RF Gen Freq
RF Channel
The RF Channel field is displayed when the RF Displayfield on the
INSTRUMENT CONFIGURE screen is set to Chan.
This field displays the current channel number. Channel tuning
eliminates the need to enter transmit and receive frequencies directly
into the Test Set. Once the radio’s RF channel standard is selected, you
only have to enter the channel number to automatically set the RF
Generatorand RF Analyzerto the correct frequency.
Op er a t in g Con sid er a t ion s
To utilize the correct transmit and receive frequencies select the
appropriate channel standard from the RF Chan Stdfield on the
INSTRUMENT CONFIGURE screen.
Scr een s on w h ich t h is field is d isp la yed
CDMA ANALYZER
CDMA GENERATOR
CODE DOM (Code Domain Analyzer): main controls menu
R F Gen F r eq
This field specifies the center frequency of the generated CDMA signal.
This field is displayed only when the RF Displayfield on the
INSTRUMENT CONFIGURE screen is set to Freq.
NOTE
Channel Tuning
You can configure the Test Set to allow direct entry of
channel numbers (instead of entering the frequency) by
using the RF Displayfield on the INSTRUMENT
CONFIGURE screen. See the "RF Channel" field (this
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RF In/Ant
Threshold
RF In /An t
This field selects the Test Set’s RF input.
CAUTION The maximum safe level into the ANT IN connector is
60 mW. Exceeding this level could cause permanent
damage to the Test Set.
Scr een s on w h ich th is field is p r esen t
CODE DOM (Code Domain Analyzer): main controls menu
Th r esh old
Enter the measurement display threshold for making code domain
timing and phase measurements. Walsh channels that have power
levels below the threshold value are not displayed.
Op er a tin g Con sid er a tion s
Querying these measurements for Walsh channels that are below the
threshold level using HP-IB will return a default value of 9e99.
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COD DOM (Code Domain Analyzer): auxiliary controls menu
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Time Offset
TmOfs
Tim e Offset
This field allows you to manually enter a time offset. To obtain a value
to enter in this field you must make at least one of the following
measurements.
•
•
•
•
Power
Timing
Phase
Rho
After making the measurement, access the FP Setupmenu on the
CODE DOM screen, and enter the value obtained from the Time Ofs
field or, for rho measurements, the Time Offsetmeasurement field on
the CDMA ANALYZER screen.
An entry into the Time Offsetfield can also be made automatically,
When measuring fast power, the code domain analyzer uses the value
in the Time Offsetfield instead of re-measuring the time offset
parameters each time a code domain measurement is made.
Scr een s on w h ich t h is field is p r esen t
COD DOM (Code Domain Analyzer): fast power setup controls menu
Tm Ofs
This measurement field displays the time offset when a rho
information about this measurement.
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COD DOM (Code Domain Analyzer): all menus
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Trig Event
Tune Freq
Tr ig E ven t
This field determines when the trigger event to the CDMA analyzer
occurs. When the selected trigger in this field is qualified by the
selection in the Qual Eventfield, the CDMA analyzer is triggered.
Choices
• 27 msis an internally generated clock.
• 20 msis an internally generated clock.
• 80 msis an internally generated clock.
• 2 sis an internally generated clock.
• Delaycontrols a trigger delay timer, beginning from the positive
edge of the selected qualifier. A delay of 20 µs to 10,000,000 µs is
valid. Initially, the time delay will be 100 µs.
• Immedtriggers immediately after receiving the Qual Eventsignal.
Default selection: Immed.
Scr een s on w h ich th is field is p r esen t
CDMA ANALYZER
COD DOM (Code Domain Analyzer): trigger controls menu
Tu n e F r eq
Use this field to enter the center frequency of the CDMA channel you
are analyzing. This field is displayed only when the RF Displayfield
on the INSTRUMENT CONFIGURE screen is set to Freq.
NOTE
Channel tuning
You can configure the Test Set to allow direct entry of
channel numbers (instead of entering the frequency) by
using the RF Displayfield on the INSTRUMENT
CONFIGURE screen. See the "RF Channel" field on page
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CDMA ANALYZER
COD DOM (Code Domain Analyzer): main controls menu
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Walsh Chan
Walsh Chan
Wa lsh Ch a n
This field selects the Walsh channel to move the marker to. The marker
can be moved by either entering the Walsh channel number using the
keypad, or by using the cursor-control knob.
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COD DOM (Code Domain Analyzer): marker controls menu
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CDMA Measurements - Screens and Control Fields
Walsh Chan
Walsh Chan
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Analog Measurements - Screens
and Control Fields
•
•
•
•
•
•
•
•
•
•
•
•
•
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AC Level Measurement
AM Depth Measurement
Analog Measurements
AC Level Measurement
The type of measurement shown is dependent on the AF Anl In
settings. AC Levelis displayed when the AF Anl Infield is set to SSB
Demod, Audio In, Ext Mod, or Audio Out.
The AC Levelmeasurement field displays either rms potential
(voltage) or audio power (Watts or dBm).
See "Displaying AF Measurements" on page 37, or the
Screens on which this field is displayed
AF ANALYZER
RF ANALYZER
RF GENERATOR
AM Depth Measurement
This measurement field displays the percent depth of modulation of the
AM signal. This measurement is displayed when the AF Anl Infield is
set to AM MODor AM DEMOD.
See "Displaying AF Measurements" on page 37, or the
Screens on which this field is displayed
AF ANALYZER
RF ANALYZER
RF GENERATOR
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AF Freq Measurement
DC Level Measurement
AF Freq Measurement
The AF frequency measurement is the audio frequency of the signal
present at the input selected in the AF Anl Infield (on the AF
ANALYZER screen). Four dashes (- - - -) indicate that no audio
frequency is present to measure.
See "SINAD, Distortion, SNR, AF Frequency, DC Level," on page 38 for
Screens on which this measurement is displayed
AF ANALYZER
RF GENERATOR
RF ANALYZER
DC Level Measurement
This measurement field displays the dc voltage entering at the source
set in the AF Anl Infield (on the AF ANALYZER screen).
See "SINAD, Distortion, SNR, AF Frequency, DC Level," on page 38 for
Operating Considerations
When the AF Anl Infield is set to FM Demodor AM Demod, the
unit-of-measure is kHz (for FM Demod) or % (for AM Demod). For these
two settings this measurement indicates the dc modulation component
of the received signal.
Screens on which this field is displayed
AF ANALYZER
RF GENERATOR
RF ANALYZER
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Distn (Distortion) Measurement
FM Deviation Measurement
Distn (Distortion) Measurement
This measurement field displays the percent of distortion for an audio
signal tone.
See "SINAD, Distortion, SNR, AF Frequency, DC Level," on page 38 for
more information.
Operating Considerations
Set the Notch Freqfield (on the AF ANALYZER screen) to match the
AF frequency used for your distortion measurement.
Screens on which this field is displayed
AF ANALZYER
RF ANALYZER
RF GENERATOR
FM Deviation Measurement
This measurement field displays the deviation of FM signals. This
measurement is displayed when the AF Anl Infield (on the AF
ANALYZER screen) is set to FM Demodor FM Mod.
See "Displaying AF Measurements" on page 37 for more information.
Screens on which this field is displayed
AF ANALZYER
RF ANALYZER
RF GENERATOR
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Frequency Measurement
Frequency Error Measurement
Frequency Measurement
This measurement field displays the center frequency the signal being
measured.
Operating Considerations
This measurement cannot be used for measuring CDMA signals; use
the CDMA analyzer.
Screens on which this field is displayed
AF ANALZYER
RF ANALYZER
RF GENERATOR
Frequency Error Measurement
This measurement field displays the difference between the Test Set’s
RF channel or tune frequency setting set and measured signal’s
frequency.
You can display the frequency error in ppm by pressing the ppm W key.
Operating Considerations
This measurement cannot be used for measuring CDMA signals; use
the CDMA analyzer.
Screens on which this field is displayed
AF ANALZYER
RF ANALYZER
RF GENERATOR
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TX Power Measurement
TX Power Measurement
TX Power Measurement
Transmitter power measures RF power at the RF IN/OUT port.
Operating Considerations
Only the RF IN/OUT port can be used for measuring TX power. When
the Input Portis set to Ant, four dashes (- - - -) appear in place of
digits for this measurement.
Use the spectrum analyzer to measure low-level RF power (≤60 mW) at
the ANT IN port.
CAUTION
Connecting a signal of >60 mW to the ANT IN port can
cause instrument damage (although internal protection
circuits can typically withstand a short-duration signal of
several Watts). If the overpower circuit is triggered
(signified by a warning message at the top of the screen),
remove the signal from the ANT IN port, and reset using
Meas Reset (press and release the Shift key, then the Hold key)
or turn the Test Set off and on to reset it.
Screens on which this field is displayed
AF ANALYZER
RF ANALYZER
RF GENERATOR
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FM Deviation Measurement
AF Freq (Audio Frequency) Measurement
FM Deviation Measurement
This is the default setting for this measurement field. The FM deviation
measurement is the frequency deviation of the carrier. This
measurement field is only displayed when the AF Anl Infield (on the
AF ANALYZER screen) is set to FM Demodor FM Mod.
See the "Displaying AF Measurements" on page 37 for more
Screens on which this field is displayed
AF ANALYZER
RF ANALYZER
RF GENERATOR
AF Freq (Audio Frequency) Measurement
The audio frequency measurement field displays the audio frequency of
the signal at the source selected in the AF Anl Infield (on the AF
ANALYZER screen).
See "SINAD, Distortion, SNR, AF Frequency, DC Level," on page 38 for
Screens on which this field is displayed
AF ANALZYER
RF ANALYZER
RF GENERATOR
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Analog Measurements - Screens and Control Fields
SINAD Measurement
SNR Measurement
SINAD Measurement
SINAD is the measure of the ratio of the signal+noise+distortion to the
noise+distortion produced at the output of a receiver that is the result
of a modulated signal input. This ratio is expressed in dB.
See "SINAD, Distortion, SNR, AF Frequency, DC Level," on page 38 for
more information.
Screens on which this field is displayed
AF ANALYZER
RF GENERATOR
RF ANALYZER
SNR Measurement
The is signal to noise ratio of the audio input signal.
See "SINAD, Distortion, SNR, AF Frequency, DC Level," on page 38 for
more information.
Operating Considerations
•
•
Selecting SNRturns off any other audio measurements.
The RF generator and audio frequency generator 1 (AFGen1) must
be set up to provide the radio’s carrier. (AFGen1is automatically
turned on and off repeatedly during this measurement.)
•
•
The AFGen2 Tofield on the RF GENERATOR screen must be set to
Off.
The audio output of the radio’s receiver must be connected to the
AUDIO IN port (set the AF Anl Infield on the AF ANALYZER
screen to Audio In).
Screens on which this measurement is displayed
AF ANALYZER
RF GENERATOR
RF ANALYZER
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AF Anl In
AF Cnt Gate
Control Fields for Analog Measurements
AF Anl In
The audio frequency analyzer input selects the input for the analyzer.
When selected, this field displays a list of choices.
Signals can be analyzed from three different types of inputs:
•
•
The output of the AM, FM, or SSB demodulators.
The AUDIO IN, ANALOG MODULATION IN, and AUDIO OUT
connectors.
•
The signal present at the AM or FM modulators for the RF
generator.
Operating Considerations
Changing this field changes the audio measurement (in the upper-right
of the screen) to correspond to the selected signal.
See "Selecting the Oscilloscope’s Input" on page 72 for more
information.
Screens on which this field is displayed
AF ANALYZER
AF Cnt Gate
Audio frequency counter gate specifies how long the AF counter
samples the signal before displaying the frequency. Specifying a shorter
gate time may enable you to see frequency fluctuations that might not
be seen using a longer gate time.
Screens on which this field is displayed
AF ANALYZER
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AFGen1 Freq
AFGen1 To
AFGen1 Freq
This field sets the frequency for the first audio frequency sinewave
generator.
Screens on which this field is displayed
RF GENERATOR
AFGen1 To
This field has two subfields:
•
•
The upper field sets the destination port for audio frequency
generator 1
• FM-RF generator FM modulator
• AM-RF generator AM modulator
• Audio Out-AUDIO OUT connector
The lower field
•
•
•
sets FM modulation deviation if the upper field set to FM
sets AM modulation depth if the upper field set to AM
sets the amplitude of audio signal (volts RMS) at the AUDIO
OUT connector if upper field is set to Audio Out
•
turns off the AF generator if the Yes On/Off key is pressed.
Operating Considerations
Simultaneous FM and AM, using both AF generators is not allowed.
AF generators 1 and 2 are automatically turned off any time the CDMA
screens are displayed. This prevents accidental amplitude or frequency
modulation of the CDMA carrier. The AF generators are turned back on
when you exit the CDMA screens (if they were previously turned on).
Screens on which this field is displayed
RF GENERATOR
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AFGen2 Freq
AFGen2 To
AFGen2 Freq
This field sets the frequency for the second audio frequency sinewave
generator.
Screens on which this field is displayed
RF GENERATOR
AFGen2 To
This field has two subfields:
•
•
The upper field sets the destination port for audio frequency
generator 2
• FM-RF generator FM modulator
• AM-RF generator AM modulator
• Audio Out-AUDIO OUT connector
The lower field
•
•
•
sets FM modulation deviation if the upper field set to FM
sets AM modulation depth if the upper field set to AM
sets the amplitude of audio signal (volts RMS) at the AUDIO
OUT connector if upper field is set to Audio Out
•
turns off the AF generator if the Yes On/Off key is pressed.
Operating Considerations
Simultaneous FM and AM, using both AF generators is not allowed.
AF generators 1 and 2 are automatically turned off any time the CDMA
screens are displayed. This prevents accidental amplitude or frequency
modulation of the CDMA carrier. The AF generators are turned back on
when you exit the CDMA screens (if they were previously turned on).
Screens on which this field is displayed
RF GENERATOR
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Amplitude
Atten Hold
Amplitude
This field adjusts the amplitude of the RF generator.
See for Atten Hold (below) for more information.
Screens on which this field is displayed
RF GENERATOR
SPEC ANL: RF generator controls menu
Atten Hold
Attenuator hold prevents the fixed RF output attenuators from
switching in and out, eliminating the loss of the output signal as the
level is changed. This function is helpful when making squelch
measurements.
Operating Considerations
When this function is set to On, the RF output level is restricted to a
range around the present Amplitudesetting. This range varies with
the amplitude setting. Attempting to set an amplitude outside the
allowed range results in an error message and beep (if the beeper is on).
RF output level accuracy is greatly degraded outside the allowed range.
Screens on which this field is displayed
RF GENERATOR
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Audio In Lo
Auto/Norm
Audio In Lo
This field sets the AUDIO IN LO connector’s state.
• Gndcauses the center pin of the connector to be connected directly to
chassis ground.
• Floatisolates the center pin of the connector from ground,
providing a floating input to the AF analyzer.
• 600 To Hiestablishes a 600-ohm impedance between the center
pins of the AUDIO IN LO and AUDIO IN HI connectors. Also, the
Ext Load Rfield is removed, since the load is now fixed to 600
ohms.
Screens on which this field is displayed
AF ANALYZER
Audio Out
Auto/Norm
Audio output coupling selects ac or dc coupling of the AF generator to
the AUDIO OUT connector.
Screens on which this field is displayed
RF GENERATOR
This field specifies how the trigger level is set.
• Autoautomatically triggers if a triggering signal is not detected
within approximately 50 ms of the last trigger.
• Normrequires a specific triggering signal before triggering.
Operating Considerations
Automatic triggering should be used for signals >20 Hz. Normal
triggering should be used for signals ≤20 Hz.
Also, when measuring ≤1 Hz signals, you should set the Scope Tofield
in the AF ANALYZER screen to Inputto provide dc coupling to the
oscilloscope’s input.
Screens on which this field is displayed
SCOPE: trigger controls menu
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Auto Zero
Cont/Single
Auto Zero
This field is displayed for average power measurements.
Autois used to automatically zero the TX power measurement
periodically during operation.
Manualis used to override the Autofeature. When Manualis selected,
you must manually zero the TX power measurement by selecting the
TX Pwr Zerofield.
Screens on which this field is present
RF ANALYZER
Center Freq
This field sets the tune frequency for the center of the spectrum
analyzer’s screen. The center frequency field is displayed when the RF
Displayfield on the INSTRUMENT CONFIGURE screen is set to
Freq.
Operating Considerations
This field also changes the center frequency of the tracking generator
and the RF analyzer.
Screens on which this field is displayed
SPEC ANL: main controls menu
Controls
The spectrum analyzer and oscilloscope settings are arranged in
several menus that are accessed using the Controls field. A list of menu
options is displayed when the controls field is selected.
See the descriptions for the individual control fields on each menu for
more information.
Screens on which this field is displayed
SPEC ANL: all menus
SCOPE: all menus
Cont/Single
This field specifies whether the oscilloscope is continuously triggered
(Cont), or if it is only triggered each time Resetis selected (Single).
Screens on which this field is displayed
SCOPE: trigger controls menu
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De-Emp Gain
De-Emphasis
De-Emp Gain
De-emphasis gain displays and selects the desired AF analyzer
de-emphasis amplifier gain.
Screens on which this field is displayed
AF ANALYZER
De-Emphasis
This setting selects or bypasses the 750 µs de-emphasis networks in the
audio analyzer and internal speaker circuitry.
Screens on which this field is displayed
AF ANALYZER
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Detector
Detector
Detector
This setting selects the type of detector used when measuring and
displaying AF signal levels.
Detector Types
• RMSdisplays the root mean square (rms) value of signals.
• RMS*SQRT2 displays the rms value of a signal multiplied by 2 .
• Pk+displays the positive peak value.
• Pk− displays the negative peak value.
• Pk±/2adds the positive and negative peak values, and divides the
sum by 2.
• Pk±Maxcompares the positive and negative peaks and displays the
greater value (polarity is not indicated).
• Pk+ Holddisplays and holds the positive peak value until the
measurement is reset. To reset, use Meas Reset (press and release the
Shift key, then the Hold key), select a different detector, or re-select the
same detector.
• Pk− Holddisplays and holds the negative peak value until the
measurement is reset. To reset, use Meas Reset (press and release the
Shift key, then the Hold key), select a different detector, or re-select the
same detector.
• Pk±/2 Holddivides the sum of the positive and negative peak
values by 2, and displays the value until the measurement is reset.
To reset, use Meas Reset (press and release the Shift key, then the Hold
key), select a different detector, or re-select the same detector.
• Pk±Mx Holdcompares the positive and negative peaks and displays
the greater value until the measurement is reset. To reset, use Meas
Reset (press and release the Shift key, then the Hold key), select a
different detector, or re-select the same detector.
HP-IB Example
Operating Considerations
Screens on which this field is displayed
AF ANALYZER
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Ext Load R
Filter 1
Ext Load R
External load resistance is used to calculate and display AF power.
Power is calculated using the voltage measured at the AUDIO IN
connections and the resistance value you enter into this field.
This field is displayed only when the Audio Infield on the AF
ANALYZER screen is set to GNDor Float.
Operating Considerations
To display audio power, set the AC Levelmeasurement’s unit of
measure to W(watts).
Screens on which this field is displayed
AF ANALYZER
Filter 1
This field selects an audio frequency filter which can be used to
condition the audio signal before it is analyzed by the audio frequency
analyzer.
The following filter choices are available:
•
•
•
•
<20 Hz HPF
50 Hz HPF
300Hz HPF
C MESSAGE
Operating Considerations
The audio from the Test Set’s speaker is not affected by Filter 1 or
Filter 2 settings.
Screens on which this field is displayed
AF ANALYZER
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Filter 2
Filter 2
Filter 2
This field selects an audio frequency filter which can be used to
condition the audio signal before it is analyzed by the audio frequency
analyzer.
The following filter choices are available:
•
•
•
•
•
300Hz LPF
3kHz LPF
15kHz LPF
>99kHz LP
6kHz BPF
Operating Considerations
The audio from the Test Set’s speaker is not affected by Filter 1 or
Filter 2 settings.
Screens on which this field is displayed
AF ANALYZER
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FM Coupling
Freq (marker)
FM Coupling
This field alters the FM modulator to allow DCFM from internal and
external modulation sources. This field also selects ac or dc coupling
between the RF generator’s frequency modulator and the ANALOG
MODULATION IN connector.
Operating Considerations
This field should be set to DCwhenever the AFGen2 Tofield is set to FM;
this provides better modulation response at low data rates.
Screens on which this field is displayed
RF GENERATOR
Freq (marker)
Marker frequency displays the frequency at the marker’s present
position on the spectrum analyzer.
Screens on which this field is displayed
SPEC ANL: all control menus
F igu r e 5-1 F r eq a n d Lvl Disp la y F ield s
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Gain Cntl
Gain Cntl
Gain Cntl
AF analyzer gain control specifies whether the AF analyzer’s gain
settings are controlled automatically by AF autoranging (Auto), or by
manual control (Hold).
The following settings are affected by AF autoranging:
•
•
•
Input Gain
De-Emp Gain
Notch Gain
Operating Considerations
The normal mode of operation for the Gain Cntlfield is Auto,
allowing the instrument to adjust the AF gain settings for optimum
measurement accuracy.
This field can be set to Holdto disable the autoranging routines to
increase measurement speed. However, this requires you to select the
desired gain settings manually for each measurement.
Autoranging Interference. After a signal is input, the RF autoranging
function (Auto) takes a small amount of time to determine the required
input attenuator setting. If your transmitter begins sending
information the instant it transmits, the initial part of the demodulated
signal may not appear on the oscilloscope. When trying to capture the
initial modulation waveform of a signal on the oscilloscope, set the
upper field to Holdand set the lower field to an appropriate level for
the signal being decoded (start with 40 dB).
Setting the upper field to Holdalso prevents the RF autoranging
process from interrupting spectrum analyzer operation when a signal is
first measured. This can be helpful when you need to see the signal the
instant the source is input, but requires you to set the needed amount of
input attenuation.
Screens on which this field is displayed
AF ANALYZER
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IF Filter
Input Atten
IF Filter
This field selects the desired IF filter bandwidth for modulated signals
being analyzed.
Screens on which this field is displayed
RF ANALYZER
Input Atten
Input attenuation sets the amount of input attenuation for the RF
IN/OUT and ANT IN connectors. This function controls two settings:
•
The upper field determines if you want the instrument to set the
attenuation automatically (Auto), or if you want to set the value
manually (Hold).
•
The lower field displays the present attenuation value, and is used to
set the desired attenuation level when the upper area is set to Hold.
Operating Considerations
Autoranging Interference. After a signal is input, the RF autoranging
function (Auto) takes a small amount of time to determine the required
input attenuator setting. If your transmitter begins sending
information the instant it transmits, the initial part of the demodulated
signal may not appear on the oscilloscope. When trying to capture the
initial modulation waveform of a signal on the oscilloscope, set the
upper field to Holdand set the lower field to an appropriate level for
the signal being decoded (start with 40 dB).
Setting the upper field to Holdalso prevents the RF autoranging
process from interrupting spectrum analyzer operation when a signal is
first measured. This can be helpful when you need to see the signal the
instant the source is input, but requires you to set the needed amount of
input attenuation.
Screens on which this field is displayed
RF ANALYZER
SPEC ANL: auxiliary controls menu
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Input Gain
Input Port
Input Gain
This field displays and selects the gain of the AF analyzer’s input
amplifier. The choices are 0 dB, 20 dB, or 40 dB. Refer to the Gain
Cntlfield more information.
Screens on which this field is displayed
AF ANALZYER
Input Port
This field selects the RF IN/OUT or ANT IN port for making RF
measurements. The RF IN/OUT port must be used for making TX
power measurements.
Operating Considerations
If the RF power at the RF IN/OUT port exceeds allowable limits, a loud
warning signal sounds and a message appears at the top of the screen.
If this occurs, disconnect the RF power, reset using Meas Reset (press and
release the Shift key, then the Hold key), and allow the Test Set to cool off
for approximately two minutes before making any other measurements
on this port.
The ANT IN (antenna input) connector provides a highly-sensitive
input for very low level signals (such as “off the air” measurements).
You cannot measure TX (RF) power on the RF ANALYZER screen
using the ANT IN port.
CAUTION
Connecting a signal of >60 mW to the ANT IN port can
cause instrument damage (although internal protection
circuits can typically withstand a short-duration signal of
several Watts).
If the overpower circuit is triggered (signified by a
warning message at the top of the screen), remove the
signal from the ANT IN port, and reset using Meas Reset
(press and release the Shift key, then the Hold key) or turn
the Test Set off and on.
Maximum signal levels at the RF IN/OUT, DUPLEX OUT,
and ANT IN ports are printed on the connector panel.
Exceeding these levels can cause permanent instrument
damage.
Screens on which this field is displayed
SPEC ANL: RF IN/ANT main controls menu
RF ANALYZER
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Internal
Level (div)
Internal
This field selects the trigger source.
• Internaluses the signal being displayed for triggering.
• Ext (TTL)uses the EXT SCOPE TRIGGER INPUT for triggering.
This is a TTL level trigger (approximately 2.5 V).
Screens on which this field is displayed
SCOPE: trigger controls menu
Level (div)
This control is divided into two fields:
The upper field (0.00) sets the internal trigger level as a function of
vertical divisions. The trigger level is indicated by small pointers that
appear on each side of the screen (only used for internal triggering).
The lower field (Pos/Neg) specifies whether triggering happens when
the waveform being measured is positive-going (Pos), or negative-going
(Neg).
Screens on which this field is displayed
SCOPE: trigger controls menu
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Lvl (marker)
Lvl (marker)
Lvl (marker)
This measurement field displays the signal level of the signal at the
page 133.)
Operating Considerations
The unit-of-measure for this field is dependent on the source of the
signal being measured. For instance, when measuring a signal from the
AUDIO IN connector, the amplitude is measured in Volts. When
looking at a signal from the FM demodulator, the amplitude is given in
units of kHz.
When the Vert Offsetfield is ≠0.00, the displayed marker level is
referenced to the center line generated by the vertical offset feature, not
the center line of the screen.
The Ref Set function can be used with this measurement to display levels
relative to a specific value. (See "Setting A Measurement Reference" on
page 45.)
Screens on which this field is displayed
SCOPE: all control menus
SPEC ANL: all control menus
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Marker To Peak+
Marker To (spectrum analyzer)
Marker To Peak+
Peak+causes the marker to move to the maximum value of the a verage
level measured on the display.
Because this functions look at the average value for each displayed
pixel, the marker may not appear directly on the displayed peak of a
noisy signal.
Screens on which this field is displayed
SCOPE: marker controls menu
Marker To Peak-
Peak− causes the marker to move to the minimum value of the average
level measured on the display.
Because this functions look at the average value for each displayed
pixel, the marker may not appear directly on the displayed peak of a
noisy signal.
Screens on which this field is displayed
SCOPE: marker controls menu
Marker To (spectrum analyzer)
These two fields position the marker as follows.
• Peakmoves the marker to the highest peak and enters the location
in the Positionfield.
• Next Peakmoves the marker to the next peak to the right and
enters the location in the Positionfield.
• Center Freqchanges the center frequency value to match the
current position of the marker.
• Ref Levelchanges the reference level setting to match the current
position of the marker.
Screens on which this field is displayed
SPEC ANL: marker controls menu
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Mod In To
No Pk/Avg
Mod In To
This modulation input field defines how an external modulation source
is used with the RF generator. Two fields are used:
•
The upper field determines whether the ANALOG MODULATION
IN signal is set for AM or FM modulation of the RF GENERATOR.
•
The lower field sets the modulation sensitivity. For instance, if FM
(/Vpk)is selected for the upper field, and you set the lower field to
1.0000 kHz, the RF generator will deviate 1 kHz for every 1 Volt
peak at the ANALOG MODULATION IN connector.
Screens on which this field is displayed
RF GENERATOR
No Pk/Avg
This field performs two functions:
Pk Hold (peak hold) prevents the spectrum analyzer from erasing the
previous trace each time it sweeps. This causes the traces to ‘build-up’
on the screen until Off, No Pk/Avgor measurement reset (using Meas
Reset (press and release the Shift key, then the Hold key) is performed.
This allows the capture of transient signals that are not displayed long
enough to view during normal operation.
Avg 1through 100(video averaging) enables the spectrum analyzer to
display a trace representing the average of several measurements. The
number of samples used for measurement averaging range from 1 to
100 (see below). No Pk/Avgand Offfunction identically. Offis
provided to maintain backwards compatibility with earlier firmware
and software.
• No Pk/Avgmeans that peak hold and video averaging are off.
• Pk Holdmeans that peak hold is on.
• Avg [n]enables video averaging over [n] measurements,
where n = 1, 2, 3, 4, 5, 10, 20, 50, or 100
• Offmeans that peak hold and video averaging are off.
Operating Considerations
After capturing the desired signal, you can use the hold function (press
Hold key) to prevent additional signals from building-up on the display.
Screens on which this field is displayed
SPEC ANL: auxiliary controls menu
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Normalize
Notch Freq
Normalize
This area performs three display operations:
• Save Bsaves the currently-displayed trace for the A-B operation.
• A onlyprovides a continuously-updated display (the “normal” mode
of operation).
• A-Bdisplays the difference between the trace saved using Save B
and the currently displayed trace. The comparison can yield either
losses or gains in amplitude.
Operating Considerations
The A-B function works correctly only if the center frequency and span
settings are the same for both signals.
The reference level (Ref Level) can be changed (on the Maincontrols
menu) to move the trace below the top line of the display if the A-B
function results in a gain.
The Hold key can be used to “freeze” the display at any time. This allows
you to view a trace before performing the Save B or A-B functions.
Screens on which this field is displayed
SPEC ANL: auxiliary controls menu
Notch Freq
This field sets the center frequency for the variable frequency notch
filter. It is typically used for distortion and SINAD measurements at
frequencies below or above the standard 1 kHz notch filter.
Operating Considerations
When the Notch Couplfield on the INSTRUMENT CONFIGURE
screen is set to AFGen1, this filter and the AFGen1 Freqfield match
their settings. A warning message is then displayed if you attempt to
set the AFGen1 Freqvalue outside the 300 Hz to 10 kHz range of this
filter. When the Notch Couplfield is set to None, this filter and
AFGen1 Freqoperate independently.
Screens on which this field is displayed
AF ANALYZER
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Notch Gain
Offset Freq
Notch Gain
This field displays and selects the gain of the AF analyzer’s notch filter
amplifier. This amplifier is only used for making SINAD and distortion
information.)
Screens on which this field is displayed
AF ANALYZER
Offset Freq
Frequency offset (RF generator) sets the difference between the
instantaneous frequencies of the tracking generator and the center
frequency of the spectrum analyzer.
This field is displayed only when Trackis selected in the Track/Fixed
field on the RF Gencontrols menu.
Operating Considerations
The offset can be a positive or negative value. When set to zero, the
tracking generator produces a sweeping signal that matches the
spectrum analyzer’s tune frequency.
Screens on which this field is displayed
SPEC ANL: RF generator controls menu
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Output Port
Pk Det To
Output Port
This field selects the RF generator’s output port. Higher RF generator
levels are available at the DUPLEX OUT port than at the RF IN/OUT
port.
Operating Considerations
CAUTION
Applying reverse RF power to the DUPLEX OUT
connector can damage the instrument. (A message is
displayed when an overpower conditions occurs.)
Whenever possible, use the RF IN/OUT connector when
testing transceivers to prevent damage from accidental
transmitter keying.
If a reverse-power condition triggers the internal
protection circuit, remove the reverse-power signal and
reset using Meas Reset (press and release the Shift key, then
the Hold key) or turn the Test Set off and on to reset it.
Maximum signal levels at the RF IN/OUT, DUPLEX OUT,
and ANT IN ports are printed on the connector panel.
Exceeding these levels can cause permanent instrument
damage.
Screens on which this field is displayed
RF GENERATOR
SPEC ANL: (Fixed) RF generator controls menu
Pk Det To
This field selects the signal source for the peak detectors. This allows
you to bypass certain sections of the AF analyzer’s circuitry when
making ac-level measurements.
• Filtersanalyzes the signal after filtering through Filter 1.
• De-Empanalyzes the signal after filtering through Filter 1 and
Filter 2, and after de-emphasis.
Screens on which this field is displayed
AF ANALYZER
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Port/Sweep
Port/Sweep
Port/Sweep
This control performs two functions:
•
•
The upper field specifies the output port of the tracking generator.
The lower field specifies whether the tracking generator sweeps from
low-to-high frequencies (Norm), or from high-to-low frequencies
(Invert). (The spectrum analyzer always sweeps from low to high
frequencies.) The swept frequency range is determined by the Span
setting in the spectrum analyzer’s main controls menu.
This field is displayed only when Trackis selected in the Track/Fixed
field on the spectrum analyzer’s RF Gencontrols menu.
Operating Considerations
When using the tracking generator, if the output port is set to RF Out,
or the main menu Input Portis set to RF In, internal instrument
coupling can occur. For the best isolation between the tracking
generator and the spectrum analyzer, use Duplfor the output, and Ant
for the input.
For measurements on high-power devices, such as amplifiers, use the
RF IN/OUT port for the input.
Screens on which this field is displayed
SPEC ANL: RF generator controls menu
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Position
Position
Position
This field indicates the number of scale divisions from the left side of
the screen to the marker.
Use the DATA ENTRY keys or cursor-control knob to move the marker
to any point on the displayed signal.
Screens on which this field is displayed
SCOPE: marker controls menu
SPEC ANL: marker controls menu
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Analog Measurements - Screens and Control Fields
Ref Level
Reset
Ref Level
Reference level sets the amplitude reference level for the top line of the
display. All signals displayed are referenced to this line.
Operating Considerations
The unit-of-measure for the reference can be changed as needed. For
instance, 0 dBm, 0.224 V, 107.0 dBmV, and 0.00100 W can all be used
to represent the same level.
Screens on which this field is displayed
SPEC ANL: main controls menu
Reset
Reset retriggers the measurement when Singletriggering is selected.
Screens on which this field is displayed
SCOPE: trigger controls menu
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RF Channel
RF Cnt Gate
RF Channel
The RF Channel field is displayed on the screens listed below when the
RF Displayfield on the INSTRUMENT CONFIGURE screen is set to
Chan.
This field displays the current channel number. Channel tuning
eliminates the need to set transmit and receive frequencies directly into
the Test Set. Once the radio’s RF channel standard is selected, you only
have to enter the channel number to automatically set the RF
Generatorand RF Analyzerto the correct frequency.
Operating Considerations
To utilize the correct transmit and receive frequencies select the
appropriate channel standard from the RF Chan Stdfield on the
INSTRUMENT CONFIGURE screen.
The lower subfield of the RF Channelfield on the spectrum analyzer’s
RF Gencontrols menu also sets the RF channel standard.
Screens on which this field is displayed
RF ANALYZER
SPEC ANL: RF generator or main controls menu
RF Cnt Gate
RF counter gate specifies how long the RF counter samples the signal
before displaying the frequency. Specifying a shorter gate time may
enable you to see frequency fluctuations that might not be seen using a
longer gate time.
Screens on which this field is displayed
RF ANALYZER
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RF Gen Freq
RF In/Ant
RF Gen Freq
This field sets the RF generator’s frequency.
This field is displayed on the screens listed below when the RF
Displayfield on the INSTRUMENT CONFIGURE screen is set to
Freq.
Screens on which this field is displayed
SPEC ANL (When the Controls field is set to “RF Gen”)
RF GENERATOR
RF In/Ant
This field selects the input port for the spectrum analyzer.
Operating Considerations
Maximum signal levels are printed on the connector panel.
CAUTION
Connecting a signal of >60 mW to the ANT IN port can
cause instrument damage (although internal protection
circuits can typically withstand a short-duration signal of
several Watts).
If the overpower circuit is triggered (signified by a
warning message at the top of the screen), remove the
signal from the ANT IN port, and reset using Meas Reset
(press and release the Shift key, then the Hold key) or turn
the Test Set off and on to reset it.
Using the ANT IN port with the Sensitivityfield set to Highcan
result in uncalibrated operation (a message appears on the screen when
this happens). The purpose for the high sensitivity setting is to allow
you to look and listen to very low level signals when absolute accuracy
is not essential.
information.
Screens on which this field is displayed
SPEC ANL
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Scope To
Scope To
Scope To
This field selects the signal source for the oscilloscope. This allows you
to bypass certain sections of the AF analyzer’s circuitry when viewing
and measuring a signal. It also allows you to select measurement paths
that include additional gain stages, improving the oscilloscope’s
resolution when measuring low-level signals.
• Inputlooks at the unfiltered signal directly from the input.
• Filterslooks at the signal after filtering through Filter 1 and
Filter 2.
• De-Emplooks at the signal after filtering through Filter 1 and
Filter 2, and after 750 µs de-emphasis (if the De-emphasisfield is
set to 750 us.)
• Notchlooks at the signal after filtering through Filter 1 and Filter
2, after de-emphasis (if used), and after the notch filter.
Screens on which this field is displayed
AF ANALYZER
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Sensitivity (RF analyzer)
Sensitivity (spectrum analyzer)
Sensitivity (RF analyzer)
RF analyzer sensitivity adds about 6 dB of sensitivity for the ANT IN
port when Highis selected and the Input Attenfield is set to 0 dB.
Operating Considerations
Selecting Highsensitivity may cause spectrum analyzer measurements
to be uncalibrated when the ANT IN port is used (a message appears
when this occurs).
High-level AM measurements may be distorted when high sensitivity is
used with the ANT IN port.
Screens on which this field is displayed
RF ANALYZER
Sensitivity (spectrum analyzer)
This area performs two functions:
•
The lower field selects the vertical resolution of the display. You can
choose from 1 dB, 2 dB, or 10 dB per graticule.
•
The upper field selects Normalor Highsensitivity for the RF input.
The Highsetting adds about 6 dB of sensitivity to the ANT IN port
(when the Input Attenfield is set to 0 dB) for looking at very low
level signals. However, this setting can cause measurements to be
uncalibrated (indicated by a message on the screen). High
sensitivity can also cause high-level AM signals to be distorted.
Screens on which this field is displayed
SPEC ANL: auxiliary controls menu
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Settling
Span
Settling
This field selects the settling time for making AF measurements. Lower
frequency signals require additional settling time (Slow). Higher
frequency measurements require less settling time (Fast).
Operating Considerations
Use Slowfor ≤200 Hz signals. Use Fastfor >200 Hz signals.
If the signal being measured is a composite of different frequencies
above and below 200 Hz, select the appropriate filtering to analyze the
desired signal component.
Screens on which this field is displayed
AF ANALZYER
Span
Sets the span of frequencies to be displayed on the screen.
Operating Considerations
When the tracking generator is used, the span also defines the
frequency sweep range.
Spans >1.5 MHz disable the AF analyzer when the analyzer’s AF Anl
Infield is set to FM Demod, AM Demod, or SSB Demod. This disables all
the AF analyzer’s measurement and output functions. When the AF
analyzer’s AF Anl Infield is set to any of the other available inputs,
such as Audio Inor Ext Mod, the speaker and SCOPE MONITOR
OUTPUT are not affected when the spectrum analyzer’s span is
changed.
Screens on which this field is displayed
SPEC ANL: main controls menu
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Speaker ALC
Speaker Vol
Speaker ALC
Speaker automatic level control enables/disables the ALC function for
the instrument’s internal speaker. When Onis selected, the speaker
volume is independent of the signal level being measured. When Offis
selected, the speaker volume is dependent on the signal level being
measured.
Screens on which this field is displayed
AF ANALYZER
Speaker Vol
Speaker Volume enables/disables the instrument’s internal speaker.
When Potis selected, the VOLUME control knob operates normally.
When Offis selected, the speaker is disconnected.
Screens on which this field is displayed
AF ANALYZER
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Squelch
Squelch
Squelch
This setting determines the squelch operation when demodulating FM,
AM, or SSB signals. Three settings are available:
• Potuses the front-panel SQUELCH knob for squelch level
adjustment.
• Opendisables squelch operation.
• Fixedsets the squelch to a fixed level, disabling the front-panel
SQUELCH knob control.
Operating Considerations
Most measurements are not displayed on the screen if the incoming
signal falls below the squelch level (with the exception of TX Power).
The measurements are replaced by four dashes (- - - -) to indicate they
have been squelched.
Oscilloscope measurements are also disabled when the signal has been
squelched.
Spectrum analyzer measurements are not affected by the squelch
setting (although squelch still affects whether the demodulated signal
can be heard while viewing the RF signal).
Trying to read a squelched measurement using HP-IB will cause your
program to halt until the squelch is either turned down, a measurement
is made, or until a program time-out aborts the measurement.
Screens on which this field is displayed
RF ANALYZER
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Analog Measurements - Screens and Control Fields
Time
Track/Fixed
Time
This measurement displays the time elapsed from the trigger point to
the current marker position.
The Ref Set function can be used with this measurement to display time
relative to a specific position. (See "Setting A Measurement Reference"
on page 45.)
Screens on which this field is displayed
SCOPE: all control menus
Time/div
This field selects the horizontal sweep time per division.
Operating Considerations
The time-per-division is selected from a list of choices.
Screens on which this field is displayed
SCOPE: main controls menu
Track/Fixed
When this field is set to Track, the tracking generator is enabled. The
tracking generator performs a frequency sweep operation. The start
and stop frequencies are determined by the Span setting (main controls
menu). The tracking generator allows you to characterize devices (such
as filter networks) over wide span of frequencies.
An RF offset can be set between the tracking generator and the center
frequency of the spectrum analyzer. This allows you to look at a signal
that is related to a source whose frequency is outside the displayed
span.
Screens on which this field is displayed
SPEC ANL: RF generator controls menu
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Trig-Delay
Trig-Delay
Trig-Delay
The trigger delay is used to specify the time relationship between the
trigger and displayed signal.
• Positivevalues delay the measurement trigger by a specific
period. The delayed trigger point is the left edge of the screen.
• Negativevalues perform a pre-trigger function, displaying a
section of the waveform before the trigger point. The trigger point is
indicated by small pointers that appear at the top and bottom of the
screen.
Operating Considerations
Negative Value. The maximum negative delay cannot exceed ten
divisions of the current time-per-division setting. For example; if the
Time/Divfield is set to 1 ms, the maximum allowed negative delay is
−10 ms. Larger negative numbers cause an Excessive negative
Trig-Delay will be truncated.message.
Positive Values. For Time/Divsettings of 50 ms/div and smaller, the
maximum delay is 400 ms.
For Time/Divsettings of 100 ms/div and larger, the maximum delay is
3200 ms.
Resolution. For delays of 400 ms and less, the resolution is 6.4 ms. For
delays greater than 400 ms, the resolution is 51.2 ms. All entries are
rounded to the nearest multiple of 6.4 ms or 51.2 ms (depending on the
delay value).
Screens on which this field is displayed
SCOPE: trigger controls menu
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Analog Measurements - Screens and Control Fields
Tune Freq
TX Pwr Meas
Tune Freq
This field is displayed when the RF Displayfield on the
INSTRUMENT CONFIGURE screen is set to Freq.
RF analyzer tune frequency sets the center frequency for the RF signal
to be analyzed.
Screens on which this field is displayed
RF ANALYZER
TX Pwr Meas
The transmitter power measurement field specifies how transmitter
power measurements are made:
• Peakcan be used to measure AM, FM, and un-modulated (CW)
signals.
• Samplecan be used to measure FM or CW signals with increased
measurement speed. This method can only be used with signals
having no amplitude modulation component.
Operating Considerations
If you change this field, zero the power measurement (using the TX Pwr
Zerofield) before measuring power.
Screens on which this field is displayed
RF ANALYZER
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TX Pwr Zero
TX Pwr Zero
TX Pwr Zero
The transmitter power zero function establishes a 0.0000 W reference
for measuring RF power at the RF IN/OUT port.
Operating Considerations
When power is applied to the RF IN/OUT connector, the temperature of
the internal circuitry increases. This can cause changes in the TX
power measurement when low power levels are measured immediately
following high power measurements.
When alternately making high and low power measurements, always
zero the power meter immediately before making the low power
measurements; this provides the best measurement accuracy.
If the Auto Zerofield is set to Auto, the TX power measurement is
periodically zeroed (automatically). Manual calibration is only needed if
Auto Zerois set to Manual, or if you are measuring highly variable
signal levels (as mentioned above).
Screens on which this field is displayed
RF ANALYZER
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Vert/div
Vert Offset
Vert/div
Vertical sensitivity sets the vertical amplitude per division.
Operating Considerations
The value for this field is selected from a list of choices.
Depending on the AF analyzer’s AF Anl Insetting, the units for this
field may be in Volts, kHz, or Percent (AM). For example; if the AF Anl
Infield is set to FM Demod, the amplitude is displayed in kHz/div.
Screens on which this field is displayed
SCOPE: main controls menu
Vert Offset
Vertical offset moves the displayed signal above or below the
oscilloscope’s fixed centerline.
Operating Considerations
A centerline is displayed for the signal when an offset is used.
When the vertical offset is ≠0.00, the marker level is referenced to the
center line generated by the vertical offset feature, not the center line of
the screen.
Screens on which this field is displayed
SCOPE: main controls menu
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Con figu r a t ion - Scr een s a n d
Con tr ol F ield s
•
•
•
•
•
•
159
Main Menu
Configuration - Screens and Control Fields
Setting the Date and Time
Turning Off User Messages
Con figu r in g th e In st r u m en t
Set t in g t h e Da t e a n d Tim e
The Test Set has a built-in clock that keeps track of the date and time.
It is powered by an internal battery to keep it operating when the
instrument is off.
To set the date and time
Step 1. Access the INSTRUMENT CONFIGURE screen.
Step 2. Select the Datefield and use the DATA ENTRY keys to enter
the date (MMDDYY -- October 31, 1997 = 103197).
Step 3. Select the Timefield and use the DATA ENTRY keys to enter
the time (HH.MM -- 2:13 pm = 14.13).
Ch a n gin g th e Beep er ’s Volu m e
The beeper alerts you to important operating and measurement
conditions. It beeps any time a message is displayed at the top of the
screen. These messages warn you of conditions such as exceeding the
RF input level or trying to set a field to an unacceptable value.
Therefore, it is recommended that you do not disable the beeper.
To change the beeper’s volume
Step 1. Access the INSTRUMENT CONFIGURE screen.
Step 2. Select the Beeperfield to display the volume choices.
Step 3. Select the desired choice.
Tu r n in g Off User Messa ges
To turn off user messages
Step 1. Access the INSTRUMENT CONFIGURE screen.
Step 2. Set the Display User Mssgsfield to No.
To display user messages
Step 1. Access the INSTRUMENT CONFIGURE screen.
Step 2. Set the Display User Mssgsfield to Yes.
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Printing a Screen
Printing a Screen
Con figu r in g for P r in tin g A Scr een
P r in t in g a Scr een
To Print A Screen’s Contents
St ep 1. Connect a printer to the appropriate connector (SERIAL 9,
PARALLEL 15, HP-IB).
St ep 2. Go to the PRINTER CONFIGURE screen set the Printer
Port:field to the appropriate type of printer connection.
If HP-IB is selected, enter the HP-IB address (Printer Adrs)
of the printer.
St ep 3. Select the type of printer you are using in the Modelfield. If
your printer is not listed, configure your printer to emulate
one that is listed. (Some Windows1-only printers are not
supported.)
St ep 4. Enter a Print Titleif desired. This text will appear at the
top of your printout.
a . Use the knob to select letters, numbers, or symbols from
the list (up to 50 characters).
b . Select Donefrom the list when you have finished the title.
St ep 5. Display the screen you want to print and press Print.
To interrupt printing
St ep 1. Go to the PRINTER CONFIGURE screen.
St ep 2. Select the Abort Printfield.
1. Windows is a U.S. trademark of Microsoft Corp.
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Configuration - Screens and Control Fields
Abort Print
Antenna In
Con tr ol F ield s on t h e Con figu r a t ion Scr een s
Ab or t P r in t
Select this field to interrupt the printing job in progress.
Abort Print is not directly programmable over the HP-IB.
Scr een (s) Wh er e F ield is P r esen t
PRINTER CONFIGURE
An t en n a In
This field is used to indicate losses or gains between the ANT IN port
and the device-under-test.
Enter a positive value to indicate a gain (such as an amplifier). The
spectrum analyzer’s marker level (Lvl) measurement is automatically
reduced by that amount. The spectrum analyzer’s Ref Levelis
automatically decreased by the same amount, so the trace position does
not appear to change.
Enter a negative value to indicate a loss (such as cable loss). The
spectrum analyzer marker’s level (Lvl) measurement is automatically
increased by that amount. The spectrum analyzer’s Ref Levelis
automatically increased by the same amount, so the trace position does
not appear to change.
This field is only used when the RF Level Offsetfield is set to On.
Scr een (s) Wh er e F ield is P r esen t
INSTRUMENT CONFIGURE
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Base Freq (User Defined)
Base Freq (User Defined)
Ba se F r eq (User Defin ed )
The base frequency field sets the RF generator reference for channel 0
(zero) when the RF Chan Stdfield is set to USER-DEF, and the RF
Displayfield is set to Chan.
Channel frequencies are calculated using the following formula:
Channel N = Base Frequency + (N)(Channel Spacing)
The Base Frequency is calculated using the following formula:
Base Frequency = Channel 1 Frequency − Channel Spacing
For example, if your multi-channel radio’s lowest receive channel
frequency is 870.030 MHz and the system channel spacing is 30 kHz,
you would enter 870 MHzin this field. You would also use the Chan
Spaceand (Gen)-(Anl)fields to tell the Test Set where other
transmit and receive channel frequencies are in relation to the base
frequency, and whether or not the system is duplex.
For more information see the following related topics:
Op er a t in g Con sid er a t ion s
The value of this field is only used if the RF Displayfield is set to
Chan, and the RF Chan Stdfield is set to USER-DEF.
Scr een (s) Wh er e F ield is P r esen t
INSTRUMENT CONFIGURE
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Beeper
Chan Space (User Defined)
Beep er
This field changes the audio beeper volume by selecting the desired
level from a list of choices (Off, Quiet, Loud). The beeper always beeps
when the instrument is turned on, regardless of this setting.
Op er a tin g Con sid er a tion s
The beeper alerts you any time a message is displayed. Since a message
may be removed from the screen before you notice it, it is better to leave
the beeper on to alert you to errors during operation.
The beeper’s volume setting is retained when the instrument is turned
off.
Scr een (s) Wh er e F ield is P r esen t
INSTRUMENT CONFIGURE
Ch a n Sp a ce (User Defin ed )
This field specifies the RF channel spacing when the RF Displayfield
is set to Chan, and the RF Chan Stdfield is set to USER-DEF.
For example, entering 25 kHzcauses a 25 kHz spacing between each
channel. If the receive frequency for channel 1 is 150.500 MHz, channel
2’s receive frequency would be 150.525 MHz.
Op er a tin g Con sid er a tion s
The value of this field is only used if the RF Displayfield is set to
Chan, and the RF Chan Stdfield is set to USER-DEF.
For more information see the following related topics:
Scr een (s) Wh er e F ield is P r esen t
INSTRUMENT CONFIGURE
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Data Length
Display User Messages
Da t a Len gt h
This field specifies the number of bits used for each word of serial data
when using the serial port.
This setting is retained when the instrument is turned off.
Scr een (s) Wh er e F ield is P r esen t
I/O CONFIGURE
Da t e
This field specifies the current date for the internal clock. The date can
be read by a controller using HP-IB and printed on test results.
The format is MMDDYY (Month Day Year), using two digits for each
term. When entering months J anuary through September (01-09), the
leading zero is not displayed when entered. Example; May 5, 1993 is
entered as 050593, but is displayed as 50593.
The internal clock still functions when the instrument is turned off.
Scr een (s) Wh er e F ield is P r esen t
INSTRUMENT CONFIGURE
Disp la y User Messa ges
This field controls whether or not user messages and prompts are
displayed at the top of the screen when a user action is required or an
error occurs.
Scr een (s) Wh er e F ield is P r esen t
INSTRUMENT CONFIGURE
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Duplex Out
Ext Ref In
Du p lex Ou t
This field is used to indicate losses or gains between the DUPLEX OUT
port and the device-under-test.
•
Enter a positive value to indicate a gain (such as an amplifier gain).
The RF generator’s level is automatically set that amount below
what is indicated in the RF generator’s Amplitudefield. (Example;
if this value is 10 dB, and the Amplitudefield shows 0 dBm, the
actual level out this port is −10 dBm.) The value at the output of the
external amplifier should then be at the level indicated in the
Amplitudefield.
•
Enter a negative value to indicate a loss (such as cable loss). The RF
generator’s level is automatically set that amount above what is
indicated in the RF generator’s Amplitudefield to compensate. The
value at the opposite end of the cable (loss) should then be at the
level indicated in the Amplitudefield; unless the resulting RF
generator setting exceeds the maximum output level, then an error
occurs: Input value out of range. In that case, reduce the
Amplitudesetting, or decrease the Duplex Outvalue.
This field is only used when the RF Level Offsetfield is set to On.
Scr een (s) Wh er e F ield is P r esen t
INSTRUMENT CONFIGURE
Ext Ref In
This field selects the reference frequency of the signal at the EXT REF
IN connector. You can select 1, 2, 5, or 10 MHz; 1x, 2x, 4x, 8x, or 16x
chip.
Op er a tin g Con sid er a tion s
This signal is used as a reference for, and directly affects, these
functions:
•
•
•
•
•
RF Generator Frequency (including the Tracking Generator)
RF Frequency Counter
AF Frequency Counter
RF Analyzer Tune Frequency
Spectrum Analyzer Center Frequency
AF generators 1 and 2 are not affected by the external reference; they
use their own reference.
See "EXT REF IN" on page 189 for more information.
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FF at End:
Firmware
F F a t E n d :
This field is used to specify if you want the printer to make a form feed
(blank page) at the end of printing.
Scr een (s) Wh er e F ield is P r esen t
PRINTER CONFIGURE
F F a t St a r t :
This field is used to specify if you want the printer to make a form feed
(blank page) at the start of printing.
Scr een (s) Wh er e F ield is P r esen t
PRINTER CONFIGURE
F ir m w a r e
This field displays the current firmware revision for your Test Set. The
revision number is automatically changed when updated firmware is
installed.
Scr een (s) Wh er e F ield is P r esen t
INSTRUMENT CONFIGURE
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Flow Control
Flow Control
F low Con t r ol
The flow control field is used when sending or receiving serial data.
• Nonedisables the Xon/Xoff function.
• Xon/Xofflets the Test Set “talk/listen” to the transceiver to alter
the rate of the data being sent.
• Hardwareuses the serial port’s RTS and CTS lines to transfer data
at high baud rates.
NOTE
Do not turn flow control on (set Flow Cntl to Hardware
in the I/O CONFIGURE screen) for the serial port until
you have a device attached to the port that can respond to
the flow control communications.
Example: You have a printer attached to SERIAL PORT 9.
Before you run any IBASIC software (for example, the
RFTOOLS program), you must make sure that the printer
is properly connected and that its power is turned on.
Op er a tin g Con sid er a tion s
This setting is retained when the instrument is turned off.
Baud rates of 38400 and above must use Hardwareflow control.
Scr een (s) Wh er e F ield is P r esen t
I/O CONFIGURE
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Frame Clock Output
(Gen)-(Anl) (User Defined)
F r a m e Clock Ou tp u t
This field selects the frame clock signal to send to the FRAME CLOCK
OUT connector.
Scr een (s) Wh er e F ield is P r esen t
INSTRUMENT CONFIGURE
(Gen )-(An l)
This field is used with the RF Offsetfield to specify the amount of
frequency offset between the RF generator and RF analyzer.
This field is always displayed when the RF Displayfield is set to
Freq.
See "Setting an RF Generator/Analyzer Offset" on page 47 for more
information.
Scr een (s) Wh er e F ield is P r esen t
INSTRUMENT CONFIGURE
(Gen )-(An l) (User Defin ed )
This field defines the receiver-transmitter frequency offset when using
user-defined channel operation.
Use a positive value (such as 45 MHz) when the radio’s receive
frequency is higher than the transmit frequency.
Use a nega tive value (such as −45 MHz) when the radio’s receive
frequency is lower than the transmit frequency.
Op er a t in g Con sid er a t ion s
The value of this field is only used if the RF Displayfield is set to
Chan, and the RF Chan Stdfield is set to USER-DEF.
For more information see the following related topics:
Scr een (s) Wh er e F ield is P r esen t
INSTRUMENT CONFIGURE
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HP-IB Adrs
Inst Echo
HP -IB Ad r s
This field is used to display and change the HP-IB address of the Test
Set.
Op er a tin g Con sid er a tion s
The address can be set from 0 to 30 by using the DATA keys, or by
pushing and then turning the cursor-control knob.
This setting is retained when the instrument is turned off.
Scr een (s) Wh er e F ield is P r esen t
I/O CONFIGURE
IBASIC E ch o
This field enables/disables screen and error message echoing from
IBASIC.
This setting is retained when the instrument is turned off.
Scr een (s) Wh er e F ield is P r esen t
I/O CONFIGURE
In st E ch o
This field enables/disables character and screen echoing when using an
external ASCII RS-232 terminal or computer to enter or edit IBASIC
programs.
This setting is retained when the instrument is turned off.
Scr een (s) Wh er e F ield is P r esen t
I/O CONFIGURE
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Chapter6
Main Menu
Configuration - Screens and Control Fields
Lines/Page:
Notch Coupl
Lin es/P a ge:
This field is used to specify how many lines are printed per page.
Scr een (s) Wh er e F ield is P r esen t
PRINTER CONFIGURE
Mod e
This field sets the HP-IB operating mode. Talk&Lstnis used for
normal HP-IB operation. Controlis used to control external
instruments using the Test Set.
This setting is retained when the instrument is turned off.
Scr een (s) Wh er e F ield is P r esen t
I/O CONFIGURE
Mod el:
This field is used to specify the type of printer used. If your printer is
not listed in the Choicesmenu when you select this field, configure
your printer to emulate one of those that is listed. (Some Windows-only
printers are not supported.)
Scr een (s) Wh er e F ield is P r esen t
PRINTER CONFIGURE
Not ch Cou p l
This field selects if the Notch Freqsetting of the AF ANALYZER
screen is coupled to the AF Gen1 Freqsetting. When set to None, the
notch filter and AF generator 1 do not interact. When set to AFGen1
(coupled), the settings track each other unless the AF generator’s
frequency is set outside the 300 Hz to 10 kHz limits of the notch filter.
Scr een (s) Wh er e F ield is P r esen t
INSTRUMENT CONFIGURE
Chapter 6
171
Main Menu
Configuration - Screens and Control Fields
Opt CDMA TB
Print Title:
Op t CDMA TB
This control is provided for future enhancements. It must be set to
Internaluntil options are available.
Scr een (s) Wh er e F ield is P r esen t
INSTRUMENT CONFIGURE
P a r ity
This field specifies the serial communication parity setting when using
the serial ports.
This setting is retained when the instrument is turned off.
Scr een (s) Wh er e F ield is P r esen t
I/O CONFIGURE
P r in ter P or t:
This field is used to select the port your printer is connected to
(Parallel 15, Serial 9, HP-IB).
Scr een (s) Wh er e F ield is P r esen t
PRINTER CONFIGURE
P r in t Tit le:
This field is used to enter up to 50 characters to be displayed at the top
of the printout.
Scr een (s) Wh er e F ield is P r esen t
PRINTER CONFIGURE
172
Chapter6
Main Menu
Configuration - Screens and Control Fields
Range Hold
Range Hold
R a n ge Hold
These fields enable/disable several autoranging and autotuning
routines.
Auto Allenables these routines, providing automatic adjustment
when making AF or RF measurements.
Hold Alldisables these routines, requiring you to manually set the
affected settings.
The following fields are affected by the Range Holdfield:
• Input Attenin the RF ANALYZER and SPEC ANL screens.
• Gain Cntlin the AF ANALYZER screen. This field controls three
AF gain setting fields:
Input Gain
De-Emp Gain
Notch Gain
Op er a t in g Con sid er a t ion s
The Hold Allsetting is primarily used when the instrument is
operated by remote control, such as in an automated test system.
Unless you have very specific reasons for disabling the automatic
functions, you should set this field to Auto Allwhen operating the
instrument manually.
Scr een (s) Wh er e F ield is P r esen t
INSTRUMENT CONFIGURE
Chapter 6
173
Main Menu
Configuration - Screens and Control Fields
Ref Select
Ref Select
Ref Select
This field selects the timebase reference signal to use for generating
and analyzing signals.
• Autoautomatically selects an external reference if a signal of
sufficient level is detected at the EXT REF IN.
• Internaluses the Test Set’s internal timebase and ignores signals
connected to the EXT REF IN connector.
• Externalrequires a valid reference signal to be connected to the
EXT REF IN connector.
Op er a tin g Con sid er a tion s
The front-panel REFERNCE indicators show which source is selected
and whether or not the timebase is phase locked. The Test Set will not
operate correctly if it is unlocked.
Locking to an external reference may take several seconds. The lower
the frequency the longer it may take to lock to the signal.
Scr een (s) Wh er e F ield is P r esen t
INSTRUMENT CONFIGURE
174
Chapter6
Main Menu
Configuration - Screens and Control Fields
RF Chan Std
RF Chan Std
R F Ch a n St d
Use the RF channel standard field to select the channel standard for
the radio-under-test. The RF generator’s and the RF analyzer’s
frequencies are automatically set to correspond to the channel number
entered in the RF Channelfield. RF Channelreplaces the RF Gen
Freqand Tune Freqfields on several screens when the RF Display
field on the INSTRUMENT CONFIGURE screen is set to Chan.
Each standard has a prefix code that indicates what type of radio to
test; mobile station (MS) or land station (LS). For example, if you are
testing an AMPS base station, select LS AMPS.
For the NAMPS standards, a third letter is added indicating which
frequency band is used: upper, middle, or lower. For example, when
testing a base station using the upper band you would select
LSU NAMPS.
The USER-DEFselection is used to define your own channel
assignments. When selected, you enter the Base Freq, Chan Space,
and (Gen)-(Anl)settings.
For more information see the following related topics:
Op er a t in g Con sid er a t ion s
The channel standard can also be changed in the lower subfield of the
RF Channelfield on the SPEC ANL, RF GENERATOR, and RF
ANALYZER screen.
Scr een (s) Wh er e F ield is P r esen t
INSTRUMENT CONFIGURE
Chapter 6
175
Main Menu
Configuration - Screens and Control Fields
RF Display
RF Gen Volts
RF Disp la y
This field selects the format for entering the RF generator’s and RF
analyzer’s frequencies:
•
When Freqis selected, you enter the RF generator’s and the RF
analyzer’s frequencies directly using the keypad or knob.
•
When Chanis selected, the RF Gen Freqand Tune Freqfields on
all screens are replaced by the RF Channelfield, and only the
channel number is entered and displayed.
Channel tuning eliminates the need to enter transmit and receive
frequencies directly into the Test Set. Once your radio’s RF channel
standard is selected, you only have to enter the channel number to
automatically set the RF generator and RF analyzer to the correct
frequencies.
Op er a tin g Con sid er a tion s
Scr een (s) Wh er e F ield is P r esen t
INSTRUMENT CONFIGURE
RF Gen Volt s
This field specifies whether you want RF voltages expressed as the
voltage across a 50 ohm load, or the open circuit voltage (emf).
Op er a tin g Con sid er a tion s
This setting affects the RF generator’s and the tracking generator’s
amplitudes.
Scr een (s) Wh er e F ield is P r esen t
INSTRUMENT CONFIGURE
176
Chapter6
Main Menu
Configuration - Screens and Control Fields
RF In/Out
RF In/Out
R F In /Ou t
This field is used to indicate losses or gains between the RF IN/OUT
port and the device-under-test.
•
Enter a positive value to indicate a gain (such as an amplifier gain).
When the RF IN/OUT port is used as an output, the RF generator’s
(or tracking generator’s) level is automatically set the specified
amount below what is indicated in the RF generator’s Amplitude
field. Example; if this value is 10 dB, and the Amplitudefield shows
0 dBm, the actual level out of this port is −10 dBm.
When this port is used as an input, the TX Powermeasurement and
spectrum analyzer’s marker level (Lvl) are automatically reduced by
that amount.
•
Enter a nega tive value to indicate a loss (such as cable loss). The RF
generator’s (or tracking generator’s) level out this port is
automatically set that amount above what is indicated in the RF
generator’s Amplitudefield.
When used as an input, the TX Powerand the spectrum analyzer’s
marker level (Lvl) measurements are increased by that amount.
This field is only used when the RF Level Offsetfield is set to On.
Scr een (s) Wh er e F ield is P r esen t
INSTRUMENT CONFIGURE
Chapter 6
177
Main Menu
Configuration - Screens and Control Fields
RF Level Offset
RF Offset
RF Level Offset
This field enables/disables the RF level offsets entered in the RF
In/Out, Duplex Out, and Antenna Infields below it.
•
When set to On, the RF generator’s amplitude and RF analyzer’s
power measurement are offset by the values entered in these fields.
•
When set to Off, the values in these fields are ignored.
For more information see the following related topics:
Scr een (s) Wh er e F ield is P r esen t
INSTRUMENT CONFIGURE
RF Offset
This field is displayed when the RF Displayfield is set to Freq.
This field enables/disables the RF generator−RF analyzer frequency
offset specified in the (Gen)-(Anl)field below it.
Op er a tin g Con sid er a tion s
When an RF offset is used, changing the RF generator’s frequency or
RF analyzer’s tune frequency automatically alters the other setting.
See "Setting an RF Generator/Analyzer Offset" on page 47 for more
information.
Scr een (s) Wh er e F ield is P r esen t
INSTRUMENT CONFIGURE
178
Chapter6
Main Menu
Configuration - Screens and Control Fields
Save/Recall
Save/Recall
Sa ve/R eca ll
This field specifies which memory device the Test Set accesses when the
save and recall functions are used.
• Internalis a section of internal RAM. RAM is also used for
running IBASIC programs, which may require you to delete the
save/recall registers if the program is very large.
• Cardis the front-panel MEMORY CARD (PC card) slot. A
Save/Recall Device is not Present message is displayed if
you try to save or recall an instrument setup when a write-able PC
card is not installed in the Test Set.
• RAMrefers to RAM disks that you can create on internal RAM. Refer
to the Programmer’s Guide for information on creating RAM Disks.
This is part of the same memory used when “internal” is specified,
and may have to be erased when loading very large IBASIC
programs. A Save/Recall Device is not initialized
message is displayed if you try to save or recall an instrument setup
when a RAM disk has not been created.
Scr een (s) Wh er e F ield is P r esen t
I/O CONFIGURE
Chapter 6
179
Main Menu
Configuration - Screens and Control Fields
Serial Baud
Serial No.
Ser ia l Ba u d
This field selects the baud rate for serial communications when using
the serial ports. Selecting this field displays a list of baud rate choices.
This setting is maintained after the instrument is turned off.
Scr een (s) Wh er e F ield is P r esen t
I/O CONFIUGRE
Ser ia l_9 In
This field selects the destination of characters received by the Test Set
on the SERIAL PORT 9.
• Instconfigures the serial port to connect to an external ASCII
terminal or computer to enter IBASIC programs, or to control the
Test Set using an external keyboard.
• IBASICis used to allow the IBASIC controller to read the serial port
while a program is running.
Op er a tin g Con sid er a tion s
If a serial printer is connected, the PRINT command causes the printer
to take control of the serial port until printing is done.
This setting is maintained after the instrument is turned off.
Scr een (s) Wh er e F ield is P r esen t
I/O CONFIGURE
Ser ia l No.
This field displays the serial number of the Test Set.
Scr een (s) Wh er e F ield is P r esen t
INSTRUMENT CONFIGURE
180
Chapter6
Main Menu
Configuration - Screens and Control Fields
Stop Length
Total RAM
St op Len gt h
This field specifies the number of stop bits (1 or 2) used for serial
communications when using the serial port.
This setting is maintained after the instrument is turned off.
Scr een (s) Wh er e F ield is P r esen t
I/O CONFIGURE
Tim e
This field sets the time-of-day for the instrument’s 24 hour clock.
(Example, 4:53 PM is entered 16:53)
Op er a t in g Con sid er a t ion s
The internal clock still functions when the instrument is turned off.
Scr een (s) Wh er e F ield is P r esen t
INSTRUMENT CONFIGURE
Tot a l R AM
This field displays the total amount of RAM available for IBASIC
programs and save/recall registers.
Scr een (s) Wh er e F ield is P r esen t
INSTRUMENT CONFIGURE
Chapter 6
181
Main Menu
Configuration - Screens and Control Fields
Total RAM
Total RAM
182
Chapter6
Main Menu
Connectors
10 MHz REF OUT
ANALOG MODULATION IN
Con n ector s
10 MH z R EF OUT
This connector furnishes a 10 MHz reference for external instruments.
Op er a tin g Con sid er a tion s
NOTE
The reference output frequency is always 10 MHz,
independent of the selected input reference frequency.
16 × CH IP CLOCK 19.6608 MH z OUT
This output provides a 19.6608 MHz (16 times the CDMA chip rate)
square wave with a 50% duty cycle. This signal comes from the CDMA
frame clocks.
ANALOG MODULATION IN
This connector provides an external modulation connection to the RF
generator.
Op er a tin g Con sid er a tion s
The Mod In Tofield of the RF GENERATOR screen sets the type of
modulation (AM or FM).
The FM Couplingfield on the RF GENERATOR screen selects ac or dc
coupling of this signal for FM operation.
184
Main Menu
Connectors
ANT IN
ANT IN
ANT IN
The antenna input is used for analyzing low-power RF signals
(≤60 mW), and is typically used for off-the-air measurements. This port
can be selected in the RF ANALYZER, or SPEC ANL screens.
CAUTION
Connecting a signal of >60 mW to the ANT IN port can
cause instrument damage (although internal protection
circuits can typically withstand a short-duration signal of
several Watts).
If the overpower circuit is triggered (signified by a
warning message at the top of the screen), remove the
signal from the ANT IN port, and reset using Meas Reset
(press and release the Shift key, then the Hold key) or turn
the Test Set off and on to reset it.
Op er a t in g Con sid er a t ion s
TX power cannot be measured using this port; use the RF IN/OUT port.
However, low power levels can be measured using this port with the
spectrum analyzer.
Additional sensitivity for this port is available using the Sensitivity
field in the RF ANALYZER and SPEC ANL screens.
185
Main Menu
Connectors
AUDIO IN
AUDIO IN
AUDIO IN
Two connectors are used to input audio signals to the AF analyzer:
•
•
HI is the main audio signal input connection.
LO is used for the audio signal reference. Three choices are available
using the AF ANALYZER screen’s Audio In Lofield:
• Gndconnects the center pin through approximately 100Ω to
chassis ground.
• Floatis a floating input.
• 600 To Hi provides a 600Ω internal load to match an audio
source with an output impedance of 600Ω.
The measured level is the potential between the HI and LO center pins.
The shells of both connectors are at chassis ground.
For more information see the "AF Anl In" field on page 123, and the
"Audio In Lo" field on page 127.
Op er a tin g Con sid er a tion s
Input impedance is switchable between 1 MΩ in parallel with 95pF, or
600Ω floating.
This port is selected as the AF analyzer’s input using the AF Anl In
field on the AF ANALYZER screen.
Signals input to the AF analyzer are routed through different filters,
amplifiers, and detectors that affect the displayed measurement.
CAUTION
The maximum level between the HI and LO center pins is
42 V peak (approximately 30 Vrms). Exceeding this value
can cause permanent instrument damage.
186
Main Menu
Connectors
AUDIO OUT
BASEBAND OUT (I and Q)
AUDIO OUT
This port is used to output signals from audio frequency generators 1
and 2.
Op er a t in g Con sid er a t ion s
The output level is set by the AF generators and is not affected by the
front-panel VOLUME control.
AC/DC coupling is selected using the Audio Outfield. This field is
available on the RF GENERATOR screen.
BASEBAND OUT (I a n d Q)
These outputs provide buffered versions of the I and Q drive signals.
Op er a t in g Con sid er a t ion s
The I and Q drive signals are balanced by DACs that provide the correct
dc offset for the I/Q modulator.
187
Main Menu
Connectors
Chassis Ground
DUPLEX OUT
Ch a ssis Gr ou n d
The chassis ground terminal provides a general chassis connection.
CH IP CLOCK 1.2288 MH z OUT
This output provides a 1.2288 MHz (CDMA chip rate) square wave with
a 50% duty cycle. This signal comes from the CDMA frame clocks.
DATA IN
This connector provides a data input to the CDMA generator.
DUP LEX OUT
This connector is an output for the RF generator and tracking
generator.
Op er a tin g Con sid er a tion s
The RF generator’s output is selected in the Output Portfield. This
field is available on the RF GENERATOR, and SPEC ANL screens.
CAUTION
Connecting an RF source of >60 mW to this connector can
permanently damage the instrument.
188
Main Menu
Connectors
EVEN SECOND SYNC IN
EXT SCOPE TRIG IN
EVEN SECOND SYNC IN
This port is an input for the even second clock from the base station
under test. A positive edge on this connector starts two timers. One
timer, after reaching terminal counts, starts CDMA frame clocks. The
other timer starts pilot PN sequence generation. The Even Sec In
field on the CDMA GENERATOR screen controls this port. See the
"Even Sec In" field on page 100.
E XT RE F IN
This connector allows you to input an external reference. The reference
frequency is selected using the Ext Ref Infile on the INSTRUMENT
CONFIGURE screen.
Op er a t in g Con sid er a t ion s
When a valid signal is applied to the EXT REF IN port, the Test Set
automatically switches from internal to external reference if the Ref
Selectfield is set to Auto.
This signal is used as a reference for, and directly affects, these
functions:
RF Generator Frequency (including the Tracking Generator)
RF Frequency Counter
AF Frequency Counter
RF Analyzer Tune Frequency
Spectrum Analyzer Center Frequency
AF generators 1 and 2 are not affected using an external reference; they
use their own reference.
NOTE
The reference output frequency is always 10 MHz,
independent of the selected input reference frequency.
Electrostatic discharges to the EXT REF IN port of 0.5 kV
or above may cause degradation of performance requiring
operator intervention.
EXT SCOP E TR IG IN
This connector provides an external oscilloscope’s trigger input.
Op er a t in g Con sid er a t ion s
When measured with no load on the input, a 5 Volt level is present on
the connector due to the internal pull-up resistor design.
189
Main Menu
Connectors
FRAME CLOCK OUT
HP-IB
F RAME CLOCK OUT
This output provides an external connection to several internal clocks.
The clocks are selected using the Frame Clock Outputfield on the
INSTRUMENT CONFIGURE screen. The frame clock selections are as
follows:
•
•
•
•
20.00 ms
26.67 ms
80.00 ms
2.00 s
HP -IB
This connector is optional on the Test Set.
This connector allows communication between the Test Set and other
instruments or computers using the Hewlett-Packard Interface Bus
(HP-IB).
For more information see the "HP-IB Adrs" field on page 170.
190
Main Menu
Connectors
MEMORY CARD Slot
PARALLEL PORT 16
ME MOR Y CARD Slot
This front-panel opening is where PC cards are inserted.
P ARALLEL P OR T 15
This port is used with printers requiring a parallel interface when
printing screen images or test results. Set the Printer Port:field (on
the PRINTER CONFIGURE screen or TESTS (Printer Setup) screen)
to Parallelto print to this port. Use address PARALLEL_15 when
sending data to this port from IBASIC programs.
Pin numbers are embossed on the connector. Pin assignments are as
follows:
F igu r e 7-1 P a r a llel P or t P in Assign m e n t s
Pin 1
Pin 14
nStrobe
Data 1 (LSB)
Data 2
nAutoFD
NFault
nInit
nSelectIn
Data 3
Data 4
Signal Ground (nStrobe)
Signal Ground (Data 1 and Data 2)
Signal Ground (Data 3 and Data 5)
Signal Ground (Data 5 and Data 6)
Signal Ground (Data 7 and Data 8)
Signal Ground (Busy nFault)
Signal Ground (PError, Select, and NAck)
Signal Ground (nAutoFD, nSelectIn, and Init)
Data 5
Data 6
Data 7
Data 8 (MSB)
nAck
Busy
PError
Select
Pin 13
Pin 25
P ARALLEL P OR T 16
PARALLEL PORT 16 is reserved for future enhancements.
191
Main Menu
Connectors
RF IN/OUT
SCOPE MONITOR OUTPUT
RF IN/OUT
This Type-N connection is used to output signals from the RF generator
and to input RF signals.
CAUTION
Overpower Damage — Refer to the Test Set’s connector
panel for maximum input power level. Exceeding this level
can cause permanent instrument damage.
If the RF power at the RF IN/OUT port exceeds allowable
limits, a loud warning signal sounds and a message
appears at the top of the screen. If this occurs, disconnect
the RF power, reset using Meas Reset (press and release the
Shift key, then the Hold key), and allow the Test Set to cool
off for approximately 2 minutes before making any other
measurements on this port.
Op er a tin g Con sid er a tion s
This port must be used when measuring TX (RF) power.
Signals ≤60 mW can be input to the ANT IN connector for all RF
measurements except TX Power.
This port can be selected on the RF ANALYZER, or SPEC ANL screens.
SCOP E MONITOR OUTP UT
This connector provides an external output from the AF analyzer.
Op er a tin g Con sid er a tion s
The Scope Tofield in the AF ANALYZER screen determines the
source of this signal. For more information see the "Scope To" field on
page 149.
The level is not affected by the front-panel VOLUME knob.
192
Main Menu
Connectors
SERIAL PORTs 9, 10, and 11
SERIAL PORTs 9, 10, and 11
SE R IAL P OR Ts 9, 10, a n d 11
The serial ports are used to input and output serial data for entering
programs, printing tests results and screen images, and sending test
results to a connected controller, disk drive, or terminal.
Op er a t in g Con sid er a t ion s
The serial communications settings are defined on the I/O
CONFIGURE screen.
SERIAL PORT 9 must be used for serial printing.
The IBASIC controller sends and receives data to the serial ports using
address 9 for the primary port, and 10, 11 for the other ports. For
example, to enter data from the primary serial port into a program
variable named SDATA, you could use the following command:
ENTER SERIAL_9;SDATA
To send data from your program out of the primary serial port, you
could use the following command:
OUTPUT SERIAL_9;SDATA
F igu r e 7-2 Ser ia l P or t P in Assign m en ts
5
1
9
6
193
Main Menu
Connectors
TRIGGER QUALIFIER IN
VIDEO OUT
TRIGGE R QUALIF IE R IN
This input is active when an external trigger qualifier is selected with
the Qual Eventfield on the CDMA ANALYZER and CODE DOM
screens.
If the trigger is to occur on the TRIGGER QUALIFIER IN signal, select
Delayin the Trig Eventfield and select a delay of 0.0 µs. If the
TRIGGER QUALIFIER IN signal is a qualifier, select a trigger source
in the Trig Eventfield.
For more information see "Qual Event" field on page 108, and "Trig
Event" field on page 112.
VIDE O OUT
This connector provides a signal for using an external video monitor.
The signal provides a duplicate of the Test Set’s screen.
Op er a tin g Con sid er a tion s
The CRT’s Video Output drives a multisync monitor at 19.2 kHz
(analog). Examples of this type of monitor include the Electrohome
ECM 1410-DMS 14-inch color monitor and the EVM 1242-P4VID
12-inch monochrome monitor.
194
Main Menu
8
Accessor ies, Ma n u a ls, Su p p or t
195
Main Menu
Accessories, Manuals, Support
Modifications
Mod ifica t ion s
The following information can be found in the HP 8935 Assembly Level
Repair Manual:
•
•
•
Hardware Upgrades/Modifications
Firmware Upgrades
Power Cables
196
Chapter8
Main Menu
Accessories, Manuals, Support
Accessories
Accessor ies
Ta b le 8-1 Accessor ies
Descr ip t ion
None available at this time.
Or d er in g Nu m b er
E xt er n a l Mon it or
The CRT’s Video Output drives a multisync monitor at 19.2 kHz
(analog). Examples of this type of monitor include the Electrohome
ECM 1410-DMS 14-inch color monitor and the EVM 1242-P4VID
12-inch monochrome monitor.
Ma n u a ls (E n glish a n d n on -E n glish )
Ta b le 8-2 Ma n u a ls
Or d er in g
Nu m b er
Descr ip t ion
La n gu a ge
English
HP 8935 Manuals on CD-ROM
E6380-90027
E6380-90016
E6380-90018
E6380-90019
E6380-90017
E6380-90015
HP 8935 CDMA Application Guide (paper)
HP 8935 Programmer’s Guide (paper)
HP 8935 Reference Guide (paper)
English
English
English
English
HP 8935 AMPS Application Guide (paper)
HP 8935 Assembly Level Repair Manual (paper) English
No non-English manuals available at this time.
Chapter 8
197
Main Menu
Accessories, Manuals, Support
Accessories
Test Softw a r e
The Radio Test Software performs automated tests on radios used in
various radio communication systems. Each test package is contained
on an individual memory card.
Ta b le 8-3 Soft w a r e
E6385A
E6386A
E6387A
HP 8935 Lucent CDMA Cellular/PCS Base Station Test
Set Software
HP 8935 Samsung CDMA Cellular/PCS Base Station Test
Set Software
HP 8935 Nortel CDMA Cellular/PCS Base Station Test
Set Software
Op t ion s
Ta b le 8-4 H P 8935 Op t ion s
Or d er
Nu m b er
Descr ip t ion
High Stability Reference
1D5
198
Chapter8
Main Menu
Accessories, Manuals, Support
HP Support for Your Instrument
H P Su p p or t for You r In st r u m en t
Get t in g H elp
If you have problems using this Test Set, and cannot find the solution in
these documents or the Help screens, please use one of the following
contacts:
•
•
•
•
•
•
U.S. Call Center: 800 542-4844
Korea HP Direct: (82/2) 769-0800
Canada HP Direct: (800) 387-3154
European Call center: +31 20 547-9990
Test and Measurement Organization on the web:
http://www.tmo.hp.com/
Parts and service for your Test Set can be ordered by
Chapter 8
199
Main Menu
Accessories, Manuals, Support
HP Support for Your Instrument
Cu st om er Tr a in in g
Hewlett-Packard offers customers a variety of training materials and
classes that explain the theory and applications of many HP products.
Contact your HP regional sales office to arrange training for you or your
group.
Ta b le 8-5 H P Sa les a n d Ser vice Offices
United States of America
U.S. Instrument Support
Center
For Test & Measurement
Equipment Repair &
Calibration.
United States of America
Customer Information Center Sales and Service
Hewlett-Packard Company
Tel: (800) 752-0900
United Kingdom
Hewlett-Packard Ltd.
Cain Road
Amen Corner
Bracknell, Berkshire
RG12 1HN
6:00 am to 5:00 pm Pacific
Time
Englewood, Colorado 80112
Parts Direct: 1-800-227-8164
United Kingdom
Telephone: (800) 403-0801
Fax: (888) 857-8161
Telephone: 44 344 360000
Fax: 44 344 363344
South Eastern Europe
Sales and Service
Hewlett-Packard Ges. m.b.h.
Liebigasse 1
European Multicountry
Region
Sales and Service
Hewlett-Packard S.A.
P.O. Box 95
Northern Europe
Sales and Service
Hewlett-Packard Nederland
B.V.
P.O. Box 72
Startbaan 16
A-1222 Vienna, Austria
150, Route dv
1187 XR
Nant_dl_AVRIL
CH-1217 Meyrin 2
Geneva, Switzerland
Amstelveen, The Netherlands
P.O. Box 667
Telephone: 43 222 2500 0
Telex: 13 4425
Telephone: 31/20 5476911 X
6631
Fax: 31-20-6471825NL
Telephone: (41/22) 780-8111
Fax: (41/22) 780-8542
200
Chapter8
Main Menu
Accessories, Manuals, Support
HP Support for Your Instrument
Asia
J apan
International Sales Branch
Headquarters
Sales and Service
Hewlett-Packard S.A.
39 Rue Veyrot
P.O. Box 365
1217 Meyrin 1
Geneva, Switzerland
Sales and Service
Hewlett-Packard Asia Ltd.
22-30/F Peregrine Tower
Lippo Center
89 Queensway, Central
Hong Kong
Sales and Service
Yokogawa-Hewlett-Packard
Ltd.
3-29-21, Takaido-Higashi
Suginami-Ku, Tokyo 168
Telephone: 81 3 3331-6111
Fax: 81 3 3331-6631
G.P.O. Box 863 Hong Kong
Telephone: 852-848-7777
Fax: 852-868-4997
Telephone: 41-22-780-4111
Fax: 41-22-780-4770
Australia, New Zealand
Sales and Service
Hewlett-Packard Ltd.
P.O. Box 221
31-41 J oseph Street
Blackburn, Victoria 3130
Canada
Canada
Service Center
Sales and Service
Hewlett-Packard (Canada)
Ltd.
5150 Spectrum Way
Mississauga, Ontario L4W
5G1
Hewlett-Packard Company
17500 Transcanada Highway
S. Serv Road
Kirkland, Quebec H9J 2X8
Canada
Telephone: (61/3) 895-2895
Fax: (61/3) 898-9257
Canada
Telephone: (416) 206-3295
Telephone: (416) 206-4725
Fax: (416) 206-4739
Canada
Latin America
Service Center
Hewlett-Packard Company
LAHQ Mexico City
Col. Lomas de Virreyes
11000 Mexico D.F.
Mexico
Hewlett-Packard Ltd.
11120 178 Street
Edmonton, Alberta T5S 1P2
Canada
Telephone: (403) 486-6666
Fax: (403) 489-8764
Telephone: (52/5) 326-4000
Fax: (52/5) 202 7718
Chapter 8
201
Main Menu
Accessories, Manuals, Support
HP Support for Your Instrument
202
Chapter8
Main Menu
9
E r r or Messa ges
203
Main Menu
Error Messages
General Information About Error Messages
Gen er a l In for m a tion Ab ou t Er r or Messa ges
Information concerning error messages displayed by the Test Set may
be found in one of the following manuals:
•
•
•
•
HP 8935 Programmer’s Guide
HP 8935 Assembly Level Repair Manual
HP Instrument BASIC User’s Handbook:
A Beginner’s Guide to SCPI
The format of the displayed message determines which manual
contains information about the error message. There are four basic
error message formats:
•
•
•
•
Positive numbered error messages
IBASIC error messages
HP-IB error messages
Text only error messages
The following paragraphs give a brief description of each message
format and direct you to the manual to look in for information about
error messages displayed in that format.
P ositive Nu m ber ed Er r or Messa ges
Positive numbered error messages are generally associated with
IBASIC. Refer to the HP Instrument BASIC User’s Handbook for
information on IBASIC error messages.
Positive numbered error messages take the form:
ERROR XX
For example:
Error 54 Duplicate file name
or
Error 80 in 632 Medium changed or not in drive
204
Chapter9
Main Menu
Error Messages
General Information About Error Messages
Nega t ive Nu m b er ed Er r or Messa ges
Negative numbers preceding the error messages text correspond to the
error conditions outlined in the Standard Commands for Programmable
Instruments (SCPI). For more information on SCPI, order the following
book,
A Beginner’s Guide to SCPI Addison-Wesley Publishing Company ISBN
0-201-56350-9 HP P/N 5010-7166
or contact,
Fred Bode, Executive Director SCPI Consortium
8380 Hercules Drive, Suite P3
La Mesa, CA 91942
Phone: (619) 697-8790, FAX: (619) 697-5955 CompuServe Number:
76516,254
Negative numbered error messages take the form: ERROR −XX <error
message>
For example
Error -128 Numeric data not allowed
or
Error -141 Invalid character data
IBASIC Er r or Messa ges
IBASIC Error Messages are associated with IBASIC operation. IBASIC
error messages can have both positive and negative numbers. Refer to
the HP Instrument BASIC User’s Handbook for information on positive
numbered error messages. Refer to the HP-IB Error Messages section
of the Programmer’s Guide for information on negative numbered error
messages (the error message associated with a negative number is the
same for HP-IB errors and IBASIC errors).
IBASIC er r or m e ssa ge s t a k e t h e for m :
IBASIC Error: -XX
For example:
IBASIC Error: -286 Program runtime error
Chapter 9
205
Main Menu
Error Messages
General Information About Error Messages
HP -IB Er r or Messa ges
HP-IB Error Messages are associated with HP-IB operation. Refer to
the Programmers Guide for information on HP-IB error messages.
H P -IB er r or m essa ges t a k e t h e for m :
HP-IB Error: -XX
or
HP-IB Error
For example:
HP-IB Error: -410 Query INTERRUPTED.
or
HP-IB Error: Input value out of range.
Text On ly Er r or Messa ges
Text only error messages are generally associated with manual
operation of the Test Set. This manual contains information on text
only error messages.
Text only error messages can also be displayed while running the Test
Set’s built-in diagnostic or calibration utility programs. Refer to the
Assembly Level Repa ir manual for information on text only error
messages displayed while running the Test Set’s built-in diagnostic or
calibration utility programs.
Text only error messages take the form:
This is an error message.
Input value out of range.
206
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Main Menu
Error Messages
General Information About Error Messages
Th e Messa ge Disp la y
During instrument operation, various messages may appear on the
Test Set’s display. Prompt-type messages generally appear on the first
line of the Test Set’s display. General operating and error messages
usually appear on the second line of the display. Some messages are
persistent; they remain displayed until the error condition no longer
exists, or until another persistent message with greater priority occurs.
Other messages are only displayed when the error first occurs; they are
removed when a key is pressed or the knob is turned, or when an HP-IB
command is received. Many of the messages are displayed on the
ERROR MESSAGE screen until the instrument is turned off.
Messages that are about error conditions may tell you what to do to
correct the error (turn something off, reduce a field’s value, press a
certain key, and so forth). Messages and prompts are sometimes
accompanied by a beep or warble.
NOTE
Wa r b les a n d Beep s
A warble sound indicates that an instrument-damaging
event is occurring. Beeps often occur only with the first
occurrence of the message. Prompts are generally silent.
Non -Recover a b le F ir m w a r e Er r or
The non-recoverable firmware error is very important. It appears when
an unanticipated event occurs that the Test Set’s firmware cannot
handle. The message appears in the center of the Test Set’s display and
(except for the two lines in the second paragraph) has the form:
Non-recoverable firmware error. Please record the 2 lines of
text below and contact Hewlett-Packard through your local
service center or by calling (800) 827-3848 (USA, collect) and
asking to speak to the Service Engineer.
‘Address error exception’
at line number 0
To continue operation, turn POWER off and back on.
Follow the instructions in the message.
Unfortunately, you will not be able to recover from this condition. You
must switch the Test Set off and back on. When you rerun the test
where the Error Message occurred, it may not occur again. If it does
reappear, it would be helpful to Hewlett-Packard to record exactly what
the configuration of the instrument was when the error appeared and
contact Hewlett-Packard.
Chapter 9
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Main Menu
Error Messages
General Information About Error Messages
Text On ly Er r or Messa ges
Operation errors generally occur when you try to do something the Test
Set was not designed to do. Most messages tell you what to do to correct
the problem, (turn something off, reduce a field’s value, press a certain
key,…and so forth).
Some common messages are listed here:
•
•
All self tests passed.
The Test Set did not detect any hardware or firmware failures
during its initial self-diagnostics.
This message should always be displayed immediately after
instrument turn on.
•
•
Input value out of range.
A number was entered that was too large or small for the selected
field, for example, trying to set AFG1 Freqto 125 kHz.
Invalid keystroke.
You used a key that has no function relating to the selected field,
for example, pressing the On/Off key while the Filter 1field is
selected.
•
•
Option not installed.
You selected a function that requires optional hardware that is
not present.
Turn off either AM or FM settings.
You tried to create simultaneous AM and FM (using any
combination of AFGen1, AFGen2, and the Mod In Tofield). The
Test Set does not provide simultaneous AM and FM.
•
Squelch interrupt overflow. Reset using Meas Reset (press and release
the Shift key, then the Hold key).
The Test Set temporarily interrupts audio measurements when
squelch is first broken to prevent internal switching transients
from influencing measurements (except when using the SCOPE,
SPEC ANL, SERVICE screens). If squelch is repetitively broken
in a period of a few seconds, the duration of measurement
interruption becomes too great, and the Test Set stops
interrupting the signal. Following measurements may be
influenced by transient signals.
Meas Reset clears the data buffer used to generate interrupts,
resetting the normal squelch operation to eliminate transients.
This condition may occur when monitoring low-level off-the-air
signals.
208
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Error Messages
General Information About Error Messages
•
•
Cal file checksum incorrect - initializing file.
This error usually occurs after changing the Test Set’s firmware
ROM’s. It is not a problem in that instance, but should not
re-appear during subsequent operation of the Test Set.
One or more self tests failed. Error code: XXXX
An instrument failure was detected when the Test Set was turned
on. (For example, having a stuck front-panel key during turn on.)
The numbered error message corresponds to a binary-weighted
group of errors listed in the *TST Common Command description
in the Programmer’s Guide.
•
Change Ref Level, Input Port or Attenuator (if using Hold).
The RF signal level is either too great or too small for the current
input port, attenuator setting, or both. This error often occurs
when trying to make a low-level measurement using the RF
IN/OUT port with the spectrum analyzer. Make the indicated
changes until this message is no longer displayed.
•
•
Change RF Gen Amplitude, Output Port or Atten Hold (if on).
This message appears when the RF Generator’s Amplitudefield
is set too high when using the RF IN/OUT port or when adjusting
the amplitude with the Atten Holdfield set to On.
The RF IN/OUT port has a lower maximum output level than the
DUPLEX OUT port. Use the DUPLEX OUT port, or reduce the RF
generator’s level.
If Atten Holdis On, you may be adjusting the amplitude outside
of the allowed range. Change the amplitude
•
Direct latch write occurred. Cycle power when done servicing.
•
The SERVICE screen was accessed and one or more internal
latch settings were changed. Turn the instrument off and back on
to reset the latches. (This condition can occur during periodic
calibration.)
Chapter 9
209
Main Menu
Error Messages
General Information About Error Messages
210
Chapter9
Main Menu
In d ex
- - - -
Sym bols
Nu m e r ics
meaning of, squelch, 153
# of Frames
data source, 99
% delta key, 26
% key, 26
10 MHz REF OUTPUT connector,
meaning of, TX power
measurement, 36
184
16 x CHIP CLOCK connector, 184
19.6608 MHz OUT connector, 184
600 ohm impedance
at AUDIO IN, 127
meaning of, TX power
measurements, 120
+/- key, 30
Index
211
Main Menu
In d ex
A
Speaker Vol field, 152
TX Power field, 120
TX Pwr Zero, 157
AF Anl In field
AM depth
measurements, 37
setting, 124, 125
AM Depth field
RF Analyzer screen, 116
RF Generator screen, 116
AM depth measurements, 37
AM Mod
Abort Print field
Printer Configure screen, 162
abort printing, 161
ac coupling
AF Analyzer screen, 123
AF Anl Input
input, 133
field, 72
output, 127
AF Anl key, 25
AC level
AF Cnt Gate field
AF Analyzer screen, 123
AF Freq field
oscilloscope input, 72
peak detector, 143
Ampl Hi
AC Level field
trigger qualifier, 108
Ampl Lo
AF Analyzer screen, 116
RF Analyzer screen, 116
ac level measurements, 37
accessories, 197
AF Analyzer screen, 117
RF Analyzer screen, 117
RF Generator screen, 117
AF frequency measurements, 38
AF generator 1
trigger qualifier, 108
Ampl Mid
trigger qualifier, 108
amplifier
ADC FS field
CDMA Analyzer screen, 93
ADC FS measurements, 82, 83
ADCFS field
CDMA Analyzer screen, 82, 83
CDMA Generator screen, 82, 83
ADCfs field
amplitude, 124
for distortion measurements,
frequency, 124
142
for SINAD measurements, 142
amplitude
output destination, AUDIO
OUT connector, 124
output destination, RF
generator AM modulator,
124
AF generator, 124, 125
RF generator, 126
vertical sensitivity, 158
Amplitude field
CDMA Generator screen, 93
Code Domain Analyzer screen,
93
output destination, RF
generator FM modulator,
124
CDMA Generator screen, 93
RF Analyzer screen, 126
RF Generator screen, 126
Spectrum Analyzer screen, 126
AMPS, 175
address
HP-IB, test set, 170
turning off, 124
AF analyzer
AF generator 2
input, 123
amplitude, 125
signal types analyzed, 123
AF Analyzer screen
AC Level field, 116
AF Anl In field, 123
AF Cnt Gate field, 123
AF Freq field, 117
AM Depth field, 116
Audio In Lo field, 127
DC Level field, 117
De-Emp Gain, 129
De-Emphasis field, 129
Detector field, 130
Distn field, 118
frequency, 125
analog meter, 39
ANALOG MODULATION IN
connector
output destination, AUDIO
OUT connector, 125
output destination, RF
generator AM modulator,
125
description, 184
ANALOG MODULATION INPUT
connector
output destination, RF
generator FM modulator,
125
coupling, 133
for modulating RF generator,
140
turning off, 125
analyzer
AFGen1 Freq field
RF Generator screen, 124
AFGen1To field
calibration, 68
frequency, markers, 133
input port, 148
Ext Load R field, 131
RF Generator screen, 124
AFGen2 Freq field
RF Generator screen, 125
AFGen2 To field
Analyzer field
Filter 1 field, 131
CDMA Analyzer screen, 94
Code Domain Analyzer screen,
94
Filter 2 field, 132
FM Deviation field, 118, 121
Freq Error field, 119
Frequency field, 119
Gain Cntl field, 134
Input Gain field, 136
Notch Freq field, 141
Notch Gain field, 142
Pk Det To field, 143
Scope To field, 149
Settling field, 151
SINAD field, 122
RF Generator screen, 125
analyzer, RF
ALC
frequency, 156
disabling, 152
sensitivity, 150
internal speaker, 152
Anl Dir field
AM
CDMA Analyzer screen, 95
input, 140
Anl Special field
AM Demod
CDMA Analyzer screen, 95
ANT IN connector
avoiding damage, 36, 120, 136,
148
AF Anl In, 37
oscilloscope input, 72
AM Depth
SNR field, 122
AF Analyzer screen, 116
connecting to, 24, 148
Speaker ALC field, 152
212
Index
Main Menu
In d ex
description, 185
coupling, 127
B
for off-the-air measurements,
description, 187
bandwidth
136
for RF measurements, 136
gain at, 162
input attenuation, 135
Audio Out field
IF filter, 135
RF Generator screen, 127
audio power measurements, 116
Auto All
Base Freq field
Instrument Configure screen,
163
loss at, 162
Range Hold, 173
base settings
sensitivity, 150
Auto Zero field
changing, 50
Antenna In field
CDMA Analyzer screen, 95
RF Analyzer screen, 128
Auto/Norm field
Oscilloscope screen, 127
automatic level control, 152
autoranging
default, 50
Instrument Configure screen,
BASEBAND OUT connector, 187
basic operation, 33
battery, replacing, 53
baud rate, 180
beeper
error alert, 164
volume control, 160, 164
Beeper field
162
Arm Meas, 94
arrow down
key, 42
arrow up
AF/RF measurements, 173
gain setting, 134
oscilloscope interference, 134,
key, 42
ASCII terminal
configuring, 180
135
Instrument Configure screen,
ASSIGN, 52
spectrum analyzer interference,
160, 164
Assign key, 52
134, 135
bits
assistance
auto-tuning
serial data word, 165
call center, Europe, 199
call center, United States, 199
HP Direct, Canada, 199
HP Direct, Korea, 199
Atten Hold field
AF/RF measurements, 173
average power measurements, 82
averaging
measurement results, 46
restart averaging, 46
Avg 1-100 field
Bypass
CW RF Path, 98
bypass IQ modulator, 98
RF Generator screen, 126
attenuation
Spectrum Analyzer screen, 140
automatic control, 135
input, RF analyzer, 135
manual control, 135
attenuator hold, 126
attenuator input, 135
audio amplitude
Avg key, 46
Avg Pwr field
CDMA Analyzer screen, 82
CDMA Generator screen, 82
AWGN generator, 101
setting, 124, 125
audio frequency counter
gate time, 123
sampling, 123
audio frequency measurements,
37
Audio In
AF Anl In, 37
oscilloscope input, 72
AUDIO IN connector
avoiding damage to, 186
description, 186
for ac level measurements, 37
AUDIO IN HI connector, 186
AUDIO IN LO connector
600 ohm impedance, 127, 186
floating, 127, 186
grounded, 127, 186
Audio In Lo field
AF Analyzer screen, 127
Audio Out
oscilloscope input, 72
AUDIO OUT connector
Index
213
Main Menu
In d ex
C
Gen Mode field, 101
Gen Special field, 102
Magnitude Error field, 88
Output Port field, 105
Phase Error field, 88
RF Channel field, 109
RF Gen Freq field, 109
Rho field, 84
Analyzer field, 94
CarFT, 87
cable fault measurements, 62
calibration
CarFT field, 96
Controls field, 97
channel power measurements,
Freq Err field, 100
Input Port field, 103
Lvl field, 103
96
spectrum analyzer, 68
CarFT field
Meas Intvl field, 103
Measurement field, 104
Num Avgs field, 104
Ofs Trnsfer field, 105
Pwr Scale field, 107
Qual Event field, 108
RF Channel field, 109
RF In/Ant field, 110
Threshold field, 110
Time Offset field, 111
TmOfs field, 85, 111
Trig Event field, 112
Walsh Chan field, 113
code domain phase
measurements, 92
code domain power
measurements, 90
code domain timing
measurements, 91
Configure Instrument screen
RF Offset field, 178
Serial No. field, 180
Time field, 181
Code Domain Analyzer screen,
Time Offset field, 85
87, 96
Center Freq field
carrier feedthrough
measurements, 87
Carrier Feedthru field
CDMA Analyzer screen, 87
CDMA Generator screen, 87
catalog memory card, 66
CDMA Analyzer screen
ADC FS field, 82, 83, 93
Analyzer field, 94
Spectrum Analyzer screen, 128
center frequency, 112, 119
for notch filter, 141
for spectrum analyzer, 128
RF signal, 156
spectrum analyzer marker, 139
Chan
RF Display mode, 109, 176
Chan Pwr field
Anl Dir field, 95
CDMA Analyzer screen, 83
CDMA Generator screen, 83
Chan Space field
Anl Special field, 95
Auto Zero field, 95
Avg Pwr field, 82
Instrument Configure screen,
Carrier Feedthru field, 87
Chan Pwr field, 83
Chn Pwr Cal field, 96
Even Sec In field, 100
EVM field, 88
164
channel numbers
for analyzer/generator
frequencies, 40
channel power measurements, 83
channel spacing, user defined,
164
Freq Error field, 85
Gain field, 100
Input Atten field, 102
Input Port field, 103
Magnitude Error field, 88
Meas Intvl field, 103
Phase Error field, 88
PN Offset field, 106
Pwr Gain field, 106
Pwr Intvl field, 107
Pwr Zero field, 107
Qual Event field, 108
RF Channel field, 109
Rho field, 84
channel standard
Total RAM field, 181
AMPS (MS, LS), 175
ETACS (MS, LS), 175
J TACS (MS, LS), 175
KOR PCS (1, 0), 175
N AMER PCS, 175
NAMPS(MSL, MSM, MSU,
LSL, LSM, LSU), 175
NTACS (MS, LS), 175
TACS (MS, LS), 175
USER-DEF, 175
connectors
10 MHz REF OUTPUT, 184
16 x CHIP CLOCK, 184
19.6608 MHz OUT, 184
ANALOG MODULATION IN,
184
ANT IN, 185
AUDIO IN, 186
AUDIO OUT, 187
BASEBAND OUT, 187
CHIP CLOCK 1.2288 MHz
OUT, 188
channel tuning, 40, 109, 176
chassis ground, 188
CHIP CLOCK 1.288 MHz OUT
connector, 188
Time Offset field, 85
Trig Event field, 112
CDMA Anl key, 25
CDMA Gen key, 25
CDMA Generator screen
ADC FS field, 82, 83, 93
Amplitude field, 93
Avg Pwr field, 82
DATA IN, 188
DUPLEX OUT, 188
EVEN SECOND SYNC IN, 189
EXT REF IN, 189
Chn Pwr Cal field
CDMA Analyzer screen, 96
clear
EXT SCOPE TRIG IN, 189
FRAME CLOCK OUT, 190
ground, 188
global user key assignment, 52
RAM, 76
Carrier Feedthru field, 87
Chan Pwr field, 83
CW RF Path field, 98
Data Rate field, 98
Data Source field, 99
EVM field, 88
register contents, 49, 76
HP-IB, 190
clock
I BASEBAND OUT, 187
PARALLEL PORT 15, 191
PARALLEL PORT 16, 191
Q BASEBAND OUT, 187
RF IN/OUT, 192
date/time, 165
time-of-day, 181
Code Dom key, 25
Code Domain Analyzer screen
ADCfs field, 93
Freq Error field, 85
Gen Dir field, 101
214
Index
Main Menu
In d ex
SCOPE MONITOR OUTPUT,
192
D
AM, 37, 72
FM, 37, 72
dashes
SERIAL PORT 10, 193
SERIAL PORT 11, 193
SERIAL PORT 9, 193
TRIGGER QUALIFIER IN, 194
VIDEO OUT, 194
Cont/Single field
Oscilloscope screen, 128
continuous measurements, 94
Controls field
SSB, 37, 72
meaning of, squelch, 153
depth, AM, 37
meaning of, TX power
measurements, 36, 120
Data Buff
detector
peak, 130, 143
rms, 130
data source, 99
selecting, 130
data buffer, 101
data collection, 66
data files, replotting, 65
data files, transferring, 65
DATA IN connector, 188
Data Length field
I/O Configure screen, 165
Data Rate field
CDMA Generator screen, 98
Data Source field
CDMA Generator screen, 99
date and time, 160
Date field
Detector field
AF Analyzer screen, 130
deviation
Code Domain Analyzer screen,
FM, 37, 118, 121
Disarm, 94
97
Oscilloscope screen, 128
Spectrum Analyzer screen, 128
COPY_PL, IB_UTIL ROM
program, 74
Distn field
AF Analyzer screen, 118
RF Analyzer screen, 118
RF Generator screen, 118
distortion, 38
counter
AF, 123
measurements, 38, 118
measurements, amplifier, 142
measurements, variable notch
filter, 141
RF, 147
coupling
Instrument Configure screen,
ac, 127, 133
160, 165
dc, 127, 133
dump graphics, 161
DUPLEX OUT connector
avoiding damage, 143
description, 188
gain at, 166
dB key, 26
notch frequency, 171
cursor control knob
increment setting of, 42
CW RF Path field
CDMA Generator screen, 98
dBm key, 26
dBuV key, 26
dc coupling
input, 133
loss at, 166
output, 127
Duplex Out field
Instrument Configure screen,
166
DC Level field
AF Analyzer screen, 117
dc level measurements, 38, 117
DCFM, 133
decimal numbers, 30
decrement
changing setting, 42
De-emp
oscilloscope filters, 72
De-Emp Gain field
AF Analyzer screen, 129
de-emphasis
bypassing, 129
gain, 129
selecting, 129
De-Emphasis field
AF Analyzer screen, 129
default settings
base, 50
changing, 49, 50
power-on, 49
delay
trigger, 112
delete
global user key assignment, 52
RAM contents, 76
register contents, 49, 76
DEMO, 78
demodulation
Index
215
Main Menu
In d ex
E
F
meaning of, TX power
measurements, 120
FRAME CLOCK OUT connector,
190
Frame Clock Output field
Instrument Configure screen,
169
Eb/No, 101
fast power measurements, 91
FF at End field
Printer Configure screen, 167
FF at Start field
Printer Configure screen, 167
fields
EEX key, 30
emf voltage, 176
Error Message key, 25
error messages, 204
IBASIC echo, 170
operation, 208
Freq
changing settings, 25
RF Display mode, 109, 112, 176
Freq (marker) field
Spectrum Analyzer screen, 133
Freq Err field
error vector magnitude. See EVM
ETACS, 175
types of, 25
FILE_XFER, IB_UTIL ROM
program, 74
European Call Center, assistance,
199
files
Code Domain Analyzer screen,
Even Sec In field
securing, 75
100
CDMA Analyzer screen, 100
EVEN SECOND SYNC IN
connector, 189
Filter 1 field
Freq Error field
AF Analyzer screen, 131
CDMA Analyzer screen, 85
CDMA Generator screen, 85
frequency
Filter 2 field
AF Analyzer screen, 132
Filters
EVM field
CDMA Analyzer screen, 88
CDMA Generator screen, 88
EVM measurements, 88
exponents
AF generator 2, 125
oscilloscope filters, 72
AFGen1, 124
filters
center, 118, 119
IF bandwidth, 135
variable notch, 141
firmware
center, for notch filter, 141
center, for spectrum analyzer,
128
entering numbers, 30
Ext
data source, 99
revision number, 167
center, RF signal, 156
effects of RF offset, 178
measurements, 119
RF generator, reference, 163
setting, 148, 176
Ext Load R field
Firmware field
AF Analyzer screen, 131
Instrument Configure screen,
Ext Mod
167
AF Anl In, 37
floating input
oscilloscope input, 72
EXT REF IN connector, 189
Ext Ref In field
at AUDIO IN LO, 127
Flow Control field
I/O Configure screen, 168
FM
span, 151
spectrum analyzer, 133
frequency error
Instrument Configure screen,
measurements, 85, 119
Frequency Error field
AF Analyzer screen, 119
RF Analyzer screen, 119
RF Generator screen, 119
Frequency field
AF Analyzer screen, 119
RF Analyzer screen, 119
RF Generator screen, 119
frequency offset, 47
receiver/transmitter, 169
RF generator/analyzer, 169
tracking generator, 142
frequency tuning, 40, 109, 176
functional test
166
deviation, 37
EXT SCOPE TRIG IN connector,
deviation, measurements, 118,
189
121
deviation, setting, 124, 125
external AM input, 140
external FM input, 140
external modulation input, 140
external monitor, 197
external reference, 189
external trigger qualifier, 108
input, 140
FM Coupling field
RF Generator screen, 133
FM Demod
AF Anl In, 37
oscilloscope input, 72
FM Deviation field
AF Analyzer screen, 118, 121
RF Analyzer screen, 118, 121
RF Generator screen, 118, 121
FM deviation measurements, 37,
38
for verifying operation, 31
FM Mod
AF Anl In, 37
oscilloscope input, 72
form feed, 167
forward link, 95
four dashes
meaning of, squelch, 153
meaning of, TX power
measurement, 36
216
Index
Main Menu
In d ex
G
at AUDIO IN LO, 127
H
grounding, 188
gain
heading
automatic control, 134
for printout, 172
between ANT IN and
device-under-test, 162
between DUPLEX OUT and
device-under-test, 166
between RF IN/OUT and
device-under-test, 177
de-emphasis, 129
help
how to contact a human, 199
Help key, 25
hexadecimal format, 30
HI indicator, 43
Hi Limit key, 43
high limit
input, 136
removing, 44
manual control, 134
setting, 43
notch filter, 142
Hold All
Gain Cntl field
Range Hold, 173
horizontal sweep
oscilloscope, 154
HP Direct assistance
Canada, 199
AF Analyzer screen, 134
Gain field
CDMA Analyzer screen, 100
gain measurement, swept, 58
gate time, 123
Korea, 199
RF counter, 147
HP-IB address
test set, 170
Gen Dir field
CDMA Generator screen, 101
HP-IB Address field
Configure I/O screen, 170
HP-IB connector, 190
HP-IB operation
squelch effects, 153
Hz key, 26
Gen Mode field
CDMA Generator screen, 101
Gen Special field
CDMA Generator screen, 102
(Gen)-(Anl) (user defined) field
Instrument Configure screen,
169
(Gen)-(Anl) field
Instrument Configure screen,
169
generator, AF
amplitude, 124, 125
frequency, 124, 125
output destination, AUDIO
OUT connector, 124, 125
output destination, RF
generator AM modulator,
124, 125
output destination, RF
generator FM modulator,
124, 125
turning off, 124, 125
generator, RF
amplitude, 126
frequency, 148
output port, 143, 144
reference frequency, 163
generator, tracking
frequency, 128
frequency offset, 142
output port, 144
sweep, 144
sweep frequency range, 151
GHz key, 26
grounded input
Index
217
Main Menu
In d ex
I
input attenuation
IQ
automatic control, 135
manual control, 135
setting, 135
CW RF path, 98
I BASEBAND OUT connector,
IQ modulator, 98
187
IQ RFOUT
connector, 98
I/O Config key, 25
I/O Configure screen
Data Length field, 165
Flow Control field, 168
HP-IB Address field, 170
IBASIC Echo field, 170
Inst Echo field, 170
Mode field, 171
input attenuator
oscilloscope, 134, 135
spectrum analyzer, 134, 135
Input Gain field
AF Analyzer screen, 136
input impedance
selecting, 186
Input Port field
Parity field, 172
CDMA Analyzer screen, 103
Code Domain Analyzer screen,
103
Save/Recall field, 179
Serial Baud field, 180
Serial In field, 180
Stop Length field, 181
IB_UTIL
Instrument Configure screen,
136
RF Analyzer screen, 136
Spectrum Analyzer screen, 136
insertion loss measurements
discrete frequency, 59
swept, 59
COPY_PL, 74
FILE_XFER, 74
RAM_MANAGER, 76
RAM_USAGE, 74
ROM program, 74
SECURE_IT, 75
Inst Config key, 25
Inst Echo field
IBASIC controller
configuring, 180
I/O Configure screen, 170
Instrument Configure screen
Antenna In field, 162
Base Freq field, 163
Beeper field, 160, 164
Chan Space field, 164
Date field, 160, 165
Duplex Out field, 166
Ext Ref In field, 166
Firmware field, 167
Frame Clock Output field, 169
(Gen)-(Anl) field, 169
Input Atten field, 135
Input Port field, 136
Notch Coupl field, 171
Range Hold field, 173
Ref Select field, 174
RF Chan Std field, 175
RF Display field, 176
RF Gen Volts field, 176
RF In/Out field, 177
RF Level Offset field, 178
Time field, 160
IBASIC Echo field
I/O Configure screen, 170
IBASIC error messages, 170
IF filter bandwidth
selecting, 135
IF Filter field
RF Analyzer screen, 135
impedance
input, 186
Incr (divide-by)10 key, 42
Incr Set key, 42
Incr x10 key, 42
increment
changing setting, 42
Input
oscilloscope filters, 72
input
analyzer, 148
audio, 600 ohm impedance, 127
audio, floating, 127
audio, grounded, 127
coupling, 133
User Def Base Freq field, 163
gain, 136
interactions
RF, 136
high-power/low-power
measurements, 157
Range Hold and other fields,
173
spectrum analyzer, 148
types of, 123
Input Atten field
CDMA Analyzer screen, 102
Instrument Configure screen,
135
RF generator/analyzer, RF
offset, 178
Internal field
RF Analyzer screen, 135
Oscilloscope screen, 137
Spectrum Analyzer screen, 135
218
Index
Main Menu
In d ex
J
K
increment setting, 42
J TACS, 175
k1 through k5 keys, 51
k1’ through k3’ keys, 51
keyboard
external, 180
keys
%, 26
% delta, 26
+/-, 30
AF Anl, 25
Assign, 52
Avg, 46
CDMA Anl, 25
CDMA Gen, 25
Code Dom, 25
dB, 26
dBm, 26
dBuV, 26
down-arrow, 42
EEX, 30
Error Message, 25
GHz, 26
Help, 25
Hi Limit, 43
Hz, 26
I/O Config, 25
Incr (divide-by)10, 42
Incr Set, 42
Incr x10, 42
Inst Config, 25
k1 through k5, 51
k1’ through k3’, 51
kHz, 26
Lo Limit, 43
Meter, 39
MHz, 26
ms, 26
mV, 26
mW, 26
On/Off, 39, 44, 45, 46, 49
ppm, 26
Printer Config, 25
Recall, 48
Ref Set, 45
Release, 52
RF Anl, 25
RF Gen, 25
s, 26
Save, 48
Scope, 25
Spec Anl, 25
up-arrow, 42
uV, 26
V, 26
W, 26
kHz key, 26
knob
Index
219
Main Menu
In d ex
L
M
carrier feedthrough, 87
channel power, 83
code domain phase, 92
code domain power, 90
code domain timing, 91
dc level, 38, 117
deviation, FM, 118
distortion, 38, 118
EVM, 88
level
Magnitude Error field
CDMA Analyzer screen, 88
CDMA Generator screen, 88
magnitude error measurements,
88
ac, 37
dc, 38
oscilloscope, 138
reference for spectrum analyzer,
146
manuals, 197
Level (div) field
Marker To field
Oscilloscope screen, 137
Spectrum Analyzer screen, 139
Marker To Peak- field
Oscilloscope screen, 139
Marker To Peak+ field
Oscilloscope screen, 139
markers
fast power, code domain, 91
FM demodulation, 37, 38
FM deviation, 37, 121
frequency error, 85, 119
frequency, center, 119
insertion loss, discrete
frequency, 59
limits
indicators, 43
pass/fail, 43
removing, 44
setting, 43
Lines/Page field
Printer Configure screen, 171
LISTOPTS, 77
frequency, 133
level, 138
insertion loss, swept, 59
magnitude error, 88
phase error, 88
oscilloscope, 73, 139
oscilloscope, peak-, 139
oscilloscope, peak+, 139
spectrum analyzer, 139
spectrum analyzer, center
frequency, 139
LO indicator, 43
Lo Limit key, 43
loss
return loss, swept, 60
RF, 36
between ANT IN and
device-under-test, 162
between DUPLEX and
device-under-test, 166
between RF IN/OUT and
device-under-test, 177
low limit
RF power, 120
rho, 84
spectrum analyzer, peak, 139
spectrum analyzer, reference
level, 139
rms potential, 116
signal/noise ratio, 38
SINAD, 38, 122
time, 154
SNR, 38, 122
triggering, 154
swept gain, 58
removing, 44
Meas Intvl field
time offset, 85
setting, 43
CDMA Analyzer screen, 103
Code Domain Analyzer screen,
103
measurement accuracy
gain control for, 134
zeroing power for, 157
measurement averaging, 46
Measurement field
Code Domain Analyzer screen,
104
transmitter power, 36, 120
transmitter power, peak, 156
transmitter power, sample, 156
voltage, 116
low-level RF power
measurements, 120
Lucent software, 198
Lvl (marker) field
Oscilloscope screen, 138
Spectrum Analyzer screen, 138
Lvl field
memory
considerations, 50
total RAM, 181
memory card catalog, 66
memory overflow error, 50
message
Code Domain Analyzer screen,
103
measurement limits
indicators, 43
beeper alert, 164
displaying, 160
removing, 44
error, 204
setting, 43
IBASIC error, 170
measurement reference, setting,
operation, 208
45
turn off, 160
measurement settling time, 151
measurement setups
saving and recalling, 48
measurements
types of, 204
meter
end points, 39
on/off, 39
ac level, 37, 116
scale interval, 39
ac level, peak detector, 143
Meter key, 39
ADC FS, 82, 83
MHz key, 26
AF frequency, 38
uV (microvolts) key, 26
Mod In To field
AM depth, 37
audio frequency, 37
RF Generator screen, 140
audio power, 116
average power, 82
cable fault, 62
Mode field
I/O Configure screen, 171
220
Index
Main Menu
In d ex
Model field
N
O
Printer Configure screen, 171
names
offset
modulation
printout, 172
frequency,
receiver/transmitter, 169
frequency, RF
generator/analyzer, 169
external AM, 140
external, FM, 140
external, input, 140
input, 140
registers, 49
NAMPS, 175
negative edge
triggering, 137
frequency, tracking generator,
input, coupling, 133
No Pk/Avg field
142
RF generator/analyzer, 178
RF level, 178
OQPSK, 101
Spectrum Analyzer screen, 140
QPSK, 101
Normalize field
sensitivity, input, 140
monitor, external, 197
ms key, 26
Spectrum Analyzer screen, 141
Nortel software, 198
Notch
oscilloscope filters, 72
Notch Coupl field
Instrument Configure screen,
171
setting, frequency, 47
vertical, oscilloscope, 138, 158
Offset Freq (Tracking Gen) field
Spectrum Analyzer screen, 142
off-the-air measurements, 136,
185
mV key, 26
mW key, 26
Ofs Trnsfer field
used with variable notch, 141
Code Domain Analyzer screen,
notch filter
105
gain, 142
On/Off key, 39, 44, 45, 46, 49
operating basics, 33
operation messages, 208
options, for Test Set, 198
options, Test Set, 77
OQPSK modulation, 101
oscilloscope
variable, 141
Notch Freq field
AF Analyzer screen, 141
Notch Gain field
AF Analyzer screen, 142
NTACS, 175
Num Avgs field
description of, 71
Code Domain Analyzer screen,
features, 71
104
filters, block diagram of, 71
filters, selection of, 72
input attenuator, 134, 135
inputs, block diagram of, 71
inputs, selection of, 72
level, markers, 138
marker types, 139
number of frames
data source, 99
numbers
decimal format, 30
hexadecimal format, 30
negative, 30
scientific notation, 30
markers, 73
markers, level, 138
resolution, 149
scale, 145
signal source, 149
squelch effects, 153
triggering, 73
oscilloscope interference
autoranging, 134, 135
Oscilloscope screen
Auto/Norm field, 127
Cont/Single field, 128
Controls field, 128
Internal field, 137
Level (div) field, 137
Lvl (marker) field, 138
Marker To Peak- field, 139
Marker To Peak+ field, 139
Output Port field, 143
Position field, 145
Reset field, 146
Time (marker) field, 154
Index
221
Main Menu
In d ex
Time/div field, 154
Trig-Delay field, 155
Vert Offset field, 158
Vert/div field, 158
P
changing, 50
default, 50
PARALLEL PORT 15 connector,
print
191
screens, 161
PARALLEL PORT 16 connector,
output
Print Title field
191
parallel port pin assignments, 191
Parity field
coupling, 127
Printer Configure screen, 172
RF, 143, 144
printer
tracking generator, 144
Output Port field
connecting, 172
I/O Configure screen, 172
pass/fail limits, 43
password, 75
model, 171
CDMA Generator screen, 105
Oscilloscope screen, 143
RF Generator screen, 143
Spectrum Analyzer screen, 143
overpower
setup utility, 66
Printer Config key, 25
Printer Configure screen
Abort Print field, 162
FF at End field, 167
FF at Start field, 167
Lines/Page field, 171
Model field, 171
PC card catalog, 66
PCS
Korean channel standard, 175
North American channel
standard, 175
at RF IN/OUT connector, 136
damage, at ANT IN, 36
damage, at ANT IN connector,
120, 148
Peak
TX Pwr Meas field, 156
Print Title field, 172
Printer Port field, 172
Printer Port field
Printer Configure screen, 172
printing
peak
damage, at DUPLEX, 143
hold, spectrum analyzer, 140
spectrum analyzer marker, 139
peak-
oscilloscope marker, 139
peak detector, 130, 143
signal source, 143
peak+
warning, 136
overpower damage, 24
overview of operation, 33
aborting, 162
form feed, 167
lines per page, 171
printer model, 171
selecting printer port, 172
title, 172
oscilloscope marker, 139
% delta key, 26
% key, 26
Pwr Gain field
Phase Error field
CDMA Analyzer screen, 88
CDMA Generator screen, 88
phase error measurements, 88
Pk Det To field
CDMA Analyzer screen, 106
Pwr Intvl field
CDMA Analyzer screen, 107
Pwr Scale field
Code Domain Analyzer screen,
AF Analyzer screen, 143
107
Pk Hold field
Spectrum Analyzer screen, 140
PN Offset field
Pwr Zero field
CDMA Analyzer screen, 107
CDMA Analyzer screen, 106
Port/Sweep (Tracking Gen)
Spectrum Analyzer screen, 144
Position field
Oscilloscope screen, 145
positive edge
triggering, 137
power
average, 82
channel, 83
code domain, 90
code domain, fast, 91
transmitter, 36
zero reference, 157
power meter
zeroing, 157
power-on settings
changing, 49
ppm key, 26
preset state
222
Index
Main Menu
In d ex
Q
R
return loss measurements, swept,
60
Q BASEBAND OUT connector,
radio test software, 198
reverse link, 95
187
RAM
reverse RF power, 143
QPSK modulation, 101
back-up batteries, 53
clearing, 76
disk allocations, 74
loss of data, 53
revision number
Qual Event field
firmware, 167
CDMA Analyzer screen, 108
Code Domain Analyzer screen,
108
RF Analyzer screen
AC Level field, 116
AF Freq field, 117
AM Depth field, 116
Amplitude field, 126
Auto Zero field, 128
Distn field, 118
total available, 181
total installed, 74
RAM_MANAGER, IB_UTIL ROM
program, 76
RAM_USAGE, IB_UTIL ROM
program, 74
FM Deviation field, 118, 121
Frequency Error field, 119
Frequency field, 119
IF Filter field, 135
Input Atten field, 135
Input Port field, 136
RF Channel field, 147
RF Cnt Gate field, 147
Sensitivity field, 150
SINAD field, 122
random
data source, 99
Range Hold field
Instrument Configure screen,
173
recall
instrument setups, 48
saved register with hardware
change, 50
settings, 48
SNR field, 122
Recall key, 48
Squelch field, 153
Tune Freq field, 156
TX Power field, 120
TX Pwr Meas field, 156
TX Pwr Zero field, 157
RF Anl key, 25
Ref Level field
Spectrum Analyzer screen, 146
Ref Select field
Instrument Configure screen,
174
Ref Set key, 45
RF Chan Std field
Instrument Configure screen,
175
reference
external input, 189
external output, 184
level, spectrum analyzer, 146
setting, 45, 138
RF Channel field
CDMA Analyzer screen, 109
CDMA Generator screen, 109
Code Domain Analyzer screen,
109
transmitter power, zero, 157
Reference indicators, 45
registers
RF Analyzer screen, 147
clearing, 49
RF Cnt Gate field
naming, 49
RF Analyzer screen, 147
RF counter
release
global user key assignment, 52
sampling, 147
Release key, 52
RF Display field
remote operation
mode, 171
Instrument Configure screen,
176
squelch effects, 153
remove high/low limits, 44
remove pass/fail limits, 44
remove register contents, 49
replot data files, 65
Reset field
RF Gen Freq field
CDMA Generator screen, 109
RF Generator screen, 148
Spectrum Analyzer screen, 148
RF Gen key, 25
RF Gen Volts field
Instrument Configure screen,
176
Oscilloscope screen, 146
resolution
bandwidth, spectrum analyzer,
RF generator
68
amplitude, 126
oscilloscope, 149
frequency, 148
Index
223
Main Menu
In d ex
output, 144
measurements, 120
zero reference, 157
RFTOOLS
S
output port, 143
RF Generator screen
AF Freq field, 117
s key, 26
Sample
cable fault measurements, 62
catalog memory card, 66
discrete frequency insertion loss
measurements, 59
replot data files, 65
SA Self Calibration ON/OFF, 65
Set Up Printer/Data Collection,
66
swept gain measurements, 58
swept insertion loss
measurements, 59
swept return loss
measurements, 60
transfer stored data, 65
Rho field
CDMA Analyzer screen, 84
CDMA Generator screen, 84
rho measurements, 84
rms detector, 130
rms potential
TX Pwr Meas field, 156
AFGen1 Freq field, 124
AFGen1 To field, 124
AFGen2 Freq field, 125
AFGEN2 To field, 125
AM Depth field, 116
Amplitude field, 126
Atten Hold field, 126
Audio Out field, 127
Distn field, 118
sampling
AF counter, 123
RF counter, 147
Samsung software, 198
save
instrument setups, 48
settings, 48
Save key, 48
save register memory allocations,
FM Coupling field, 133
FM Deviation field, 118, 121
Frequency Error field, 119
Frequency field, 119
Mod In To field, 140
Output Port field, 143
RF Gen Freq field, 148
SINAD field, 122
74
Save/Recall field
I/O Configure screen, 179
saving instrument setups, 48
saving settings, 48
scale
for oscilloscope, 145
scientific notation
entering numbers, 30
scope
SNR field, 122
RF In/Ant field
Code Domain Analyzer screen,
measurements, 116
horizontal sweep, 154
level, markers, 138
markers, 138
110
ROM program
Spectrum Analyzer screen, 148
RF IN/OUT connector
connecting to, 24
SERVICE4. See the HP 8935
Assembly Level Repair
Manual.
vertical offset, 158
Scope key, 25
description, 192
ROM programs
SCOPE MONITOR OUTPUT
connector, 192
for measuring high-power
devices, 144
COPY_PL, 74
DEMO, 78
Scope To field
for measuring transmitter
power, 136
FILE_XFER, 74
AF Analyzer screen, 149
scope. See oscilloscope.
screen dump, 161
screens
IB_UTIL, 74
for RF measurements, 136
for testing transceivers, 143
gain at, 177
LISTOPTS, 77
RAM_MANAGER, 76
RAM_USAGE, 74
RFTOOLS, 56
printing, 161
input attenuation, 135
SECURE_IT, IB_UTIL ROM
program, 75
loss at, 177
SECURE_IT, 75
power measured at, 120
ST_PLT, 79
securing files, 75
RF In/Out field
sensitivity
Instrument Configure screen,
adverse effects on
measurements, 150
ANT IN, 150
177
RF input, 103, 110
selecting port, 136
RF Level Offset field
Instrument Configure screen,
178
modulation input, 140
Sensitivity field
RF Analyzer screen, 150
Spectrum Analyzer screen, 150
Serial Baud field
I/O Configure screen, 180
serial data word
bits, 165
RF measurements, 36
RF offset
setting, 47
RF Offset field
Configure Instrument screen,
Serial In field
178
I/O Configure screen, 180
RF output
Serial No. field
selecting port, 143, 144
Configure Instrument screen,
RF power
180
exceeding limits, 136
SERIAL PORT 10 connector, 193
224
Index
Main Menu
In d ex
SERIAL PORT 11 connector, 193
SERIAL PORT 9 connector, 193
serial port pin assignments, 193
SERVICE4. See the HP 8935
Assembly Level Repair
Manual.
Span field
fixed level, 153
manual control, 153
off, 153
Spectrum Analyzer screen, 151
speaker
ALC, 152
using attenuator hold, 126
disabling, 152
Squelch field
RF Analyzer screen, 153
SSB Demod
volume control, 152
settings
Speaker ALC
base, 50
AF Analyzer screen, 152
Speaker Vol field
AF Anl In, 37
beeper volume, 160
changing, field, 25
date, 160
oscilloscope input, 72
AF Analyzer screen, 152
ST_PLT, 79
Spec Anl key, 25
Start Frame
default, 49, 50
spectrum analyzer
calibration, 68
data source, 99
power-on, 49
stop bit, 181
recalling, 48
calibration, self, 65
frequency, markers, 133
input attenuator, 134, 135
input port, 148
Stop Length field
I/O Configure screen, 181
support, 199
saving, 48
time, 160
Settling field
sweep
AF Analyzer screen, 151
interference when autoranging,
frequency range, tracking
generator, 151
settling time
134, 135
AF measurements, 151
setups
markers, 139
oscilloscope, 154
rate, spectrum analyzer, 68
time per division, 154
tracking generator, 144
swept gain measurements, 58
swept return loss measurements,
60
markers, frequency, 133
measuring low-level RF power,
120
recalling, 48
saving, 48
signal to noise ratio, 37
signal/noise ratio
measurements, 38
simultaneous AM and FM (not
allowed), 124, 125
SINAD
resolution bandwidth, 68
span, 68
squelch effects, 153
sweep rate, 68
traces, 141
use of, 120
measurements, 122
measurements, amplifier, 142
measurements, variable notch
filter, 141
Spectrum Analyzer screen
Amplitude field, 126
Avg 1-100 field, 140
Center Freq field, 128
Controls field, 128
Freq (marker) field, 133
Input Atten field, 135
Input Port field, 136
Lvl (marker) field, 138
Marker To field, 139
No Pk/Avg field, 140
Normalize field, 141
Offset Freq (Tracking Gen) field,
142
SINAD field
AF Analyzer screen, 122
RF Analyzer screen, 122
RF Generator screen, 122
SINAD measurements, 38
Single, 94
SNR
measurements, 38, 122
SNR field
AF Analyzer screen, 122
RF Analyzer screen, 122
RF Generator screen, 122
SNR measurements, 38
software
Output Port field, 143
Pk Hold field, 140
Port/Sweep (Tracking Gen), 144
Ref Level field, 146
RF Gen Freq field, 148
RF In/Ant field, 148
Sensitivity field, 150
Span field, 151
automated testing, 198
Lucent, 198
Nortel, 198
Samsung, 198
source
Track/Fixed field, 154
oscilloscope, 149
peak detector, 143
span
squelch
effects on HP-IB operation, 153
effects on remote operation, 153
effects on spectrum analyzer,
153
effect on AF analyzer, 151
spectrum analyzer, 68
Index
225
Main Menu
In d ex
T
Trig-Delay field
U
Oscilloscope screen, 155
TRIGGER QUALIFIER IN
connector, 194
TACS, 175
U.S. Call Center, assistance, 199
User Def Base Freq field
Configure Instrument screen,
163
talk & listen, 171
Threshold field
TRIGGER/QUALIFIER IN
connector, 108
Code Domain Analyzer screen,
110
user keys
triggering
time
markers, 154
assigning global, 52
assigning, local, 52
clearing, global assignment, 52
deleting, global assignment, 52
explanation, 51
automatic, 127
continuous, 128
Time (marker) field
Oscilloscope screen, 154
time and date, 160
Time field
external, oscilloscope, 137
external, oscilloscope connector,
189
global, assignment, 52
global, defined, 51
local, defined, 51
internal, 137
Configure Instrument screen,
internal, oscilloscope, 137
181
level, 127
negative edge, 137
oscilloscope, 73
positive edge, 137
signal, 127
source, oscilloscope, 137
Instrument Configure screen,
preassigned, 51
160
releasing, global assignment, 52
releasing, local assignment, 52
setting, global, 52
Time Offset field
CDMA Analyzer screen, 85
CDMA Generator screen, 85
Code Domain Analyzer screen,
111
utilities
catalog memory card, 66
time, 154
data collection, 66
Tune Freq, 112
time offset measurements, 85
data collection, transferring
data, 65
Tune Freq field
Time/div field
RF Analyzer screen, 156
Oscilloscope screen, 154
timebase
printer setup, 66
tuning
replot data files, 65
spectrum analyzer self
calibration, 65
channel versus frequency, 40
channel, automatic, 176
turning off squelch, 153
TX Power field
AF Analyzer screen, 120
RF Analyzer screen, 120
TX Pwr Meas field
RF Analyzer screen, 156
TX Pwr Zero
external output, 184
title
for printout, 172
TmOfs field
uV key, 26
Code Domain Analyzer screen,
85, 111
Total RAM field
Configure Instrument screen,
181
AF Analyzer screen, 157
TX Pwr Zero field
RF Analyzer screen, 157
trace
comparison, spectrum analyzer,
141
spectrum analyzer, 141
Track/Fixed field
Spectrum Analyzer screen, 154
tracking generator
enabling, 154
frequency, 128
frequency offset, 142
output, 144
output port, 144
sweep, 144
training, 200
transmitter power, 36
measurements, 120
Peak, 156
Sample, 156
zero reference, 157
Trig Event field
CDMA Analyzer screen, 112
Code Domain Analyzer screen,
112
226
Index
Main Menu
In d ex
V
W
X
V key, 26
W key, 26
Xon/Xoff, 168
variable frequency notch filter,
Walsh Chan field
Code Domain Analyzer screen,
113
141
version number
firmware, 167
web site
Hewlett-Packard Test and
Vert Offset field
Oscilloscope screen, 158
Measurement
Organization, 199
www.tmo.hp.com, 199
Vert/div field
Oscilloscope screen, 158
vertical offset
oscilloscope, 138, 158
vertical sensitivity
oscilloscope, 158
video averaging
spectrum analyzer, 140
VIDEO OUT connector, 194
voltage
measurements, 116
RF, across 50 ohm load, 176
RF, emf (open circuit), 176
volume
beeper, 160, 164
internal speaker, 152
Index
227
Main Menu
In d ex
Z
zero reference
transmitter power, 157
Zeroes
data source, 99
zeroing
power meter, 157
228
Index
Main Menu
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