®
5020A
Thermo-Hygrometer
Users Manual
December 2003
© 2003 Fluke Corporation, All rights reserved.
All product names are trademarks of their respective companies.
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Table of Contents
Chapter
1
Title
Page
Introduction........................................................................................................ 1-3
Symbols Used .................................................................................................... 1-4
Safety Information............................................................................................. 1-4
Technical Support.............................................................................................. 1-6
Specifications..................................................................................................... 1-7
Environmental Conditions ................................................................................. 1-8
5020A............................................................................................................ 1-8
5026A-H/S..................................................................................................... 1-8
AC Adapter.................................................................................................... 1-8
General to all ................................................................................................. 1-8
2
Quick Start.......................................................................................... 2-1
Introduction........................................................................................................ 2-3
Unpacking.......................................................................................................... 2-3
Use Proper Care................................................................................................. 2-3
Install the Battery............................................................................................... 2-3
Connect the Sensor ............................................................................................ 2-3
Connect the Power Source................................................................................. 2-4
Switch the Power On ......................................................................................... 2-4
Measure Temperature ........................................................................................ 2-4
3
Parts and Controls ............................................................................. 3-1
Introduction........................................................................................................ 3-3
Front Panel......................................................................................................... 3-3
Top Panel........................................................................................................... 3-4
Right Side Panel................................................................................................. 3-4
Left Side Panel................................................................................................... 3-5
Back Panel ......................................................................................................... 3-5
Quick Buttons .................................................................................................... 3-6
Configurations ................................................................................................... 3-6
Accessories ........................................................................................................ 3-6
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5020A
Users Manual
4
Introduction........................................................................................................ 4-3
DC Power Source............................................................................................... 4-3
Battery................................................................................................................ 4-3
Sensor Configuration......................................................................................... 4-4
Power Switch..................................................................................................... 4-4
Power On Self-Test............................................................................................ 4-4
Display Contrast ................................................................................................ 4-4
Display............................................................................................................... 4-4
Alarm Screen ..................................................................................................... 4-4
Measuring .......................................................................................................... 4-4
Unit of Temperature........................................................................................... 4-5
Recording Measurements................................................................................... 4-5
Sensors............................................................................................................... 4-5
5
Menu Functions.................................................................................. 5-1
Introduction........................................................................................................ 5-3
Channel Menu.................................................................................................... 5-3
Channel Setting ............................................................................................. 5-4
Sensor ID....................................................................................................... 5-5
Sensor Lock................................................................................................... 5-6
Sensor Cal...................................................................................................... 5-6
Display Menu..................................................................................................... 5-7
Display Setting .............................................................................................. 5-8
Display Layout .............................................................................................. 5-9
Field Data ...................................................................................................... 5-9
Graph Scale ................................................................................................... 5-11
Display Reset................................................................................................. 5-12
Data Menu.......................................................................................................... 5-13
Data Record................................................................................................... 5-14
Record Setting........................................................................................... 5-14
Data View ................................................................................................. 5-15
Data Print .................................................................................................. 5-17
Data Storage.............................................................................................. 5-17
Data Clear.................................................................................................. 5-18
Daily Stats ..................................................................................................... 5-18
Stats Setting............................................................................................... 5-19
Stats View ................................................................................................. 5-20
Stats Print .................................................................................................. 5-20
Stats Reset................................................................................................. 5-21
Stats Clear ................................................................................................. 5-21
Data Card....................................................................................................... 5-22
File Write .................................................................................................. 5-22
File View................................................................................................... 5-23
Alarm Menu....................................................................................................... 5-24
Alarm Setting................................................................................................. 5-25
Sensor Alarm................................................................................................. 5-26
System Alarm................................................................................................ 5-26
Alarm View ................................................................................................... 5-27
System Menu ..................................................................................................... 5-27
System Setting............................................................................................... 5-28
Date Time...................................................................................................... 5-29
Comm Setting................................................................................................ 5-30
Serial ......................................................................................................... 5-31
ii
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Contents (continued)
IR............................................................................................................... 5-32
Password........................................................................................................ 5-32
System Info.................................................................................................... 5-34
6
Introduction........................................................................................................ 6-3
Communications................................................................................................ 6-3
Serial Wiring ................................................................................................. 6-3
Interface Commands.......................................................................................... 6-4
Command Summary...................................................................................... 6-4
Command Syntax .......................................................................................... 6-4
Commands ......................................................................................................... 6-12
Alarm Commands.......................................................................................... 6-13
Measurement Commands .............................................................................. 6-22
Data Commands ............................................................................................ 6-26
Channel Commands....................................................................................... 6-32
Calibration Commands.................................................................................. 6-33
System Commands ........................................................................................ 6-35
Date and Time Commands ............................................................................ 6-39
Password Commands..................................................................................... 6-41
Status Commands.......................................................................................... 6-44
Port Numbers................................................................................................. 6-52
Date and Time Formats ................................................................................. 6-53
7
8
Introduction........................................................................................................ 7-3
Equipment.......................................................................................................... 7-3
Preparation......................................................................................................... 7-3
Calibration Points .............................................................................................. 7-3
Maintenance....................................................................................................... 8-3
Troubleshooting................................................................................................. 8-3
Missing or Scattered Graph Data................................................................... 8-3
Blank screen .................................................................................................. 8-4
Error message at power up ............................................................................ 8-4
Self-Test Error Messages .............................................................................. 8-4
Start-up Error Messages ................................................................................ 8-5
Downloading Recorded Data............................................................................. 8-5
CE Comments.................................................................................................... 8-6
EMC Directive............................................................................................... 8-6
Immunity Testing...................................................................................... 8-6
Emission Testing....................................................................................... 8-6
Low Voltage Directive (Safety) .................................................................... 8-6
Frequently Asked Questions.............................................................................. 8-6
iii
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5020A
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iv
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List of Tables
Table
Title
Page
5-1. Field Types............................................................................................................. 5-10
5-2. Aproximate Data Storage Capacity........................................................................ 5-15
6-1. Interface Commands .............................................................................................. 6-4
7-1. 5026A-S Temperature Calibration Points.............................................................. 7-3
7-2. 5026A-S Relative Humidity Calibration Points..................................................... 7-3
7-3. 5026A-H Temperature Calibration Points ............................................................. 7-4
7-4. 5026A-H Relative Humidity Calibration Points .................................................... 7-4
8-1. Self-Test Error Messages ....................................................................................... 8-4
v
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Users Manual
vi
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List of Figures
Figure
Title
Page
3-1. Front Panel ............................................................................................................. 3-3
3-2. Top Panel ............................................................................................................... 3-4
3-3. Right and Left Side View....................................................................................... 3-5
3-4. Back Panel.............................................................................................................. 3-6
5-1. Main Display.......................................................................................................... 5-3
5-2. Main Menu............................................................................................................. 5-3
5-3. Channel Menu........................................................................................................ 5-4
5-4. Channel Setting...................................................................................................... 5-5
5-5. Sensor ID................................................................................................................ 5-5
5-6. Sensor Lock............................................................................................................ 5-6
5-7. Sensor Channel Select............................................................................................ 5-7
5-8. Sensor Cal .............................................................................................................. 5-7
5-9. Display Menu......................................................................................................... 5-8
5-10. Display Setting....................................................................................................... 5-8
5-11. Display Layout....................................................................................................... 5-9
5-12. Field Data............................................................................................................... 5-11
5-13. Graph Scale, Select Zone ....................................................................................... 5-12
5-14. Graph Scale............................................................................................................ 5-12
5-15. Display Reset ......................................................................................................... 5-13
5-16. Data Menu.............................................................................................................. 5-13
5-17. Data Record............................................................................................................ 5-14
5-18. Record Setting........................................................................................................ 5-15
5-19. Data View, Begin Time.......................................................................................... 5-16
5-20. Data View, Numeric Format.................................................................................. 5-16
5-21. Data Print ............................................................................................................... 5-17
5-22. Data Storage........................................................................................................... 5-18
5-23. Data Clear............................................................................................................... 5-18
5-24. Daily Stats.............................................................................................................. 5-19
5-25. Stats Setting............................................................................................................ 5-20
5-26. Stats View .............................................................................................................. 5-20
5-27. Stats Print ............................................................................................................... 5-21
5-28. Stats Reset.............................................................................................................. 5-21
5-29. Stats Clear .............................................................................................................. 5-22
5-30. Data Card ............................................................................................................... 5-22
5-31. File Write ............................................................................................................... 5-23
vii
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5020A
Users Manual
5-32. File View................................................................................................................ 5-24
5-33. Alarm...................................................................................................................... 5-25
5-34. Alarm Setting ......................................................................................................... 5-25
5-35. Sensor Alarm.......................................................................................................... 5-26
5-36. System Alarm......................................................................................................... 5-27
5-37. Alarm View............................................................................................................ 5-27
5-38. System Menu.......................................................................................................... 5-28
5-39. System Setting........................................................................................................ 5-28
5-40. Data Time............................................................................................................... 5-29
5-41. Comm Setting......................................................................................................... 5-31
5-42. Serial ...................................................................................................................... 5-31
5-43. IR............................................................................................................................ 5-32
5-44. Password ................................................................................................................ 5-33
5-45. System Info ............................................................................................................ 5-34
6-1. Serial Cable Wiring................................................................................................ 6-3
viii
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Chapter 1
Introduction and Specifications
Title
Page
Introduction........................................................................................................ 1-3
Symbols Used .................................................................................................... 1-4
Safety Information............................................................................................. 1-4
Technical Support.............................................................................................. 1-6
Specifications..................................................................................................... 1-7
Environmental Conditions ................................................................................. 1-8
5020A............................................................................................................ 1-8
5026A-H/S..................................................................................................... 1-8
AC Adapter.................................................................................................... 1-8
General to all ................................................................................................. 1-8
1-1
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1-2
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Introduction and Specifications
Introduction
1
Introduction
This manual contains information necessary safely operate the Fluke 5020A Thermo-
Hygrometer.
The Fluke 5020A is a low-cost, high-accuracy, digital thermo-hygrometer. Its unique
combination of features makes it suitable for a wide variety of applications from
laboratory to industrial ambient measurement. Features of the thermo-hygrometer
include:
•
•
Two channels measure ambient temperature to ±0.125 °C and %RH to ±1.5%
Two sensors, each measuring temperature and relative humidity; each is
detachable, cable-extendable, and interchangeable, with self-contained
calibration; each may be assigned a unique 16-character identification
•
•
•
Display resolution is user selectable up to 0.001 °C and 0.01% RH
On-board memory holds up to 400,000 time/date-stamped readings
Removable data card option for additional data storage and ease of data transfer
to and from a PC.
•
•
•
•
Visual and audio alarms for various alarm or fault conditions
May be wall mounted or set on a bench top
Detachable sensors contain their own calibration data for easy recalibrations
Optional software logs in real-time or shows graphical/statistical data from data
card (Data card is optional and not needed to run the software for real-time
logging.)
•
•
Password protection of settings
Large, monochrome LCD, displays temperature and humidity data graphically,
numerically, and statistically; 16 pre-defined, user-changeable screen setups;
display viewable in bright or dim lighting
•
•
•
Serial RS-232 and IR interface standard
Power 12 VDC from external 110-240 VAC to DC converter.
Uses a standard 9 V battery backup to allow continued measuring during power
interruptions.
•
Certificate of NIST-traceable temperature and humidity calibration with three
each temperature and humidity points
1-3
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5020A
Users Manual
Symbols Used
Table 1-1 lists the International Electrical Symbols. Some or all of these symbols may be
used on the instrument or in this manual.
Table 1-1. International Electrical Symbols
Description
Symbol
B
D
M
P
F
Y
X
I
AC (Alternating Current)
AC-DC
Battery
CE Complies with European Union Directives
DC (Direct Current)
Double Insulated
Electric Shock
Fuse
PE Ground
Hot Surface (Burn Hazard)
Read the User’s Manual (Important Information)
Off
On
Canadian Standards Association
)
CAT
OVERVOLTAGE (Installation) CATEGORY II, Pollution
Degree 2 per IEC1010-1 refers to the level of Impulse
Withstand Voltage protection provided. Equipment of
OVERVOLTAGE CATEGORY II is energy-consuming
equipment to be supplied from the fixed installation. Examples
include household, office, and laboratory appliances.
C-TIC Australian EMC Mark
;
Safety Information
Use this instrument only as specified in this manual. Otherwise, the protection provided
by the instrument may be impaired.
The following definitions apply to the terms “Warning” and “Caution”.
•
•
“Warning” identifies conditions and actions that may pose hazards to the user.
“Caution” identifies conditions and actions that may damage the instrument
being used.
Warnings
To avoid personal injury, follow these guidelines.
•
DO NOT use this unit in environments other than those
listed in the User's Manual.
•
•
Follow all safety guidelines listed in the User's Manual.
Calibration equipment should only be used by trained
personnel.
1-4
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Introduction and Specifications
Safety Information
1
•
The AC adapter can present safety concerns if misused
or damaged. To avoid the risk of electric shock or fire,
do not use the AC adapter outdoors or in a dusty, dirty,
or wet environment. If the cord, case, or plug of the
adapter is damaged in any way, discontinue its use
immediately and have it replaced.
•
•
Never disassemble the AC adapter. Use only the AC
adapter provided with the instrument or equivalent
adapter recommended by the manufacturer of this
instrument.
The AC adapter has circuits with high voltage inside that
could present danger of electrical shock or fire if
exposed. If the AC adapter is damaged in any way or
becomes hot, discontinue its use immediately,
disconnect it from any AC supply, and have it replaced.
Do not attempt to open, repair, or continue using a
damaged or defective AC adapter.
•
The instrument battery can present danger if not handled
properly. To avoid the risk of exposure to dangerous
substances or explosion, immediately remove the
battery and discontinue use if it leaks or becomes
damaged. Never allow the battery to be shorted, heated,
punctured, or dropped. If the instrument is physically
damaged, immediately remove the battery to insure that
it does not become shorted. While removed from the
instrument, store the battery in a location so that it will
not come into contact with metal or fluids that might
short circuit the battery and where it is safe from
excessive temperatures.
•
Used batteries must be disposed of properly. Check your
local regulations for additional information. Never
dispose of batteries in fire which may result in explosion
with the possibility of personal injury or property
damage.
Cautions
•
If the instrument is dropped, struck, or handled in a way
that causes internal or external physical damage,
immediately unplug the AC adapter, remove the battery,
discontinue use, and contact an Authorized Service
Center. Do not attempt to disassemble or repair the
instrument, battery, or AC adapter. Refer repairs or
replacement components to an Authorized Service
Center.
•
The instrument and sensors are sensitive and can be
easily damaged. Always handle these devices with care.
DO NOT allow them to be dropped, struck, stressed, or
overheated.
1-5
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5020A
Users Manual
•
Sensors are fragile devices which can be damaged by
mechanical shock, overheating, and exposure to fluids.
Damage may not be visibly apparent but can cause drift,
instability, and loss of accuracy. Observe the following
precautions:
•
•
•
DO NOT allow sensors to be dropped, struck, or
stressed.
DO NOT overheat sensors beyond their recommended
temperature range.
Keep the sensors clean and away from fluids and dust.
Technical Support
Contact Fluke if you need technical support. When calling, please have the following
information ready:
•
•
•
•
Model: 5020A
Serial Number
Voltage
Complete description of the problem
To call, using one of the following phone numbers:
USA: 1-888-99-FLUKE
Canada: 1-800-36-FLUKE
Europe: +31 402-675-200
Japan: +81-3-3434-0181
Singapore: +65-738-5655
Anywhere in the world: +1-425-446-5500
1-6
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Introduction and Specifications
Specifications
1
Specifications
Temperature Range
0 °C to 50 °C
Temperature Accuracy
(“H” Model)
16 °C to 24 °C: ±0.125 °C (calibrated)
0 °C to 16 °C, 24 °C to 50 °C: ±0.5 °C (uncalibrated
typical)
Temperature Accuracy
(“S” Model)
15 °C to 35 °C: ±0.25 °C (calibrated)
0 °C to 15 °C, 35 °C to 50 °C: ±0.5 °C (uncalibrated
typical)
Delta Temperature Accuracy
Temperature Display Resolution
RH Range
±0.025 °C for ±1 °C changes within 15 °C to 35 °C
User selectable up to 0.001 °C (0.0 1°C recorded)
0% to 100% RH
RH Accuracy
(“H” Model)
20% to 70% RH: ±1.5% RH (calibrated)
0% to 20% RH, 70% to 100% RH: ±3% RH
(uncalibrated, typical)
RH Accuracy
(“S” Model)
20% to 70% RH: ±2% RH (calibrated)
0% to 20% RH, 70% to 100% RH: ±3% RH
(uncalibrated, typical)
Delta Humidity Accuracy
RH Display Resolution
Inputs
±1.0% for ±5% changes within 20% to 70% RH
User selectable up to 0.01% (0.1% recorded)
Two sensors, each measuring temperature and relative
humidity; each is detachable, cable-extendable, and
interchangeable, with self-contained calibration; each
may be assigned a unique 16-character identification
Display
240 x 128 graphics monochrome LCD, displays
temperature and humidity data graphically, numerically,
and statistically; 16 pre-defined, user-changeable screen
set-ups are included
Memory
Alarms
400,000 typical individual time-stamped readings
(excluding data card storage)
Visual and audio alarms for temperature, temperature
rate, RH, RH rate, and fault conditions
Communications
RS-232 and IR
Data Card Interface
Removable data card for transferring data to a computer;
data can likewise be uploaded from a data card into the
5020A for graphical and statistical display
Enclosure
The 5020A may be wall-mounted (hardware included) or
set on a benchtop
Power
12 V DC from external 100-240 VAC power supply
Battery Backup
Standard 9V battery to allow continued measuring during
power disruptions
Operating Range
0 °C to 50 °C
1-7
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5020A
Users Manual
Size (5020A)
125 mm Hx 211 mm W x 51 mm D(4.9 in x 8.3 in x 2.0
in)
Size (Probes)
Weight
79 mm H x 19 mm dia. (3.1 in H x 0.75 in)
0.7 kg (1.5 lb.)
Calibration
Certificate of NIST-traceable temperature and humidity
calibration included; supplied data includes three each
temperature and humidity points
Environmental Conditions
Although the instrument has been designed for optimum durability and trouble-free
operation, it must be handled with care. The instrument should not be operated in an
excessively dusty, dirty, or wet environment. Maintenance and cleaning
recommendations can be found in the Maintenance section of this manual.
For full accuracy, operate the instrument within the calibrated temperature and relative
humidity range of the sensors.
5020A
Operating Temperature: 0 °C to 50 °C (32°F to 122°F)
Relative Humidity: 0% to 70% RH
5026A-H/S
Operating Temperature: 0 °C to 50 °C (32°F to 122°F)
Relative Humidity: 0% to 100% RH
AC Adapter
Operating Temperature: 0 °C to 40 °C (32°F to 104°F)
Relative Humidity: 5% to 90% non-condensing de-rating from 40 °C linearly to 50% at
70 °C
General to all
Pressure: 75 kPa-106 kPa
Vibration should be minimized
Altitude less than 2,000 meters
Indoor use only
1-8
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Chapter 2
Quick Start
Title
Page
Introduction........................................................................................................ 2-3
Unpacking.......................................................................................................... 2-3
Use Proper Care................................................................................................. 2-3
Install the Battery............................................................................................... 2-3
Connect the Sensor ............................................................................................ 2-3
Connect the Power Source................................................................................. 2-4
Switch the Power On ......................................................................................... 2-4
Measure Temperature ........................................................................................ 2-4
2-1
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Quick Start
Introduction
2
Introduction
This section briefly explains the basics of setting up and operating your thermo-
hygrometer.
Unpacking
Carefully unpack the thermo-hygrometer and inspect the instrument to make sure all
components are present and in satisfactory condition. Verify that the following items are
present:
•
•
•
•
•
•
•
•
•
5020A Thermo-Hygrometer
AC adapter and power cord
Serial cable
Getting Started Manual
CD-ROM with complete Users Manual
Report of calibration
Wall mount bracket
Sensor
9V battery
If all items are not present, call your Fluke Authorized Service Center.
Use Proper Care
First and most important is to understand the safety issues related to the thermo-
hygrometer. Carefully read Safety Information.
The thermo-hygrometer and sensors used with it are sensitive instruments that can be
easily damaged. Always handle these devices with care. DO NOT allow them to be
dropped, struck, stressed, or over-heated.
Learn About the Features and Components
Familiarize yourself with the features and accessories of the thermo-hygrometer by
reading Parts and Controls.
Install the Battery
To maintain uninterrupted measurement when power outages occur, you must install the
included battery into the rear battery compartment. A standard 9V alkaline battery
(NEDA 1604A or IEC 6LR61) is recommended. With a fresh alkaline battery installed,
the thermo-hygrometer will continue to measure and record temperature and relative
humidity during a power outage for up to 16 hours, typically. However, without external
power, the display will be inoperable.
Connect the Sensor
The sensor for channel 1 connects to the socket at the top-right, and the sensor for
channel 2, if used, connects to the socket on the right side. Either sensor may be used
with an optional extension cable up to 100 feet (30 meters) in length.
2-3
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Connect the Power Source
The thermo-hygrometer draws power from the provided power adapter. Plug the adapter
into a wall outlet of the appropriate voltage and insert the DC plug into the DC power
input of the thermo-hygrometer.
Switch the Power On
Power is turned on and off with the power switch located below the stand on the back
panel. To switch the power on, toggle the power switch to the position. To switch power
off, toggle the power switch to the position. The instrument takes a few seconds to
power up, initialize, and begin normal operation. A self-test is performed, displaying the
channel configuration and status of the system, calibration, % battery power, memory,
and buttons. If the thermo-hygrometer calibration has expired and the alert message is
enabled, the user is notified and must press the E button to continue initialization. If an
error message is displayed on power up see Troubleshooting.
Measure Temperature
After initialization, the temperature and relative humidity measurements for the enabled
channels are displayed. If recording is enabled, the measurements will be automatically
stored in memory. The display can be configured to display the measurements in a
variety of numerical and graphical formats. For information on the various modes of
operation of the thermo-hygrometer, see Menu Functions.
2-4
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Chapter 3
Parts and Controls
Title
Page
Introduction........................................................................................................ 3-3
Front Panel......................................................................................................... 3-3
Top Panel........................................................................................................... 3-4
Right Side Panel................................................................................................. 3-4
Left Side Panel................................................................................................... 3-5
Back Panel ......................................................................................................... 3-5
Quick Buttons .................................................................................................... 3-6
Configurations ................................................................................................... 3-6
Accessories ........................................................................................................ 3-6
3-1
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Parts and Controls
Introduction
3
Introduction
The functions of the various features of the thermo-hygrometer are described below.
Front Panel
The front panel buttons E, A, D, B, C and F are used to select and alter the
functions of the thermo-hygrometer (see Figure 3-1).
avu052.tif
Figure 3-1. Front Panel
The buttons have different functions depending on whether the main screen or the menu
system is displayed.
The functions of each of the buttons from the main screen are as follows:
E - This button is used to display the menu options.
F - This button is used to display the alarm window. With the alarm window displayed
the Exit button can be used to return to the main screen while preserving the alarm events
or the Enter button can be used to clear the alarm events and return to the main screen.
B C - These buttons are used to move among enabled display layouts.
A D- These buttons are used to adjust the display contrast, A for darker and D for
lighter.
The functions of each of the buttons within the menu system are as follows:
E - This button is used to select a menu item, to accept a choice, or save changes to a
parameter.
F - This button is used to return from a menu or window or cancel changes to a
parameter. Pressing the Exit button for a second or so returns from most any menu, menu
function, or window back to the main screen.
A D - These buttons are used to move among menu items or parameters. When editing
some numeric or alpha-numeric parameters, these buttons are used to change a digit or
character.
3-3
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5020A
Users Manual
B C - These buttons are used to change a value or option when editing a parameter. When
editing some numeric or alpha-numeric parameters, these buttons are used to move
among digits or characters.
IR Port - The infrared window provides a means for communicating with the thermo-
hygrometer using infrared serial communications (IR COMM mode) or printing
measurements and daily statistics to a IrDA-compatible printer (IRDA mode).
Top Panel
The top panel contains the port for attaching the sensor for Channel 1. An optional
extension cable may be used to allow the sensor to be placed in a remote location (see
Figure 3-2).
avu053.tif
Figure 3-2. Top Panel
Right Side Panel
The right side panel contains the port for attaching the sensor for Channel 2. An optional
extension cable may be used to allow the sensor to be placed in a remote location (see
Figure 3-3).
3-4
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Parts and Controls
Left Side Panel
3
avu054.tif
Figure 3-3. Right and Left Side View
Left Side Panel
The left side panel consists of the DC power socket, the RS-232 port and the data card
slot.
12 V DC Power Socket - The DC plug of the AC adapter plugs into the 12V DC
power socket to power the instrument.
RS-232 Port Connector - This socket is for interfacing the thermo-hygrometer to a
computer or terminal using serial RS-232 communications.
Data Card Slot - An optional data card is installed in this slot for additional memory
storage and data transfer with a computer.
Back Panel
The back panel contains the stand, power switch, battery compartment, and product
information, including serial number (see Figure 3-4).
Stand - The stand can be used to prop up the thermo-hygrometer on a flat surface.
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Battery Compartment - The battery compartment holds a 9V alkaline battery used as
a backup power source to maintain continuous measurement during a power outage.
Power Switch - The power switch turns the power on and off to the thermo-
hygrometer, including power from the battery. Before disconnecting the AC adapter from
the instrument, switch the power off to prevent draining the backup battery.
Serial Label - The serial label shows the instrument model and serial number.
avu055.tif
Figure 3-4. Back Panel
Quick Buttons
When the main screen is displayed, the buttons have the following functions:
E- This button is used to display the menu options.
F- This button is used to display the alarm window. With the alarm window displayed
the Exit button can be used to return to the main screen while preserving the alarm events
or the Enter button can be used to clear the alarm events and return to the main screen.
B C - These buttons are used to move among enabled display layouts.
A D - These buttons are used to adjust the display contrast, A for darker and D for
lighter.
Configurations
•
Model 5020A-H KIT includes a 5020A-H Thermo-Hygrometer readout, a high
accuracy sensor (Model 5026A-H), a thermo-hygrometer readout wall mount bracket,
power supply (Model 5020A-PS), and an RS-232 cable.
•
Model 5020A-S KIT includes a 5020A-S Thermo-Hygrometer readout, a standard
accuracy sensor (Model 5026A-S), a thermo-hygrometer readout wall mount bracket,
power supply (Model 5020A-PS), and an RS-232 cable.
Accessories
The following accessories are available to compliment either the high accuracy or
standard thermo-hygrometer readout.
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Parts and Controls
Accessories
3
•
•
Model 5026A-S Spare Sensor/Standard Accuracy
Model 5027A-S Spare Sensor Kit includes a standard accuracy probe (Model 5026A-
S), sensor case (Model 5026A-CASE), sensor wall mount bracket (Model 5030A-
MNT), and 25-foot (7.6 m) extension cable (Model Y5028)
•
•
Model 5026A-H Spare Sensor/High Accuracy
Model 5027A-H Spare sensor Kit includes a high accuracy sensor (Model 5026A-H),
sensor case (Model 5026A-CASE), sensor wall mount bracket (Model 5030A-MNT),
and 25-foot (7.6 m) extension cable (Model Y5028)
•
•
•
•
•
•
Model 5026A Spare Sensor Protective Case
Model Y5028 Extension cable, 25-foot (7.6 m)
Model Y5029 Extension cable, 50-foot (15.2 m)
Model 5030A-MNT Sensor wall mount bracket
Model 5032A-64MB data card (PC Card), 64 MB
Model 5020A-CASE Protective Case (includes space for a 5020A Thermo-
Hygrometer, two sensors, RS-232 cable, and power cord)
•
•
•
Model 5020A-PS Spare Power Supply, 100-240 VAC to 12 VDC
Model 5020A-LW3 LogWare III, single-PC license
Model 5020A-LWLIC LogWare III, license (for additional PCs)
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Chapter 4
General Operation
Title
Page
Introduction........................................................................................................ 4-3
DC Power Source............................................................................................... 4-3
Battery................................................................................................................ 4-3
Sensor Configuration......................................................................................... 4-4
Power Switch..................................................................................................... 4-4
Power On Self-Test............................................................................................ 4-4
Display Contrast ................................................................................................ 4-4
Display............................................................................................................... 4-4
Alarm Screen ..................................................................................................... 4-4
Measuring .......................................................................................................... 4-4
Unit of Temperature........................................................................................... 4-5
Recording Measurements................................................................................... 4-5
Sensors............................................................................................................... 4-5
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General Operation
Introduction
4
Introduction
This section explains basic operation of the thermo-hygrometer. Detailed operation of the
thermo-hygrometer is explained in Chapters 5 and 6. Chapter 5 explains the menu
structure and the functions available in the menu structure and Chapter 6 explains the
communications interface for operating the thermo-hygrometer remotely.
DC Power Source
The thermo-hygrometer requires 12V DC to operate. The AC adapter is provided to
produce the DC power from an AC mains supply.
Caution
For CE compliance and for proper performance, use only the
AC adapter shipped with the instrument. If the AC adapter
needs to be replaced, contact an Authorized Service Center.
The AC adapter has circuits with high voltages inside that could
present danger of electric shock or fire if exposed. If the AC
adapter is damaged in any way or becomes hot, discontinue
use immediately, disconnect the adapter from any AC supply,
and replace the adapter. Do not attempt to open, repair, or
continue using a damaged or defective AC adapter.
The DC output from the AC adapter plugs into the 12 V DC power input on the left side
of the instrument (see Figure 3-3).
Battery
The thermo-hygrometer uses a 9V battery to maintain continuous measurement and
recording during power outages. The recommended battery type is a standard 9V alkaline
battery (NEDA 1604A or IEC 6LR61). During a power outage, or when the AC adapter
is disconnected, the display will be inoperable but measuring will continue if the 9V
battery is installed. If the alarm is enabled, the beeper will sound periodically to alert the
user of the loss of external power. With a fresh alkaline battery, measuring will continue
during a power outage for typically about 16 hours. During normal operation, the battery
charge is regularly checked, and if the low battery alarm is enabled, the user will be
alerted when the battery charge drops below approximately 50%. The battery charge
level can be viewed with a display layout that includes a stat type zone with one of the
fields set to BATT. To prevent inadvertent battery drain, remember to switch the power
switch off when external power is disconnected and the thermo-hygrometer is not in use.
To install or replace the battery, follow these steps:
1. Switch the power off and unplug the DC power cord.
2. Turn the thermo-hygrometer over to access the rear battery compartment. Press
down slightly on the battery cover and slide it out to remove it.
3. Remove the old battery if one is in place by lifting it up at the bottom and pulling
it out.
4. Slide the new battery in at an angle, observing the proper polarity so the
terminals mate correctly, then press the bottom of the battery down into the
holder.
5. Replace the battery cover.
6. Replace the DC power cord and switch the power on.
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Used batteries must be disposed of properly. See Warnings at the beginning of this
manual.
Sensor Configuration
The thermo-hygrometer can be used with one or two sensors of either type attached at
either of the two ports. Extension cables can be used with the sensors to allow the sensors
to be placed at remote locations. The extension cables can be up to 30m (100 ft.) in
length. When a sensor is attached, the thermo-hygrometer detects the sensor
automatically, reads its calibration parameters, and begins to measure if the channel is
enabled (see Measuring).
Power Switch
To operate the thermo-hygrometer, slide the rear power switch to the ON ( ) position.
When the thermo-hygrometer is not being used, slide the power switch to the OFF (
position before disconnecting the power source to preserve the battery.
)
Power On Self-Test
When power is turned on, the thermo-hygrometer performs a self-test, checking the
system, sensors, sensor calibration parameters, memory, and buttons. If an error occurs,
an error message is displayed. See Troubleshooting for additional information on error
messages.
Display Contrast
If the display appears too dark or too light, you can use the A and D buttons at the main
screen to adjust the contrast. The contrast can also be adjusted from the DISPLAY
SETTING menu (see Display Setting).
Display
The thermo-hygrometer display is originally configured with six default display layouts
enabled. The user can enable and configure any of the 16 display layouts to show a
variety of data in numerical or graphical format (see Display Layout). Enabled display
layouts can be quickly selected from the main screen using the B and C buttons.
Alarm Screen
The Alarm Screen can be accessed from the main screen by pressing Exit or by entering
the Alarm Menu (see Alarm Menu). If enabled, the alarm screen will appear
automatically when an alarm event occurs. When an alarm is displayed the event can be
either hidden by pressing Exit or cleared by pressing Enter.
Measuring
The thermo-hygrometer will automatically make measurements on enabled channels at
the set period when a sensor is attached. Channels are enabled using the CHANNEL
SETTING function in the CHANNEL menu (see Record Setting). The measurement
period is also set with this function.
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General Operation
Unit of Temperature
4
Unit of Temperature
The thermo-hygrometer is capable of displaying temperature in Celsius (C) or Fahrenheit
(F). The unit of temperature applies to temperature measurements on either channel that
are displayed, recorded, or printed. Recorded data is viewed, printed, or written to a data
card file with the currently set unit of temperature. The unit of temperature is set using
the DISPLAY SETTING function in the DISPLAY menu (see Display Setting) or the
SYSTEM SETTING function in the SYSTEM menu (see System Setting).
Recording Measurements
The thermo-hygrometer will automatically record measurements on enabled channels at
the set period. Recording is enabled using the RECORD SETTING function in the
DATA RECORD sub-menu in the DATA menu (see Record Setting). The record period
is also set with this function.
Sensors
The standard-accuracy sensor and high-accuracy sensor are used to measure temperature
and relative humidity. The sensors attach to the thermo-hygrometer by plugging into the
top or side panel of the instrument.
The sensor contains a memory device that stores information about the sensor and
automatically transfers this data to the thermo-hygrometer when the sensor is attached.
This ensures that the settings used to measure and calculate temperature and humidity
always match the sensor being used.
Caution
Sensors are fragile devices that can be easily damaged by
mechanical shock, overheating, and exposure to fluids or dust.
Damage may not be visibly apparent but nevertheless can
cause drift, instability, and loss of accuracy. Observe the
following precautions:
•
•
•
•
DO NOT allow sensors to be dropped, struck, or
stressed.
DO NOT overheat sensors beyond their recommended
temperature range.
DO NOT expose sensors to harmful vapors, fumes, dust,
or condensation.
DO NOT allow sensors to come into direct contact with
any fluids.
Sensor Accuracy
To achieve full accuracy with the thermo-hygrometer sensors, a few precautions should
be noted.
First, consider that the sensor actually measures its own temperature, not necessarily the
temperature of the air around it. Ideally, the sensor's temperature will be the same as the
air, but they might be different under less than ideal conditions.
One such condition is when there is a source of radiated heat that is "seen" by the sensor.
Radiated heat tends to heat up the sensor higher than the air around it (try shining a
flashlight on the sensor from some distance away). Some sources of radiated heat to
avoid are incandescent lamps, space heaters, and other high-temperature devices. If such
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objects cannot be eliminated, consider using a heat shield between the heat source and the
thermo-hygrometer sensor.
The sensor can also be heated by warm objects close by, perhaps a wall that is slightly
warmer than the air in the room or even another sensor placed next to it. For best results,
allow adequate distance between the sensor and any objects that might be at a different
temperature than the air.
Other considerations relate to the self-heating of the sensor. Since the sensor contains
electronic circuits that release a small amount of heat, the sensor will naturally be slightly
warmer than the air around it. The calibration of the sensor takes this self-heating into
account and compensates for it. But, factors that alter the natural self-heating can cause
errors in the measurement.
Self-heating does depend somewhat on the velocity of the air around the sensor. The
sensor is calibrated in nearly still air. Different air velocities can cause differences in the
measured temperature of the sensor: as much as ±0.06 °C for velocities ranging from 0 to
10 cm/s. High velocities can cause even greater errors that can be as large as 0.15 °C
below the temperature measured at low velocities. Thus, it is recommended that the
sensor be located where there is minimal air currents.
The self-heating of the sensor could also be altered by nearby objects that insulate the
sensor from the air. Keep adequate air space around the sensor.
The self-heating of the sensor takes a few minutes to stabilize after the power to the
thermo-hygrometer is switched on or the sensor is attached. For best results, allow 15
minutes for the sensor to settle after applying power.
The sensor takes some time to respond to large changes in temperature or humidity, such
as, for instance, when the sensor is brought from a cold or humid location to a warm or
dry one. Depending on the difference, the sensor can take several minutes to more than
an hour to reach full accuracy after conditions have changed.
Finally, moisture condensing within the sensor can cause erroneous or invalid
measurements. Condensation can occur if the sensor is brought from a warm, high-
humidity environment to a colder temperature. This can be avoided by first moving the
sensor into low-humidity air at the same temperature for about 30 minutes before it is
placed at the lower temperature. If condensation does occur, the sensor should recover
once it dries out. This may take several hours.
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Chapter 5
Menu Functions
Title
Page
Introduction........................................................................................................ 5-3
Channel Menu.................................................................................................... 5-3
Channel Setting ............................................................................................. 5-4
Sensor ID....................................................................................................... 5-5
Sensor Lock................................................................................................... 5-6
Sensor Cal...................................................................................................... 5-6
Display Menu..................................................................................................... 5-7
Display Setting .............................................................................................. 5-8
Display Layout .............................................................................................. 5-9
Field Data ...................................................................................................... 5-9
Graph Scale ................................................................................................... 5-11
Display Reset................................................................................................. 5-12
Data Menu.......................................................................................................... 5-13
Data Record................................................................................................... 5-14
Record Setting........................................................................................... 5-14
Data View ................................................................................................. 5-15
Data Print .................................................................................................. 5-17
Data Storage.............................................................................................. 5-17
Data Clear.................................................................................................. 5-18
Daily Stats ..................................................................................................... 5-18
Stats Setting............................................................................................... 5-19
Stats View ................................................................................................. 5-20
Stats Print .................................................................................................. 5-20
Stats Reset................................................................................................. 5-21
Stats Clear ................................................................................................. 5-21
Data Card....................................................................................................... 5-22
File Write .................................................................................................. 5-22
File View................................................................................................... 5-23
Alarm Menu....................................................................................................... 5-24
Alarm Setting................................................................................................. 5-25
Sensor Alarm................................................................................................. 5-26
System Alarm................................................................................................ 5-26
Alarm View ................................................................................................... 5-27
System Menu ..................................................................................................... 5-27
System Setting............................................................................................... 5-28
Date Time...................................................................................................... 5-29
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Comm Setting................................................................................................ 5-30
Serial ......................................................................................................... 5-31
IR............................................................................................................... 5-32
Password........................................................................................................ 5-32
System Info.................................................................................................... 5-34
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Menu Functions
Introduction
5
Introduction
Select the E button from the front panel to access the main menu of the thermo-
hygrometer. The main menu consists of the submenus: CHANNEL, DISPLAY, DATA,
ALARM, and SYSTEM. Most of the menu options may be password-protected to
prevent them from being changed.
avu001.jpg
Figure 5-1. Main Display
Each submenu has its own set of functions. The E button is used to select and execute
menu choices. The A D buttons are used to scroll through the functions. The F button
is used to return from a function to the previous menu. The F button may be pressed
and held to quickly return to the main screen.
avu003.jpg
Figure 5-2. Main Menu
Channel Menu
The CHANNEL menu provides functions for selecting the channel, setting the sensor
identification, setting the sensor lock, and setting the sensor calibration. The functions
that appear in the CHANNEL menu are CHANNEL SETTING, SENSOR ID, SENSOR
LOCK, and SENSOR CAL.
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avu004.jpg
Figure 5-3. Channel Menu
Channel Setting
The CHANNEL SETTING function allows you to turn the channels on or off, set the
measurement period, turn averaging on or off, and set the time over which the rate of
change is calculated for measurements.
These settings may be password-protected to prevent them from being changed. The
channels are turned on or off by selecting the channel and then the ON or OFF setting
using the B C buttons.
MEA PER, measurement period, is the time interval at which the measurements are
updated on the display. You may select between 1, 2, 5, 10, 15, and 30 seconds, 1, 2, 5,
10, 15, 20, and 30 minutes, or 1 hour for the measurement period. AVERAGE may be
turned to ON or OFF. When average is on, the temperature and humidity values
displayed are averaged over the measurement period. When average is off, the displayed
values are instantaneous measurements.
RATE T, rate time, determines the time interval over which the measurements are used to
calculate the rate of change, and is selectable between 30 seconds, 1, 2, 5, 10, 15, 20, 30,
45 minutes, or 1 hour. The temperature rate is displayed in the RATE T field of a STATS
display zone. The humidity rate is displayed in the RATE H field of a STATS display
zone. If RATE T is 5 minutes or less, the rate of change is calculated as the average rate
of change using all the measurements obtained during the past RATE T time. If RATE T
is greater than 5 minutes, the rate of change is calculated using the most recent
measurement and the measurement obtained RATE T time ago. If there are as yet
insufficient measurements to calculate the rate of change, only dots are displayed in the
RATE T or RATE H field.
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Menu Functions
Channel Menu
5
avu005.jpg
Figure 5-4. Channel Setting
Use the A D buttons to select the setting to change. The B C buttons are used to change
the setting parameters. Press the E button to save the new setting. Press the F button
to cancel any changes and exit to the menu.
Sensor ID
The SENSOR ID function allows each sensor to be uniquely identified. This may be
password-protected to prevent it from being changed. The model number and serial
number are displayed here but cannot be edited. The sensor ID cannot be set for a
channel without a sensor attached. The sensor ID is stored in the sensor, not in the
thermo-hygrometer.
avu006.jpg
Figure 5-5. Sensor ID
Use the B C and E buttons to select the sensor identification to change. The B C
buttons are used to move among character positions and the A D buttons are used to
change the character. Letters, numeric digits, space and underscore can be used. Press the
E button to save the setting. Press the Fbutton to cancel any changes and exit to the
menu.
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Sensor Lock
The SENSOR LOCK function locks each sensor individually and prohibits the user from
switching sensors on the locked channels. This may be password-protected. The sensor
lock is set to ON or OFF. After selecting ON, a screen is displayed showing the sensor
channel number, serial number, and the message ‘NOW LOCKED’. When the sensor
lock is ON, the thermo-hygrometer measures only on that channel using the sensor that
was attached when sensor lock was set ON. This can be used to prevent inadvertent
attachment of an uncalibrated sensor or one that is not in the desired location. It uses the
sensor serial number to identify the sensor. To exchange a different sensor, the sensor
lock must be set to OFF.
avu007.jpg
Figure 5-6. Sensor Lock
Use the A D buttons to select the sensor to lock. The B C buttons are used to select ON
or OFF. Press the E button to save the setting and exit. Press the F button to cancel
any changes and exit to the menu.
Sensor Cal
The SENSOR CAL function allows the sensor parameters to be edited. This function is
always password-protected. If an incorrect password or no password is entered, the
parameters are displayed but cannot be edited. If a correct password is entered, the
channel, sensor model, sensor serial number, and sensor ID are displayed. Select the
sensor channel of the parameters to edit and then select the E button. The sensor
parameters are displayed for editing.
Caution
The sensor calibration parameters are critical to the accuracy of
the sensor. Do not change them.
The B C buttons are used to select a channel. Press the E button to save the setting and
exit. Press the F button to cancel any changes and exit to the menu.
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Menu Functions
Display Menu
5
avu009.jpg
Figure 5-7. Sensor Channel Select
The B C buttons are used to edit the parameter value. The A D buttons are used to move
between parameters. Press the E button after all of the parameters have been edited.
The message ‘STORE VALUES’ is displayed. Press the E button to save the new
settings. The values are stored in the sensor. Press the F button to cancel any changes
and exit to the menu.
avu008.jpg
Figure 5-8. Sensor Cal
Display Menu
The DISPLAY menu provides functions for configuring the display. The functions that
appear in this menu are DISPLAY SETTING, DISPLAY LAYOUT, FIELD DATA,
GRAPH SCALE, and DISPLAY RESET.
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avu010.jpg
Figure 5-9. Display Menu
Display Setting
The DISPLAY SETTING function allows you to select the temperature display
resolution (T RES), humidity display resolution (H RES), decimal preference, unit of
temperature and display contrast. These settings may be password-protected.
The temperature and humidity display resolutions are selectable between 0, 0.1, 0.01, and
0.001. These settings do not afect the resolution of recorded or printed data. Recorded
and printed data are fixed at 0.01°C or °F and 0.1% RH.
The decimal preference is selectable between a period (.) and a comma (,).
The available units of measure are degrees C and degrees F.
The contrast can be adjusted here using the B C buttons. Setting the adjustment number
more negative lightens the screen and setting it more positive darkens the screen. The
contrast may also be adjusted from the main screen by using the A D buttons.
avu011.jpg
Figure 5-10. Display Setting
The B C buttons are used to select the parameter setting. The A D buttons are used to
scroll between each parameter. Press the E button to change and save the new settings.
Press the F button to cancel any changes and exit to the menu.
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Menu Functions
Display Menu
5
Display Layout
The DISPLAY LAYOUT function allows you configure any of the 16 different display
layouts. These settings may be password-protected. A display layout can be enabled or
disabled by choosing ON or OFF. ON allows the display to be selected from the main
screen using the B C buttons. The number of zones is selectable from 1 to 4. Each zone
can display one of the following zone types: blank screen, time, stats, temperature and
humidity numerically, or temperature and humidity graphically. Once the number of
zones is selected, you can select what is to be displayed in each zone.
The B C buttons are used to select the parameter setting. The A D buttons are used to
move between each parameter. Press the E button to change and save the new settings.
Press the F button to cancel any changes and exit to the menu.
The enabled layouts can be viewed by pressing the B C buttons when the main screen is
displayed.
avu012.jpg
Figure 5-11. Display Layout
Field Data
The FIELD DATA function allows you to select a type of statistic for any of the fields in
a STAT type zone. This may be password-protected. Select the display layout on which
to adjust the statistics field type and then select the zone to adjust. This function can only
be used with display layouts that contain STATS zones. There are eight fields per zone.
Any field can be set to the following field types: DATE, TIME, ID, SERN, TEMP, T
RATE, T AVE, T STD, T MIN, T MAX, T SPR, T N, T RMAX, T ALAR, T DELT,
RHUM, H RATE, H AVE, H STD, H MIN, H MAX, H SPR, H N, H RMAX, H ALAR,
H DELT, DEWP, HEAT, REC CH, BATT, MEAS, or BLANK. See Table 5-1 for a
definition of each of these parameters.
Statistics fields show running statistics of the measurements taken since the last statistics
reset. The statistics are reset automatically after power up, when the STATS RESET
function is used or when the time reaches the RESTIM hour and AUT RES is enabled for
the DAILY STATS.
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Table 5-1. Field Types
Description
Field Type
Blank
DATE
TIME
ID
blank field
current date
current time
sensor identification
sensor serial number
SERN
TEMP
most recent temperature measurement
temperature rate of change
T RATE
T AVE
T STD
T MIN
T MAX
T SPR
temperature statistical mean
temperature standard deviation
minimum temperature
maximum temperature
temperature spread (maximum minus minimum)
number of temperature statistical samples
maximum temperature rate of change
temperature alarm count
T
N
T RMAX
T ALAR
T DELT
RHUM
temperature delta (difference from the other channel)
most recent relative humidity measurement
humidity rate of change
H RATE
H AVE
H STD
H MIN
H MAX
H SPR
relative humidity statistical mean
relative humidity standard deviation
minimum relative humidity
maximum relative humidity
relative humidity spread (maximum minus minimum)
number of humidity statistical samples
maximum relative humidity rate of change
relative humidity alarm count
H
N
H RMAX
H ALAR
H DELT
DEWP
HEAT
relative humidity delta (difference from the other channel)
dew point
heat index (apparent temperature as felt by humans)
recording channel/measurement type enable status
battery level
REC CH
BATT
MEAS
------
seconds to next measurement
separating line
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Menu Functions
Display Menu
5
avu013.jpg
Figure 5-12. Field Data
Use the B C buttons to change each of the settings. Press E to save and continue to the
next parameter. Press the F button to cancel any changes and exit to the menu.
Graph Scale
The GRAPH SCALE function allows the selection of the graph settings for each zone (1,
2, 3, or 4). Graph settings for each zone are used in common among all display layouts.
This may be password-protected. For each zone you may set the center of the vertical
axes for the temperature graphs (T CENT), the temperature scale for the axes (T SCAL),
the center of the vertical axes for the humidity graphs (H CENT), the humidity scale for
the axes (H SCAL), the time axis scale (time), and the number of grid divisions for the
graph (DIVS). Following is the range for each setting:
T CENT from 100.000 to -40.000
T SCAL from 100.000 to 0.100
H CENT from 100.000 to 0.000
H SCAL from 100.000 to 1.000
TIME from 1, 4, 10, 24 hours and 2, 5, 7, 15, 30 days
DIVS from 1, 2, 4, 6, 8, 10
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avu014.jpg
Figure 5-13. Graph Scale, Select Zone
avu015.jpg
Figure 5-14. Graph Scale
Use the E button to edit and save the new setting. Press F button to cancel any
changes and exit to the menu. On the last parameter, press the E button to exit to the
menu.
Display Reset
The DISPLAY RESET function allows all display layouts, field data settings and graph
scale settings to be reset to original settings. This may be password-protected.
Use the E button to reset the display settings. Press the F button to cancel any
changes and exit to the menu.
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Menu Functions
Data Menu
5
avu016.jpg
Figure 5-15. Display Reset
Data Menu
The DATA menu contains functions for recording measurement data and statistics as
well as transferring data to the data card.
The functions that appear in this menu are DATA RECORD, DAILY STATS, and
DATA CARD.
avu017.jpg
Figure 5-16. Data Menu
Use the A D buttons to select the menu. Press the E button to select the menu. Press
the F button to cancel any changes and exit to the menu.
When recording is enabled, measurements are stored in memory at the set period. The
data is highly compressed digitally to achieve a high storage density. This is done by
storing data in blocks, headed by product and sensor identification and time information
that applies to subsequent measurements up to the start of the next data block. A new data
block is started when the thermo-hygrometer is powered on, when record setting
parameters are changed, and when data is printed or written to a file. A new data block is
also started when the date or time is set, when the date changes, and at regular intervals
depending on the record period. Thus data blocks may contain various quantities of
measurements.
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Caution
When data recording memory fills up, the earliest block of data
is automatically discarded so recording of the most recent data
can continue.
Data Record
The DATA RECORD function allows the setting of the data recording features. The
functions that appear in this menu are RECORD SETTING, DATA VIEW, DATA
PRINT, DATA STORAGE, and DATA CLEAR.
avu018.jpg
Figure 5-17. Data Record
Use the A D buttons to select the menu. Press the E button to select the menu. Press
the F button to cancel any changes and exit to the menu.
Record Setting
The RECORD SETTING function allows you to select what is to be recorded and how
often the recording occurs. This may be password-protected. The temperature and
humidity from each channel can be recorded and the recording period is selectable.
To record the temperature on sensor channel 1, set REC 1/T to ON.
To record the humidity on sensor channel 1, set REC 1/H to ON.
To record the temperature on sensor channel 2, set REC 2/T to ON.
To record the humidity on sensor channel 2, set REC 2/H to ON.
The REC PER recording period is set by selecting 1, 2, 5, 10, 15, or 30 seconds, 1, 2, 5,
10, 20, or 30 minutes, or 1 hour for the REC PER.
Note
It is recommended that REC PER be set to 5 minutes or more; otherwise, the memory may fill up
quickly and redrawing graphs may be slow. Also note that graphs can only be redrawn if the
measurement for the channel is being recorded, as the graph data is obtained from recorded
data. The recording period affects the observable time resolution of graphs.
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Menu Functions
Data Menu
5
Caution
When the memory has been filled, the oldest block of data will
be discarded to allow new data to be recorded.
Measurement storage capacity can range between 28 hours and 2 years depending on the
record period and enabled channels. Refer to Table 5-2, Approximate Data Storage
Capacity.
Table 5-2. Aproximate Data Storage Capacity
Record Period
1 second
Storage, 1 channel
56 hours
Storage, 2 channels
28 hours
10 seconds
1 minute
20 days
10 days
18 weeks
20 months
24 months
24 months
24 months
9 weeks
5 minutes
10 minutes
30 minutes
1 hour
10 months
20 months
24 months
24 months
avu019.jpg
Figure 5-18. Record Setting
Use the A D buttons to select the setting to change. The B C buttons are used to change
the setting parameters. Press the E button to save the new setting. Press the F button
to cancel any changes and exit to the menu.
Data View
The DATA VIEW function allows viewing recorded data in NUMERIC or GRAPHIC
format.
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avu020.jpg
Figure 5-19. Data View, Begin Time
avu021.jpg
Figure 5-20. Data View, Numeric Format
The numeric mode displays the data in a numeric format. The BEGIN parameter specifies
the starting date and time of the data to display. Use the B C buttons to adjust the start
date and time. The format of the start date is according to D FORM in the SYSTEM,
DATE-TIME menu function. The format of the start time is 24 hour format.
Press the E button to display the data for the selected starting date and time. Use the A
D buttons to scroll through the data (you can go back two screens) and the B C buttons
to scroll among data blocks. Press the F button to cancel any changes and exit to the
menu.
The graphic mode displays the data in a graphic format. The CHAN parameter allows
you to select the channel from which to view the data. T CENT sets the center of the
vertical axis for temperature. T SCAL sets the scale. H CENT sets the center of the
vertical axes for humidity. H SCAL sets the scale. The TIME parameter is the length of
data to display and may be set to 1, 4, 10, or 24 hours, 2, 5, 7, 15, or 30 days. The DIVS
parameter is the number of divisions for the graph, and may be set to 1, 2, 4, 6, 8, or 10.
The BEGIN parameter sets the start date and the start time. The format of the start date is
according to the D FORM in the SYSTEM, DATE-TIME menu. The format of the start
time is 24 hour format.
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Menu Functions
Data Menu
5
Press the E button to display the data for the selected starting date and time in graphical
format. Press the F button to cancel any changes and exit to the menu.
Data Print
The DATA PRINT function allows recorded data to be printed over the serial or IR port.
The PORT parameter is selectable between SERIAL and IRDA/IRCOMM, depending on
the IRMODE setting. The FORMAT parameter may be set to BINARY or TEXT for the
serial port or IRCOMM port. The BEGIN parameter sets the start date and the start time
from which to start printing. The format of the start date is according to D FORM in
SYSTEM, DATE-TIME (Section ). The format of the start time is 24 hour format.
avu022.jpg
Figure 5-21. Data Print
The B C buttons are used to change the parameters. Press the E button to save the new
setting.
Press the F button to cancel any changes and exit to the menu.
Data Storage
The DATA STORAGE function allows viewing the status of the data memory. The
FILLED parameter shows the percentage of storage space used. The BYTES parameter
shows the number of bytes stored. The CAP parameter shows storage capacity, in bytes.
The INDEX parameter shows percentage of space used in the record block index. The
BEGIN parameter is the date of the earliest data. The END parameter is the date of the
latest data.
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avu023.jpg
Figure 5-22. Data Storage
Press the E or F button to exit.
Data Clear
The DATA CLEAR function clears the data collected. This function may be password
protected.
avu024.jpg
Figure 5-23. Data Clear
Press the E button to clear the data. Press the F button to cancel any changes and exit
to the menu.
Caution
Using this function will erase all recorded data and make it
irretrievable.
Daily Stats
The DAILY STATS menu can be used to record measurement statistics, such as average,
maximum, minimum, maximum rate, etc., for each day. Up to 60 days of statistics are
stored. Earliest statistics are erased automatically if needed to store another day’s
statistics. DAILY STATS can be set up to automatically store the running statistics on
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Menu Functions
Data Menu
5
any hour of the day and automatically reset the statistics on any hour. Measurement
statistics are kept as measurements are made. The current statistics can be displayed in
any STATS type zone. The statistics can also be stored automatically at the end of the
day and reset automatically at the beginning of the next day. The DAILY STATS menu
options are STATS SETTING, STATS VIEW,
STATS PRINT, STATS RESET, and STATS CLEAR. The DAILY STATS can be
password-protected.
avu025.jpg
Figure 5-24. Daily Stats
The A D buttons are used to select the menu option. The B C buttons are used to change
the setting parameters. Press the E button to save the new setting. Press the F button
to cancel any changes and exit to the menu.
Stats Setting
The STATS SETTING function sets the daily statistics recording options. The AUT REC
enables (ON) or disables (OFF) automatic recording of the statistics. The REC TIM may
be set from 00:00 to 23:00. The REC TIM function sets the hour just prior to which the
statistics are automatically recorded when AUT REC is ON. If REC TIM is 00:00, the
statistics are recorded after the last measurement of the day.
AUT RES enables (ON) or disables (OFF) automatic reset of the statistics and may be set
from 00:00 to 23:00. RES TIM sets the hour when the statistics are automatically reset if
AUT RES is ON. If RES TIM is 00:00, the statistics are reset just prior to the first
measurement of the day.
For example, to automatically store statistics for each day for measurements made in a
laboratory only between 8:00 in the morning and 5:00 (17:00) in the afternoon, set the
AUT REC to ON, REC TIM to 17:00, AUT RES to ON, and RES TIM to 08:00. Note
that statistics can also be manually reset using the STATS RESET function. DO NOT
manually reset the statistics if automatic recording is desired. The DAILY STATS
settings and STATS RESET can be password-protected to prevent inadvertent resetting
of the statistics. DAILY STATS cannot be manually stored.
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avu026.jpg
Figure 5-25. Stats Setting
The B C buttons are used to change the setting parameters. Press the E button to save
the new setting. Press the F button to cancel any changes and to exit to the menu.
Stats View
The STATS VIEW function is used to view daily statistics. Select a date and
measurement channel and type. The average, standard deviation, minimum, maximum,
spread, number, maximum rate, and alarm are displayed for the channel and
measurement type.
avu027.jpg
Figure 5-26. Stats View
The B C buttons are used to change the setting parameters. Press the E button to save
the new setting. Press the F button to cancel any changes and exit to the menu.
Stats Print
The STATS PRINT function allows daily statistics to be printed over serial or IR. The
PORT setting may be set to SERIAL or IRDA/IR COMM). Either IRDA or IR COMM is
available for the IR port depending onthe IR MODE setting
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Menu Functions
Data Menu
5
avu028.jpg
Figure 5-27. Stats Print
Press the E button to save the new setting. Press the F button to cancel any changes
and exit to the menu.
Stats Reset
The STATS RESET function resets current statistics. Statistics will then be based on
measurements made from this time forward. After pressing the E button, a WARNING
message will appear requesting a confirmation of the operation. If the E button is
pressed the stats are reset. If the F button is pressed the operation is canceled.
avu029.jpg
Figure 5-28. Stats Reset
Stats Clear
The STATS CLEAR function clears all daily statistics stored in memory. After pressing
the E button, a WARNING message will appear requesting a confirmation of the
operation. If the E button is pressed the stats are cleared. If the F button is pressed
the operation is cancelled.
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avu030.jpg
Figure 5-29. Stats Clear
Data Card
The DATA CARD function allows data to be written to a file on a data card or data in a
binary (.rec) file to be viewed. The DATA CARD options are FILE WRITE and FILE
VIEW.
avu031.jpg
Figure 5-30. Data Card
The A D and E buttons are used to select the menu function.
File Write
The FILE WRITE function allows the user to write data to a data card. The FORMAT
parameter is selectable between TEXT and BINARY.
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Menu Functions
Data Menu
5
avu032.jpg
Figure 5-31. File Write
Note
In order to view the data using the thermo-hygrometer or the LogWare III
software, the data must be saved in BINARY format.
Set the BEGIN parameter to the beginning date and time of the data that is to be written
to a data card. Set the END parameter to the ending time and date of the data that is to be
written to a data card. Choosing END for the END parameter will automatically select
the most recent reading as the END parameter.
After the BEGIN and END parameters are entered and the E button is pressed, a
message is displayed stating READY, the FILE NAME, and the number of DATA
BYTES to be written.
The E button is used to save the data to the file. Press the F button to cancel any
changes and exit to the menu.
File View
The FILE VIEW function is used to view data from a binary (.rec) file on a data card. In
order to view the data using the thermo-hygrometer or the LogWare III software, the data
must be saved in BINARY format. If no binary (.rec) files are found on the data card, a
NO FILES FOUND message will be displayed.
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avu033.jpg
Figure 5-32. File View
To view a file select the file to open by using the A D buttons and press E. You may
choose between numeric and graphic format. To view data in numeric format, select
NUMERIC in the mode field using the A D buttons and press E. Use the du buttons
to scroll through the data (you can go back three screens) and the B C buttons to scroll
among data blocks.
To view data in graphic format, select GRAPHIC in the mode field using the A D
buttons and press E. The GRAPHIC mode displays the data in a graphic format. The
CHAN parameter allows you to select the channel from which to view the data. Use T
CENT, T SCAL, H CENT, and H SCAL to set the vertical axis center and scale for the
temperature and relative humidity graphs. The TIME parameter is the length of data to
display and may be set to 1, 4, 10, or 24 hours, 2, 5, 7, 15, or 30 days. The DIVS
parameter is the number of divisions for the graph, and may be set to 1, 2, 4, 6, 8, or 10.
The BEGIN parameter sets the start date and the start time. The format of the start date is
according to the D FORM in the SYSTEM, DATE-TIME menu. The format of the start
time is 24 hour format.
Alarm Menu
The ALARM menu allows the setting and viewing of alarms. The functions that appear
in this menu are ALARM SETTING, SENSOR ALARM, SYSTEM ALARM, and
ALARM VIEW. Alarm settings may be password protected.
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Menu Functions
Alarm Menu
5
avu034.jpg
Figure 5-33. Alarm
The A D buttons are used to select the menu option. The B C buttons are used to change
the parameter setting. Press the E button to save the new setting. Press the F button
to cancel any changes made and exit to the menu.
Alarm Setting
The ALARM SETTING function is used to enable or disable visible and audible alarm
notifications. The parameters are BEEP and DISPLAY.
When the BEEP parameter is ON, the thermo-hygrometer emits an audible beep during
an alarm condition. For the power alarm it is four short beeps every 20 seconds. For the
battery alarm it is three short beeps every minute.
For the sensor disconnect alarm it is two short beeps every measurement period. For
measurement alarms it is one long beep every measurement period. When the DISPLAY
parameter is ON, an alert message is displayed when an alarm condition occurs.
avu035.jpg
Figure 5-34. Alarm Setting
The A D buttons are used to select the menu option. The B C buttons are used to change
the parameter setting. Press the E button to save the new setting. Press the F button
to cancel any changes and exit to the menu.
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Sensor Alarm
The SENSOR ALARM function allows the setting of the alarm parameters for each
channel.
To set alarm parameters, a channel number and measurement type (T or H) must first be
selected using B C and ENTER buttons.
avu036.jpg
Figure 5-35. Sensor Alarm
The PARAM parameter is selectable between 1/T, 1/H, 2/T, 2/H. The 1 and 2 refer to the
channel selected, T is temperature and H is humidity.
The A D buttons are used to select the menu option. The B C buttons are used to change
the parameter setting. Press the E button to save the new setting. Press the F button
to cancel any changes and exit to the menu.
Once an option is selected, the parameters LOWER, L ENAB, UPPER, U ENAB, RATE,
R ENAB, and SENSOR for the given channel (1 or 2) and measurement type (T or H) are
displayed. The LOWER parameter is the lower limit alarm. The L ENAB parameter is
used to turn the lower limit alarm ON or OFF. The UPPER parameter is the upper limit
alarm. The U ENAB parameter is used to turn the upper limit alarm ON or OFF. The
RATE parameter is the upper limit of the absolute value of the rate of change expressed
in degrees/hour or %RH/hour. The R ENAB parameter is used to turn the rate alarm ON
or OFF. The SENSOR parameter is used to turn the sensor fault alarm ON or OFF.
The A D buttons are used to select the menu option. The B C buttons are used to change
the parameter setting. Press the E button to save the new setting. Press the F button
to cancel any changes and exit to the menu.
System Alarm
The SYSTEM ALARM function allows the battery or power alarms to be turned ON or
OFF.
When the BATTERY alarm is turned ON, an alarm occurs when the battery charge is
low.
When the POWER alarm is ON and a battery is installed, an alarm occurs when the
power is disconnected. This alarm will continue to sound every 20 seconds until power is
restored or the battery is discharged.
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System Menu
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avu037.jpg
Figure 5-36. System Alarm
The A D buttons are used to select the menu option. The B C buttons are used to change
the parameter setting. Press the E button to save the new setting. Press the F button
to cancel any changes and exit to the menu.
Alarm View
The ALARM VIEW function displays alarm occurrences. The word ALARM flashes at
the top of the display and any alarm condition is displayed with the time and date that the
alarm occurred.
avu038.jpg
Figure 5-37. Alarm View
Press the E button to clear the alarms. Press the F button to retain any alarms and
exit to the menu.
System Menu
The SYSTEM menu provides access to the general settings for the system such as
temperature unit, date and time, the communication port settings, password settings, and
viewing the system information. The functions that appear in this menu are SYSTEM
SETTING, DATE TIME, COMM SETTING, PASSWORD, and SYSTEM INFO.
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avu039.jpg
Figure 5-38. System Menu
The A D buttons are used to select the menu option. The B C buttons are used to change
the parameter settings. Press the E button to save the new setting. Press the F button
to cancel any changes and exit to the menu.
System Setting
The SYSTEM SETTING function allows you to change the temperature measurement
unit.
The UNIT parameter switches between C (Celsius) or F (Fahrenheit). This may be
password protected with the SENSOR password parameter.
When the measurement unit is changed and the E button is selected, the next
measurement is displayed in the new measurement unit.
avu040.jpg
Figure 5-39. System Setting
The B C buttons are used to change the setting parameters. Press the E button to save
the new setting. Press the F button to cancel any changes and exit to the menu.
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Menu Functions
System Menu
5
Date Time
The DATE TIME function is used for setting the time-of-day clock, time format, date,
and date format. This may be password protected using the TIME password parameter in
the PASSWORD menu functions.
When this function is selected available parameters are HOUR, MINUTE, SECOND, T
FORM, DAY, MONTH, YEAR, D FORM, and DAYL S.
avu041.jpg
Figure 5-40. Data Time
The HOUR parameter allows the user to set the time-of-day clock hour (0 through 23).
The MINUTE parameter allows the user to set the time-of-day clock minutes (0 through
59).
The SECOND parameter allows the user to set the time-of-day clock seconds (0 through
59).
The T FORM parameter allows the user to set the time format used for displaying the
time. The choices are 12-hour format or 24-hour format.
The DAY parameter allows the user to set the current day of the month (1-31).
The MONTH parameter allows the user to set the current month (1 - 12).
The YEAR parameter allows the user to set the current year (1999 through 9999).
The D FORM parameter allows the user to set the date format used when displaying the
date. The choices are M-D-YY, M-D-YYYY, D/M/YY, and D/M/YYYY.
The DAYL S parameter allows the user to set the clock to automatically adjust for
daylight saving shifts in the spring and fall. The choices are N AMER (United States and
Canada), EUROPE, or OFF.
Be aware that automatic time changes due to the daylight saving time shift feature, and
also manual time changes for that matter, will cause discontinuities in the time that may
have unusual effects that should be noted.
One possible effect is with recorded daily stats. If the record time is reached twice within
one day due to a time shift backwards, daily stats will be recorded twice for the same
date. This can happen if the daily stats record time is set to 00:00, the daylight saving
mode is set to Europe, and a fall backwards time shift occurs. Since the time 00:00 occurs
twice for one day, two daily stats records will be created for the same day. It can also
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Users Manual
occur with the North America daylight saving mode if the daily stats record time is 01:00,
since this time will occur twice in one day.
Another effect is with viewing data on a graph in real time. Data is plotted on the graph
sequentially as measurements are made and the graph is scrolled uniformly. No
adjustment is made to the real-time graph when the time changes. However, when a
graph is redrawn (using recorded data, as a result of changing the display layout or
cycling the power) in preparation to resume real-time plotting, the thermo-hygrometer
attempts to accurately plot measurement points at the appropriate time locations. Thus, a
one-hour spring daylight saving time shift will appear as a one-hour gap in the data on the
graph. When a jump backwards is found in the recorded data, such as occurs during the
fall daylight saving time shift, the thermo-hygrometer makes no attempt to plot the data
prior to the time shift; there will appear to be missing data on the left side of the graph.
Graphs drawn using the DATA VIEW function behave similarly when time
discontinuities occur in recorded data. A one-hour jump forward in time causes a one-
hour gap in the data on the graph. However, a one-hour jump backwards in time produces
a graph that also includes the data prior to the time shift. The repeated hour of data is also
plotted but is compressed into one time point, the time just prior to the time shift. In other
words, the data prior to the time shift is plotted first. Then when data for the first hour
after the one-hour shift backwards is encountered, the data is plotted as if it all occurred
at the instant of the time change. Then when the hour's data has passed, plotting resumes
normally and the data is plotted to the right of the time shift.
Note that in any case data is recorded to memory as would be expected, with a one hour
time gap or a repeated hour when a daylight saving time shift occurs. The effects of the
automatic daylight saving time shifts should cause minimal inconvenience, as they occur
early Sunday morning. To prevent confusion and time ambiguity problems, avoid
running environment-sensitive operations during the daylight saving time shift. Also
consider temporarily suspending data recording for days on which daylight saving time
shifts occur. But if you do this, be sure to resume data recording when you need it!
The A D buttons are used to select the menu parameter. The B C buttons are used to
change the parameters. Press the E button to save the new setting. Press the F button
to cancel any changes and exit to the menu.
Comm Setting
The COMM SETTING function is used to setup the communication parameters for the
communication ports. Communications ports are used for communicating with a
computer, printer, or other equipment. The thermo-hygrometer includes a serial (RS-232)
port and IR port. To edit the settings for a specific port it must first be selected. The
selections are SERIAL, IR, and ERRORS.
The ERRORS setting allows the user to view any error messages stored in the error
queue. Once an error has been viewed, it is removed from the error queue.
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Menu Functions
System Menu
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avu042.jpg
Figure 5-41. Comm Setting
The B C buttons are used to change the parameter setting. Press the E button to save
the new setting. Press the F button to cancel any changes and exit to the menu.
Serial
When the SERIAL port is selected, the parameters for the serial port are displayed
beneath the PORT selection. These parameters are: BAUD, LF, ECHO, SER PER, and
PRINT.
avu043.jpg
Figure 5-42. Serial
The BAUD parameter allows the user to select the baud rate for communications on this
port. The user may choose between 1200, 2400, 4800, 9600, 19200, 38400, and 57600.
The default baud rate is 9600.
The LF parameter allows the user to specify whether a linefeed character (ASCII 0A hex
or 10 decimal) is appended to the end of each line transmitted over the serial port.
Selecting ON sends both a carriage return (ASCII 0A hex or 13 decimal) and a linefeed.
Selecting OFF sends only a carriage return.
The ECHO parameter allows the user to set the echo (duplex) mode. Selecting ON
enables echoing so that all characters received on the serial port are echoed back over the
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serial port. Echo mode ON is useful when using terminal emulation software on a
computer to communicate with the instrument. Selecting OFF disables echoing. Echo
mode OFF is commonly used when using control software on the computer.
The SER PER parameter allows the user to select the interval at which measurements are
automatically transmitted over the serial port. The user may choose between 1, 2, 5, 10,
15, and 30 seconds, 1, 2, 5, 10, 15, 20, and 30 minutes, and 1 hour.
The PRINT parameter allows the user to enable automatic printing of measurements over
the serial port. Selecting ON enables printing and selecting OFF disables printing.
Press the B C buttons to change a parameter setting. Use the A D buttons to move
between parameters. Press the E button to save the new setting. Press the F button to
cancel any changes and exit to the menu.
IR
When the IR port is selected, the MODE parameter for the IR port is displayed beneath
the PORT selection. The MODE parameter allows the user to select the protocol used by
the IR port to transmit and receive data. The selections are COMM, IRDA, and OFF.
avu044.jpg
Figure 5-43. IR
The COMM setting allows the user to transmit data over the IR port at 9600 baud in
simple ASCII format. The IRDA option allows the user to print data to an IrDA
compatible printer (such as an HP LaserJet 2100). Automatic real time printing is not
available with the IrDA mode. The OFF option turns the IR port off.
Press the B C buttons to select a parameter setting. Use the A D buttons to move
between parameters. Press the E button to save the new setting. Press the F button to
cancel any changes and to exit to the menu.
Password
The PASSWORD function is used for changing the password required for access to
password-protected parameters and for determining whether or not to password-protect
those given parameters. When this function is selected, the PASS parameter is displayed.
The password must be entered correctly to access the password settings. Press the B C
buttons to highlight the digit you want to change. Use the A D buttons to scroll through
the numbers 0-9 to set each digit of the password. Press the E button to accept the
password or press the F button to cancel any changes and exit to the menu.
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System Menu
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avu045.jpg
Figure 5-44. Password
By default the password is set to “5020A” when the instrument ships from the factory.
We recommend the user changes the default password to secure the password-protected
settings.
NOTE
Keep your password in a secure location.
If an incorrect password is entered, the message WRONG PASSWORD is displayed and
access to the password-protected parameters is denied. Press the E button to reenter the
password.
If a correct password is entered, the password-protected parameters PASS, SENSOR,
RECORD, STATS, ALARM, and TIME are displayed.
The PASS parameter allows the user to change the password and consists of a four digit
number.
The SENSOR parameter allows the user to turn the password-protection for sensor and
channel settings ON or OFF.
The RECORD parameter allows the user to turn the password-protection for data
recording settings ON or OFF.
The STATS parameter allows the user to turn the password-protection of statistics and
daily stats settings ON or OFF.
The ALARM parameter allows the user to turn the password-protection of alarm settings
ON or OFF.
The TIME parameter allows the user to turn the password-protection of time and date
settings ON or OFF.
Press the B C buttons to highlight the digit to change. Use the A D buttons to scroll
through the numbers 0-9. Press the E button to save the new setting. Press the F
button to cancel any changes and to move to the next parameter or exit to the menu.
Note
Keep your password in a secure location and do not forget the password.
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System Info
The SYSTEM INFO function displays information about the thermo-hygrometer. The
information includes the manufacturer, model number, serial number, firmware version,
boot version, and battery level.
avu002.jpg
Figure 5-45. System Info
Press the E button when you are done viewing the system information or the F
button.
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Chapter 6
Digital Communications Interface
Title
Page
Introduction........................................................................................................ 6-3
Communications................................................................................................ 6-3
Serial Wiring ................................................................................................. 6-3
Interface Commands.......................................................................................... 6-4
Command Summary...................................................................................... 6-4
Command Syntax .......................................................................................... 6-4
Commands ......................................................................................................... 6-12
Alarm Commands.......................................................................................... 6-13
Measurement Commands .............................................................................. 6-22
Data Commands ............................................................................................ 6-26
Channel Commands....................................................................................... 6-32
Calibration Commands.................................................................................. 6-33
System Commands ........................................................................................ 6-35
Date and Time Commands ............................................................................ 6-39
Password Commands..................................................................................... 6-41
Status Commands.......................................................................................... 6-44
Port Numbers................................................................................................. 6-52
Date and Time Formats ................................................................................. 6-53
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Digital Communications Interface
Introduction
6
Introduction
The communication feature allows an external device, such as a computer, to
communicate with the thermo-hygrometer readout to obtain measurement data and
control operation settings. Communication is accomplished by issuing commands to the
thermo-hygrometer readout through RS-232 or IR communication ports.
Communications
The thermo-hygrometer readout is equipped with an RS-232 serial interface and an
infrared window. The serial interface allows communications up to distances of
approximately 50 feet. The IR interface allows close proximity, line-of-sight, wireless
communications. The serial interface and infrared window allow the user to access the
functions, parameters, and settings discussed in Comm Setting.
Serial Wiring
The serial communications cable attaches to the thermo-hygrometer readout through the
RS-232 port on the left side of the instrument. Figure 6-1 shows the pin-out of this
connector and suggested cable wiring. Note the TxD line on one side connects to the RxD
line on the other side and vice-versa. To eliminate noise, the serial cable should be
shielded with low resistance between the connector and the shield.
The serial period, baud rate, linefeed, and echo (duplex) are programmable. Refer to
Section , Comm Setting, for instructions on accessing and setting these parameters.
All commands sent to the thermo-hygrometer readout through the serial interface must be
terminated with a carriage return (ASCII 0D hex, 13 decimal) or new line character
(ASCII 0A hex, 10 decimal).
5
GND
9
GND
RxD
TxD
4
3
2
1
8
7
6
TxD
RxD
avu056.eps
Figure 6-1. Serial Cable Wiring
6-3
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Interface Commands
Command Summary
An alphabetical listing of the commands implemented by the thermo-hygrometer readout
are shown in Table 6-1. These commands can be used with either serial or IR
communications ports.
Command Syntax
The thermo-hygrometer readout accepts commands that set parameters, execute functions
or respond with requested data. These commands are in the form of strings of ASCII-
encoded characters. As far as possible, the thermo-hygrometer readout conforms to SCPI-
1994. One notable exception is that compound commands are not allowed as explained
below.
Commands consist of a command header and, if necessary, parameter data. All
commands must be terminated with either a carriage return (ASCII 0D hex, 13 decimal)
or new line character (ASCII 0A hex, 10 decimal).
Command headers consist of one or more mnemonics separated by colons (:).
Mnemonics may use letter characters, the underscore character (_), and possibly numeric
digits as well. Commands are not case sensitive. Mnemonics often have alternate forms.
Most mnemonics have a long form that is more readable and a short form consisting of
three or four characters that is more efficient.
A mnemonic may end with a numeric suffix that specifies one of a set of independent
function blocks such as input channel data paths. If a numeric suffix is omitted when a
particular block must be specified, an error is generated (“Header suffix out of range”).
Query commands are commands that request data in response. Query commands have a
question mark (?) immediately following the command header. Responses to query
commands are generated immediately and placed in the output buffer. Responses are then
transmitted automatically over the RS-232 or IR ports. Responses are lost if not read
before the next command is received.
Some commands require parameter data to specify values for one or more parameters.
The command header is separated from the parameter data by a space (ASCII 20 hex, 32
decimal). Multiple parameters are separated by a comma (,).
The thermo-hygrometer readout does not allow compound commands (multiple
commands per line separated with semicolons). All commands are sequential. The
execution of each command is completed before subsequent commands are processed.
Table 6-1. Interface Commands
Command
Description
Clear the status registers
*CLS
*ESE?
Returns the Standard Event Status Enable register
Sets the Standard Event Status Enable register
Returns the Standard Event Status register
*ESE <num>|MIN|MAX|DEF
*ESR?
*IDN?
Returns the instrument identification string that
indicates the manufacturer, model number, serial
number, and firmware version
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Interface Commands
6
*OPT?
*RST
Returns configuration options
Sets the instrument operating parameters to defined
conditions
*SRE?
Returns the Service Request Enable register
Sets the Service Request Enable register
Returns the Status Byte register
*SRE <num>|MIN|MAX|DEF
*STB?
*TST? [<bool>]
Returns the self-test results (0: startup test; 1: new
test)
ALARm:BATTery?
Returns the battery alarm event
ALARm:BATTery:ENABle?
ALARm:BATTery:ENABle <bool>
ALARm:BEEP?
Returns the state of the battery alarm enable
Enables or disables the battery alarm
Returns the state of the alarm beep enable
Enables or disables the alarm beep
Clears the alarm events
ALARm:BEEP <bool>
ALARm:CLEar
ALARm:DATE:FIRST?
ALARm:DATE:LAST?
ALARm:DISPlay?
Returns the date of the first alarm event
Returns the date of the latest alarm event
Returns the state of the alarm display enable
Enables or disables the alarm display
Returns the power loss alarm event
Returns the state of the power loss alarm enable
Enables or disables the power loss alarm
ALARm:DISPlay <bool>
ALARm:POWer?
ALARm:POWer:ENABle?
ALARm:POWer:ENABle <bool>
ALARm:RHUMidity<chn>:LOW?
Returns the state of the low humidity alarm for the
specified channel
ALARm:RHUMidity<chn>:LOW:ENABle?
ALARm:RHUMidity<chn>:LOW:ENABle <bool>
ALARm:RHUMidity<chn>:RATE?
Returns the state of the low humidity alarm enable for
the specified channel
Enables or disables the low humidity alarm enable for
the specified channel
Returns the state of the humidity rate alarm for the
specified channel
ALARm:RHUMidity<chn>:RATE:ENABle?
ALARm:RHUMidity<chn>:RATE:ENABle <bool>
ALARm:RHUMidity<chn>:RATE:LIMit?
Returns the state of the humidity rate alarm enable for
the specified channel
Enables or disables the humidity rate alarm for the
specified channel
Returns the humidity rate alarm limit for the specified
channel
ALARm:RHUMidity<chn>:RATE:LIMit
<num>|MIN|MAX|DEF
Sets the humidity rate alarm limit for the specified
channel
ALARm:RHUMidity<chn>:SENSor?
Returns the state of the humidity sensor alarm for the
specified channel
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ALARm:RHUMidity<chn>:SENSor:ENABle?
ALARm:RHUMidity<chn>:SENSor:ENABle <bool>
ALARm:RHUMidity<chn>:UPPer?
Returns the state of the humidity sensor alarm enable
for the specified channel
Enables or disables the humidity sensor alarm for the
specified channel
Returns the state of the high humidity event for the
specified channel
ALARm:RHUMidity<chn>:UPPer:ENABle?
ALARm:RHUMidity<chn>:UPPer:ENABle <bool>
ALARm:RHUMidity<chn>:UPPer:LIMit?
Returns the state of the high humidity alarm enable for
the specified channel
Enables or disables the high humidity alarm for the
specified channel
Returns the high humidity alarm limit for the specified
channel
ALARm:RHUMidity<chn>:UPPer:LIMit
<num>|MIN|MAX|DEF
Sets the high humidity alarm limit for the specified
channel
ALARm:TEMPerature<chn>:LOW?
Returns the state of the low temperature alarm for the
specified channel
ALARm:TEMPerature<chn>:LOW:ENABle?
ALARm:TEMPerature<chn>:LOW:ENABle <bool>
ALARm:TEMPerature<chn>:LOW:LIMit?
Returns the state of the low temperature alarm enable
for the specified channel
Enables or disables the low temperature alarm for the
specified channel
Returns the low temperature alarm limit for the
specified channel
ALARm:TEMPerature<chn>:LOW:LIMit
<num>|MIN|MAX|DEF
Sets the low temperature alarm limit for the specified
channel
ALARm:TEMPerature<chn>:RATE?
Returns the state of the temperature rate alarm for the
specified channel
ALARm:TEMPerature<chn>:RATE:ENABle?
ALARm:TEMPerature<chn>:RATE:ENABle <bool>
ALARm:TEMPerature<chn>:RATE:LIMit?
Returns the state of the temperature rate alarm enable
for the specified channel
Enables or disables the temperature rate alarm for the
specified channel
Returns the temperature rate alarm limit for the
specified channel
ALARm:TEMPerature<chn>:RATE:LIMit
<num>|MIN|MAX|DEF
Sets the temperature rate alarm limit for the specified
channel
ALARm:TEMPerature<chn>:SENSor?
Returns the state of the temperature sensor alarm for
the specified channel
ALARm:TEMPerature<chn>:SENSor:ENABle?
ALARm:TEMPerature<chn>:SENSor:ENABle <bool>
ALARm:TEMPerature<chn>:UPPer?
Returns the state of the temperature sensor alarm
enable for the specified channel
Enables or disables the temperature sensor alarm for
the specified channel
Returns the state of the high temperature alarm for the
specified channel
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Digital Communications Interface
Interface Commands
6
ALARm:TEMPerature<chn>:UPPer:ENABle?
ALARm:TEMPerature<chn>:UPPer:ENABle <bool>
ALARm:TEMPerature<chn>:UPPer:LIMit?
Returns the state of the high temperature alarm
enable for the specified channel
Enables or disables the high temperature alarm for the
specified channel
Returns the high temperture alarm limit for the
specified channel
ALARm:TEMPerature<chn>:UPPer:LIMit
<num>|MIN|MAX|DEF
Sets the high temperture alarm limit for the specified
channel
ALARm:TIME:FIRSt?
ALARm:TIME:LAST?
CALibrate<chn>:ALERt?
Returns the time of first alarm event
Returns the time of latest alarm event
Returns the state of the calibration alert enable for the
specified channel
CALibrate<chn>:ALERt <bool>
Enables or disables the sensor alert enable for the
specified channel
CALibrate<chn>:DATe:CALibrate?
Returns the sensor calibration date for the specified
channel
CALibrate<chn>:DATe:CALibrate
(<year>,<month>,<day>)
Sets the sensor calibration date for the specified
channel
CALibrate<chn>:DATe:DUE?
Returns the sensor calibration due date for the
specified channel
CALibrate<chn>:DATe:DUE (<year>,<month>,<day>)
CALibrate<chn>:EXPiration?
Sets the sensor calibration due date for the specified
channel
Returns the sensor calibration expiration for the
specified channel
CALibrate<chn>:PARameter:LINearity<chn>?
CALibrate<chn>:PARameter:LINearity<chn> <float>
CALibrate<chn>:PARameter:OFFSets<chn>?
CALibrate<chn>:PARameter:OFFSets<chn> <float>
CALibrate<chn>:PARameter:SCALe<chn>?
CALibrate<chn>:PARameter:SCALe<chn> <float>
Returns the sensor calibration linearity for the
specified channel (temperature or humidity)
Sets the sensor calibration linearity the specified
channel(temperature or humidity)
Returns the sensor calibration offsets for the specified
channel (temperature or humidity)
Sets the sensor calibration offsets for the specified
channel (temperature or humidity)
Returns the sensor calibration scale for the specified
channel (temperature or humidity)
Sets the sensor calibration scale for the specified
channel (temperature or humidity)
CALCulate:AVERage:CLEar
CALCulate<chn>:DEWPoint?
Resets all running statistics
Returns the dew-point measurement for the specified
channel
CALCulate<chn>:HINDex?
Returns the heat index measurement for the specified
channel
CALCulate<chn>:PARameter<num>:AVERerage<nu
Returns a running statistic for the specified channel
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m>?
CALCulate<chn>:PARameter<num>:
AVERerage<num>:CLEar
Resets all running statistics
CALCulate<chn>:PARameter<num>:
AVERerage<num>:DATA?
Returns a running statistic for the specified channel
CALCulate[<chn>]:PARameter<num>:
AVERerage<num>:TYPE?
Returns statistical type for the specified channel
(temperature, humidity, type)
CALCulate<chn>:PARameter<num>:RATE?
Returns rate calculation for the specified channel
Returns the rate time span
CALCulate[<chn>]:PARameter[<num>]:RATE:TIME?
CALCulate[<chn>]:PARameter[<num>]:RATE:TIME
<num>|MIN|MAX|DEF
Sets the rate time span
CALCulate[<chn>]:PARameter<num>:RESolution?
Returns the display resolution
Sets the display resolution)
CALCulate<chn>:PARameter<num>:RESolution
<num>|MIN|MAX|DEF
DATa:DSTat:ENABle?
Returns the state of the daily stats recording enable
Enables or disables the daily stats recording enable
Returns the daily stats recording time
Sets the daily stats recording time
DATa:DSTat:ENABle <bool>
DATa:DSTat:HOUR?
DATa:DSTat:HOUR <num>|MIN|MAX|DEF
DATa:DSTat:RENable?
Returns the state of the statistics reset enable
Enables or disables the statistics reset
Returns the statistics reset time
DATa:DSTat:RENable <bool>
DATa:DSTat:RHOur?
DATa:DSTat:RHOur <num>|MIN|MAX|DEF
DATa:DSTat:RECord:BTIMe? [<num>]
DATa:DSTat:RECord:CLEar
Sets the statistics reset time
Returns the daily stats record begin time
Clears all daily stats records
DATa:DSTat:RECord:COUNt? [MAX]
DATa:DSTat:RECord:DATE? [<num>]
DATa:DSTat:RECord:ETIMe? [<num>]
DATa:DSTat:RECord:FIND? [<year>,<month>,<day>]
Returns the daily stats record count
Returns the daily stats record date
Returns the daily stats record end time
Returns the daily stats record number for the given
date
DATa:DSTat:RECord:VALue? [<num>,<chn>,<type>]
DATa:RECord:CLEar
Returns the daily stats statistical calculation
Clears all recorded data
DATa:RECord:FEED:RHUMidity<chn>?
Returns the state of the humidity recording for the
specified channel
DATa:RECord:FEED:RHUMidity<chn> <bool>
DATa:RECord:FEED:TEMPerature<chn>?
DATa:RECord:FEED:TEMPerature<chn> <bool>
Enables or disables the humidity recording for the
specified channel
Returns the state of the temperature recording for the
specified channel
Enables or disables the temperature recording for the
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Digital Communications Interface
Interface Commands
6
specified channel
DATa:RECord:FREE?
DATa:RECord:OPEN?
Returns the recording memory usage
Returns the number of bytes in the open data set
Opens the range of data for reading
DATa:RECord:OPEN
(<year>,<month>,<day>,<hour>,<minute>,<second>[,
<year>,<month>,<day>,<hour>,<minute>,<second>)
DATa:RECord:READ? [<num>]
DATa:RECord:TIMe?
Returns a group of data
Returns the data recording timer
Sets the data recording timer
DATa:RECord:TIMe <num>|MIN|MAX|DEF
FETCh? [<chn>]
Returns the temperature and humidity measurements
for the specified channel
FORMat:TDSTamp:STAT?
Returns the state of the date/time stamp for
FETCh,MEASure, or READ command
FORMat:TDSTamp:STAT? <bool>
Enables or disables the date/time stamp for FETCh,
MEASure, or READ command
INITiate
no action
INITiate:CONTinous?
MEASure? [<chn>]
Returns the continuous state (always 1)
Returns the temperature and humidity measurements
for the specified channel
READ? [<chn>]
Returns the temperature and humidity measurements
for the specified channel
ROUTe:CLOSe? [<chn>]
ROUTe:CLOSe <chn>
ROUTe:OPEN? [<chn>]
ROUTe:OPEN <chn>
SENSor:AVERage?
Returns the state of the specified channel
Enables the specified channel
Returns the channel state
Disables the specified channel
Returns the state of the measurement averaging
Enables or disables the measurement averaging
SENSor:AVERage <bool>
SENSor<chn>:LOCK?
Returns the state of the sensor lock for the specified
channel
SENSor<chn>:LOCK <bool>
SENSor<chn>:IDENification?
Enables or disables the sensor lock for the specified
channel
Returns the sensor identification for the specified
channel
SENSor<chn>:IDENification <str>
SENSor<chn>:STATus?
STATus:ALARm?
Sets the sensor identification for the specified channel
Returns the sensor status for the specified channel
Returns and clears the alarm status event
Returns the alarm status condition
STATus:ALARm:CONDition?
STATus:ALARm:ENABle?
Returns the alarm status enable
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STATus:ALARm:ENABle <num>|MIN|MAX|DEF
STATus:MEASure?
Sets the alarm status enable
Returns and clears the measurement status event
Returns the measurement status condition
Returns the measurement status enable
Sets the measurement status enable
Returns and clears the operation status event
Returns the operation status condition
Returns the operation status enable
Sets the operation status enable
STATus:MEASure:CONDition?
STATus:MEASure:ENABle?
STATus:MEASure:ENABle <num>|MIN|MAX|DEF
STATus:OPERation?
STATus:OPERation:CONDition?
STATus:OPERation:ENABle?
STATus:OPERation:ENABle <num>|MIN|MAX|DEF
STATus:QUEStion?
Returns and clears the questionable status event
Returns the questionable status condition
Returns the questionable status enable
Set the questionable status enable
Returns the boot ROM version
STATus:QUEStion:CONDition?
STATus:QUEStion:ENABle?
STATus:QUEStion:ENABle <num>|MIN|MAX|DEF
SYSTem:BOOT:VERSion?
SYSTem:COMMunicate:IR:MODE?
SYSTem:COMMunicate:IR:MODE <num>
SYSTem:COMMunica:SERial:BAUD?
Returns the IR mode (0: off; 1: COMM; 2: IrDA)
Set the IR mode
Returns the serial port baud rate
SYSTem:COMMunica:SERial:BAUD
<num>|MIN|MAX|DEF
Sets the serial port baud rate
SYSTem:COMMunica:SERial:FDUPlex?
SYSTem:COMMunica:SERial:FDUPlex <bool>
SYSTem:COMMunica:SERial:FEED?
Returns the state of the serial port echo
Enables or disables the serial port echo
Returns the state of the serial port auto printing
Enanbles or disables the serial port auto printing
Returns the state of the serial port linefeed
Enables or disables the serial port linefeed
Returns the serial port auto printing timer
Sets the serial port auto printing timer
SYSTem:COMMunica:SERial:FEED <bool>
SYSTem:COMMunica:SERial:LINefeed?
SYSTem:COMMunica:SERial:LINefeed <bool>
SYSTem:COMMunica:SERial:TIMe?
SYSTem:COMMunica:SERial:TIMe
<num>|MIN|MAX|DEF
SYSTem:DATE?
Returns the clock date
Sets the clock date
SYSTem:DATE (<year>,<month>,<day>)
SYSTem:DATE:FORMat?
Returns the display date format (0: mm-dd-yy; 1: mm-
dd-yyyy; 2: dd/mm/yy; 3: dd/yy/yyyy)
SYSTem:DATE:FORMat <num>|MIN|MAX|DEF
SYSTem:DECimal:FORMat?
Sets the display date format
Returns the display decimal option (0: ‘.’; 1: ‘,’)
Sets the display decimal option
Returns the system error log
SYSTem:DECimal:FORMat <num>|MIN|MAX|DEF
SYSTem:ERRor?
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Digital Communications Interface
Interface Commands
6
SYSTem:FIRMware:VERSion?
SYSTem:KLOCkout?
Returns the system firmware version
Returns the state of the button panel lockout
Enables or disables the button panel lockout
SYSTem:KLOCkout <bool>
SYSTem:PASSword:ALARm?
Returns the state of the alarm settings password
protection
SYSTem:PASSword:ALARm <bool>
Enables or disables the alarm settings password
protection
SYSTem:PASSword:CDISable
Disables password-protected commands
Enables password-protected commands
Returns the current password-protected state
Sets the new password
SYSTem:PASSword:CENable <num>
SYSTem:PASSword:CENable:STATe?
SYSTem:PASSword:NEW <num>|DEF
SYSTem:PASSword:RECord?
Returns the state of the data recording password
protection
SYSTem:PASSword:RECord <bool>
SYSTem:PASSword:SENSor?
Enables or disables the data recording password
protection
Returns the state of the sensor settings password
protection
SYSTem:PASSword:SENSor <bool>
SYSTem:PASSword:STATistics?
SYSTem:PASSword:STATistics <bool>
Enables or disables the sensor settings password
protection
Returns the state of the statistics settings password
protection
Enables or disables the state of the statistics settings
password protection
SYSTem:PASSword:TIME?
SYSTem:PASSword:TIME <bool>
SYSTem:POWer:BATTery?
SYSTem:TIME?
Returns the state of the date/time password protection
Enables or disables the date/time password protection
Returns the battery level percent
Returns the clock time
SYSTem:TIME (<hour>,<minute>,<second>)
SYSTem:TIME:DAYLight?
Sets the clock time
Returns the automatic daylight saving adjustment
setting
SYSTem:TIME:DAYLight <num>|MIN|MAX|DEF
SYSTem:TIME:FORMat?
Sets the automatic daylight saving adjustment setting
Returns the display time format
Sets the display time format
SYSTem:TIME:FORMat <num>|MIN|MAX|DEF
SYSTem:VERSion?
Returns the SCPI version number
Returns the measurement period
Sets the measurement period
TRIGger:TIMe?
TRIGger:TIMe <num>|MIN|MAX|DEF
UNIT:TEMPerature?
Returns the temperature unit
UNIT:TEMPerature <unit>
Sets the temperature unit
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Commands
Table 4 lists the commands in alphabetical order. In this section the commands are
arranged into the following groups:
Alarm Commands - commands for alarm settings. alarm commands
Measurement Commands - commands for reading measurement data.
Data Commands –commands for setting and reading data information
Measurement Control Commands – commands for the timing and action of the
measurement process.
Channel Commands - commands for selecting channels.
Calibration Commands - commands for calibration settings.
System Commands - commands for general system configuration parameters.
Communication Interface Commands - commands for controlling the interface
configuration (serial and IR ports).
Date and Time Commands - commands for setting the date, time and the date and time
formats.
Password Commands - commands for enabling and disabling the password, for setting
the password, and for checking the password protection state.
Status Commands - commands to report the status and condition of the instrument.
Each section provides the command structure (long and short format), a description of the
command purpose, a command example, an example of what the command returns (as
applicable to query commands), and notes specific to the command. The following apply
to each group of commands:
•
Upper case letters designate syntax that is required when issuing the command.
Lower case letters are optional and may be omitted.
•
•
•
•
•
•
•
•
<>indicates a required parameter.
[] indicates an optional parameter.
() indicates a group of parameters that must be used together.
‘|’ indicates alternate parameter values.
<str> indicates a string of ASCII characters is required.
<chn> indicates a channel number is required.
<num> indicates an integer value is required.
<bool> indicates a boolean value (0 or 1) is required. The mnemonics OFF and
ON are also accepted for 0 and 1, respectively.
•
•
•
•
•
•
•
<unit> indicates a temperature unit (C or F) is required.
<float> indicates a floating point value is required.
<pass> indicates a four digit numeric password is required.
<port> indicates a port number is required.
<year> indicates a four digit number for the year is required.
<month> indicates a one or two digit number for the month is required.
<day> indicates a one or two digit number for the day is required.
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Digital Communications Interface
Commands
6
•
•
•
•
•
<hour> indicates a one or two digit number for the hour (0 to 23) is required.
<minute> indicates a one or two digit number for the minute is required.
<second> indicates a one or two digit number for the second is required.
<baud> indicates a valid baud rate setting is required.
For query commands, specifying the MIN, MAX, or DEF parameter causes the
instrument to respond with the minimum, maximum, or default setting
respectively.
•
•
For set commands, specifying the MIN, MAX, or DEF parameters causes the
instrument to use the minimum, maximum, or default setting respectively.
Unrecognized commands or commands with incorrect syntax or invalid
parameters generate error messages that are placed in the error queue (see
SYST:ERR?).
Alarm Commands
ALARm:BATTery?
Indicates whether a battery alarm event has occurred.
Example: ALAR:BATT?
Response: 1
A value of 1 is returned if a battery alarm event has occurred. A value of 0 is returned if a
battery alarm event has not occurred.
ALARm:BATTery:ENABle?
Returns the state of the battery alarm enable.
Example: ALAR:BATT:ENAB?
Response: 0
A value of 1 is returned if the battery alarm is enabled. A value of 0 is returned if the
battery alarm is disabled.
ALARm:BATTery:ENABle <bool>
Sets the state of the battery alarm enable.
Example: ALAR:BATT:ENAB 1
The <bool> parameter turns the battery alarm enable on (1 or ON) or off (0 or OFF). This
command may be password protected (see Password Commands).
ALARm:BEEP?
Returns the state of the audible alarm enable.
Example: ALAR:BEEP?
Response: 0
A value of 1 is returned if the alarm beep is enabled. A value of 0 is returned if the alarm
beep is disabled.
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ALARm:BEEP <bool>
Sets the state of the audible alarm enable.
Example: ALAR:BEEP 1
The <bool> parameter turns the alarm beep enable on (1 or ON) or off (0 or OFF). This
command may be password protected (see Password Commands).
ALARm:CLEar
Clears the alarm events.
Example: ALAR:CLE
The alarm clear command clears the alarm events.
ALARm:DATE:FIRSt?
Returns the date of the first alarm event.
Example: ALAR:DATE:FIRS?
Response: 2003,8,10
The response is returned in the format, <year>,<month>,<day>.
If no alarm has been triggered, the response is: 2000,0,0.
ALARm:DATE:LAST?
Returns the date of the last alarm event.
Example: ALAR:DATE:LAST?
Response: 2003,8,10
The response is returned in the format, <year>,<month>,<day>.
If no alarm has been triggered, the response is: 2000,0,0.
ALARm:DISPlay?
Returns the state of the visible alarm enable.
Example: ALAR:DISP?
Response: 0
A value of 1 is returned if the alarm display is enabled. A value of 0 is returned if the
alarm display is disabled.
ALARm:DISPlay <bool>
Sets the state of the visible alarm enable.
Example: ALAR:DISP 1
The <bool> parameter turns the alarm display enable on (1 or ON) or off (0 or OFF).
This command may be password protected (see Password Commands).
ALARm:POWer?
Indicates whether a power loss alarm event has occurred.
Example: ALAR:POW?
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Response: 0
A value of 1 is returned if a power loss alarm event has occurred. A value of 0 is returned
if a power loss alarm event has not occurred.
ALARm:POWer:ENABle?
Returns the state of the power loss alarm enable.
Example: ALAR:POW:ENAB?
Response: 0
A value of 1 is returned if the power loss alarm is enabled. A value of 0 is returned if the
power loss alarm is disabled.
ALARm:POWer:ENABle <bool>
Sets the state of the power loss alarm enable.
Example: ALAR:POW:ENAB 1
The <bool> parameter turns the power loss alarm on (1 or ON) or off (0 or OFF). This
command may be password protected (see Password Commands).
ALARm:RHUMidity<chn>:LOWer?
Indicates whether a lower humidity alarm event has occurred for the specified channel.
Example: ALAR:RHUM1:LOW?
Response: 0
The RHUMidity suffix, <chn>, specifies the channel (1 or 2). A value of 1 is returned if a
lower humidity alarm event has occurred on the specified channel. A value of 0 is
returned if a lower humidity alarm event has not occurred on the specified channel.
ALARm:RHUMidity<chn>:LOWer:ENABle?
Returns the state of the lower humidity alarm enable for the specified channel.
Example: ALAR:RHUM1:LOW:ENAB?
Response: 0
The RHUMidity suffix, <chn>, specifies the channel (1 or 2). A value of 1 is returned if
the lower humidity alarm is enabled. A value of 0 is returned if the lower humidity alarm
is disabled.
ALARm:RHUMidity<chn>:LOWer:ENABle <bool>
Sets the state of the lower humidity alarm enable for the specified channel.
Example: ALAR:RHUM1:LOW:ENAB 1
The RHUMidity suffix, <chn>, specifies the channel (1 or 2). The <bool> parameter
turns the lower humidity alarm enable on (1 or ON) or off (0 or OFF). This command
may be password protected (see Password Commands).
ALARm:RHUMidity<chn>:LOWer:LIMit? [MIN|MAX|DEF]
Returns the lower humidity alarm limit for the specified channel in %RH.
Example: ALAR:RHUM1:LOW:LIM?
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Response: 20.00
The RHUMidity suffix, <chn>, specifies the channel (1 or 2). Specifying the MIN, MAX,
or DEF parameter returns the minimum, maximum, or default value respectively.
ALARm:RHUMidity<chn>:LOWer:LIMit <float>|MIN|MAX|DEF
Sets the lower humidity alarm limit for the specified channel in %RH.
Example: ALAR:RHUM1:LOW:LIM 25.00
The RHUMidity suffix, <chn>, specifies the channel (1 or 2). The <float> parameter
specifies the value for the lower humidity alarm limit. Specifying the MIN, MAX, or
DEF parameter sets the lower humidity alarm limit to the minimum, maximum, or default
value respectively. This command may be password protected (see Password
Commands).
ALARm:RHUMidity<chn>:RATE?
Indicates whether a humidity rate alarm event has occurred for the specified channel.
Example: ALAR:RHUM1:RATE?
Response: 1
The RHUMidity suffix, <chn>, specifies the channel (1 or 2). A value of 1 is returned if a
humidity rate alarm event has occurred on the specified channel. A value of 0 is returned
if a humidity rate alarm event has not occurred on the specified channel.
ALARm:RHUMidity<chn>:RATE:ENABle?
Returns the state of the humidity rate alarm enable for the specified channel.
Example: ALAR:RHUM1:RATE:ENAB?
Response: 0
The RHUMidity suffix, <chn>, specifies the channel (1 or 2). A value of 1 is returned if
the humidity rate alarm is enabled. A value of 0 is returned if the humidity rate alarm is
disabled.
ALARm:RHUMidity<chn>:RATE:ENABle <bool>
Sets the state of the humidity rate alarm enable for the specified channel.
Example: ALAR:RHUM1:RATE:ENAB 1
The RHUMidity suffix, <chn>, specifies the channel (1 or 2). The <bool> parameter
turns the humidity rate alarm enable on (1 or ON) or off (0 or OFF). This command may
be password protected (see Password Commands).
ALARm:RHUMidity<chn>:RATE:LIMit? [MIN|MAX|DEF]
Returns the humidity rate alarm limit for the specified channel in %RH per hour.
Example: ALAR:RHUM1:RATE:LIM?
Response: 5
The RHUMidity suffix, <chn>, specifies the channel (1 or 2). Specifying the MIN, MAX,
or DEF parameter returns the minimum, maximum, or default value respectively.
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ALARm:RHUMidity<chn>:RATE:LIMit <float>|MIN|MAX|DEF
Sets the humidity rate alarm limit for the specified channel in %RH per hour.
Example: ALAR:RHUM1:RATE:LIM 1
The RHUMidity suffix, <chn>, specifies the channel (1 or 2). The <float> parameter
specifies the value for the humidity rate alarm limit. Specifying the MIN, MAX, or DEF
parameter sets the humidity rate alarm limit to the minimum, maximum, or default value
respectively. This command may be password protected (see Password Commands).
ALARm:RHUMidity<chn>:SENSor?
Indicates whether a humidity sensor alarm event has occurred for the specified channel.
Example: ALAR:RHUM1:SENS?
Response: 1
The RHUMidity suffix, <chn>, specifies the channel (1 or 2). A value of 1 is returned if a
humidity sensor alarm event has occurred on the specified channel. A value of 0 is
returned if a humidity sensor alarm event has not occurred on the specified channel.
ALARm:RHUMidity<chn>:SENSor:ENABle?
Returns the state of the humidity sensor alarm enable for the specified channel.
Example: ALAR:RHUM1:SENS:ENAB?
Response: 0
The RHUMidity suffix, <chn>, specifies the channel (1 or 2). A value of 1 is returned if
the humidity sensor alarm is enabled. A value of 0 is returned if the humidity sensor
alarm is disabled.
ALARm:RHUMidity<chn>:SENSor:ENABle <bool>
Sets the state of the humidity sensor alarm for the specified channel.
Example: ALAR:RHUM1:SENS:ENAB 1
The RHUMidity suffix, <chn>, specifies the channel (1 or 2). The <bool> parameter
turns the humidity sensor alarm on (1 or ON) or off (0 or OFF). This command may be
password protected (see Password Commands).
ALARm:RHUMidity<chn>:UPPer?
Indicates whether an upper humidity alarm event has occurred for the specified channel.
Example: ALAR:RHUM1:UPP?
Response: 0
The RHUMidity suffix, <chn>, specifies the channel (1 or 2). A value of 1 is returned if
an upper humidity alarm event has occurred on the specified channel. A value of 0 is
returned if an upper humidity alarm event has not occurred on the specified channel.
ALARm:RHUMidity<chn>:UPPer:ENABle?
Returns the state of the upper humidity alarm enable for the specified channel.
Example: ALAR:RHUM1:UPP:ENAB?
Response: 0
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The RHUMidity suffix, <chn>, specifies the channel (1 or 2). A value of 1 is returned if
the upper humidity alarm is enabled. A value of 0 is returned if the upper humidity alarm
is disabled.
ALARm:RHUMidity<chn>:UPPer:ENABle <bool>
Sets the state of the upper humidity alarm enable for the specified channel.
Example: ALAR:RHUM1:UPP:ENAB 1
The RHUMidity suffix, <chn>, specifies the channel (1 or 2). The <bool> parameter
turns the upper humidity alarm on (1 or ON) or off (0 or OFF). This command may be
password protected (see Password Commands).
ALARm:RHUMidity<chn>:UPPer:LIMit? [MIN|MAX|DEF]
Returns the upper humidity alarm limit for the specified channel in %RH.
Example: ALAR:RHUM1:UPP:LIM?
Response: 70.00
The RHUMidity suffix, <chn>, specifies the channel (1 or 2). Specifying the MIN, MAX,
or DEF parameter returns the minimum, maximum, or default value respectively.
ALARm:RHUMidity<chn>:UPPer:LIMit <float>|MIN|MAX|DEF
Sets the upper humidity alarm limit for the specified channel in %RH.
Example: ALAR:RHUM1:UPP:LIM 65.00
The RHUMidity suffix, <chn>, specifies the channel (1 or 2). The <float> parameter
specifies the value for the upper humidity alarm limit. Specifying the MIN, MAX, or
DEF parameter sets the upper humidity alarm limit to the minimum, maximum, or default
value respectively. This command may be password protected (see Password
Commands).
ALARm:TEMPurature<chn>:LOWer?
Indicates whether a lower temperature alarm event has occurred for the specified channel.
Example: ALAR:TEMP1:LOW?
Response: 1
The TEMPerature suffix, <chn>, specifies the channel (1 or 2).A value of 1 is returned if
a lower temperature alarm event has occurred on the specified channel. A value of 0 is
returned if a lower temperature alarm event has not occurred on the specified channel.
ALARm:TEMPurature<chn>:LOWer:ENABle?
Returns the state of the lower temperature alarm enable for the specified channel.
Example: ALAR:TEMP1:LOW:ENAB?
Response: 0
The TEMPerature suffix, <chn>, specifies the channel (1 or 2). A value of 1 is returned if
the lower temperature alarm is enabled. A value of 0 is returned if the lower temperature
alarm is disabled.
ALARm:TEMPurature<chn>:LOWer:ENABle <bool>
Sets the state of the lower temperature alarm enable for the specified channel.
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Example: ALAR:TEMP1:LOW:ENAB 1
The TEMPerature suffix, <chn>, specifies the channel (1 or 2). The <bool> parameter
turns the lower temperature alarm on (1 or ON) or off (0 or OFF). This command may be
password protected (see Password Commands).
ALARm:TEMPurature<chn>:LOWer:LIMit? [MIN|MAX|DEF]
Returns the lower temperature alarm limit for the specified channel in degrees C or F.
Example: ALAR:TEMP1:LOW:LIM?
Response: 18.00
The TEMPerature suffix, <chn>, specifies the channel (1 or 2). The value returned is
always in the current temperature units (C or F). Specifying the MIN, MAX, or DEF
parameter returns the minimum, maximum, or default value respectively.
ALARm:TEMPurature<chn>:LOWer:LIMit <float>|MIN|MAX|DEF
Sets the lower temperature alarm limit for the specified channel in degrees C or F.
Example: ALAR:TEMP1:LOW:LIM 20.00
The TEMPerature suffix, <chn>, specifies the channel (1 or 2). The <float> parameter
specifies the value for the lower temperature alarm limit. Specifying the MIN, MAX, or
DEF parameter sets the lower temperature alarm limit to the minimum, maximum, or
default value respectively. The <float> value is always in the current temperature units (C
or F). This command may be password protected (see Password Commands).
ALARm:TEMPurature<chn>:RATE?
Indicates whether a temperature rate alarm event has occurred.
Example: ALAR:TEMP1:RATE?
Response: 0
The TEMPerature suffix, <chn>, specifies the channel (1 or 2). A value of 1 is returned if
a temperature rate alarm event has occurred on the specified channel. A value of 0 is
returned if a temperature rate alarm event has not occurred on the specified channel.
ALARm:TEMPurature<chn>:RATE:ENABle?
Returns the state of the temperature rate alarm enable for the specified channel.
Example: ALAR:TEMP1:RATE:ENAB?
Response: 0
The TEMPerature suffix, <chn>, specifies the channel (1 or 2). A value of 1 is returned if
the temperature rate alarm is enabled. A value of 0 is returned if the temperature rate
alarm is disabled.
ALARm:TEMPurature<chn>:RATE:ENABle <bool>
Sets the state of the temperature rate alarm enable for the specified channel.
Example: ALAR:TEMP1:RATE:ENAB 1
The TEMPerature suffix, <chn>, specifies the channel (1 or 2). The <bool> parameter
turns the temperature rate alarm on (1 or ON) or off (0 or OFF). This command may be
password protected (see Password Commands).
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ALARm:TEMPurature<chn>:RATE:LIMit? [MIN|MAX|DEF]
Returns the temperature rate alarm limit for the specified channel in degrees (C or F) per
hour.
Example: ALAR:TEMP1:RATE:LIM?
Response: 5
The TEMPerature suffix, <chn>, specifies the channel (1 or 2). The value returned is
always in the current temperature units (C or F). Specifying the MIN, MAX, or DEF
parameter returns the minimum, maximum, or default value respectively.
ALARm:TEMPurature<chn>:RATE:LIMit <float>|MIN|MAX|DEF
Sets the temperature rate alarm limit for the specified channel in degrees (C or F) per
hour.
Example: ALAR:TEMP1:RATE:LIM 10.00
The TEMPerature suffix, <chn>, specifies the channel (1 or 2). The <float> parameter
specifies the value for the temperature rate alarm limit. The <float> value is always in the
current temperature units (C or F). Specifying MIN, MAX, or DEF parameter sets the
temperature rate alarm limit to the minimum, maximum, or default value respectively.
This command may be password protected (see Password Commands).
ALARm:TEMPurature<chn>:SENSor?
Indicates whether a temperature sensor alarm event has occurred for the specified
channel.
Example: ALAR:TEMP1:SENS?
Response: 0
The TEMPerature suffix, <chn>, specifies the channel (1 or 2). A value of 1 is returned if
a temperature sensor alarm event has occurred on the specified channel. A value of 0 is
returned if a temperature sensor alarm event has not occurred on the specified channel.
ALARm:TEMPurature<chn>:SENSor:ENABle?
Returns the state of the temperature sensor alarm enable for the specified channel.
Example: ALAR:TEMP1:SENS:ENAB?
Response: 0
The TEMPerature suffix, <chn>, specifies the channel (1 or 2). A value of 1 is returned if
the temperature sensor alarm is enabled. A value of 0 is returned if the temperature sensor
alarm is disabled.
ALARm:TEMPurature<chn>:SENSor:ENABle <bool>
Sets the state of the temperature sensor alarm enable for the specified channel.
Example: ALAR:TEMP1:SENS:ENAB 1
The TEMPerature suffix, <chn>, specifies the channel (1 or 2). The <bool> parameter
turns the temperature sensor alarm on (1 or ON) or off (0 or OFF). This command may be
password protected (see Password Commands).
ALARm:TEMPurature<chn>:UPPer?
Indicates whether an upper temperature alarm event has occurred.
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Example: ALAR:TEMP1:UPP?
Response: 0
The TEMPerature suffix, <chn>, specifies the channel (1 or 2). A value of 1 is returned if
an upper temperature alarm event has occurred on the specified channel. A value of 0 is
returned if an upper temperature alarm event has not occurred on the specified channel.
ALARm:TEMPurature<chn>:UPPer:ENABle?
Returns the state of the upper temperature alarm enable for the specified channel.
Example: ALAR:TEMP1:UPP:ENAB?
Response: 0
The TEMPerature suffix, <chn>, specifies the channel (1 or 2). A value of 1 is returned if
the upper temperature alarm is enabled. A value of 0 is returned if the upper temperature
alarm is disabled.
ALARm:TEMPurature<chn>:UPPer:ENABle <bool>
Sets the state of the upper temperature alarm enable for the specified channel.
Example: ALAR:TEMP1:UPP:ENAB 1
The TEMPerature suffix, <chn>, specifies the channel (1 or 2). The <bool> parameter
turns the upper temperature alarm on (1 or ON) or off (0 or OFF). This command may be
password protected (see Password Commands).
ALARm:TEMPurature<chn>:UPPer:LIMit? [MIN|MAX|DEF]
Returns the upper temperature alarm limit for the specified channel in degrees C or F.
Example: ALAR:TEMP1:UPP:LIM?
Response: 28.00
The TEMPerature suffix, <chn>, specifies the channel (1 or 2). The value returned is
always in the current temperature units (C or F). Specifying the MIN, MAX, or DEF
parameter returns the minimum, maximum, or default value respectively.
ALARm:TEMPurature<chn>:UPPer:LIMit <float>|MIN|MAX|DEF
Sets the upper temperature alarm limit for the specified channel in degrees C or F.
Example: ALAR:TEMP1:UPP:LIM 26.00
The TEMPerature suffix, <chn>, specifies the channel (1 or 2). The <float> parameter
specifies the value for the upper temperature alarm limit. The <float> value is always in
the current temperature units (C or F). Specifying the MIN, MAX, or DEF parameter sets
the upper temperature alarm limit to the minimum, maximum, or default value
respectively. This command may be password protected (see Password Commands).
ALARm:TIME:FIRSt?
Returns the time of the first alarm event.
Example: ALAR:TIME:FIRS?
Response: 15,43,13
The response is returned in the format, <hour>,<minute>,<second>.
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ALARm:TIME:LAST?
Returns the time of the last alarm event.
Example: ALAR:TIME:LAST?
Response: 15,43,19
The response is returned in the format, <hour>,<minute>,<second>.
Measurement Commands
The measurement commands are used to read information on the statistical calculations
and for reading the most recent measurement for a specified channel.
CALCulate:AVERage:CLEar
Resets all running statistics for both channels.
Example: CALC1:AVER:CLE
This command may be password protected (see Password Commands).
CALCulate<chn>:DEWPoint?
Returns the dewpoint measurement on the specified channel in degrees C or F.
Example: CALC1:DEWP?
Response: 3.5
The CALCulate suffix, <chn>, specifies the channel (1 or 2). The value returned is
always in the current temperature units (C or F).
CALCulate<chn>:HINDex?
Returns the heat index calculation for the specified channel in degrees C or F.
Example: CALC1:HIND?
Response: 28.4
The CALCulate suffix, <chn>, specifies the channel (1 or 2). The value returned is
always in the current temperature units (C or F).
CALCulate<chn>:PARameter<num>:AVERage<type>?
Returns the specified statistical calculation for the specified channel.
Example: CALC1:PAR1:AVER4?
Response: 25.186
The CALCulate suffix, <chn>, specifies the channel (1 or 2). The PARamenter suffix,
<num>, specifies temperature (1) or relative humidity (2). The AVERage suffix, <type>,
specifies the statistic: average (1), standard deviation (2), minimum (3), maximum (4),
spread (5), maximum rate (7), or alarm count (8). Temperature values are in the current
temperature unit, C of F.
CALCulate[<chn>]:PARameter[<num>]:AVERage[<type>]:CLEar
Resets all of the running statistics for both channels.
This is the same as the CALCulate:AVERage:CLEar command.
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CALCulate[<chn>]:PARameter[<num>]:AVERage[<type>]:DATA?
Returns the specified statistical calculation for the specified channel.
This is the same as the CALCulate,chn.:PARameter<num>:AVERage<type>? command
(see ).
CALCulate[<chn>]:PARameter<num>:AVERage<type>:TYPE?
Returns the name of the specified statistical type for the specified channel.
Example: CALC1:PAR1:AVER4:TYPE?
Response: “T MAX”
The CALCulate suffix, <chn>, specifies the channel (1 or 2). The PARamenter suffix,
<num>, specifies temperature (1) or relative humidity (2). The AVERage suffix, <type>,
specifies the statistic: average (1), standard deviation (2), minimum (3), maximum (4),
spread (5), maximum rate (7), or alarm count (8). Temperature values are in the current
temperature unit, C of F.
CALCulate<chn>:PARameter<num>:RATE?
Returns the rate calculation for the specified channel in degrees C or F per hour for
temperature or % per hour for relative humidity.
Example: CALC1:PAR1:RATE?
Response: -0.74
The CALCulate suffix, <chn>, specifies the channel (1 or 2). The PARameter suffix,
<num>, specifies temperature (1) or relative humidity (2).
CALCulate[<chn>]:PARameter[<num>]:RATE:TIME? [MIN|MAX|DEF]
Returns the rate time span in seconds.
Example: CALC:PAR:RATE:TIME?
Response: 300
Specifying the MIN, MAX, or DEF parameter returns the minimum, maximum, or
default value respectively.
CALCulate[<chn>]:PARameter[<num>]:RATE:TIME <num>|MIN|MAX|DEF
Sets the rate time span for the specified channel in seconds.
Example: CALC:PAR:RATE:TIME 600
Specifying MIN, MAX, or DEF parameter sets the rate time span to the minimum,
maximum, or default value respectively. This command may be password protected (see
Password Commands).
CALCulate[<chn>]:PARameter<num>:RESolution? [MIN|MAX|DEF]
Returns the display resolution.
Example: CALC:PAR1:RES?
Response: 3
The PARameter suffix, <num>, specifies either temperature resoution (1) or relative
humidity resolution (2). The value returned indicates the number of decimal places.
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Specifying the MIN, MAX, or DEF parameter returns the minimum, maximum, or
default value respectively.
CALCulate[<chn>]:PARameter<num>:RESolution <num>|MIN|MAX|DEF
Sets the display resolution.
Example: CALC:PAR2:RES 2
The PARameter suffix, <num>, specifies either temperature resolution (1) or relative
humidity resolution (2). The <num> parameter specifies the number of decimal places to
use. Specifying the MIN, MAX, or DEF parameter sets the display resolution to the
minimum, maximum, or default value respectively. This command may be password
protected (see Password Commands).
FETCh? [<chn>]
Returns a comma-delimited list of the most recent measurements for the specified
channel or for both channels.
Example 1: FETC? 1
Response: 25.576,29.30
or
Response: 1,1,25.629,C,29.32,%,2003,9,16,11,2,38
Example 2: FETC?
Response: 25.582,29.32,26.341,37.96
or
Response: 1,1,25.629,C,29.29,%,2,0,C,0,%,2003,9,16,11,1,42
The <chn> parameter is optional and specifies the channel (1 or 2). If the <chn>
parameter is omitted, the most recent measurements on both channels are returned. If a
channel is disabled or no sensor is connected, the measurement values returned for that
channel are 0. This command does not affect the measurement action.
If the extended format setting is OFF (see FORMat:TDST:STAT), the measurement
values are returned in a comma-delimited format as follows:
<Ch1Temp>,<Ch1Humid>[,<Ch2Temp>,<Ch2Humid>]
The temperature values are always in the current temperature units. The humidity values
are always in %RH.
If the extended format setting is ON, the measurements are returned in a comma-
delimited format as follows:
<MeasStatus>,<ChX>,<ChXTemp>,<TempUnits>,<ChXHumid>,%[,<ChY>,<ChYTem
p>,<TempUnits>,<ChYHumid>,%],<year>,<month>,<day>,<hour>,<minute>,<second>
The measure status (<MeasStatus>) is 0 if these measurement values have been read
previously or 1 if these are new measurement values. If no channel number was specified,
the measurements on both channels are returned (X = 1; Y = 2). Otherwise, only the
measurements on the specified channel are returned. If only new readings are desired, the
FORM:TDST:STAT command can be used to enable the extended format option and any
readings in which the value of the first field is 0 can be ignored.
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FORMat:TDST:STATe?
Returns the time and date stamp enable for the FETC?, MEAS?, and READ? commands.
Example: FORM:TDST:STAT?
Response: 0
A value of 1 is returned if the time and date stamp is enabled. A value of 0 is returned if
the time and date stamp is disabled.
FORMat:TDST:STATe <bool>
Sets the time and date stamp enable for the FETC?, MEAS?, and READ? commands.
Example: FORM:TDST:STAT 1
The <bool> parameter turns the time and date stamp enable on (1 or ON) or off (0 or
OFF).
MEASure? [<chn>]
Returns a comma delimited list of the most recent measurements for the specified
channel or for both channels.
Example: MEAS? 1
Example 1: MEAS? 1
Response: 25.576,29.30
or
Response: 1,1,25.629,C,29.32,%,2003,9,16,11,2,38
Example 2: MEAS?
Response: 25.582,29.32,26.341,37.96
or
Response: 1,1,25.629,C,29.29,%,2,0,C,0,%,2003,9,16,11,1,42
This command is equivalent to the FETC? command.
READ? [<chn>]
Returns a comma delimited list of the most recent measurements for the specified
channel or for both channels.
Example 1: READ? 1
Response: 25.576,29.30
or
Response: 1,1,25.629,C,29.32,%,2003,9,16,11,2,38
Example 2: READ?
Response: 25.582,29.32,26.341,37.96
or
Response: 1,1,25.629,C,29.29,%,2,0,C,0,%,2003,9,16,11,1,42
This command is equivalent to the FETC? command.
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Data Commands
The data commands are used to access daily statistics or recorded measurements.
DATa:DSTatistics:ENABle?
Returns the state of the daily statistics recording enable.
Example: DAT:DST:ENAB?
Response: 0
A value of 1 is returned if the daily statistics recording is enabled. A value of 0 is
returned if the daily statistics recording is disabled.
DATa:DSTatistics:ENABle <bool>
Sets the state of the daily statistics recording.
Example: DAT:DST:ENAB 1
The <bool> parameter turns the daily statistics recording on (1 or ON) or off (0 or OFF).
This command may be password protected (see Password Commands).
DATa:DSTatistics:HOUR? [MIN|MAX|DEF]
Returns the daily statistics recording time.
Example: DAT:DST:HOUR?
Response: 12
Specifying the MIN, MAX, or DEF parameter returns the minimum, maximum, or
default value respectively.
DATa:DSTatistics:HOUR <num>|MIN|MAX|DEF
Sets the state of the daily statistics recording time.
Example: DAT:DST:HOUR 1
The <num> parameter specifies the hour for the daily statistics recording time.
Specifying MIN, MAX, or DEF parameter sets the daily statistics recording time to the
minimum, maximum, or default value respectively. This command may be password
protected (see Password Commands).
DATa:DSTatistics:RENable?
Returns the state of the daily statistics reset enable.
Example: DAT:DST:REN?
Response: 0
A value of 1 is returned if the daily statistics reset is enabled. A value of 0 is returned if
the daily statistics reset is disabled.
DATa:DSTatistics:RENable <bool>
Sets the state of the daily statistics reset enable.
Example: DAT:DST:REN 1
The <bool> parameter turns the daily statistics reset on (1 or ON) or off (0 or OFF). This
command may be password protected (see Password Commands).
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6
DATa:DSTatistics:RHOur? [MIN|MAX|DEF]
Returns the daily statistics reset time.
Example: DAT:DST:RHO?
Response: 12
Specifying the MIN, MAX, or DEF parameter returns the minimum, maximum, or
default value respectively.
DATa:DSTatistics:RHOur <num>|MIN|MAX|DEF
Sets the daily statistics reset time.
Example: DAT:DST:RHO 0
The <num> parameter specifies the hour for the daily statistics reset time. Specifying
MIN, MAX, or DEF parameter sets the daily statistics reset time to the minimum,
maximum, or default value respectively. This command may be password protected (see
Password Commands).
DATa:DSTatistics:RECord:BTIMe? [<num>]
Returns the reset time for a daily statistics set.
Example: DAT:DST:REC:BTIM?
Response: 0,0,0
The <num> parameter specifies the daily statistics record number. If none is specified
then record 1 is assumed. The response is returned in the format,
<hour>,<minute>,<second>.
DATa:DSTatistics:RECord:CLEar
Clears all daily statistics records.
Example: DAT:DST:REC:CLE
This command may be password protected (see Password Commands).
DATa:DSTatistics:RECord:COUNt? [<MAX>]
Returns the daily statistics record count.
Example: DAT:DST:REC:COUN?
Response: 64
Specifying the MAX parameter returns the maximum number of daily statistics records
than can be held in memory.
DATa:DSTatistics:RECord:DATE? [<num>]
Returns the daily statistics recording date.
Example: DAT:DST:REC:DATE?
Response: 2003,9,12
The <num> parameter specifies the daily statistics record number. If none is specified,
record 1 is assumed. The response is returned in the format, <year>,<month>,<day>.
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DATa:DSTatistics:RECord:ETIMe? [<num>]
Returns the daily statistics recording end time.
Example: DAT:DST:REC:ETIM?
Response: 23,59,59
The <num> parameter specifies the daily statistics record number. If none is specified,
record 1 is assumed. The response is returned in the format, <hour>,<minute>,<second>.
DATa:DSTatistics:RECord:FIND? (<year>,<month>,<day>)
Returns the daily statistics record number for the given date.
Example: DAT:DST:REC:FIND? 2003,9,13
Response: 25
If no daily statistics were recorded for the given date a 0 is returned.
DATa:DSTatistics:RECord:VALue? <num>,<chn>,<type>
Returns the daily statistics statistical calculation.
Example: DAT:DST:REC:VAL? 1,1,1
Response: 25.559,0.733,23.097,27.203,4.106,43200,17.16,0
The <num> parameter specifies the daily statistics record number. The <chn> parameter
specifies the channel (1 or 2). The <type> parameter specifies the statistic: average (1),
standard deviation (2), minimum (3), maximum (4), spread (5), maximum rate (7), or
alarm count (8). Temperature values are in the current temperature unit, C of F.
DATa:RECord:CLEar
Clears all recorded measurement data.
Example: DAT:REC:CLE
This command is password protected. To access this command when the
SYST:PASS:REC is enabled, the password must be successfully entered using the
SYST:PASS:CEN <pass> command (see Password Commands).
DATa:RECord:FEED:RHUMidity<chn>?
Returns the state of the humidity recording enable for the specified channel.
Example: DAT:REC:FEED:RHUM1?
Response: 1
The RHUMidity suffix <chn>, specifies the channel (1 or 2). A value of 1 is returned if
the humidity recording for the specified channel is enabled. A value of 0 is returned if the
humidity recording for the specified channel is disabled.
DATa:RECord:FEED:RHUMidity<chn> <bool>
Sets the state of the humidity recording enable for the specified channel.
Example: DAT:REC:FEED:RHUM1 0
The RHUMidity suffix <chn>, specifies the channel (1 or 2). The <bool> parameter turns
the humidity recording for the specified channel on (1 or ON) or off (0 or OFF). This
command may be password protected (see Password Commands).
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Digital Communications Interface
Commands
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DATa:RECord:FEED:TEMPerature<chn>?
Returns the state of the temperature recording enable for the specified channel.
Example: DAT:REC:FEED:TEMP1?
Response: 1
The TEMPerature suffix <chn>, specifies the channel (1 or 2). A value of 1 is returned if
temperature recording for the specified channel is enabled. A value of 0 is returned if
temperature recording for the specified channel is disabled.
DATa:RECord:FEED:TEMPerature<num> <bool>
Sets the state of the temperature recording enable for the specified channel.
Example: DAT:REC:FEED:TEMP1 0
The TEMPerature suffix <chn>, specifies the channel (1 or 2). The <bool> parameter
turns temperature recording for the specified channel on (1 or ON) or off (0 or OFF).
This command may be password protected (see Password Commands).
DATa:RECord:FREE?
Returns the recording memory usage.
Example: DAT:REC:FREE?
Response: 3282, 449070
The response indicates the number of bytes remaining and the number of bytes used,
separated by a comma.
DATa:RECord:OPEN?
Returns the number of bytes of memory in the open set of data.
Example: DAT:REC:OPEN?
Response: 1203
This command must be preceeded by the DATa:REC:OPEN command which is used to
open a set of data using a date/time range. The response to this command indicates the
number of unread bytes in the date/time range specified by the last DATa:RECord:OPEN
command. If the response is 0, there are no readings stored in memory over the specified
date/time range. Use the DATa:RECord:READ? command to read the data from
memory.
DATa:RECord:OPEN
[(<year>,<month>,<day>,<hour>,<minute>,<second>)[,(<year>,<month>,<day>,<hour>,
<minute>,<second>)]]
Opens a set of data in memory over the specified date/time range for reading.
Example: DAT:REC:OPEN 2003,9,15,0,0,0,2003,9,15,23,59,59
The first set of <year>, <month>, <day>, <hour>, <minute>, and <second> parameters
indicate the “from” date and time of the block to open. This set of parameters is optional,
but if specified, all parameters are required. If not specified, all data in memory is opened
for reading. The second set of <year>, <month>, <day>, <hour>, <minute>, and
<second> parameters may only be specified if the first set are specified, and indicate the
“to” date and time of the block to open. This set of parameters is optional, but if
specified, all parameters are required. If not specified, the “to” date and time default to
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the current date and time. If not specified, the actual time/date range of the data will
likely include more data than requested because fo the sizes of the data blocks in
memory. Use this command in conjunction with the DATa:RECord:OPEN? and
DATa:RECord:READ? commands to extract data from memory.
DATa:RECord:READ? [<num>]
Reads a block of data from memory.
Example: DAT:REC:READ?
Response: <bytes>,#11<binary data>
The <num> parameter is optional and defines the group size (number of bytes) to read
from memory. If not specified, 256 bytes is used as the default group size. The response
to this command consists of the number of bytes of data in this response (<bytes>),
followed by a marker (#11), followed by a string of binary data (<binary data>). The
number of bytes in the <binary data> portion of the response may be anywhere between 1
and <num> bytes (256 if <num> is not specified). Use the DATa:RECord:OPEN?
command to determine the exact number of bytes in the open set of data.
DATa:RECord:TIME? [MIN|MAX|DEF]
Returns the data recording period in seconds.
Example: DAT:REC:TIME?
Response: 120
Specifying the MIN, MAX, or DEF parameter returns the minimum, maximum, or
default value respectively.
DATa:RECord:TIME <num>|MIN|MAX|DEF
Sets the data recording period setting in seconds.
Example: DAT:REC:TIME 60
The <num> parameter indicates the number of seconds between recording readings to
memory. Specifying the MIN, MAX, or DEF parameter sets the data recording period to
the minimum, maximum, or default value respectively. This command may be password
protected (see Password Commands).
Measurement Control Commands
The measurement control commands are used to access settings related to the sensors and
the measurement activities.
INITiate
Provided for compatibility but has no effect.
INITiate:CONTinuous?
Returns the continuous state, which is always 1.
Example: INIT:CONT?
Response: 1
SENSor:AVERage?
Returns the measurement average setting.
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Commands
6
Example: SENS:AVER?
Response: 1
A value of 1 is returned if the measurement averaging is enabled. A value of 0 is returned
if the measurement averaging is disabled.
SENSor:AVERage <bool>
Sets the measurement average setting.
Example: SENS:AVER 1
The <bool> parameter turns the measurement averaging on (1 or ON) or off (0 or OFF).
This command may be password protected (see Password Commands).
SENSor<chn>:LOCK?
Returns the sensor lock state for the given channel number.
Example: SENS1:LOCK?
Response: 1
A value of 1 is returned if the sensor lock is enabled. A value of 0 is returned if the sensor
lock is disabled.
SENSor<chn>:LOCK <bool>
Sets the sensor lock for the specified channel.
Example: SENS1:LOCK 1
The <bool> parameter turns the sensor lock on (1 or ON) or off (0 or OFF).
This command is password protected. To access this command when the
SYST:PASS:SENS is enabled, the password must be successfully entered using the
SYST:PASS:CEN <pass> command (see Password Commands).
SENSor<chn>:IDENtification?
Returns the sensor identification for the specified channel.
Example: SENS1:IDEN?
Response: “LABORATORY”
The SENSor suffix, <chn>, specifies the channel (1 or 2). The response to this command
is enclosed in double quotes and indicates the current ID string for the sensor on the
specified channel.
SENSor<chn>:IDENentification <str>
Sets the sensor identification for the specified channel.
Example: SENS1:IDEN CHAMBER3
The SENSor suffix, <chn>, specifies the channel (1 or 2). The sensor identification field
is set to the value indicated by <str>. The sensor identification can be up to 16 characters
in length and consist of any combination of numbers, letters, underscores, and spaces.
This command may be password protected (see Password Commands)
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SENSor<chn>:STATe?
Returns the sensor status for the specified channel.
Example: SENS1:STAT?
Response: 0
The SENSor suffix, <chn>, specifies the channel (1 or 2). The response to this command
is a number that indicates the state of the sensor on the specified channel. A value of 0
indicates a sensor is connected and reading properly. The table below details all other
possible values. Note that the response may indicate more than one of the following
conditions.
Bit
0
Value Definition
1
Sensor not attached
1
2
Sensor read error
2
4
Sensor checksum error
3
4
5
6
8
Sensor calibration parameter error
Sensor calibration date error
Invalid sensor ID
Invalid sensor serial number
Sensor lock is enabled and the wrong
sensor is connected
16
32
64
128
7
TRIGger:TIMer? [MIN|MAX|DEF]
Returns the measurement period setting in seconds.
Example: TRIG:TIM?
Response: 1
Specifying the MIN, MAX, or DEF parameter returns the minimum, maximum, or
default value respectively.
TRIGger:TIMer <num>|MIN|MAX|DEF
Sets the measurement period setting in seconds.
Example: TRIG:TIM 30
The <num> parameter can be one of the following values: 1, 2, 5, 10, 15, 30, 60, 120,
300, 600, 900, 1200, 1800 or 3600. If a value other than one listed here is used, the
instrument automatically selects the nearest acceptable value that is less than the value
entered. Values greater than 3600 or less than 1 are ignored and cause a -222, “Data out
of range” error. Specifying the MIN, MAX, or DEF parameter sets the measurement
interval timer to the minimum, maximum, or default value respectively. The *RST
command sets the measurement period to 2 seconds. This command may be password
protected (see Password Commands).
Channel Commands
The channel commands are used for switching channels on and off.
ROUTe:CLOSe? <chn>
Returns the state of the specified channel.
Example: ROUT:CLOS? 1
Response: 0
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Digital Communications Interface
Commands
6
The <chn> parameter specifies the channel (1 or 2). A value of 1 is returned if the
specified channel is on. A value of 0 is returned if the specified channel is off.
ROUTe:CLOSe <chn>
Switches on the specified channel.
Example: ROUT:CLOS 1
The <chn> parameter specifies the channel (1 or 2) to switch on. This command may be
password protected (see Password Commands)
ROUTe:OPEN? <chn>
Returns the state of the specified channel.
Example: ROUT:OPEN? 1
Response: 0
The <chn> parameter specifies the channel (1 or 2). A value of 1 is returned if the
specified channel is off. A value of 0 is returned if the specified channel is on.
ROUTe:OPEN <chn>
Switches off the specified channel.
Example: ROUT:OPEN 1
The <chn> parameter specifies the channel (1 or 2) to switch off. This command may be
password protected (see Password Commands)
Calibration Commands
The calibration commands are used to access the sensor calibration parameters. The
calibration commands are always password protected.
CALibrate<chn>:ALERt?
Returns the state of the sensor calibration expired alert enable for the specified channel.
Example: CAL1:ALER?
Response: 0
The CALibrate suffix, <chn>, specifies the channel (1 or 2). A value of 1 is returned if
the calibration alert is enabled for the specified channel. A value of 0 is returned if the
calibration alert is disabled for the specified channel.
CALibrate<chn>:ALERt <bool>
Sets the state of the sensor alert enable for the specified channel.
Example: CAL1:ALER 1
The CALibrate suffix, <chn>, specifies the channel (1 or 2). The <bool> parameter turns
the sensor alert on (1 or ON) or off (0 or OFF). This command is password protected (see
Password Commands).
CALibrate<chn>:DATE:CALibrate?
Returns the sensor calibration date for the specified channel.
Example: CAL1:DATE:CAL?
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Response: 2003,9,17
The CALibrate suffix, <chn>, specifies the channel (1 or 2). The response is returned in
the format, <year>,<month>,<day>.
CALibrate<chn>:DATE:CALibrate (<year>,<month>,<day>)
Sets the sensor calibration date for the specified channel.
Example: CAL1:DATE:CAL 2003,9,17
The CALibrate suffix, <chn>, specifies the channel (1 or 2). The <year>, <month>, and
<day> parameters must all be specified. The <year> parameter is a four-digit number.
The <month> parameter is a one or two-digit number (1 to 12). The <day> parameter is a
one or two-digit number (1 to 31). This command is password protected (see Password
Commands).
CALibrate<chn>:DATE:DUE?
Returns the sensor calibration due date for the specified channel.
Example: CAL1:DATE:DUE?
Response: 2004,9,17
The CALibrate suffix, <chn>, specifies the channel (1 or 2). The response is returned in
the format, <year>,<month>,<day>.
CALibrate<chn>:DATE:DUE (<year>,<month>,<day>)
Sets the sensor calibration due date for the specified channel.
Example: CAL1:DATE:DUE 2004,9,17
The CALibrate suffix, <chn>, specifies the channel (1 or 2). The <year>, <month>, and
<day> parameters must all be specified. The <year> parameter is a four-digit number.
The <month> parameter is a one or two-digit number (1 to 12). The <day> parameter is a
one or two-digit number (1 to 31). This command is password protected (see Password
Commands).
CALibrate<chn>:EXPired?
Returns the sensor calibration expiration state for the specified channel.
Example: CAL1:EXP?
Response: 0
The CALibrate suffix, <chn>, specifies the channel (1 or 2). A value of 1 is returned if
the sensor calibration has expired. A value of 0 is returned if the sensor calibration has
not expired.
CALibrate<chn>:PARameter:OFFSet<num>?
Returns the sensor calibration offset parameter for the specified channel.
Example: CAL1:PAR:OFFS2?
Response: -0.210
The CALibrate suffix, <chn>, specifies the channel (1 or 2). The OFFSet suffix, <num>,
specifies either temperature (1) or humidity (2).
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CALibrate<chn>:PARameter:OFFSet<num> <float>
Sets the sensor calibration offset parameter for the specified channel.
Example: CAL1:PAR:OFFS2 -0.025
The CALibrate suffix, <chn>, specifies the channel (1 or 2). The OFFSet suffix, <num>,
specifies either temperature (1) or humidity (2). The <float> parameter specifies the value
for the offset parameter. This command is password protected (see Password
Commands).
CALibrate<chn>:PARameter:SCALe<num>?
Returns the sensor calibration scale parameter for the specified channel.
Example: CAL2:PAR:SCAL1?
Response: -0.564
The CALibrate suffix, <chn>, specifies the channel (1 or 2). The SCALe suffix, <num>,
specifies either temperature (1) or humidity (2).
CALibrate<chn>:PARameter:SCALe<num> <float>
Sets the sensor calibration scale parameter for the specified channel.
Example: CAL2:PAR:SCAL1 0.002
The CALibrate suffix, <chn>, specifies the channel (1 or 2). The SCALe suffix, <num>,
specifies either temperature (1) or humidity (2). The <float> parameter specifies the value
for the scale parameter. This command is password protected (see Password Commands).
System Commands
The system commands are used for querying instrument identification parameters,
temperature units, and for setting operating parameters to the defined default values.
*IDN?
Returns the instrument identification string that indicates the manufacturer, model
number, serial number, and firmware version.
Example: *IDN?
Response: FLUKE,5020A,A39001,1.00
*OPT?
Returns a list of sensor models currently connected to the inputs.
Example: *OPT?
Response: “5026A-S”,"0"
The model number of the sensor connected to input 1 is reported first. The model number
of the sensor connected to input 2 is reported second. If no sensor is connected to an
input, the model number is reported as “0". The sensor model numbers are enclosed in
quotes and separated by a comma.
*RST
Sets the instrument settings to defined conditions.
Example: *RST
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The following parameters are set when this command is issued.
•
•
•
•
•
Sets the measurement period to 2 seconds.
Sets the measurement averaging on.
Sets printing to the serial port
Sets the temperature units to C.
Sets the temperature resolution to 2 decimal places and the relative humidity
resolution to 1 decimal place.
•
•
Stops auto logging.
Sets the statistical functions.
SYSTem:BOOT:VERSion?
Returns the boot ROM version.
Example: SYST:BOOT:VERS?
Response: 0.31
SYSTem:ERRor?
Returns a message from the system error queue.
Example: SYST:ERR?
Response: 0,"No error"
The error queue may contain up to ten messages. The messages are reported in the order
they occurred. Reading a message from the queue removes the message so the next
message can be read. If more than ten errors occur before being read, the tenth error in
the queue is -350,"Queue overflow" and all but the first nine errors are discarded. All
errors cause the Error Bit (ERR, bit 2) for the Status BYTE Register to be set. Refer to
Troubleshooting for the error messages.
SYSTem:CODE:VERSion?
Returns the firmware version.
Example: SYST:CODE:VERS?
Response: 1.00
SYSTem:VERSion?
Returns the SCPI version number.
Example: SYST:VERS?
Response: 1994.0
UNIT:TEMPerature?
Returns the system temperature unit.
Example: UNIT:TEMP?
Response: C
The response is either C for Celsius or F for Fahrenheit.
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Digital Communications Interface
Commands
6
UNIT:TEMPerature <unit>
Sets the system temperature unit.
Example: UNIT:TEMP C
The <unit> parameter must be either C or CEL for Celsius or F or FAR for Fahrenheit.
The *RST command sets the temperature unit to Celsius.
Communication Interface Commands
The communication interface commands are used for querying and setting serial port and
IR configuration parameters.
SYSTem:COMMunicate:IR:MODE?
Returns the IR mode setting.
Example: SYST:COMM:IR:MODE?
Response: 0
A value of 0 is returned if the IR mode is off (IR port is disabled). A value of 1 is
returned if the IR mode is in communications mode (COMM). A value of 2 is returned if
the IR port is in IRDA mode (IRDA).
SYSTem:COMMunicate:IR:MODE <num>
Sets the IR mode setting.
Example: SYST:COMM:IR:MODE 1
The <num> parameter specifies the IR mode setting. A value of 0 turns IR mode off (IR
port is disabled). A value of 1 sets the IR mode to communications mode (COMM). A
value of 2 sets the IR mode to IRDA mode (IRDA).
SYSTem:COMMunicate:SERial:BAUD? [MIN|MAX|DEF]
Returns the serial port baud rate setting.
Example: SYST:COMM:SER:BAUD?
Response: 2400
Specifying the MIN, MAX, or DEF parameter returns the minimum, maximum, or
default value respectively.
SYSTem:COMMunicate:SERial:BAUD <baud>|MIN|MAX|DEF
Sets the serial port baud rate setting.
Example: SYST:COMM:SER:BAUD 9600
The <baud> parameter can be one of the following values: 1200, 2400, 4800, 9600,
19200, 38400, or 57600. Specifying the MIN, MAX or DEF parameter sets the baud rate
to the minimum, maximum, or default value respectively. A baud rade of 57600 suspends
echo (full duplex).
SYSTem:COMMunicate:SERial:FDUPlex?
Returns the state of the serial port echo (duplex) setting.
Example: SYST:COMM:SER:FDUP?
Response: 1
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A value of 1 is returned if serial port echo (duplex) is ON. A value of 0 is returned if
serial port echo (duplex) is OFF.
SYSTem:COMMunicate:SERial:FDUPlex <bool>
Sets the serial port echo (duplex) setting.
Example: SYST:COMM:SER:FDUP 1
The <bool> parameter turns serial port echo (duplex) mode on (1 or ON) or off (0 or
OFF). A baud rade of 57600 suspends echo (full duplex).
SYSTem:COMMunicate:SERial:FEED?
Returns the state of the serial port auto printing.
Example: SYST:COMM:SER:FEED?
Response: 0
A value of 1 is returned if serial port auto printing is enabled. A value of 0 if returned is
serial port auto printing is disabled.
SYSTem:COMMunicate:SERial:FEED <bool>
Sets the state of the serial port auto printing.
Example: SYST:COMM:SER:FEED 1
The <bool> parameter turns serial port auto printing on (1 or ON) or off (0 or OFF). The
*RST command sets the serial port auto printing to OFF.
SYSTem:COMMunicate:SERial:LINefeed?
Returns the state of the serial port linefeed setting.
Example: SYST:COMM:SER:LIN?
Response: 1
A value of 1 is returned if the serial port linefeed is enabled. A value of 0 is returned if
serial port linefeed is disabled.
SYSTem:COMMunicate:SERial:LINefeed <bool>
Sets the state of the serial port linefeed setting.
Example: SYST:COMM:SER:LIN 1
The <bool> parameter turns serial port linefeed on (1 or ON) or off (0 or OFF).
SYSTem:COMMunicate:SERial:TIMe? [MIN|MAX|DEF]
Returns the serial port auto printing period in seconds.
Example: SYST:COMM:SER:TIM?
Response: 10
Specifying the MIN, MAX, or DEF parameter returns the minimum, maximum, or
default value respectively.
SYSTem:COMMunicate:SERial:TIMe <num>|MIN|MAX|DEF
Sets to serial port sample period setting in seconds.
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Example: SYST:COMM:SER:TIM 120
The <num> parameter can be one of the following values: 1, 2, 5, 10, 15, 30, 60, 120,
300, 600, 900, 1200, 1800, or 3600. If a value other than one listed here is used, the
instrument automatically selects the nearest acceptable value that is less than the value
entered. Values greater than 3600 or less than 1 are ignored. Specifying the MIN, MAX
or DEF parameter sets the sample period setting to the minimum, maximum, or default
value respectively.
SYSTem:KLOCkout?
Returns the state of the button panel lockout.
Example: SYST:KLOC?
Response: 0
A value of 1 is returned if the button panel is locked out. A value of 0 is returned if the
button panel is enabled (unlocked).
SYSTem:KLOCkout <bool>
Sets the state of the button panel lockout.
Example: SYST:KLOC 1
The <bool> parameter turns the button panel lockout on (1 or ON) or off (0 or
OFF)..
SYSTem:POWer:BATTery?
Returns the current battery charge level.
Example: SYST:POW:BATT?
Response: 90
The returned value indicates the current percentage of charge remaining in the battery.
The battery charge level is approximate and should be used only as a guideline.
Date and Time Commands
The date and time commands are used for accessing the date and time related settings.
SYSTem:DATE?
Returns the clock date.
Example: SYST:DATE?
Response: 2003,9,1
The response is returned in the format, <year>,<month>,<day>.
SYSTem:DATE (<year>,<month>,<day>)
Sets the clock date to the specified year, month, and day.
Example: SYST:DATE 2003,9,17
The <year>, <month>, and <day> parameters must all be supplied. The <year> parameter
is a four-digit number. The <month> parameter is a one or two-digit number (1 to 12).
The <day> parameter is a one or two-digit number (1 to 31). This command may be
password protected (see Password Commands)
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SYSTem:DATE:FORMat? [MIN|MAX|DEF]
Returns the date format used for the display.
Example: SYST:DATE:FORM?
Response: 1
Specifying the MIN, MAX, or DEF parameter returns the minimum, maximum, or
default value respectively. Section , Date and Time Formats, shows the supported date
formats.
SYSTem:DATE:FORMat <num>|MIN|MAX|DEF
Sets the date format used for the display.
Example: SYST:DATE:FORM 0
The <num> parameter can be any of the values indicated in Section , Date and Time
Formats. Specifying the MIN, MAX or DEF parameter sets the date format to the
minimum, maximum, or default value respectively. This command may be password
protected (see Password Commands).
SYSTem:DECimal:FORMat? [MIN|MAX|DEF]
Returns the decimal format used for the display.
Example: SYST:DEC:FORM?
Response: 1
A value of 0 is returned if the decimal format is using a period (‘.’). A value of 1 is
returned if the decimal format is using a comma (‘,’). Specifying the MIN, MAX, or DEF
parameter returns the minimum, maximum, or default value respectively.
SYSTem:DECimal:FORMat <num>|MIN|MAX|DEF
Sets the decimal format used for the display.
Example: SYST:DEC:FORM 0
The <num> parameter can be 0 (‘.’) or 1 (‘,’). If a value other than one listed here is used,
the instrument automatically selects the nearest acceptable value that is less than the
value entered. Specifying the MIN, MAX or DEF parameter sets the decimal format to
the minimum, maximum, or default value respectively.
SYSTem:TIME?
Returns the clock time.
Example: SYST:TIME?
Response: 11,43,23
The response is returned in the format, <hour>,<minute>,<second>.
Note
The system time is always returned using 24-hour format regardless of the
clock time format setting.
SYSTem:TIME (<hour>,<minute>,<second>)
Sets the clock time to the specified hour, minute, and second.
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Example: SYST:TIME 11,43,28
The <hour>, <minute>, and <second> parameters must all be specified. The <hour>
parameter is a one or two-digit number (0 to 23). The <minute> parameter is a one or
two-digit number (0 to 59). The <second> parameter is a one or two-digit number (0 to
59). This command may be password protected (see Password Commands).
Note
The system time is always set using 24-hour format regardless of the clock
time setting.
SYSTem:TIME:DAYLight? [MIN|MAX|DEF]
Returns the automatic daylight saving adjustment setting.
Example: SYST:TIME:DAYL?
Response: 1
A value of 0 is returned if the daylight saving adjustment is disabled. A value of 1 is
returned if the daylight saving adjustment is set to North America (N AMER). A value of
2 is returned if the daylight saving adjustment is set to Europe (EUROPE). Specifying the
MIN, MAX, or DEF parameter returns the minimum, maximum, or default value
respectively.
SYSTem:TIME:DAYLight <num>|MIN|MAX|DEF
Sets the automatic daylight saving adjustment setting.
Example: SYST:TIME:DAYL 1
The <num> parameter sets the automatic daylight saving adjustment setting to off (0),
North America (1), or Europe (2). This command may be password protected (see
Password Commands).
SYSTem:TIME:FORMat? [MIN|MAX|DEF]
Returns the time format used for the display.
Example: SYST:TIME:FORM?
Response: 1
A value of 0 is returned if the time format is set to 12 hour. A value of 1 is returned if the
time format is set to 24 hour. Specifying the MIN, MAX, or DEF parameter returns the
minimum, maximum, or default value respectively.
SYSTem:TIME:FORMat <num>|MIN|MAX|DEF
Sets the time format.
Example: SYST:TIME:FORM 0
The <num> parameter can be 0 (12 HR) or 1 (24 HR). Specifying the MIN, MAX or
DEF parameter sets the time format to the minimum, maximum, or default value
respectively. This command may be password protected (see Password Commands).
Password Commands
The password commands are used for enabling and disabling the password-protected
commands, for querying and setting the password-protected state, and for setting a new
password. These commands are always password protected.
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SYSTem:PASSword:ALARm?
Returns the state of the alarm settings password protection.
Example: SYST:PASS:ALAR?
Response: 0
A value of 1 is returned if the alarm settings are password protected; otherwise a value of
0 is returned.
SYSTem:PASSword:ALARm <bool>
Sets the state of the alarm settings password.
Example: SYST:PASS:ALAR 1
The <bool> parameter turns the alarm settings password protection on (1 or ON) or off (0
or OFF). This command is password protected. Commands protected with this setting are
any of the ALAR… commands
SYSTem:PASSword:CDISable
Disables access to password-protected settings.
Example: SYST:PASS:CDIS
Sending this command prevents the user from changing any password-protected settings.
SYSTem:PASSword:CENable <pass>
Enables access to password protected settings.
Example: SYST:PASS:CEN 1234
The <pass> parameter must match the current system password. This command must be
sent to allow the user to change and password-protected settings. After sending this
command, use the SYST:PASS:CEN:STAT? command to verify access.
SYSTem:PASSword:CENable:STATe?
Returns the current password protection state.
Example: SYST:PASS:CEN:STAT?
Response: 0
The response is either 0 (disabled) or 1 (enabled). A response of 0 indicates password-
protected settings cannot be changed. A response of 1 indicates the password was
successfully entered and password-protected settings can be changed.
SYSTem:PASSword:NEW <pass>|DEF
Sets the current system password to a new password.
Example: SYST:PASS:NEW 1212
The <pass> parameter must be a 4-digit number (0000 to 9999). Specifying the DEF
parameter resets the password to the default password (5020A). This command is
password protected.
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Caution
If the password is forgotten, the themo-hygrometer must be
returned to an Authorized Service Center to have the password
restored.
SYSTem:PASSword:RECord?
Returns the state of data recording settings password-protection.
Example: SYST:PASS:REC?
Response: 0
A value of 1 is returned if data recording password settings are password-protected;
otherwise a value of 0 is returned.
SYSTem:PASSword:RECord <bool>
Sets the state of data recording settings password-protection.
Example: SYST:PASS:REC 1
The <bool> parameter turns the data recording password-protecton on (1 or ON) or off (0
or OFF). This command is password protected. Commands protected with this setting
are: DATA:REC:CLE, DATA:REC:FEED:RHUM, DATA:REC:FEED:TEMP, and
DATA:REC:TIM.
SYSTem:PASSword:SENSor?
Returns the state of the sensor settings password-protection.
Example: SYST:PASS:SENS?
Response: 0
A value of 1 is returned if the sensor settings password-protection is enabled. Otherwise,
a value of 0 is returned.
SYSTem:PASSword:SENSor <bool>
Sets the state of the sensor settings password-protection.
Example: SYST:PASS:SENS 1
The <bool> parameter turns the sensor settings password-protection on (1 or ON) or off
(0 or OFF). This command is password protected. Commands protected with this setting
are: CALC:PAR:DATE:TIME, CALC:PAR:RES, ROUT:CLOS, ROUT:OPEN,
SENS:AVER, SENS:IDEN, SENS:LOCK,and TRIG:TIME.
SYSTem:PASSword:STATistics?
Returns the state of the statistics settings password-protection.
Example: SYST:PASS:STAT?
Response: 0
A value of 1 is returned if the statistics settings password-protection is enabled,
otherwise, a value of 0 is returned.
SYSTem:PASSword:STATistics <bool>
Sets the state of the statistics settings password-protection.
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Example: SYST:PASS:STAT 1
The <bool> parameter turns the statistics settings password-protection on (1 or ON) or
off (0 or OFF). This command is password protected. Commands protected with this
setting are: CALC:AVER:CLE and DATA:DST... ,
SYSTem:PASSword:TIME?
Returns the state of the date and time password-protection.
Example: SYST:PASS:TIME?
Response: 0
A value of 1 is returned if the date and time password-protection is enabled. otherwise, a
value of 0 is returned.
SYSTem:PASSword:TIME <bool>
Sets the state of the date and time password-protection.
Example: SYST:PASS:TIME 1
The <bool> parameter turns the date and time password-protection on (1 or ON) or off (0
or OFF). This command is password protected. Commands protected with this setting
are: SYST:DATE, SYST:DATE:FORM, SYST:TIME, SYST:TIME:DAYL, and
SYST:TIME:FORM.
Status Commands
The status commands are used for querying and setting the state of the instrument
registers. For details on the operation of the status registers refer to the SCPI standards.
*CLS
Clears the status registers.
Example: *CLS
This clears the error queue, Event Status Register, Operation Status Register,
Questionable Status Register, Alarm Status Register, and Measurement status Register.
*ESE?
Returns the Event Status Enable Register. (See *ESE <num> command below.)
Example: *ESE?
Response: 189
*ESE <num>|MIN|MAX|DEF
This command sets the Event Status Enable Register. This register determines which
event bits of the Event Status Register affect the ESB Event Summary-Message Bit of the
Status Byte Register. If any event bit of the Event Status Register is set (1) while its
corresponding mask bit of the Event Status Enable Register is set, the ESB Event
Summary-Message Bit of the Status Byte Register will be set. The value of the
<numeric_value> parameter is a number from 0 to 255 that is the sum of the binary-
weighted values of each mask bit. The Event Status Register is described in Section
below. The following example causes the ESB bit in the Status Byte Register to be set
whenever a command error or execution error occurs.
Example: *ESE 32
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*ESR?
This query command returns the Event Status Register. It also clears the Event Status
Register and the ESB bit of the Status Byte Register. The value returned indicates the
condition of each of the eight bits of the register by adding the binary-weighted values of
each bit. The meaning of each bit, when set (1) , is as follows where 0 is the least
significant and 7 is the most significant:
0
1
2
Operation complete (OPC). Execution of the
last command is completed.
Request control (RQC). No function for this
instrument.
Query error (QYE). An attempt has been
made to read data when none is available or
pending.
3
4
Device dependent error (DDE). A hardware
error condition occurred.
Execution error (EXE). An invalid parameter
for a command has been received or the
command could not be executed under
existing conditions.
5
Command error (CME). An unrecognized
command or a command with improper syntax
has been received.
6
7
User request (URQ). No function for this
instrument.
Power on (PON). Always set after the power
is switched on.
The ESB bit of the Status Byte Register (Section ) is set (1) whenever any bit of the
Event Status Register is set and its corresponding mask bit in the Event Status Enable
Register (Section ) is set. The Event Status Register is cleared when queried with the
ESR? command or when the *CLS command is received. The response in the following
example would be given after an invalid command is received by the 1560 and no other
error occurred.
Example command: *ESR?
Example response: 32
*SRE?
Returns the Service Request Enable Register. (See *SRE <num> command below.)
Example: *SRE?
Response: 0
*SRE <num>|MIN|MAX|DEF
This command sets the Service Request Enable Register. This register determines which
event bits of the Status Byte Register affect the MSS Master Summary Status message bit
of the Status Byte Register and generate a service request with the IEEE-488 interface. If
any event bit of the Status Byte Register is set (1) while its corresponding mask bit of the
Service Request Enable Register is set, the MSS Master Summary Status message bit of
the Status Byte Register will be set and a service request generated. The value of the
<numeric_value> parameter is a number from 0 to 255 that is the sum of the binary-
weighted values of each mask bit. The Status Byte Register is described in section
5.5.10.9 below. The following example causes the MSS bit in the Status Byte Register to
be set and a service request to be generated whenever the ESB bit of the Status Byte
Register is set.
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Example command: *SRE 32
*STB?
This query command returns the Status Byte Register. Reading this register does not
affect it or the output queue. The value returned indicates the condition of each of the
eight bits of the register by adding the binary-weighted values of each bit. The meaning
of each bit, when set (1), is as follows where 0 is the least significant and 7 is the most
significant:
Bit 0
Measurement Status Bit. Indicates that a bit in the Measurement Status
Event Register is set and its corresponding mask bit in the
Measurement Status Enable Register is set. It is cleared when the
Measurement Status Event Register is read.
Bit 1
Alarm Status Bit. Indicates that a bit in the Alarm Status Event Register
is set and its corresponding mask bit in the Alarm Status Enable
Register is set. It is cleared when the Alarm Status Event Register is
read.
Bit 2
Bit 3
Error Bit. Indicates there is an error in the error queue.
Questionable Status Bit. Indicates that a bit in the Questionable Status
Event Register is set and its corresponding mask bit in the Questionable
Status Enable Register is set. It is cleared when the Questionable
Status Even Register is read.
Bit 4
Bit 5
Message Available Bit. Indicates that data is present in the output
queue.
Standard Event Bit. Indicates that a bit in the Standard Event Register is
set and its corresponding mask bit in the Standard Event Enable
Register is set. It is cleared when the Standard Event Register is read.
Master Summery Bit. Indicates that any other bit in the Status Byte
Register is set and its corresponding mask bit in the Service Request
Enable Register is set.
Operation Status Bit. Indicates that a bit in the Operation Status Event
Register is set and its corresponding mask bit in the Operation Status
Enable Register is set. It is cleared when the Operation Status Event
Register is read.
Bit 6
Bit 7
The Status Byte Register can not be set or cleared directly but always reflects the current
state of the reported conditions.
Example: *STB?
Response: 4
*TST? [<bool>]
Reports the results of the self test.
Example: *TST?
Response: 1,1,0,2,0,0,0,0,0,0
This <bool> parameter is optional. If it is not given or if it is 1 a new self-test is
performed and the results returned (the self-test can take several seconds to complete). If
the parameter is 0, the results of the power-on self-test are reported. Ten results are
reported in comma-separated numbers between 0 and 65535. 0 indicates no error or
abnormal condition. Non-zero numbers, when converted to binary values, give specific
information on the type of error depending on which bits are set. The meaning of the
results are as follows:
1st number: sensor status
0: sensors are attached and operating properly
bit 0 is 1: channel 1 sensor is unattached, locked out, or not operating properly
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Commands
6
bit 1 is 1: channel 2 sensor is unattached, locked out, or not operating properly
2nd number: channel 1 sensor test
0: no error
bit 0 is 1: sensor unattached
bit 1 is 1: sensor memory read failure
bit 2 is 1: sensor parameter checksum error
bit 3 is 1: sensor calibration parameters out of range
bit 4 is 1: sensor calibration date is invalid
bit 5 is 1: sensor identification is invalid
bit 6 is 1: sensor version number is incompatible
bit 7 is 1: sensor is locked out
3rd number: channel 2 sensor test (see channel 1 sensor test)
4th number: sensor calibration expired
0: sensor calibration has not yet expired
bit 0 is 1: channel 1 sensor calibration has expired
bit 1 is 1: channel 2 sensor calibration has expired
5th number: clock status
0: operating properly
bit 0 is 1: time/date is invalid
bit 1 is 1: clock is not operating
6th number: serial port status
0: operating properly
bit 0 is 1: failure
7th number: IR port status
0: operating properly
bit 0 is 1: failure
8th number: data card socket status
0: operating properly
bit 0 is 1: no data card is inserted
bit 1 is 1: an invalid or improperly formatted data card is inserted
bit 4 is 1: controller read error
bit 5 is 1: controller write error
bit 6 is 1: invalid controller
9th number: battery monitor test
0: no error
bit 15 is 1: error
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10th number: button status (power-on test only)
0: no button press detected
bit 0 is 1: F pressed during power on
bit 1 is 1: A pressed during power on
bit 2 is 1: D pressed during power on
bit 3 is 1: C pressed during power on
bit 4 is 1: B pressed during power on
bit 5 is 1: E pressed during power on
STATus:ALARm?
This command reads and clears the Alarm Status Event Register. The value returned
indicates the condition of each of the eight bits of the register by adding the binary-
weighted values of each bit. The meaning of each bit, when set (1), is as follows where 0
is the least significant and 7 is the most significant:
0:
no alarm
Bit 1
Channel 1 temperature alarm
bit.
Bit 2
Bit 3
Channel 1 humidity alarm bit.
Channel 2 temperature alarm
bit.
Bit 4
Bit 5
Bit 6
Bit 7
Bit 8
Channel 2 humidity alarm bit.
Low battery alarm bit.
Power failure alarm bit.
Not used.
Not used.
Example: STAT:ALAR?
Response: 32
STATus:ALARm:CONDition?
This command reads the Alarm Status Condition Register. Reading this register does not
affect it. The value returned indicates the condition of each of the eight bits of the register
by adding the binary-weighted values of each bit. The meaning of each bit, when set (1),
is as follows where 0 is the least significant and 7 is the most significant:
0:
no alarm
Bit 0
Channel 1 temperature alarm
bit.
Bit 1
Bit 2
Channel 1 humidity alarm bit.
Channel 2 temperature alarm
bit.
Bit 3
Bit 4
Bit 5
Bit 6
Bit 7
Channel 2 humidity alarm bit.
Low battery alarm bit.
Power failure alarm bit.
Not used.
Not used.
Example: STAT:ALAR?
Response: 32
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STATus:ALARm:ENABle?
This command returns the Alarm Status Enable Register (see STATus:ALARm:ENABle
<num> command below).
Example: STAT:ALAR:ENAB?
Response: 32
STATus:ALARm:ENABle <num>|MIN|MAX|DEF
This command sets the Alarm Status Enable Register. This register determines which
event bits of the Alarm Status Event Register affect the Alarm Status Bit of the Status
Byte Register. If any bit in the Alarm Status Event Register is set (1) while its
corresponding mask bit in the Alarm Status Enable Register is set, the Alarm Status Bit in
the Status Byte Register will be set. The value of the <num> parameter is a number from
0 to 63 that is the sum of the binary-weighted values of each mask bit. The Alarm Status
Event Register is described in Section 8.4.11.9, STATus:ALARm?. The following
example causes the Alarm Status Bit in the Status Byte Register to be set when a power
failure alarm has been triggered.
Example: STAT:ALAR:ENAB 32
Response: 32
STATus:MEASure?
This command reads and clears the Measure Status Event Register. The value returned
indicates the condition of each of the eight bits of the register by adding the binary-
weighted values of each bit. The meaning of each bit, when set (1), is as follows where 0
is the least significant and 7 is the most significant:
0:
Bit 0
no measurement.
Channel 1 temperature
measure bit.
Bit 1
Bit 2
Bit 3
Channel 1 humidity measure
bit.
Channel 2 temperature
measure bit.
Channel 2 humidity measure
bit.
Bit 4
Bit 5
Bit 6
Bit 7
Not used.
Not used.
Not used.
Not used.
Example: STAT:MEAS?
Response: 3
STATus:MEASure:CONDition?
This command reads the Measurement Status Condition Register. Reading this register
does not affect it. The value returned indicates the condition of each of the eight bits of
the register by adding the binary-weighted values of each bit. The meaning of each bit,
when set (1), is as follows where 0 is the least significant and 7 is the most significant:
0:
Bit 0
no measurement
Channel 1 temperature
measure bit.
Bit 1
Bit 2
Channel 1 humidity measure
bit.
Channel 2 temperature
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measure bit.
Channel 2 humidity measure
bit.
Bit 3
Bit 4
Bit 5
Bit 6
Bit 7
Not used
Not used
Not used.
Not used.
Example: STAT:MEAS:COND?
Response: 15
STATus:MEASure:ENABle?
This command returns the Measurement Status Enable Register (see
STATus:MEASure:ENABle <num> command below).
Example: STAT:MEAS:ENAB?
Response: 15
STATus:MEASure:ENABle <num>|MIN|MAX|DEF
This command sets the Measure Status Enable Register. This register determines which
event bits of the Measure Status Event Register affect the Measure Status Bit of the
Status Byte Register. If any bit in the Measure Status Event Register is set (1) while its
corresponding mask bit in the Measure Status Enable Register is set, the Measure Status
Bit in the Status Byte Register will be set. The value of the <num> parameter is a number
from 0 to 15 that is the sum of the binary-weighted values of each mask bit. The Measure
Status Event Register is described in Section 8.4.11.13, STATus:MEASure?. The
following example causes the Measure Status Bit in the Status Byte Register to be set
when measurements on both channels have been completed.
Example: STAT:MEAS:ENAB 15
Response: 15
STATus:OPERation?
This command reads and clears the Operation Status Event Register. The value returned
indicates the condition of each of the eight bits of the register by adding the binary-
weighted values of each bit. The meaning of each bit, when set (1), is as follows where 0
is the least significant and 7 is the most significant:
0:
no measurement
Not used.
Not used.
Not used.
Not used.
Measurement Complete bit.
Not used.
Not used.
Bit 0
Bit 1
Bit 2
Bit 3
Bit 4
Bit 5
Bit 6
Bit 7
Not used.
Example: STAT:OPER?
Response: 16
STATus:OPERation:CONDition?
This command reads the Operation Status Condition Register. Reading this register does
not affect it. The value returned indicates the condition of each of the eight bits of the
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Digital Communications Interface
Commands
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register by adding the binary-weighted values of each bit. The meaning of each bit, when
set (1), is as follows where 0 is the least significant and 7 is the most significant:
0:
no operation
Not used.
Not used.
Not used.
Not used.
Measurement complete bit.
Not used.
Not used.
Bit 0
Bit 1
Bit 2
Bit 3
Bit 4
Bit 5
Bit 6
Bit 7
Not used.
Example: STAT:OPER:COND?
Response: 16
STATus:OPERation:ENABle?
This command returns the Operation Status Enable Register (see
STATus:OPERation:ENABle <num> command below).
Example: STAT:OPER:ENAB?
Response: 16
STATus:OPERation:ENABle <num>|MIN|MAX|DEF
This command sets the Operation Status Enable Register. This register determines which
event bits of the Operation Status Event Register affect the Operation Status Bit of the
Status Byte Register. If any bit in the Operation Status Event Register is set (1) while its
corresponding mask bit in the Operation Status Enable Register is set, the Operation
Status Bit in the Status Byte Register will be set. The value of the <num> parameter is a
number from 0 to 15 that is the sum of the binary-weighted values of each mask bit. The
Operation Status Event Register is described in Section 8.4.11.13, STATus:OPERation?.
The following example causes the Operation Status Bit in the Status Byte Register to be
set when measurements on both channels have been completed.
Example: STAT:OPER:ENAB 16
Response: 16
STATus:QUEStionable?
This command reads and clears the Questionable Status Event Register. The value
returned indicates the condition of each of the eight bits of the register by adding the
binary-weighted values of each bit. The meaning of each bit, when set (1), is as follows
where 0 is the least significant and 7 is the most significant:
0:
no problem
Not used.
Not used.
Not used.
Not used.
Measurement Invalid bit.
Not used.
Not used.
Bit 0
Bit 1
Bit 2
Bit 3
Bit 4
Bit 5
Bit 6
Bit 7
Not used.
Example: STAT:QUES?
Response: 16
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STATus:QUEStionable:CONDition?
This command reads the Questionable Status Condition Register. Reading this register
does not affect it. The value returned indicates the condition of each of the eight bits of
the register by adding the binary-weighted values of each bit. The meaning of each bit,
when set (1), is as follows where 0 is the least significant and 7 is the most significant:
0:
no problem
Not used.
Not used.
Not used.
Not used.
Measurement invalid bit.
Not used.
Not used.
Bit 0
Bit 1
Bit 2
Bit 3
Bit 4
Bit 5
Bit 6
Bit 7
Not used.
Example: STAT:QUES:COND?
Response: 16
STATus:QUEStionable:ENABle?
This command returns the Questionable Status Enable Register (see
STATus:QUEStionable:ENABle <num> command below).
Example: STAT:QUES:ENAB?
Response: 16
STATus:QUEStionable:ENABle <num>|MIN|MAX|DEF
This command sets the Questionable Status Enable Register. This register determines
which event bits of the Questionable Status Event Register affect the Questionable Status
Bit of the Status Byte Register. If any bit in the Questionable Status Event Register is set
(1) while its corresponding mask bit in the Questionable Status Enable Register is set, the
Questionable Status Bit in the Status Byte Register will be set. The value of the <num>
parameter is a number from 0 to 15 that is the sum of the binary-weighted values of each
mask bit. The Questionable Status Event Register is described in Section ,
STATus:QUEStionable?. The following example causes the Questionable Status Bit in
the Status Byte Register to be set when a measurement is invalid.
Example: STAT:QUES:ENAB 16
Response: 16
Port Numbers
The following table lists the communication ports and their number setting.
Number
Port
0
Serial
(default)
IR
1
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Date and Time Formats
The following tables list the acceptable date and time formats and their number setting.
Date Formats
Format
Number
0
1
2
3
MM-DD-YY
MM-DD-YYYY
DD/MM/YY
DD/MM/YYYY
Time Formats
Format
Number
0
H:MM:SSAM/PM (12-hour
format)
1
HH:MM:SS (24-hour format)
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Chapter 7
Calibration Procedure
Title
Page
Introduction........................................................................................................ 7-3
Equipment.......................................................................................................... 7-3
Preparation......................................................................................................... 7-3
Calibration Points .............................................................................................. 7-3
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Calibration Procedure
Introduction
7
Introduction
5026A-x sensors used with the thermo-hygrometer should be periodically calibrated to
ensure accuracy. A six-month calibration interval for the first year, and one-year
thereafter, is recommended. The thermo-hygrometer display unit does not require
calibration, and the sensor can be sent to a qualified service center for calibration without
the thermo-hygrometer display unit. Contact a Fluke Authorized Service Center for return
instructions prior to returning the probe for calibration. Ensure that the probe is packaged
adequately to ensure safe transport. It is recommended that you acquire and use the
optional probe case for transport.
For those who wish to perform their own calibration, the calibration procedure is outlined
as follows.
Equipment
•
Temperature/humidity chamber to use as a relative humidity reference and a stable-
temperature environment (0.37% RH uncertainty or better is recommended)
•
PRT and associated readout to use as the reference thermometer (0.03 °C uncertainty
or better is recommended)
•
•
5020A Thermo-Hygrometer to use to read the 5026A-x sensor
An extension cable to connect with the 5026A-x sensor placed inside the
temperature/humidity chamber
Preparation
Allow the 5026A-x sensor to “dry out” in air with relative humidity between 20 and 50%
and temperature between 16 and 30 °C for 24 hours before calibration. Place the 5026A-x
sensor inside the temperature/humidity chamber, near the center, attached to an extension
cable that runs to the 5020A outside the chamber. Place the PRT inside the chamber with
the tip close to the tip of the 5026A-x sensor. Run the probe cable to the outside of the
chamber and connect it to the PRT readout.
Calibration Points
Each measurement parameter, both temperature and relative humidity, is calibrated at
three points throughout its range with the other parameter held constant at the center of
its range. The following tables list the calibration points for the two sensor models and
for both measurement parameters.
Table 7-1. 5026A-S Temperature Calibration Points
Temperature
15 °C
At Relative Humidity
45%
45%
45%
25 °C
35 °C
Table 7-2. 5026A-S Relative Humidity Calibration Points
Relative Humidity
at Temperature
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20%
45%
70%
25 °C
25 °C
25°C
Table 7-3. 5026A-H Temperature Calibration Points
Temperature
16 °C
at Relative Humidity
45%
45%
45%
20 °C
24 °C
Table 7-4. 5026A-H Relative Humidity Calibration Points
Relative Humidity
at Temperature
20 °C
20%
45%
70%
20 °C
20 °C
Temperature and Humidity Measurement Errors
The temperature and humidity measurement errors for the sensor are obtained at each of
the calibration points. This test is performed to obtain as found data for the calibration
report, if necessary, and adjustment data, and then repeated after adjustments are made to
obtain as left data for the calibration report. Temperature measurements are in degrees
Celsius. For each calibration point Tn and RHn, do the following:
1. Set the temperature and humidity set-point.
2. Allow four hours for settling after the temperature and humidity set-points are
reached before collecting data.
3. Measure the temperature with the 5026A-x probe and compare it with the
temperature read from the reference thermometer in the chamber to obtain the
temperature measurement error:
Terror(Tn) = T 2626 − x(Tn) −Treference(Tn)
or
Measure the relative humidity using the 5026A-x probe and compare it with the
relative humidity read from the chamber to obtain the humidity measurement
error:
RHerror(RHn) = RH2626 − x(RHn) − RHchamber(RHn)
Temperature and Humidity Adjustments
Adjustments to the 5026A-x calibration parameters are required when measurement
errors are excessive or outside of the specification. The calibration parameters can be
accessed using the SENSOR CAL function in the CHANNEL menu. The password is
required to change the parameters. Calculation of new calibration parameters requires
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Calibration Procedure
Temperature and Humidity Adjustments
7
that the measurement errors first be obtained according to the procedure above in section
Temperature and Humidity Measurement Errors. After the Temperature and Humidity
Adjustments procedure is completed, perform the Temperature and Humidity
Measurement Errors procedure again to verify the calibration.
1. Calculate the adjustment ∆TSL to the temperature slope parameter TSL, and the
new temperature slope parameter:
[
Terror(T3) −Terror(T1)
]
∆TSL = −10°C ×
(
T3 −T1
)
′
TSL = TSL + ∆TSL
2. Calculate the slope-adjusted temperature errors:
Tn − 25°C
(
)
′
Terror(Tn) = Terror(Tn) + ∆TSL×
10°C
3. Calculate the median slope-adjusted temperature error, the adjustment ∆TOS to
the temperature offset parameter TOS, and the new temperature offset parameter:
′
′
Terror
(
T3
)
+ Terror
(
T2
)
′
Tmedian =
2
4. Calculate the adjustment ∆HSL to the humidity slope parameter HSL, and the
new humidity slope parameter:
[RHerror
(
RH3
)
− RHerror
(
RH 2
)]
HSL = −25%×
(
RH3 − RH1
)
′
HSL = HSL + ∆HSL
5. Calculate the slope-adjusted humidity errors:
(
RHn − 45%
)
′
RHerror
(
RHn
)
= H Rerror
(
RHn + ∆HSL ×
)
25%
6. Calculate the median slope-adjusted humidity error, the adjustment ∆HOS to the
humidity offset parameter ∆HOS, and the new humidity offset parameter:
′
′
RHerror
(
RH3
)
+ THerror
(
RH2
)
′
RHmedian =
2
′
∆HOS = −RHmedian
′
HOS = HOS + ∆HOS
7. Enter the new values for TOS (TOS′), TSL (TSL′), HOS (HOS′), and HSL
(HSL′) into the thermo-hygrometer. Also set the DATE to the current date and
set the DUE date for the next calibration. If a power-on warning message is
desired when the DUE date expires, set ALERT to ON. Do not change the serial
number. Press ENTER when prompted to write the new values to the sensor.
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Chapter 8
Maintenance and Troubleshooting
Title
Page
Maintenance....................................................................................................... 8-3
Troubleshooting................................................................................................. 8-3
Missing or Scattered Graph Data................................................................... 8-3
Blank screen .................................................................................................. 8-4
Error message at power up ............................................................................ 8-4
Self-Test Error Messages .............................................................................. 8-4
Start-up Error Messages ................................................................................ 8-5
Downloading Recorded Data............................................................................. 8-5
CE Comments.................................................................................................... 8-6
EMC Directive............................................................................................... 8-6
Immunity Testing...................................................................................... 8-6
Emission Testing....................................................................................... 8-6
Low Voltage Directive (Safety) .................................................................... 8-6
Frequently Asked Questions.............................................................................. 8-6
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Maintenance and Troubleshooting
Maintenance
8
Maintenance
The calibration instrument has been designed ease of operation and simplicity of
maintenance as the central theme in the product development. Therefore, with proper care
the instrument should require very little maintenance. Avoid operating the instrument in
oily, wet, dirty, or dusty environments.
•
•
•
If the outside of the instrument becomes soiled, it may be wiped clean with a
damp cloth and mild detergent. Do not use harsh chemicals on the surface, which
may damage the LCD or the plastic front panel.
If a hazardous material is spilt on or inside the equipment, the user is responsible
for taking the appropriate decontamination steps as outlined by the national
safety council with respect to the material.
Before using any cleaning or decontamination method except those
recommended by Fluke, users should check with an Authorized Fluke Scientific
Service Center to be sure that the proposed method will not damage the
equipment.
•
•
If the AC adapter becomes damaged, have it replaced immediately. Never
disassemble the AC adapter or attempt to repair it.
If the instrument is used in a manner not in accordance with the equipment
design, the operation of the thermo-hygrometer may be impaired or safety
hazards may arise.
•
Periodic calibration of the sensors at regular intervals is required to ensure that it
continues to measure with proper accuracy. Calibration should only be performed
by qualified authorized personnel.
Troubleshooting
In case you run into difficulty while operating the thermo-hygrometer, this section
provides some suggestions that may help you solve the problem. Below are several
situations that may arise followed by possible causes and suggested actions you might
take.
The following sections list possible situations, their causes, and suggested actions.
Incorrect temperature or humidity reading
While attempting to measure temperature or humidity, the display shows an incorrect
value or no value at all ( . . . . . . . . . ).
•
•
Check to see if the sensor is properly seated in the correct sockets.
If the actual temperature is too low or too high there may be a problem with the
sensor.
•
•
The measure period may be set to a long interval. Check the measure period
setting.
Refer to Sensors for information on proper sensor handling and situations that
can affect accuracy.
Missing or Scattered Graph Data
If a graph is empty or consists of only scattered points, it may be due to data recording
not being enabled or the recording period set too large. See Record Setting.
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Blank screen
The screen appears blank when switched on.
Ensure the power adapter is attached properly and the power is switched on.
This problem can also be caused by improper adjustment of the contrast. After the power
is switched on allow the thermo-hygrometer at least one minute to complete its self-test
and power on sequence. Then, try to adjust the contrast using the A D buttons.
Error message at power up
The thermo-hygrometer reports an error during the power up self-test.
The display will remain inoperable during a power outage to preserve battery life.
Measurements will continue to be recorded as long as the battery has a charge.
On power up the thermo-hygrometer performs a series of self-tests to check the operation
of all its components and each of the sensors. The results of the self-tests are reported on
the screen. Normally, all tests report ‘OK’. Below is a table of error messages and
recommended actions to correct the error. Often these errors can be corrected by
completing the actions listed. A failure of one or more component causes error messages
to be reported.
Contact an Authorized Service Center for assistance.
Self-Test Error Messages
Table 8-1. Self-Test Error Messages
Error Message
Recommended Action
SYSTEMS: SERIAL PORT FAILURE
SYSTEMS: IR PORT FAILURE
SYSTEMS: DATA CARD FAILURE
BATTERY: FAILURE
Cycle the power. Contact an Authorized Service
Center.
Cycle the power. Contact an Authorized Service
Center.
Cycle the power. Contact an Authorized Service
Center.
Cycle the power. Contact an Authorized Service
Center.
BATTERY: NOT INSTALLED
Check that a battery is properly installed. Replace
the battery.
CLOCK: INVALID TIME
Set the time/date.
MEMORY DATA: EMPTY
Contact an Authorized Service Center.
MEMORY DATA: QUESTIONABLE
Cycle the power. Contact an Authorized Service
Center.
SENSOR <n>: NOT ATTACHED
SENSOR <n>: LOCKED
Check that the sensors are properly inserted into
their sockets or attached with an undamaged
extension cable.
Attach the correct sensor or, if a new sensor is to be
used, unlock the sensor using CHANNEL-SENSOR
LOCK.
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Maintenance and Troubleshooting
Downloading Recorded Data
8
SENSOR <n>: CALIBRATION INVALID
SENSOR <n>: CALIBRATION EXPIRED
Cycle the power. Try a different sensor. Contact an
Authorized Service Center.
Contact an Authorized Service Center to have the
sensor recalibrated. Check the time/date to make
sure it is correct.
POWER DOWN: CALCULATION ERROR
POWER DOWN: SOFTWARE RESET
POWER DOWN: HARDWARE RESET
BUTTONS: <button name>...
Contact an Authorized Service Center.
Contact an Authorized Service Center.
Contact an Authorized Service Center.
Check to make sure the buttons are not being
pressed. Cycle the power. Contact an Authorized
Service Center.
Start-up Error Messages
Error messages may appear after the self-test. If this happens, contact a Fluke Authorized
Service Center for assistance.
Downloading Recorded Data
The thermo-hygrometer stores up to 400,000 readings in its memory. These readings can
be downloaded to a computer using the RS-232 serial port.
The following steps should be followed to download logged data using the serial port:
1. Connect the thermo-hygrometer to a COM port on the computer using the serial
cable.
2. Run a terminal program such as Windows(r) Terminal or HyperTerminal(r).
a. Set up the terminal program to use the correct COM port and baud rate.
Configure the communication settings to use 8 data bits, 1 stop bit, no parity
and no flow control.
b. If you want to save the downloaded data to a file, configure your terminal
program to capture the incoming text and save it to a text file. Refer to your
terminal program’s documentation for details on how to do this.
3. Begin downloading the data.
a. Use the menu function DATA RECORD - DATA PRINT to begin sending
recorded data uning text format. See Data Print.
b. The thermo-hygrometer should immediately begin sending the data. If no
readings have been stored, the thermo-hygrometer will not respond to these
commands.
4. If the terminal program was set to capture the incoming data to a file, wait until
no more data is being received, then stop capturing.
The recorded data can also be transferred using the IR port with LogWare III software, or
written to a file with a data card.
Placement of IR Dongle for Transfer of Data
The thermo-hygrometer can be used with the LogWare III software to collect data via the
IR interface. Place your device near the IR port of the thermo-hygrometer between 3 and
6 inches (8 and 16 cm) and pointed directly at and perpendicular to the IR window.
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Note
When using IRCOMM and an IR dongle, the data transfer can be
susceptible to interference from fluorescent lighting.
CE Comments
EMC Directive
Fluke’s equipment has been tested to meet the European Electromagnetic Compatibility
Directive (EMC Directive, 89/336/EEC). The Declaration of Conformity for your
instrument lists the specific standards to which the unit was tested.
The instrument was designed specifically as a test and measuring device.
Compliance to the EMC directive is through IEC 61326-1 Electrical equipment for
measurement, control and laboratory use - EMC requirements (1998).
As noted in the IEC 61326-1, the instrument can have varying configurations.
The instrument was tested in a typical configuration with shielded, grounded probe and
RS-232 cables. Emissions may, in non-typical applications, exceed the levels required by
the standard. It is not practical to test all configurations, as the manufacturer has no
control over the probes the user may connect to the instrument.
Immunity Testing
The instrument was tested to the requirements for industrial locations.
This allows the instrument to be used in all types of locations from the laboratory to the
factory floor. Criterion B was used for Radiated RF (IEC 61000-4-3) and Conducted RF
(IEC 61000-4-6). Therefore, the operation of the instrument may be affected by excessive
electromagnetic interference and the instrument may not perform within the normal
specification limits in such an environment. Criterion C was used for Electrostatic
Discharge
(ESD, IEC 61000-4-2) and Electric Fast Transit (EFT, Burst, IEC 61000-4-4). If the
instrument is subjected to EFT conditions at 2kV, the instrument may require the user to
cycle the power to return to normal operation.
Emission Testing
The instrument fulfills the limit requirements for Class A equipment but does not fulfill
the limit requirements for Class B equipment. The instrument was not designed to be
used in domestic establishments.
Low Voltage Directive (Safety)
In order to comply with the European Low Voltage Directive (73/23/EEC),
Hart Scientific equipment has been designed to meet the IEC 1010-1 (EN 61010-1) and
the IEC 1010-2-010 (EN 61010-2-010) standards.
Frequently Asked Questions
Q. Can the 5020A operate on battery power?
A. No. The 5020A requires AC power to be fully functional. However, it does utilize a
9V backup battery that runs the data collection in the event of a power outage. When AC
power is interrupted, the display will go blank and an audible alarm will sound to alert
you that the 5020A is running on backup power. The 5020A will continue to collect data
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Maintenance and Troubleshooting
Frequently Asked Questions
8
on backup power for approximately 16 hours. When AC power is restored, the display
will come back on and show a message stating the AC power was interrupted.
Q. Can I swap out sensors in the field?
A. Yes. The sensor's calibration information is stored in the sensor itself. When you
change out the sensor, this information is automatically downloaded to the 5020A.
There is no need to reprogram probe coefficients into the 5020A.
Q. How many readings can the 5020A store in onboard memory?
A. The 5020A can store 400,000 date- & time-stamped data points.
Q. What happens when memory is full?
A. The oldest block of data is discarded to allow the most recent measurements to be
recorded.
Q. How do I tell how much memory has been used?
A. The memory usage expressed as a percent filled is found in the DATA menu under
DATA RECORD and DATA STORAGE.
Q. How do I get data from the 5020A?
A. The 5020A allows you to download data using a RS232 or IR connection to a
computer or printer. You may also use a data card to transfer data to and from the
5020A and a computer.
Q. Is the IR output on the 5020A compatible with my IR printer?
A. The IR port on the 5020A is compatible with any IrDA compatible device.
Q. Can I change the data stored in memory?
A. No. Data stored in memory cannot be changed. It can be downloaded, but the original
data file cannot be changed. Memory can be cleared of all readings.
Q. Does the 5020A utilize password protection?
A. Yes. Refer to section 7.5.4 in this manual.
Q. What is the recommended calibration interval of the 5020A?
A. The 5020A does not require calibration. The 2626-X probes used with the 5020A
should be calibrated annually.
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Index
commands, 6-3, 6-4, 6-11, 6-12, 6-13, 6-22, 6-25,
6-26, 6-30, 6-32, 6-33, 6-35, 6-37, 6-39, 6-41,
6-42, 6-44
—A—
AC adapter, 3-5, 3-6, 4-3
accessories, 2-3, 3-6
accuracy, 4-5, 4-6, 8-3
sensor, 4-5
alarm, 6-12, 6-13
calibration, 6-12
channel, 6-12
communication interface, 6-12
compount, 6-4
accuracy specifications, 1-7
air velocity, 4-6
alarm
data, 6-12
data and time, 6-12
measurement, 6-12
measurement control, 6-12
password, 6-12
query, 6-4
status, 6-12
battery, 5-26
menu, 5-24
power, 5-26
sensor, 5-26
setting, 5-25
system, 5-26
view, 5-27
system, 6-12
communication, 6-3
communication port settings, 5-27
condensation, 4-5, 4-6
contacting Fluke, 1-6
contrast, 4-4, 5-8
alarm menu, 4-4
alarm screen, 4-4
alarm window, 3-3, 3-6
average, 5-4, 5-10, 5-18, 5-20
—B—
—D—
basic operation, 4-3
daily statistics, 5-29, 5-30, 5-33
data card, 3-5, 3-7, 5-13, 5-22, 5-23
date format, 5-29
daylight saving, 5-29
DC power socket, 3-5
decimal, 5-8, 5-31
battery, 2-3, 2-4, 3-5, 3-6, 4-3, 4-4, 5-10, 5-25, 5-26,
5-34
alarm, 5-26
baud rate, 5-31, 6-3, 6-10, 6-13, 6-37
beep, 5-25
buttons, 3-3, 3-4, 3-6
delta, 5-10
dew point, 5-10
display layout, 5-9, 5-30
—C—
calibration, 7-3, 7-4, 7-5
sensors, 7-3
—E—
channel setting, 5-4
clear data, 5-18
clock, 5-29
environmental conditions, 1-8
error mesage, 8-4
error messages, 5-30
start-up, 8-5
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extension cable, 4-4
recording, 4-5, 5-10, 5-13, 5-14, 5-19, 5-30, 5-33
reset display, 5-12
response time, 4-6
RS-232, 5-31, 6-3, 6-4
—F—
firmware version, 5-34
port connector, 3-5
RS-232 communications, 3-5
—G—
graph, 5-11, 5-12, 5-14, 5-16, 5-24, 5-30
humidity, 5-11, 5-24
temperature, 5-11
—S—
safety information, 1-4
self-heating, 4-6
graphs, 5-9
self-test, 4-4, 8-4, 8-5
sensor, 2-3, 3-4, 3-6, 3-7, 4-4, 4-5, 4-6, 5-3, 5-6,
5-7, 5-13, 5-14, 5-25, 5-26, 5-33
calibration, 5-6, 7-3
channel, 5-6
—H—
heat index, 5-10
humidity display resolutions, 5-8
ID, 5-5, 5-6, 5-10
identification, 5-5
lock, 5-6
model, 5-6
parameters, 5-6
—I—
international electrical symbols, 1-4
IR interface, 6-3
IR port, 5-17, 5-20, 5-30, 5-32
IR Port, 3-4
IRDA, 5-17, 5-20, 5-32
IrDA mode, 5-32
password, 5-28
serial number, 5-6, 5-10
sensor accuracy, 4-5
serial period, 6-3
serial port, 5-17, 5-31, 5-32, 6-3
specifications, 1-7
stabilization, 4-6
stand, 3-5
statistics, 5-9, 5-13, 5-19, 5-20, 5-33
auto store, 5-19
—M—
maintenance, 8-3
measurement period, 5-4, 5-25
measuring, 4-1, 4-4
menu
Alarm, 5-1, 5-24
channel, 5-3
data, 5-13
DISPLAY, 5-7
system, 5-27
clear, 5-21
daily, 5-18, 5-19
print, 5-20
reset, 5-19, 5-21
storage capacity, 5-15, 5-17
submenu, 5-3
menu functions, 5-3
submenus, 5-3
symbols, 1-4
system information, 5-34
—P—
password, 5-3, 5-4, 5-5, 5-6, 5-8, 5-9, 5-11, 5-12,
5-14, 5-18, 5-19, 5-24, 5-27, 5-28, 5-29, 5-32,
5-33
—T—
password settings, 5-27, 5-32
ports, 5-30
power, 3-5
power switch, 3-5, 3-6, 4-3, 4-4
printing, 5-8, 5-13, 5-17, 5-20, 5-32
period, 5-32
technical support, 1-6
temperature
resolutions, 5-8
unit, 5-28
temperature unit, 5-27
time format, 5-29
troubleshooting, 8-3
—Q—
quick buttons, 3-6
—U—
unit of temperature, 4-5, 5-27
—R—
rate of change, 5-4, 5-10, 5-26
rate time, 5-4
—V—
version
record data, 5-22
firmware, 5-34
2
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Index (continued)
—W—
—Z—
warnings, 1-4
zone types, 5-9
3
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