Telenetics Network Card 202T S User Manual

Installation, Operation & Diagnostics  
for the  
MIU202T-S  
Industrial Grade, Bell 202T-S  
Standalone Modem  
Document No. 49-0002-017 Rev. A  
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TABLE OF CONTENTS  
1. STANDARDS.............................................................................................. 2  
2. PRODUCT OVERVIEW........................................................................... 3  
3. GENERAL PRODUCT SPECIFICATIONS............................................ 4  
4. MODEM SPECIFICATIONS ................................................................... 5  
5. ANALOG LINE SPECIFICATIONS ........................................................ 7  
6. ANALOG MICROWAVE INTERFACE.................................................. 8  
7. POWER CONNECTIONS........................................................................ 10  
8. SERIAL DATA PORT PIN-OUT ............................................................ 11  
9. DIP SWITCH FUNCTIONS..................................................................... 12  
10. MODEM CONFIGURATION ................................................................. 14  
11. LED INDICATOR..................................................................................... 15  
12. OUTLINE DRAWING & MOUNTING.................................................. 16  
13. DIAGNOSTICS ......................................................................................... 17  
1. STANDARDS  
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Meets FCC Rules Part J, Subpart 15, Class A for radiated emissions.  
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2.  
PRODUCT OVERVIEW  
The MIU202T is an industrial grade Bell202T modem for connection to  
unconditioned and conditioned, voice grade, type 3002 two or four-wire  
leased lines and metallic lines (eg; pilot wires). It can be powered from a  
wide range of AC and DC power supplies, it is internally surge protected  
on both the power and analog lines, and it will operate in temperatures  
from -40 to +85 deg C.  
Internally, the MIU202T consists of a baseboard and a communication  
module. The baseboard includes the power supply regulation and surge  
protection. The communication module is a Telenetics™ Pony  
ExpressPE202T-S Modem Module.  
The MIU202T is packaged specifically for the harsh environments found  
in utility substations and industrial facilities. Though functionally similar  
to commercial modems, the MIU202T includes special features that make  
it particularly well suited for utility and industrial applications:  
Environment:  
The MIU202T has been designed specifically for use  
in harsh environments. In addition to an extended  
temperature range (-40 to +85º C), the MIU202T  
includes surge, shock, vibration, and safety features  
superior to those of conventional commercial  
modems.  
Power Supply:  
Industrial:  
The MIU202T can be powered from a broad range of  
AC and DC power supplies, such as an auxiliary  
supply (eg; 12VDC) from another piece of  
equipment, 125VDC from a station battery or a  
standard 120VAC.  
The MIU is packaged in a rugged, compact, non-  
metallic (ABS) enclosure. Designed for unmanned  
locations, the MIUs do not include the array of  
pushbuttons and LEDs normally associated with  
consumer-type modems. Configuration is by dip  
switches. Standard industrial connectors for data,  
analog and power interfaces allow reliable  
interconnection to other industrial components.  
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3. GENERAL PRODUCT SPECIFICATIONS  
Dimensions:  
Weight:  
5.3 x 4.0 x 1.375 inches  
1 lb  
Voltage Supply: Standard Model:  
LV Model (Suffix “-LV”):  
Current Requirements:  
40 to 270VDC  
40 to 270VAC, 50/60Hz  
9 to 36VDC  
12VDC  
65mA  
24VDC  
27mA  
125VDC  
7.5mA  
120VAC  
6.5mA  
220VAC  
5.5mA  
Surge Protection: Power Supply: 8kVrms  
Analog Line:  
Digital Line:  
3.75kVac  
ESD ± 10kV  
Operating Temperature:  
-40 to +85 deg C  
Operating Humidity:  
Storage Temperature:  
0 to 90% (non-condensing.)  
-55 to 100 deg C  
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4. MODEM SPECIFICATIONS  
Modulation:  
Modulation Type:  
Bell202T  
FSK  
Synch/Async:  
Synchronous or Asynchronous  
0 – 1200bps  
Data Rate:  
Transmit Frequency:  
Mark: 1200Hz  
Space: 2200Hz  
Error Correction:  
Data Compression:  
None  
None  
Data Modulation Connectivity:  
Using 16ms Polling Test  
99.999% or better at -37dBm  
99.5% or better at -40dBm  
95% or better at -43dBm  
Serial Formats and Flow Control:  
Synchronous or Asynchronous and RTS/CTS flow control  
Analog Interface  
Tx Output Level:  
Rx Sensitivity:  
-0 dBm or -10 dBm *  
-43dBm or -33dBm *  
-43dBm for constant carrier  
-40dBm for polling carrier  
Dip Switch Selectable *  
600 ohms balanced  
Line Termination:  
Line Impedance:  
2 or 4 Wire Configuration:  
Dip Switch Selectable *  
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Other Features  
Receiver Equalization:  
Self Test Diagnostics:  
Local Analog Loopback:  
Local Digital Loopback:  
Remote Analog Loopback  
Remote Digital Loopback  
Anti-Streaming:  
Compromise Equalization  
None  
See Section 13  
See Section 13  
See Section 13  
See Section 13  
OFF or 45 Seconds (+ 5 sec) *  
1ms, 12ms, 35ms or 50ms (+5%) *  
Note: Soft Carrier will effect  
RTS/CTS delay time (see Dip  
Switch Settings ~ Section 8)  
Switch Selectable ON or OFF  
20ms of 900Hz after RTS is turned  
Off  
RTS/CTS delay:  
Constant Carrier  
Soft Carrier Turn Off  
Carrier Turn ON/OFF  
8ms +0.5ms  
* Dip Switch Selectable ~ See Section 9  
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5. ANALOG LINE SPECIFICATIONS  
The MIU202T contains analog circuitry for connection to the public  
conditioned or unconditioned, Bell type 3002, 2 or 4-wire, full duplex voice  
grade leased lines or metallic lines (eg; pilot wires). The MIU202T will  
also interface to Power Line Carrier or Microwave radio voice channel  
networks.  
The MIU202T has an RJ-11terminated connector. The following lists the  
MIU202T analog interfaces  
Analog Line Type:  
Conditioned or unconditioned, Bell type 3002, 2 or 4-wire, full duplex  
voice grade or metallic lines or better.  
Analog Line Specifications:  
Bandwidth  
Impedance  
Frequency Response  
Receiver Input Level  
Output Level  
300 Hz to 3400 Hz (±3dB)  
600 / 900 ohms , balanced  
400 to 3000Hz (±2dB)  
-16dBm max.  
+7 dBm  
Noise Signal Level  
-48 dBmO  
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6. ANALOG MICROWAVE INTERFACE  
The MIU202Tis designed to interface to a Microwave radio voice channel  
network with the following specifications:  
Phase Jitter (10 to 300Hz)1 degree peak-to-peak, max.  
Frequency Response:  
300 - 3400Hz -3, +0.7 dB  
400 - 3000Hz -1, +0.7 dB  
600 - 2400Hz + 0.7 dB  
Frequency Stability:  
With Synchronization  
0.1 Hz  
Without Synchronization 0.5 Hz / month  
Level Stability (w/o regulation): + 0.5 dB (6 months)  
Harmonic Distortion:  
Absolute Delay:  
1% max, 0.3 % typical  
(1Khz, 0 dBmO test tone)  
Option – 001:  
Option – 002:  
1500 µsec, maximum  
1900 µsec, maximum  
Group Delay (option - 001): 600 - 3200 Hz 1200 µsec, maximum  
800 - 2800 Hz 550 µsec, maximum  
1000-2600 Hz 350 µsec, maximum  
Group Delay (option - 002): 600 - 3200 Hz with 1000 µsec, maximum  
800 - 2800 Hz with 400 µsec, maximum  
1000-2600 Hz with 180 µsec, maximum  
Linearity:  
Limiting:  
0.3 dB +3.5 dBmO  
+7.5dBmO, max (+6.5 dBmO typical)  
for +20dBmO input  
Crosstalk (intelligible)(1KhZ test tone at 0 dBmO):  
Inter-channel  
Intra-channel  
65 dBmO maximum, 80 dBmO typical  
70 dBmO maximum  
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Crosstalk (unintelligible):  
Adjacent channel  
28dBrnc0 maximum (24 455B weighted  
noise at 0 dBmO dBrnc0 typical).  
28 dBrnc0, maximum (18 dBrnc0, typical)  
(1KHz test tone at 0 dBmO)  
Intra-channel  
Out of Band Signalling:  
Frequency 3825 Hz  
Level -20 dBmO  
Pulse speed (30 to 80% break) 8 to 14 pps  
Pulse distortion +3 dB, level var. 3% max.  
Signaling leak -60 dBmO, maximum  
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7. POWER CONNECTIONS  
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8. SERIAL DATA PORT PIN-OUTS  
For Synchronous Mode  
6 TxDClk (was DSR)  
9 RxDClk (was RI)  
15 TxDClk  
17 RxDClkl  
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9. DIP SWITCH FUNCTIONS  
IMPORTANT NOTE: Invert modem to view dip switches as shown above  
Table 1  
Switch  
Function  
ON  
OFF  
Switch 1  
Switch 2  
Switch 3  
Switch 4  
Switch 5  
Switch 6  
Transmit Analog (TxA) Signal Level  
Anti-Streaming  
0 dBm  
45 secs  
-10 dBm  
OFF  
Received Analog (RxA) Signal Level -33 dBm  
-43 dBm  
RTS/CTS Delay  
See Table 2  
See Table 2  
RTS/CTS Delay  
Switched/Constant Carrier  
Constant  
Carrier  
Switched  
Carrier  
(Follows  
RTS State)  
4-Wire  
Switch 7  
Switch 8  
Switch 9  
Switch 10  
2 or 4- Wire Selection  
Line Termination  
Soft Carrier (900Hz) Turn Off  
Spare  
2-Wire  
600 ohms None  
(22k h  
)
ON  
OFF  
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Table 2: RTS/CTS Delay Time  
Switched Constant Switch  
Switch  
5
Switch 9 RTS/CTS  
2
4
Carrier Carrier  
4
Soft  
Carrier  
OFF  
Delay  
Time  
50 ms  
Wire Wire  
NO YES  
YES NO  
NO YES  
YES NO  
YES  
YES  
YES  
YES  
YES  
NO  
NO  
NO  
ON  
ON  
ON  
ON  
ON  
ON  
ON  
ON  
ON  
ON  
OFF  
50 ms  
50 ms  
50 ms  
NO YES  
NO YES  
YES NO  
YES NO  
YES  
YES  
YES  
YES  
YES  
NO  
NO  
NO  
OFF  
OFF  
OFF  
OFF  
ON  
ON  
ON  
ON  
OFF  
ON  
ON  
35 ms  
35 ms  
35 ms  
35 ms  
OFF  
NO YES  
NO YES  
YES NO  
YES NO  
YES  
YES  
YES  
YES  
YES  
NO  
NO  
NO  
ON  
ON  
ON  
ON  
OFF  
OFF  
OFF  
OFF  
OFF  
ON  
ON  
12 ms  
35 ms  
12 ms  
12 ms  
OFF  
NO YES  
NO YES  
NO YES  
YES NO  
YES NO  
NO  
YES  
NO  
NO  
NO  
NO  
OFF  
OFF  
OFF  
OFF  
OFF  
OFF  
OFF  
OFF  
OFF  
OFF  
OFF  
OFF  
ON  
OFF  
ON  
1 ms  
12 ms  
1 ms  
1 ms  
1 ms  
YES  
YES  
YES  
YES  
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10. MODEM CONFIGURATION  
The following table provides the Dip Switch settings required for most  
modem application configurations:  
Dip Switch Setting  
1
2
3
4
5
6
7
8
9
4-Wire  
Point-to-Point  
4-Wire  
ON  
ON  
ON  
ON  
ON  
ON  
ON  
ON  
Multi-Point  
Master  
4-Wire  
Multi-Point  
Slave  
ON ON ON ON  
ON  
Rx Term. OFF  
4-Wire  
Multi-Point  
Slave  
Rx Term. ON  
2-Wire  
Point-to-Point  
2-Wire  
Multi-Point  
Master  
Line Term. ON  
2-Wire  
Multi-Point  
Slave  
Line Term. ON  
2-Wire  
Multi-Point  
Slave  
ON ON ON ON  
ON ON ON ON  
ON ON ON  
ON ON  
ON ON ON  
ON ON ON  
ON  
ON  
ON  
ON ON ON  
ON ON ON  
ON ON ON  
ON  
ON  
Line Term. OFF  
For clarity, a blank space = OFF  
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11. LED INDICATOR  
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12. OUTLINE DRAWING & MOUNTING  
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13. DIAGNOSTICS  
The following pages provide hardware techniques for diagnosing  
communication problems and thereby isolating the problem at the local  
modem, the remote modem or the interconnecting line.  
(a) LOCAL ANALOG LOOPBACK (Figure 2)  
Requires a loop back cable with a built-in circuit for line loss to  
simulate a typical leased line condition (See Figure 3).  
Connect the loop back cable to the RJ11 connector on the modem  
under test.  
Set Dip Switches as follows…  
Switch 7 = OFF  
Switch 9 = ON  
Switch 1 = ON  
Switch 3 = ON  
Switch 6 = OFF  
Switch 4&5 = ON  
4-Wire  
Soft Carrier Turn Off Enabled  
Transmit (TxA) Signal Level = 0dBm  
Receive (RxA) Signal Level = –33dBm  
Switched Carrier  
RTS/CTS Delay = 50ms  
Test 1: RTS/CTS Analog Control  
Set RTS “ON” and check that CD (Carrier Detect) turns  
“ON”.  
Turn RTS “OFF” and ensure that CD turns “OFF”  
With RTS “ON”, run a test message at TxD and verify that  
the same message is received at RxD with no data errors.  
Test 2: Transmit Signal Power & Receive Levels  
Set Dip Switch 1 OFF (TxA = -10dBm)  
CD will be OFF.  
Change Dip Switch 1 to ON (TxA = 0dBm)  
CD should now be ON.  
Test 3: Received Signal Level  
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Set Dip Switch 1 OFF (TxA = -10dBm) and Dip Switch 3  
OFF (RxA = -43dBm).  
CD will be ON.  
Run a test message at TxD and verify that the same message  
is received at RxD with no data errors.  
Test 4: Repeat Test 3 for various RTS/CTS delay times and with  
soft carrier ON and OFF.  
(b) LOCAL DIGITAL LOOPBACK – 4/Wire Network (Figure 4)  
On the modem under test, connect TxD to RxD  
Switch 1 = ON (TxA = 0dBm)  
Switch 3 = ON (RxA = -33dBm)  
Switch 4 = OFF (RTS/CTS = 35ms)  
Switch 5 = ON (RTS/CTS = 35ms)  
Switch 6 = ON (Constant Carrier mode).  
Switch 7 = OFF (4-Wire)  
Switch 8 = ON (Line Termination = 600 ohms)  
Switch 9 = ON (Soft Carrier = ON)  
Transmit a test message from a remote modem and confirm that the  
same message is received back at RxD on the remote modem with no  
data errors.  
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(c) REMOTE DIGITAL LOOPBACK – 4/Wire Network (Figure 5)  
Configure both the local and remote modems as follows:  
Switch 1 = ON (TxA = 0dBm)  
Switch 3 = ON (RxA = -33dBm)  
Switch 4 = OFF (RTS/CTS = 35ms)  
Switch 5 = ON (RTS/CTS = 35ms)  
Switch 6 = ON (Constant Carrier mode).  
Switch 7 = OFF (4-Wire)  
Switch 8 = ON (Line Termination = 600 ohms)  
Switch 9 = ON (Soft Carrier Turn Off = ON)  
Connect TxD to RxD at the remote modem.  
Transmit a test message from the local modem and confirm that the  
same message is received back at RxD on the local modem with no  
data errors.  
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(d) LINE DIAGNOSTICS  
(i) Typical modem configuration for 4-wire Point-to-Point system…  
Switch 1 = ON (TxA = 0dBm)  
Switch 3 = ON (RxA = -33dBm)  
Switch 4 = OFF (RTS/CTS = 1ms)  
Switch 5 = OFF (RTS/CTS = 1ms)  
Switch 6 = ON (Constant Carrier mode).  
Switch 7 = OFF (4-Wire)  
Switch 8 = ON (Line Termination = 600 ohms)  
Switch 9 = OFF (Soft Carrier = OFF)  
(ii) Typical modem configuration for 4-wire Multi-Point system…  
Switch 1 = ON (TxA = 0dBm)  
Switch 3 = ON (RxA = -33dBm)  
Switch 4 = OFF (RTS/CTS = 1ms)  
Switch 5 = OFF (RTS/CTS = 1ms)  
Switch 6 = ON (Constant Carrier mode).  
Switch 7 = OFF (4-Wire)  
Switch 8 = ON (Line Termination = 600 ohms)  
Switch 9 = OFF (Soft Carrier = OFF)  
Adjustments…  
In a network with high line loss (greater than 16dB) change Switch 3  
(RxA) to OFF (-43dBm).  
If there are conditions that can cause cross-talk (TxA leaking into RxA  
path) set Switch 1 (TxA) to OFF (-10dBm).  
Note that noise level should be –50dBm or lower for most FSK  
operation (signal-to-noise ratio of 15dB or higher)  
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NOTES:  
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