Name: Keysight 34972A
Brand: Keysight
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Keysight 34970A/34972A

Data Acquisition / Switch

Unit

User’s Guide

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Software Updates/Licenses3
Restricted Rights Legend3
Safety Symbols4
Safety Considerations5
General5
Before Applying Power5
Ground the Instrument5
Do Not Operate in an Explosive Atmosphere5
Do Not Remove the Instrument Cover6
Do Not Modify the Instrument6
In Case of Damage6
Regulatory Markings7
Waste Electrical and Electronic Equipment (WEEE) Directive 2002/96/ EC8
Product Category8
Sales and Technical Support8
Keysight 34970A/34972A Data Acquisition / Switch Unit9
The Front Panel at a Glance11
The Front-Panel Menu at a Glance12
Display Annunciators14
The 34970A Rear Panel at a Glance15
The 34972A Rear Panel at a Glance16
Benchlink Data Logger 3 at a Glance18
The Plug-In Modules at a Glance19
Table of Contents23
Quick Start33
To Prepare the Instrument for Use34
Benchlink Data Logger Software36
Benchlink Data Logger 3 Software Installation Procedure36
On-Line Help System37
To Connect Wiring to a Module38
To Set the Time and Date40
To Configure a Channel for Scanning42
To Copy a Channel Configuration45
To Close a Channel47
If the Instrument Does Not Turn on49
To Adjust the Carrying Handle52
To Rack Mount the Instrument53
Front-Panel Overview56
Front-Panel Menu Reference56
To Monitor a Single Channel59
To Set a Scan Interval60
To Apply MX+B Scaling to Measurements61
To Configure Alarm Limits62
To Read a Digital Input Port64
To Write to a Digital Output Port65
To Read the Totalizer Count66
To Output a DC Voltage67
To Configure the Remote Interface - 34970A68
To Configure the Remote Interface - 34972A71
To Store the Instrument State74
System Overview75
Data Acquisition System Overview76
The Computer and Interface Cable (34970A Only)77
Measurement Software78
The 34970A/34972A Data Acquisition / Switch Unit80
Plug-In Modules81
System Cabling83
Transducers and Sensors84
Alarm Limits85
Signal Routing and Switching86
Switching Topologies86
Measurement Input90
The Internal DMM90
Scanning92
Scanning with External Instruments94
The Multifunction Module96
Control Output98
The Multifunction Module98
The Actuator / General Purpose Switch100
Features and Functions103
SCPI Language Conventions103
Rules for Using a Channel List103
Scanning104
Rules for Scanning104
Power Failure107
Adding Channels to a Scan List108
Scan Interval110
Scan Count117
Reading Format118
Channel Delay119
Automatic Channel Delays120
Viewing Readings Stored in Memory122
Scanning with External Instruments125
General Measurement Configuration129
Measurement Range129
Measurement Resolution131
Custom A/D Integration Time133
Autozero135
Temperature Measurement Configuration136
Measurement Units136
Thermocouple Measurements137
RTD Measurements139
Thermistor Measurements141
Voltage Measurement Configuration142
DC Input Resistance142
AC Low Frequency Filter143
Resistance Measurement Configuration144
Offset Compensation144
Current Measurement Configuration145
AC Low Frequency Filter145
Frequency Measurement Configuration147
Low Frequency Timeout147
MX+B Scaling148
Alarm Limits151
Viewing Stored Alarm Data155
Using the Alarm Output Lines157
Using Alarms with the Multifunction Module159
Digital Input Operations162
Totalizer Operations164
Digital Output Operations167
DAC Output Operations169
System-Related Operations170
State Storage170
Error Conditions172
Self-Test173
Display Control174
Real-Time System Clock175
Internal DMM Disable175
Firmware Revision Query176
Relay Cycle Count177
Single-Channel Monitoring179
SCPI Language Version Query180
Mass Memory (USB) Subsystem - 34972A181
General Capabilities181
SCPI Commands183
Folder and File Structure183
Contents of Data Files185
USB Drive Front Panel - 34972A187
Setting up Automatic Logging187
Exporting Readings187
Formatting Readings187
Importing an Instrument Configuration188
Remote Interface Configuration - 34970A189
GPIB Address189
Remote Interface Selection190
Baud Rate Selection (RS-232)190
Parity Selection (RS-232)191
Flow Control Selection (RS-232)192
Remote Interface Configuration - 34972A194
Enabling and Disabling LAN Connectivity194
Determining the Status of LAN Connectivity194
Resetting the LAN194
Enabling and Disabling DHCP195
Setting the IP Address195
Setting the Subnet Mask196
Setting the Default Gateway196
Setting the DNS Server196
Viewing the MAC Address197
Calibration Overview198
Calibration Security198
Calibration Message201
Calibration Count202
Factory Reset State203
Instrument Preset State205
Multiplexer Module Default Settings207
Module Overview209
34901A 20-Channel Multiplexer210
34902A 16-Channel Multiplexer213
34903A 20-Channel Actuator216
34904A 4X8 Matrix Switch219
34905A/6A Dual 4-Channel RF Multiplexers222
34907A Multifunction Module225
34908A 40-Channel Single-Ended Multiplexer227
Error Messages232
Execution Errors233
Instrument Errors238
Self-Test Errors246
Calibration Errors248
Plug-In Module Errors251
Application Programs254
Example Programs for Excel 7.0255
Excel 7.0 Example: Takereadings Macro256
Excel 7.0 Example: Port Configuration Macro258
Excel 7.0 Example: Scanchannels Macro260
Example Programs for C and C263
C/C++ Example: Dac_Out.C264
C/C++ Example: Stat_Reg.C265
Tutorial267
System Cabling and Connections268
Cable Specifications268
Grounding Techniques270
Shielding Techniques271
Separation of High-Level and Low-Level Signals271
Sources of System Cabling Errors272
Measurement Fundamentals276
The Internal DMM276
Temperature Measurements278
Sources of Error in Thermocouple Measurements286
DC Voltage Measurements288
Sources of Error in DC Voltage Measurements289
AC Voltage Measurements294
Sources of Error in AC Voltage Measurements297
Current Measurements302
Sources of Error in DC Current Measurements303
Sources of Error in AC Current Measurements303
Resistance Measurements304
Sources of Error in Resistance Measurements307
Strain Gage Measurements308
Frequency and Period Measurements312
Low-Level Signal Multiplexing and Switching314
One-Wire (Single-Ended) Multiplexers315
Two-Wire Multiplexers316
Four-Wire Multiplexers317
Signal Routing and Multiplexing318
Sources of Error in Multiplexing and Switching319
Actuators and General-Purpose Switching321
Snubber Circuits322
RC Protection Networks322
Using Varistors323
Using Attenuators324
Matrix Switching325
Combining Matrices326
RF Signal Multiplexing327
Sources of Error in RF Switching328
Multifunction Module329
Digital Input329
Digital Output330
Using an External Pull-Up331
Driving External Switches332
Totalizer333
Totalizer Errors334
Voltage (DAC) Output335
DAC Errors336
Relay Life and Preventive Maintenance337
Relay Life338
Relay Load338
Switching Frequency339
Replacement Strategy339
Specifications341

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Keysight 34972A Specifications

General

Brand	Keysight
Model	34972A
Category	Switch
Language	English

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Keysight 34972A User Manual

Table of Contents

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Keysight 34972A Specifications

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