Keysight 34980A User Manual

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Keysight 34980A Multifunction Switch/ Measure Unit

Mainframe User’s Guide

Distributed by:

Sie haben Fragen oder wünschen eine Beratung? Angebotsanfrage unter 07121 / 51 50 50 oder über info@datatec.de

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Notices

CAUTION

WARNING

reproduced in any form or by any means (including electronic storage and retrieval or translation into a foreign language) without prior agreement and written consent from Keysight Technologies as governed by United States and international copyright laws.

Trademarks

Microsoft® and Windows® are U.S. registered trademarks of Microsoft Corporation.

Manual Part Number

34980-90005

Edition

Edition 10, August 20, 2019

Printed in:

Printed in Malaysia

Published by:

Keysight Technologies Bayan Lepas Free Industrial Zone, 11900 Penang, Malaysia

Technology Licenses

The hard ware and/or software described in this document are furnished under a license and may be used or copied only in accordance with the terms of such license.

Declaration of Conformity

Declarations of Conformity for this product and for other Keysight products may be downloaded from the Web. Go to http://www.keysight.com/

go/conformity. You can then search by

product number to find the latest Declaration of Conformity.

U.S. Government Rights

The Software is “commercial computer software,” as defined by Federal Acquisition Regulation (“FAR”) 2.101. Pursuant to FAR 12.212 and 27.405-3 and Department of Defense FAR Supplement (“DFARS”) 227.7202, the U.S. government acquires commercial computer software under the same terms by which the software is customarily provided to the public. Accordingly, Keysight provides the Software to U.S. government customers under its standard commercial license, which is embodied in its End User License Agreement (EULA), a copy of which can be found at http://www.keysight.com/find/

sweula. The license set forth in the

EULA represents the exclusive authority by which the U.S. government may use, modify, distribute, or disclose the Software. The EULA and the license set forth therein, does not require or permit, among other things, that Keysight: (1) Furnish technical information related to commercial computer software or commercial computer software documentation that is not customarily provided to the public; or (2) Relinquish to, or otherwise provide, the government rights in excess of these rights customarily provided to the public to use, modify, reproduce, release, perform, display, or disclose commercial computer software or commercial computer software documentation. No additional government requirements beyond those set forth in the EULA shall apply, except to the extent that those terms, rights, or licenses are explicitly required from all providers of commercial computer software pursuant to the FAR and the DFARS and are set forth specifically in writing elsewhere in the EULA. Keysight shall be under no obligation to update, revise or otherwise modify the Software. With respect to any technical data as defined by FAR 2.101, pursuant to FAR

12.211 and 27.404.2 and DFARS

227.7102, the U.S. government acquires no greater than Limited Rights as defined in FAR 27.401 or DFAR

227.7103-5 (c), as applicable in any technical data.

Warranty

THE MATERIAL CONTAINED IN THIS DOCUMENT IS PROVIDED “AS IS,” AND IS SUBJECT TO BEING CHANGED, WITHOUT NOTICE, IN FUTURE EDITIONS. FURTHER, TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW, KEYSIGHT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, WITH REGARD TO THIS MANUAL AND ANY INFORMATION CONTAINED HEREIN, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. KEYSIGHT SHALL NOT BE LIABLE FOR ERRORS OR FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES IN CONNECTION WITH THE FURNISHING, USE, OR PERFORMANCE OF THIS DOCUMENT OR OF ANY INFORMATION CONTAINED HEREIN. SHOULD KEYSIGHT AND THE USER HAVE A SEPARATE WRITTEN AGREEMENT WITH WARRANTY TERMS COVERING THE MATERIAL IN THIS DOCUMENT THAT CONFLICT WITH THESE TERMS, THE WARRANTY TERMS IN THE SEPARATE AGREEMENT SHALL CONTROL.

Safety Information

A CAUTION notice denotes a hazard. It calls attention to an operating procedure, practice, or the like that, if not correctly performed or adhered to, could result in damage to the product or loss of important data. Do not proceed beyond a CAUTION notice until the indicated conditions are fully understood and met.

A WARNING notice denotes a hazard. It calls attention to an operating procedure, practice, or the like that, if not correctly performed or adhered to, could result in personal injury or death. Do not proceed beyond a WARNING notice until the indicated conditions are fully understood and met.

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Safety Symbols

The following symbols on the instrument and in the documentation indicate precautions which must be taken to maintain safe operation of the instrument.

Alternating current (AC) Caution, risk of electric shock

Frame or chassis (ground) terminal

Standby supply. Unit is not completely disconnected from ac mains when switch is off

Caution, risk of danger (refer to this manual for specific Warning or Caution information)

Keysight 34980A Mainframe User’s Guide 3

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Additional Safety Notices

The following general safety precautions must be observed during all phases of operation of this instrument. Failure to comply with these precautions or with specific warnings or instructions elsewhere in this manual violates safety standards of design, manufacture, and intended use of the instrument. Keysight Technologies assumes no liability of the customer’s failure to comply with the requirements.

General

Do not use this products in any manner not specified by the manufacturer. The protective features of this product may be impaired if it is used in a manner not specified in the operation instructions.

Before Applying Power

Verify that all safety precautions are taken. Make all connections to the unit before applying power.

Ground the Instrument

This product is provided with protective earth terminals. To minimize shock hazard, the instrument must be connected to the ac power mains through a grounded power cable, with the ground wire firmly connected to an electrical ground (safety ground) at the power outlet. Any interruption of the protective (grounding) conductor or disconnection of the protective earth terminal will cause a potential shock hazard that could result in personal injury.

Do Not Operate in an Explosive Atmosphere

Do not operate the instrument in the presence of flammable gases or fumes.

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Do Not Remove the Instrument Cover

Only qualified, service-trained personal who are aware of the hazards involved should remove instrument covers. Always disconnect the power cable and any external circuits before removing the instrument cover.

Do Not Modify the Instrument

Do not install substitute parts or perform any unauthorized modification to the product. Return the product to an Keysight Sales and Service Office for service and repair to ensure that safety features are maintained.

In Case of Damage

Instruments that appear damaged or defective should be made inoperative and secured against unintended operation until they can be repaired by qualified service personnel.

Environmental Conditions

Keysight 34980A is designed for indoor use in an installation category II and low condensation environment. Table below shows the general environmental conditions for this instrument. Refer to the product data sheet at

https://literature.cdn.keysight.com/litweb/pdf/5989-1437EN.pdf for more

information on the instrument general specifications.

General specifications Requirement

Temperature

Humidity

Altitude Up to 2,000 m

Pollution degree 1 or 2

Keysight 34980A Mainframe User’s Guide 5

Operating condition: 0°C to 55°C Storage condition: -40°C to 70°C

Up to 80% R.H. at 31°C (non-condensing), decreasing linearly to 50% R.H. at 40°C (non-condensing)

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Waste Electrical and Electronic Equipment (WEEE) Directive 2002/ 96/EC

This instrument complies with the WEEE Directive (2002/96/EC) marking requirement. This affixed product label indicates that you must not discard this electrical or electronic product in domestic household waste.

Product category:

With reference to the equipment types in the WEEE directive Annex 1, this instrument is classified as a “Monitoring and Control Instrument” product.

The affixed product label is as shown below.

Do not dispose in domestic household waste.

To return this unwanted instrument, contact your nearest Keysight Service Center, or visit http://about.keysight.com/en/companyinfo/environment/takeback.shtml for more information.

Sales and Technical Support

To contact Keysight for sales and technical support, refer to the support links on the following Keysight websites:

– www.keysight.com/find/34980a

(product-specific information and support, software and documentation updates)

– www.keysight.com/find/assist

(worldwide contact information for repair and service)

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Safety Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

Additional Safety Notices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Before Applying Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Ground the Instrument . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

Do Not Operate in an Explosive Atmosphere . . . . . . . . . . . . . . . . . . .4

Do Not Remove the Instrument Cover . . . . . . . . . . . . . . . . . . . . . . . .5

Do Not Modify the Instrument . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

In Case of Damage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

Environmental Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

Waste Electrical and Electronic Equipment (WEEE)

Directive 2002/96/EC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Product category: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Sales and Technical Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

1 Introduction to the 34980A

Data Acquisition Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

Measurement Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

Data Acquisition Circuitry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17

Plug-In Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19

System Cabling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19

Transducers and Sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

Alarm Limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

Signal Routing and Switching . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Switching Topologies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22

RF and Microwave Switching . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24

Measurement Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25

The Internal DMM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Scanning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27

Scanning With External Instruments . . . . . . . . . . . . . . . . . . . . . . . . .29

The Digital Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31

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Control Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

The Digital Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

The Actuator / General-Purpose Switches . . . . . . . . . . . . . . . . . . . . 35

2 Getting Started

Front Panel at a Glance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Rear Panel at a Glance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

Rear Panel Connector Pinouts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

External Trigger/Alarms Connector (Male D-Sub) . . . . . . . . . . . . . . 42

Analog Bus Connector (Female D-Sub) . . . . . . . . . . . . . . . . . . . . . . 43

Annunciator Display Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

Installing and Connecting Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

Removing a Slot Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

Installing a Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

Instrument Rack Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

Operating the 34980A from the Front Panel Keyboard . . . . . . . . . . . . 58

Front Panel Menu Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

Menu Example 1: Setting the Time and Date . . . . . . . . . . . . . . . . . . 61

Menu Example 2: Opening and Closing Channel Relays . . . . . . . . . 63

Using the Measure Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

Menu Example 3: Configuring the DMM for a Measurement . . . . . . 66

Menu Example 4: Configuring a Channel for a Measurement . . . . . 69

Connecting the 34980A to Your Computer . . . . . . . . . . . . . . . . . . . . . . 73

Connecting Over LAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74

Connecting Over GPIB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80

Connecting Over USB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81

Communicating with the 34980A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83

Operating the 34980A using the Integrated Web Browser Interface . . 84

Launching the Web Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85

Displaying the Browser Web Control Page . . . . . . . . . . . . . . . . . . . 87

Selecting the “Allow Full Control” Mode . . . . . . . . . . . . . . . . . . . . . 88

Setting a Web Browser Password . . . . . . . . . . . . . . . . . . . . . . . . . . . 89

Closing and Opening Channel Relays . . . . . . . . . . . . . . . . . . . . . . . . 90

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Modifying the Channel Configuration . . . . . . . . . . . . . . . . . . . . . . . .91

Sending SCPI Commands Via the Web Interface . . . . . . . . . . . . . . .92

34980A Documentation Map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .95

3 Features and Functions

Front Panel Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .99

Front Panel Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .99

Front Panel Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .101

Basic Operating Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .102

SCPI Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .103

SCPI Language Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .103

Rules for Using a Channel List . . . . . . . . . . . . . . . . . . . . . . . . . . . .104

Remote Interface Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .105

GPIB Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .106

LAN Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .106

Clearing 34980A Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .115

Volatile Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .115

Non-Volatile Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .115

Analog Bus and Internal DMM Considerations . . . . . . . . . . . . . . . . . .117

Environmental Operating Conditions . . . . . . . . . . . . . . . . . . . . . . .117

Electrical Operating Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . .118

General Measurement Configuration . . . . . . . . . . . . . . . . . . . . . . . . . .119

Overview of Measurement Modes . . . . . . . . . . . . . . . . . . . . . . . . . .119

Analog Buses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .122

Measurement Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .123

Measurement Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .124

Measurement Resolution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .125

Custom A/D Integration Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . .127

Autozero . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .128

Trigger Delay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .129

Automatic Trigger Delays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .130

Safety Interlock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .131

User-Defined Channel Labels . . . . . . . . . . . . . . . . . . . . . . . . . . . . .132

2-Wire Versus 1-Wire Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .134

Keysight 34980A Mainframe User’s Guide 9

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Temperature Measurement Configuration . . . . . . . . . . . . . . . . . . . . . 135

Measurement Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135

Thermocouple Measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136

RTD Measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138

Thermistor Measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139

Voltage Measurement Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . 140

DC Input Resistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140

AC Low Frequency Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141

Resistance Measurement Configuration . . . . . . . . . . . . . . . . . . . . . . . 142

Offset Compensation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142

Current Measurement Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . 143

AC Low Frequency Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143

Frequency Measurement Configuration . . . . . . . . . . . . . . . . . . . . . . . 145

Low Frequency Timeout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145

Mx+B Scaling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146

Scanning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148

Rules for Scanning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148

Adding Channels to the Scan List . . . . . . . . . . . . . . . . . . . . . . . . . . 150

Scan Trigger Source . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152

Trigger Count . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157

Sweep Count . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 158

Sample Count . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 159

Channel Delay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 161

Automatic Channel Delays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 163

Reading Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 164

Non-Sequential Scanning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 166

Viewing Readings Stored in Memory . . . . . . . . . . . . . . . . . . . . . . . 167

Monitor Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 169

Scanning With External Instruments . . . . . . . . . . . . . . . . . . . . . . . . . . 171

Alarm Limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174

Viewing Stored Alarm Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 178

Using the Alarm Output Lines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 179

Using Alarms With the Digital Modules . . . . . . . . . . . . . . . . . . . . . 181

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Sequences . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .184

Defining a Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .185

Querying the Sequence Definition . . . . . . . . . . . . . . . . . . . . . . . . . .187

Executing a Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .187

Executing a Sequence on an Alarm Condition . . . . . . . . . . . . . . . .188

Deleting Sequences . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .190

Reading the List of Stored Sequences . . . . . . . . . . . . . . . . . . . . . .190

System-Related Operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .191

Firmware Revision . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .191

Product Firmware Updates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .192

Instrument State Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .192

Error Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .194

Self-Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .195

Front-Panel Display Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .196

Front-Panel Number Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .197

Real-Time System Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .197

Internal DMM Disable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .198

Relay Cycle Count . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .198

SCPI Language Version . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .199

Calibration Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200

Calibration Security . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .200

Calibration Count . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .201

Calibration Message . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .202

Factory Reset State . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 203

Instrument Preset State . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .206

4 Introduction to the Plug-In Modules for the 34980A

User’s Guides for the 34980A’s Plug-In Modules . . . . . . . . . . . . . . . .210

Available Modules, at a Glance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .211

Slot and Channel Addressing Scheme . . . . . . . . . . . . . . . . . . . . . . . . .213

Interconnection Solutions Overview . . . . . . . . . . . . . . . . . . . . . . . . . . .215

Module Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .217

General Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .217

Environmental Operating Conditions . . . . . . . . . . . . . . . . . . . . . . .217

Electrical Operating Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . .219

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12 Keysight 34980A Mainframe User’s Guide

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Keysight 34980A Multifunction Switch/Measure Unit Mainframe User’s Guide

1 Introduction to the 34980A

Data Acquisition Overview 14

Signal Routing and Switching 22

Measurement Input 25

Control Output 33

This chapter provides an overview of a computer-based data acquisition and measurement control system using the Keysight 34980A Multifunction Switch/ Measure Unit and typical plug-in modules.

Page 14

1 Introduction to the 34980A

Computer

and Software

Interface

Cable

34980A

Mainframe

(up to 8)

Modules

Plug-in

System

Cabling

Transducers,

Sensors and Events

Data Acquisition Overview

You can use the Keysight 34980A as a stand-alone instrument, but for most applications you will want to take advantage of its PC connectivity and remote operation capabilities. A simplified data acquisition system is shown below.

14 Keysight 34980A Mainframe User’s Guide

The system configuration shown above offers the following advantages:

– You can use the 34980A to perform data storage, data reduction,

mathematical calculations, and conversion to engineering units.

– You can use the PC to easily configure and present data.

– You can electrically isolate analog signals and measurement sensors from the

noisy PC environment and earth ground.

– You can use a single PC to monitor multiple instruments and measurement

points while performing other PC-based tasks.

The 34980A is shipped with Ethernet, USB and GPIB (IEEE-488) interfaces. For a detailed description of these connections, see “Connecting the 34980A to Your

Computer” on page 73.

Page 15

Ideally, before selecting a PC interface mode and making physical connections between the 34980A and your PC, you would first determine what software tools you will be using to communicate with and control the 34980A (see

“Measurement Software” on page 15 for a brief description of available software

choices).

– If you will be using the 34980A's integrated Web Browser interface (LAN only),

no additional software is required for connection.

– If you will be using another software tool (e.g. BenchLink Data Logger Pro,

Keysight IO Libraries Suite), you will need to install both that software and a

device driver before connecting the instrument over GPIB or USB. No device

driver is required for LAN.

– If you install the IO Libraries Suite, USB device drivers should be installed

automatically.

Measurement Software

A variety of software tools are available for remote communication with the 34980A; the most commonly used tools are briefly discussed below.

Introduction to the 34980A 1

Data Logging and Monitoring

Keysight 34832A BenchLink Data Logger Pro is a Windows®-based application available on CD from Keysight. It is designed to make it easy to use the 34980A with your PC (over GPIB, USB or LAN) for collecting and analyzing data. You program the desired measurement, scan and data logging requirements using an intuitive, tabbed spreadsheet environment; data is displayed in tabular and graphical formats.

Keysight 34980A Mainframe User’s Guide 15

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1 Introduction to the 34980A

The BenchLink Data Logger Pro software provides several advanced features not available in the standard BenchLink Data Logger software (which ships for free on CD-ROM with every 34980A ordered with an internal DMM). Particularly, the Pro version allows for customized action scripts, conditional control of external instruments, decision making or program initiation based on limit checks and alarm events, and advanced math operations. Both the standard and Pro versions are supplied on the same CD-ROM. The Pro version can be used for 30 days without obligation; subsequently a software license is required for its continued use. Go to www.keysight.com/find/34832A for purchasing information.

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Introduction to the 34980A 1

Web Browser Interface

The 34980A incorporates in its firmware a graphic Web Browser interface for remote LAN access and control of the instrument via a Java-enabled Web browser, such as Microsoft® Internet Explorer. While not as comprehensive a tool as the BenchLink Data Logger software, the Web Browser provides an alternative method for remote system configuration, troubleshooting, and monitoring.

For a detailed description of the Web Browser interface, see “Operating the

34980A using the Integrated Web Browser Interface” on page 84.

Other Software for Automated Testing with Multiple Instruments

These software tools can also be used with the 34980A:

– Keysight IO Libraries Suite (shipped on CD with the 34980A)

– Keysight IntuiLink

– Keysight VEE (an evaluation copy of the VEE Pro software is shipped on CD

with the 34980A)

– National Instruments LabVIEW

– Microsoft® Visual Basic or Visual C++

Data Acquisition Circuitry

As shown below, the 34980A's main system processor controls all of the basic functionality of the instrument. This is where the instrument communicates with the plug-in modules, interacts with command transactions over the remote interfaces, and controls the optional internal DMM. The main system processor also performs Mx+B scaling operations, monitors alarm conditions, converts transducer measurements to engineering units, adds time stamp information to scanned measurements, and stores measurement data in memory.

Keysight 34980A Mainframe User’s Guide 17

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1 Introduction to the 34980A

Main

System

Processor

GPIB

USB

LAN

Slot

1000

Slot

3000

Slot

8000

Slot 2000

Optional

Internal

DMM

Control

Analog

Bus

Alarms

OUT

External

Trigger

ABUS1

ABUS4

ABUS3

ABUS2

Power

Hi Measure

Lo Measure Hi Sense Lo Sense

Digital Bus

The main system processor also controls activity on the four hardware alarm outputs and external triggering lines. You can use the alarm output lines to trigger external alarm lights, sirens, or send a TTL pulse to your control system.

The 34980A provides four 2-wire internal Analog Buses for easier signal routing. You can route your measurements directly to the optional internal DMM using the 34980A multiplexer and matrix modules or you can connect to external signals via the Analog Bus connector located on the instrument's rear panel. Since four 2-wire buses are provided, you can dedicate one bus for use with the internal DMM while using the other three buses for module extensions or additional signal routing between modules.

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Plug-In Modules

The 34980A offers a complete selection of plug-in modules to give you high-quality measurement, switching, and control capabilities. The plug-in modules communicate with the main system processor via the internal digital bus. The multiplexer modules also connect to the internal DMM via the internal Analog Buses. Each module has its own microprocessor to offload the main system processor and minimize backplane communications for faster throughput. See

Chapter 4, “Introduction to the Plug-In Modules for the 34980A” for an overview

of the available plug-in modules and their functions. Each module is shipped with its own User's Guide.

System Cabling

Depending on your specific requirements, you can connect your device under test (DUT) to the 34980A using several optional interconnection solutions (see

“Interconnection Solutions Overview” on page 215). Detachable terminal blocks

are available for low-frequency modules and offer an extremely flexible method for connecting external wiring. You can also connect to the plug-in modules directly using standard cabling with 50-pin D-Sub and 78-pin D-Sub connectors. Optional solder cup connector kits are also available if you choose to build your own custom cabling.

Introduction to the 34980A 1

The type of cabling that you use to connect your signals, transducers, and sensors to the module is critical to ensure measurement integrity. Some types of transducers, such as thermocouples, have very specific requirements for the type of cabling that should be used to make connections. Be sure to consider the usage environment when choosing wire gauge size and insulation qualities. Wire insulation typically consists of materials such as PVC or PTFE. The table below

lists several common cable types and describes their typical uses.

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1 Introduction to the 34980A

Cable Type C o m m o n U s e s Comments

Thermocouple Extension Wire

Twisted Pair, Shielded Twisted Pair

Shielded Coaxial, Double-Shielded Coaxial

Flat Ribbon, Twisted Pair Ribbon

Thermocouple measurements

Measurement inputs, voltage outputs, switching, counting

VHF Signal switching Most common cable for high-frequency signal routing.

Digital Input/Output Often used with mass termination connectors. These cables

Available in specific thermocouple types. Also available in a shielded cable for added noise immunity.

Most common cable for low-frequency measurement inputs. Twisted pair reduces common mode noise. Shielded-twisted pair provides additional noise immunity.

Available in specific impedance values (50Ω or 75Ω). Provides excellent noise immunity. Double-shielded cable improves isolation between channels.

Requires special connectors.

provide little noise immunity.

Transducers and Sensors

Transducers and sensors convert a physical quantity into an electrical quantity. The electrical quantity is measured and the result is then converted to engineering units by the 34980A's main system processor. For example, when measuring a thermocouple, the instrument measures a dc voltage and mathematically converts it to a corresponding temperature in °C, °F, or K.

Measurement Typical Transd ucer Type T y p i c a l T r a n s d u c e r O u t p u t

Thermocouple 0 mV to 80 mV

Temperature

Pressure Solid state device ±10 VDC

Flow Rotary type, thermal type 4 mA to 20 mA

Strain Resistive elements 4-wire resistance from 10Ω to 10 kΩ

Events Limit switches, optical counters, rotary

Digital System status TTL levels

Resistance temperature detector (RTD) 2-wire or 4-wire resistance from 5Ω to 500Ω

Thermistor 2-wire or 4-wire resistance from 10Ω to 1MΩ

0V or 5V pulse train

encoder

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Alarm Limits

The 34980A has four alarms which you can configure to alert you when a reading exceeds specified limits on a channel during a scan. You can assign a high limit, a low limit, or both to any configured channel in the scan list. You can assign multiple channels to any of the four available alarms (numbered 1 through 4). For example, you can configure the instrument to generate an alarm on Alarm 1 when a limit is exceeded on any of channels 1003, 2025, or 3020.

You can also assign alarms to channels on the digital modules (34950A and 34952A). For example, you can generate an alarm when a specific bit pattern or bit pattern change is detected on a digital input channel or when a specific count is reached on a totalizer channel. With the digital modules, the channels do not have to be part of the scan list to generate an alarm.

Introduction to the 34980A 1

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1 Introduction to the 34980A

Common

Channel 2

Channel 3

Channel 4

Channel 1

Signal Routing and Switching

The switching capabilities of the plug-in modules available with the 34980A provide test system flexibility and expandability. You can use the switching plug-in modules to route signals to and from your test system or multiplex signals to the internal DMM or external instruments.

Relays are electromechanical devices which are subject to wear-out failure modes. The life of a relay, or the number of actual operations before failure, is dependent upon how the relay is used—applied load, switching frequency, and environment. The 34980A Relay Maintenance System automatically counts the cycles of each relay in the instrument and stores the total count in non-volatile memory on each switch module. You can use this feature to track relay failures and to predict system maintenance requirements. For more information on using this feature, refer to “Relay Cycle Count” on page 198.

Switching Topologies

Several switching plug-in modules are available with different topologies for various applications. The following switching topologies are available:

– Multiplexer (with armature, reed, or FET switches)

– Matrices (with armature or reed switches)

– General Purpose (with Form C or Form A switches)

The following sections describe each of these switching topologies. For more information, see the individual User's Guides included with each module.

Multiplexer Switching

Multiplexers allow you to connect one of multiple channels to a common channel, one at a time. A simple 4-to-1 multiplexer is shown below.

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Introduction to the 34980A 1

Test 1 Test 2

Test 3

Source 1

Source 2

Source 3

Multiplexers are available in several types:

– One-Wire (Single-Ended) Multiplexers for common LO measurements

– Two-Wire Multiplexers for floating measurements

– Four-Wire Multiplexers for resistance and RTD measurements

– Very High Frequency (VHF) Multiplexers for switching frequencies up to 3 GHz.

When you combine a multiplexer with a measurement device, like the optional internal DMM, you create a scanner. For more information on scanning, see

“Scanning” on page 27.

Matrix Switching

A matrix switch connects multiple inputs to multiple outputs and therefore offers more switching flexibility than a multiplexer. Use a matrix for switching low-frequency (less than 30 MHz) signals only. A matrix is arranged in rows and columns. For example, a simple 3x3 matrix could be used to connect three sources to three test points as shown below.

Keysight 34980A Mainframe User’s Guide 23

In a matrix switch configuration, any one of the signal sources can be connected to any one of the test inputs. Be aware that with a matrix, it is possible to connect

Page 24

1 Introduction to the 34980A

Form C

Form A

CAUTION

more than one source at the same time. Therefore, it is important to make sure that dangerous or unwanted conditions are not created by these connections.

General Purpose Switching

You can use General Purpose (GP) switches to control power connections to your DUTs, control status indicators, or actuate external power relays or solenoids. The GP switches for the 34980A are available in two switch configurations as shown below.

Form C switches are also called Single-Pole, Double-Throw (SPDT) and contain a normally-open (NO) and a normally-closed (NC) contact. Form A switches are also called Single-Pole, Single-Throw (SPST) and contain a normally open (NO) contact, which is either open or closed.

RF and Microwave Switching

A variety of RF and microwave switch modules are also available for the 34980A. This includes RF multiplexers (34941A, 34942A), SPDT switching from dc to 20 GHz (34946A, 34947A), and a switch/attenuator driver module (34945A) that allows you to control switches or attenuators external to the 34980A mainframe.

For more information, see “Introduction to the Plug-In Modules for the 34980A” on page 209.

The 34946A and 34947A support only 24 VDC coil options for the N1810 switches. If the proper voltage option (Opt. 124) is not used, the switches could be damaged. N1810 switches also require option 201 “D” subminiature connectors and option 402 Position Indicators.

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Measurement Input

Analog Input Signal

Signal

Conditioning

Amp

Analog to

Digital

Converter

Main

Processor

The 34980A allows you to combine a DMM (either internal or external) with multiplexer channels to create a scan. During a scan, the instrument connects the internal DMM to the configured multiplexer channels one at a time and makes a measurement on each channel.

Any channel that can be "read" by the instrument can also be included in a scan. This includes any combination of temperature, voltage, resistance, current, frequency, or period measurements on multiplexer channels. A scan can also include a read of a digital port or a read of the totalizer count on the digital modules.

The Internal DMM

A transducer or sensor converts a physical quantity being measured into an electrical signal which can be measured by the internal DMM. To make these measurements, the internal DMM incorporates the following functions:

– Temperature (thermocouple, RTD, and thermistor)

– Voltage (dc and ac up to 300V)

Introduction to the 34980A 1

– Resistance (2-wire and 4-wire up to 100 MΩ)

– Current (dc and ac up to 1A)

– Frequency and Period (up to 300 kHz)

The internal DMM provides a universal input front-end for measuring a variety of transducer types without the need for additional external signal conditioning. The internal DMM includes signal conditioning, amplification (or attenuation) and a high resolution (up to 22 bits) analog-to-digital converter. A simplified block diagram of the internal DMM is shown below.

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1 Introduction to the 34980A

Signal Conditioning, Ranging, and Amplification

Analog input signals are multiplexed into the internal DMM's signal-conditioning section—typically comprising switching, ranging, and amplification circuitry.

– If the input signal is a dc voltage, the signal conditioner is composed of an

attenuator for the higher input voltages and a dc amplifier for the lower input voltages.

– If the input signal is an ac voltage, a converter is used to convert the ac signal

to its equivalent dc value (true RMS value).

– Resistance measurements are performed by supplying a known dc current to

an unknown resistance and measuring the dc voltage drop across the resistor. The input signal switching and ranging circuitry, together with the amplifier circuitry, convert the input to a dc voltage which is within the measuring range of the internal DMM's analog-to-digital converter (ADC).

You can allow the instrument to automatically select the measurement range using autoranging or you can select a fixed measurement range using manual ranging. Autoranging is convenient because the instrument automatically decides which range to use for each measurement based on the input signal. For fastest scanning operation, use manual ranging for each measurement (some additional time is required for autoranging since the instrument has to make a range selection).

Analog-to-Digital Conversion (ADC)

The ADC takes a prescaled dc voltage from the signal-conditioning circuitry and converts it to digital data for output and display on the 34980A front panel. The ADC governs some of the most basic measurement characteristics. These include measurement resolution, reading speed, and the ability to reject spurious noise.

There are several analog-to-digital conversion techniques but they can be divided into two types: integrating and non-integrating. The integrating techniques measure the average input value over a defined time interval, thus rejecting many noise sources. The non-integrating techniques sample the instantaneous value of the input, plus noise, during a very short interval. The 34980A's internal DMM uses an integrating ADC technique.

You can select the resolution and reading speed from 6 digits (22 bits) at 3 readings per second to 4 digits (16 bits) at up to 3,000 readings per second. The integration time, resolution, and number of digits are all interrelated (see “Custom

A/D Integration Time” on page 127 for more details).

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Main System Processor

The main system processor controls the input signal conditioning, ranging, the ADC, and all backplane transactions. The main system processor synchronizes measurements during scanning and control operations. The main system processor uses a multi-tasking operating system to manage the various system resources and demands.

The main system processor also performs Mx+B scaling operations, monitors alarm conditions, converts transducer measurements to engineering units, adds time stamp information to scanned measurements, and stores measurement data in memory.

Scanning

The instrument allows you to combine a DMM (either internal or external) with multiplexer channels to create a scan. During a scan, the instrument connects the DMM to the configured multiplexer channels one at a time and makes a measurement on each channel.

Before you can initiate a scan, you must set up a scan list to include all desired multiplexer or digital channels. Channels which are not in the scan list are skipped during the scan. By default, the instrument automatically scans the list of channels in ascending order from slot 1 through slot 8 (channels are reordered as needed). If your application requires non-ordered scanning of the channels in the present scan list, you can configure a non-sequential scan. Measurements are taken only during a scan and only on those channels which are included in the scan list.

Introduction to the 34980A 1

You can store up to 500,000 readings in memory during a scan and all readings are automatically time stamped. The most recent readings are always preserved in memory. You can read the contents of memory at any time, even during a scan. Reading memory is not cleared when you read it. Each time you start a new scan, the instrument clears all readings stored in reading memory from the previous scan. Therefore, all readings currently stored in memory are always from the most recent scan.

You can configure the event or action that controls the onset of each sweep through the scan list (a sweep is one pass through the scan list):

– You can set the instrument's internal timer to automatically scan at a specific

interval as shown below.

Keysight 34980A Mainframe User’s Guide 27

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1 Introduction to the 34980A

Scan List

Ch 1 Ch 2

Ch 3 Ch 4

Ch 5

Ch 6

Channel Delay

(0 to 60 seconds)

– You can also program a time delay between channels in the scan list (see

“Channel Delay” on page 161).

– You can manually control a scan by repeatedly pressing the Scan (Measure)

key from the front panel.

– You can start a scan by sending a software command from the remote

interface (MEASure? or INITiate command).

– You can start a scan when an external TTL trigger pulse is received.

– You can start a scan when an alarm event is logged on the channel being

monitored.

For more information on scanning, see “Scanning” on page 148.

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Scanning With External Instruments

Input

Channels

Common Terminals

(COM)

External DMM

If your application doesn't require the built-in measurement capabilities of the 34980A, you can order the mainframe without the internal DMM. In this configuration, you can use the 34980A for signal routing or control applications. If you install a multiplexer plug-in module, you can use the system for scanning with an external instrument. You can connect an external instrument such as a DMM to the multiplexer's COM terminals (see below) or you can connect to the 34980A's analog buses.

Introduction to the 34980A 1

Keysight 34980A Mainframe User’s Guide 29

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1 Introduction to the 34980A

ABus1 HI ABus2 HI ABus3 HI ABus4 HI

ABus1 LO ABus2 LO ABus3 LO ABus4 LO

Channel Closed

GND

Channel Advance

(In)

(Out)

Analog Bus Connector

Ext Trig Connector

VM Complete Out Ext Trig In

External

DMM

34980A Mainframe

The figure below shows the external connections required to synchronize the scan sequence between the 34980A and an external instrument. The 34980A must notify the external instrument when a relay is closed and fully settled (including channel delay). The 34980A outputs a Channel Closed pulse. In response, the external instrument must notify the 34980A when it has finished its measurement and is ready to advance to the next channel in the scan list. For more information, see “Scanning With External Instruments” on page 171.

30 Keysight 34980A Mainframe User’s Guide

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The Digital Modules

Bit 0

Bit 7 Bit 8

Bit 15

Bit 16

Bit 23

Bit 24

Bit 31

The 34950A and 34952A digital modules add two additional measurement input capabilities to the system: digital input and event totalize. For more information, see the individual User's Guides included with those modules.

Digital Input

The digital modules have multiple non-isolated 8-bit input/output ports which you can use for reading digital patterns. You can read the live status of the bits on the port or you can configure a scan to include a digital read. Each port has a separate channel number on the module and contains 8-bits. You can combine ports to read 16- or 32-bit words.

Introduction to the 34980A 1

Keysight 34980A Mainframe User’s Guide 31

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1 Introduction to the 34980A

32 Bits

Count +

Count -

Gate

Totalizer

The digital modules have 32-bit totalizer input channels for counting pulses and measuring frequency. You can manually read the totalizer count or you can configure a scan to read the count.

You can configure the totalizer to count on the rising edge or falling edge of the input signal. The minimum rise/fall time for input signals to the totalizer is 5

The maximum count is 4,294,967,295 (2 reaching the maximum allowed value.

You can configure the totalizer to read without affecting the count or reset the count to zero without losing any counts.

- 1). The count rolls over to "0" after

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Control Output

Bit 0

Bit 7 Bit 8

Bit 15

Bit 16

Bit 23

Bit 24

Bit 31

In addition to signal routing and measurement, you can also use the 34980A to provide simple control outputs. For example, you can control external high-power relays using the GP switch modules or a digital output channel.

The Digital Modules

The 34950A, 34951A and 34952A digital modules add two additional measurement control output capabilities to the system: digital output and voltage (DAC) output. For more information, see the individual User's Guides included with those modules.

The digital modules also contain digital input and event totalizer capabilities which are described in more detail on page 31 and page 32.

Digital Output

The digital modules have multiple non-isolated 8-bit input/output ports which you can use for writing digital patterns. Each port has a separate channel number on the module and contains 8-bits. You can combine ports to output 16- or 32-bit words.

Introduction to the 34980A 1

Keysight 34980A Mainframe User’s Guide 33

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1 Introduction to the 34980A

16 Bits

DAC 1

DAC 2

DAC 3

DAC 4

DAC 1H DAC 1L

DAC 2H DAC 2L

DAC 3H DAC 3L

DAC 4H DAC 4L

Voltage (DAC) Output

The 34951A module has four independent, isolated analog output channels that can output dc voltage up to (Digital-to-Analog Converter) channel can be used as a programmable voltage

source for analog input control of other devices. A simplified diagram is shown below.

16V or dc current up to ± 20 mA. Each DAC

You can set the output voltage to any value between -16 Vdc and +16 Vdc, in 500

V steps on any or all four channels.

You can set the output current to any value between -20 mA and +20 mA, in 630 nA steps on any or all four channels.

34 Keysight 34980A Mainframe User’s Guide

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The Actuator / General-Purpose Switches

300

100

120

.2 .5

You can think of the 34937A, 34938A, and 34939A modules as a control outputs because they are often used to control external power devices. For example, the 34937A provides 28 independent, isolated Form C (SPDT) switches. Each channel can switch up to 300V dc or ac rms. Each switch can also switch up to 1A dc or ac rms up to 60W maximum. For example, the maximum current that you can switch at 120V is 0.45A as shown below.

For control applications, the GP modules have the following advantages:

Introduction to the 34980A 1

– Higher voltage and power rating than the digital output channels.

– The actuator switches can also be used to control power devices.

When used with high-power devices, however, it is critical that you provide protection to the switch from capacitive and inductive loads to ensure maximum relay life.

Keysight 34980A Mainframe User’s Guide 35

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1 Introduction to the 34980A

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36 Keysight 34980A Mainframe User’s Guide

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Keysight 34980A Multifunction Switch/Measure Unit Mainframe User’s Guide

2 Getting Started

Front Panel at a Glance 38 Rear Panel at a Glance 40 Rear Panel Connector Pinouts 42 Annunciator Display Indicators 44 Installing and Connecting Modules 46 Instrument Rack Mounting 55 Operating the 34980A from the Front Panel Keyboard 58 Connecting the 34980A to Your Computer 73 Communicating with the 34980A 83 Operating the 34980A using the Integrated Web Browser Interface 84 34980A Documentation Map 95

This chapter provides an overview of the 34980A’s controls, displays and connections; module assembly, wiring and installation instructions; and some basics of operation with examples. It is designed to allow you to gain quick familiarity with the instrument and start using it.

Page 38

2 Getting Started

CAUTION

For proper instrument function, Channel monitor must be turn OFF when the state is stored and Auto recall is enabled. If the Channel monitor is turned ON, the front panel may freeze. If the front panel is forzen, all plug-in modules must be removed and the auto-recall function turned OFF to restore the instrument back to its initial working state.

Front Panel at a Glance

1 The On/Standby switch is used to toggle the 34980A between On and Standby modes only. To turn the unit off, remove

the power cord.

2 The Utility key accesses menus to configure Remote I/O (LAN, GPIB, and USB) operation, set Date and Time, and

configure other system-related instrument parameters.

3 The Store/Recall key allows you to save and recall up to six instrument setups.

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Getting Started 2

4 Control keys directly control module actions.

5 The number keypad is used for entering numerical characters.

6 The exponent entry key is used to enter the exponent during a numerical entry.

7 The Cancel key exits any menu without saving changes.

8 Arrow keys move the cursor position in an entry.

9 The knob provides for entry of alphanumeric characters, selecting slots or channels, and navigating menus.

10 The Enter key steps you through a menu or saves number entries.

11 Running a program puts the display into “remote” and disables the front panel keys. Local takes you out of “remote”

mode and enables the front panel keys.

12 Configure keys select functions and set function parameters.

13 Measure keys execute and monitor measurements. Depending on which measurement key you use, you can have

complete/direct control over the switching and measurement operation, or you can have the 34980A automatically control these to capture the desired data.

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2 Getting Started

Safety Symbols Located on Rear Panel

Warning. Risk of electric shock

Caution. Refer to accompanying descriptions in User’s Guide

Alternating Current

Mainframe Chassis Ground

Rear Panel at a Glance

1 Access to Analog Buses (shown with removable cover installed). For pinouts, see page 43.

2 Module installed in slot 1

3 Slot identifier

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Getting Started 2

4 Module ground screw

5 Slot cover over slot 2

6 AC power connector

7 LAN connector (10Base T/100Base Tx)

8 USB 2.0 connector

9 External trigger input. For pinouts, see page 42.

10 Internal DMM option mark. If you ordered the internal DMM option, the circle is marked black.

11 IEEE 488.2 GPIB Connector

12 Chassis ground screw

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2 Getting Started

Rear Panel Connector Pinouts

External Trigger/Alarms Connector (Male D-Sub)

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Analog Bus Connector (Female D-Sub)

Getting Started 2

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2 Getting Started

ERROR

Annunciator Display Indicators

Display Ind icator Definition

LAN Lit when communicating with the 34980A over LAN.

USB Lit when communicating with the 34980A over USB.

GPIB Lit when communicating with the 34980A over GPIB.

ABUS [1234] Indicates Analog Bus (ABus) connectivity. Normally, this shows the designated ABus connected on

any module in the mainframe. During a scan, if ABus 1 and ABus 2 are both indicated, they will be used at some point during that scan.

When lit, an error has been generated and is in the error queue.

Rmt Indicates Remote mode is in use. Running a program puts the display into “remote” mode and

disables the front panel keys. Pressing the LOCAL button takes you out of “remote” mode and enables the front panel keys.

Safety Interlock Indicates an ABus Safety Interlock. When lit, at least one terminal block or cable has been removed

from the D-sub connector of a module. For more information, see page 131 and the User’s Guides for the appropriate Multiplexer Modules.

Trig Lit when the 34980A is waiting for an external or manual trigger during scans.

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Getting Started 2

HOT

Display Ind icator Definition

Indicates an over-temperature condition. When lit, one or more general purpose (34937A/34938A) modules have reached their over-temperature limits.

ALARM (H1234L) A HI or LO alarm condition has occurred on the indicated alarms.

Alarms are enabled on the displayed channel.

Mx+B Scaling is enabled on the displayed channel. This appears on display after you have selected the

scaling function via the front panel or remote interface.

4W A 4-wire measurement is specified on the displayed channel. This appears on the display after you

have selected the 4-wire function via the front panel or remote interface.

OC Lit when Offset Compensation has been specified for a given measurement. This appears on the

display after you have selected the offset compensation function via the front panel or remote interface. For more information, see “Offset Compensation” on page 142

A measurement is in progress.

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2 Getting Started

WARNING

CAUTION

Installing and Connecting Modules

For most applications, prior to using the 34980A you will select and install modules, and make connections with terminal blocks or cabling. The following sections illustrate module and terminal block installation.

Removing a Slot Cover

Your 34980A is shipped from the factory with one slot uncovered and the remaining seven slots covered (the illustration below shows a module already inserted in Slot 1). When you are ready to install additional modules in the seven remaining slots, you must first remove its slot cover. Using a flat blade screwdriver, pry each side of the slot cover until the cover releases from the slot.

When any slot covers are removed, hazardous voltages may be exposed on the analog bus connectors.

Install current limiting devices between high energy sources and the module inputs.

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CAUTION

Do not block air intake or exhaust vents at the sides of the instrument.

NOTE

With the slot cover removed, you can now install a module in this slot.

For detailed examples of the slot and channel numbering scheme used in the 34980A, see “Slot and Channel Addressing Scheme” on page 213.

Installing a Module

Applies to the multiplexer and matrix modules only — The Safety Interlock feature prevents connections to the Analog Buses from a module if a terminal block or properly-wired cable is not connected to that module. If proper connections are not present, the Analog Bus relays will be d isabled on that module and the front panel Safety Interlock display annunciator will turn on.

Installing a Module for Use with Cables

Getting Started 2

If you are planning to use an optional terminal block to connect your external wiring, skip to the next section. If you are planning to use cables for your external

connections, follow the procedure below to install a plug-in module:

1 Install the module into a mainframe slot until it fully seats with the backplane

connector.

2 Using a Pozidriv #1 screwdriver, tighten the two screws to secure the module

in the mainframe. Installation is now complete.

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2 Getting Started

Installing a Module for Use with Terminal Blocks

All of the 34980A plug-in modules, except the RF and microwave modules, can be used with a compatible terminal blocks (optional accessories 349xxT), which provide screw terminals or solder cup connections for your external wiring. If you plan to use an optional terminal block, follow the procedure below to install the module:

1 Using a Pozidriv #1 screwdriver, remove the panhead grounding screw located

between the module connectors.

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Getting Started 2

2 Remove the two flathead screws from the support sleeve.

3 Fit the terminal block support sleeve against the module so the openings on

the sleeve line up with the connectors and the center screw hole as shown.

4 Replace the panhead screw. Then replace and tighten the two flathead screws

to secure the sleeve to the module.

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2 Getting Started

WARNING

NOTE

5 Install the module into a mainframe slot until it fully seats with the backplane

Wiring and Installing a Terminal Block

If you are planning to use an optional terminal block with your plug-in modules, follow the next two procedures to connect your external wiring and install a terminal block.

connector. Using a Pozidriv #1 screwdriver, tighten the two screws to secure the module in the mainframe. Installation of the support sleeve is now complete.

Before you begin this task, make sure you have disconnected power from all external field wiring you will be connecting to the terminal block.

For plug-in module pinout diagrams and additional information, refer to the User's Guide(s) shipped with the module(s).

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Getting Started 2

Wiring a Terminal Block

1 To remove the terminal block cover, insert a screwdriver through the hole in

the cover as shown. Gently push the tab in the direction of the arrow.

2 While pushing the tab (Step 1), lift the clear plastic cover from the edge near

the D-sub connectors. Slide the cover from under the tab holders and remove the cover.

3 Make connections to the individual terminals as appropriate. Use a suitable

wire type, gauge and insulation for your application (typical is 20 AWG; the terminals can accommodate a maximum of 18 AWG). Use a 2.5 mm cable tie as shown for additional strain relief.

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2 Getting Started

Wire Size: 20 AWG (typical); 18 AWG (max)

6 mm

4 To replace the terminal block cover, slide the cover tabs into the tab holders

on the terminal block as shown. Press down on the cover until it snaps securely into place. Continue with the next section to install the terminal block to the module.

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Getting Started 2

Terminal Block

Support Sleeve

34980A Mainframe

Installing a Terminal Block

After making external wiring connections to a terminal block, follow the procedure below to fasten the block to a plug-in module.

1 Push the levers on the terminal block to the fully-open position as shown

below. Then slide the terminal block into the instrument-mounted support sleeve...

…until the terminal block stops at the two points indicated by the arrows below.

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2 Getting Started

2 Carefully rotate the levers upward as shown…

…until both levers are locked in the closed position.

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Getting Started 2

Instrument Rack Mounting

The Keysight 34980A Mainframe can be mounted in a standard 19 inch instrument rack or in an Keysight rack cabinet. Orientation can be either forward mounted (front panel facing the front of the cabinet) or reverse mounted (rear panel facing the front of the cabinet).

Either method will require a set of cabinet rails to support the instrument’s weight and planned orientation, and a set of mounting brackets to secure the unit to the cabinet.

Keysight-supplied rail kits are available for Keysight cabinets only; for all other racks contact the rack’s vendor. The following rack mounting kits and rail kits are available from Keysight:

Keysight Part Kit Contents

Y1130A Rack Mount Kit 2 short brackets for forward mounting, 2 longer brackets for reverse mounting, and

associated hardware

Standard Rack Mount Kit, part number 5063-9214

2 short brackets for forward mounting and associated hardware

E3663A Basic Rail Kit 2 rails and associated hardware for forward mounting in an Keysight cabinet

E3664AC Third Party Rail Kit 2 rails and associated hardware for reverse mounting in an Keysight cabinet

–For forward rack mounting, use the short brackets from the Keysight Standard

rack mount kit or Y1130A Rack Mount Kit. For Keysight rack cabinets, use the E3663A Basic Rail Kit.

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2 Getting Started

–For reverse rack mounting use the longer brackets (see figure below) from the

Keysight 34980A (shown with Reverse Rack Mount brackets installed)

Y1130A Rack Mount Kit. For Keysight rack cabinets, use the E3664AC Third Party Rail Kit.

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425.6 mm (16.76 in)

367.7 mm (14.48 in)

101.9 mm (4.01 in) or

70.4 mm (2.78 in)

Getting Started 2

Keysight 34980A Mainframe User’s Guide 57

Keysight 34980A Dimensions (shown with Reverse Rack Mount brackets installed)

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2 Getting Started

NOTE

CAUTION

Operating the 34980A from the Front Panel Keyboard

This section gives an overview on operating the 34980A from the front panel keyboard. The Front Panel Menu Reference subsection briefly describes the menus accessed by the front panel keys, and the subsequent subsections provide examples of menu navigation.

Before you can operate the front panel keyboard, connect the power cord to the 34980A and turn on the power. If the instrument does not power on properly, contact Keysight Technologies Technical Support.

At power on, all segments on the front panel are displayed and all lighted keys temporarily turn on. The front panel is ready for operation when the keys are no longer lit and the green channel field on the display shows the first slot in which a module is installed.

Front Panel Menu Reference

This subsection provides an overview of the top two levels of menus you can access from the front panel. The menus are designed to sequentially guide you through all parameters required to configure a particular function or operation.

The Store/Recall Menu

– Store up to six instrument states in non-volatile memory;

– Assign a name to each storage location;

– Recall stored states, the power-down state, the factory reset state, or a preset state.

Use to store and recall instrument states. You can:

The Utility menu U

se to configure system-related instrument

parameters. You can:

– Connect and configure the 34980A to use over LAN, GPIB, or USB;

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Getting Started 2

– Set the real time clock and calendar;

– Set the radix character and thousand separator;

– Enable/disable the internal DMM;

– Query and update the firmware revisions for the mainframe and its modules.

Measurement configuration parameters are set using the Configure key group (see descriptions on page 59)

Configure Key Group

Use these menus to set measurement parameters.

The DMM Menu

– Set the internal DMM’s measurement function (AC volts, DC volts, AC

current, DC current, 2-wire ohms, 4-wire ohms, temperature, frequency, and period)

– Set measurement function parameters

The Channel Menu

– Set channel measurement function (AC volts, DC volts, AC current (34921A

only), DC current (34921A only) 2-wire ohms, 4-wire ohms, temperature, frequency, and period)

– Set measurement function parameters

The Scan Menu

– Set trigger-in parameters

– Set sweep count

– Set sample count

The Sequence Menu

– View a sequence command string

– Execute the sequence

– Delete sequence definitions

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2 Getting Started

The Module Menu

– Open all relays

– Clear all measurement functions

– Clear channel labels

– Configure external trigger and clock (applies only to 34951A module)

– Set trace or level mode (applies only to 34951A module)

– Set waveform parameters (applies only to 34951A module)

The View Menu

– View errors and alarms

The Ad vanced Key

The Alarm Menu

– Select one of four alarms to report alarm conditions on the displayed

This key is reserved to operate advanced functions in a future firmware release. When activated, you will be notified in the release notes accompanying the enabling firmware revision.

channel

– Configure a high limit, a low limit, or both for the displayed channel

– Select the slope (rising or falling edge) for the four alarm output lines

The Exit Menu Key

Press to leave the current menu, saving all changes made in that menu

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Menu Example 1: Setting the Time and Date

DATE / TIMEREMOTE I/O

Use the knob to scroll through the choices on the same level.

Also use the knob to enter alphanumeric characters.

Use the arrow keys to move the display cursor position.

Utility

. . .

Utility

Additional Choices

YEAR

and

MONTH

MINUTE

and

In this example, you will learn the fundamentals of using the 34980A front-panel menus by setting the date and time. Begin by pressing the Utility menu key, then use the Utility key, knob and arrow keys to navigate the menu as shown below. Follow the menu prompts as they are displayed.

Getting Started 2

A list of menu navigation hints is provided below:

– The navigation structure of the front panel menus is hierarchical, and the

menus are self-guiding; as you use the front panel, you may be prompted to enter specific parameters. The menu key in use (e.g. Utility) will be backlit to indicate that you must select a parameter or that additional parameters are required in that menu.

– To select another choice (other than the one displayed) at a given menu level,

turn the knob.

– To select a displayed parameter and move to the next parameter, press either

the lighted menu key (e.g. Utility) or ENTER.

– To save changes, keep other parameters at their same value, and immediately

Keysight 34980A Mainframe User’s Guide 61

exit the menu, press EXIT MENU.

– To exit a menu without saving any changes, press CANCEL (located next to the

number keypad).

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2 Getting Started

– To select slots and channels so they appear in the green channel field, use the

– To move the display cursor position, use the left and right arrow keys.

– When you have entered all required parameters, the lighting on the menu key

knob. To enter alphanumeric characters, use the knob. To enter numbers, use the number keypad or the knob.

will turn off.

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Getting Started 2

Menu Example 2: Opening and Closing Channel Relays

This example is applicable for use with any of the multiplexer modules (34921A, 34922A, 34923A, 34924A, or 34925A); it illustrates a 34921A module installed in slot 1.

1 Using the number keypad, press 1 to select the slot containing the multiplexer

module.

2 Select channel 27 on the module by pressing 2 and then 7.

3 Press the lighted ENTER key to complete your channel selection.

4 With channel 1027 selected (shown in green channel field on display), toggle

the Close and Open keys to close and open the selected channel. Note that the display shows OPEN or CLOSED, indicating the status of the channel.

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2 Getting Started

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Using the Measure Keys

In Menu Examples 2 and 3 (the following two subsections), you will use keys in the front-panel Measure group. The three keys in the Measure group control the initiation of measurements (conversely, the menu keys in the Configure group allow you to set parameters for measurements). Depending on which measurement key you select, you can have complete/direct control over the switching and measurement operations, or you can allow the 34980A to automatically control the measurement to capture the desired data.

The three keys in the Measure group are:

Getting Started 2

– DMM

– Channel - When pressed, the 34980A controls the relays

– Scan - When pressed, the 34980A controls all the relays

When pressed, the internal DMM takes continuous measurements on whatever signal you have routed to it. This mode allows the most flexibility, but you must manually control the opening and closing of relays.

needed for the internal DMM to make continuous measurements on a single selected channel. The measurement configuration used for a particular channel (as specified in the Channel menu in the Configure group) is stored and recalled whenever you select that channel.

required to make a series of sequential measurements, even across multiple channels with unlike measurement functions. Scan takes the measurements and stores the results in volatile memory.

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2 Getting Started

Menu Example 3: Configuring the DMM for a Measurement

This example uses the internal DMM for a measurement. It can be used with any of the multiplexer modules (34921A, 34922A, 34923A, 34924A, or 34925A). If you have disabled your internal DMM, don't have one installed in your 34980A, or are not using a multiplexer module, skip this example.

1 Make sure you have a multiplexer module installed in slot 1. Select any

2 Within the Configure key group, press DMM to set the measurement

channel on this module (the channel number is shown in green channel field on display).

parameters for the internal DMM. Note that the DMM key lights.

3 Using the knob to navigate through the menu choices, select the AC VOLTS

function.

4 Press the lighted DMM key to accept the ac voltage function.

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Getting Started 2

5 Using the knob, select 10V, which indicates the range parameter for ac

voltage.

6 Press EXIT MENU to save your selections (ac voltage, 10 volt range) and

immediately exit the menu. All unmodified parameters within the menu remain unchanged.

7 Within the Measure key group, press DMM.

Note that the key lights and continuous ac voltage measurements are made using the internal DMM.

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2 Getting Started

8 To stop the measurements, press DMM (in the Measure key group).

During This Tutorial Example:

– You configured the internal DMM for ac voltage measurements,

– You started measurements, viewed continuous measurement results, and

stopped the measurements.

Since you didn't open or close any channels, no module or Analog Bus relays were exercised in this example. The internal DMM acted as a stand-alone instrument and measured whatever ac voltages happened to be present on the Analog Buses. Pressing DMM (in the Measure key group) also allowed you to continuously monitor measurements on the front panel.

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Getting Started 2

Menu Example 4: Configuring a Channel for a Measurement

1 Make sure you have a multiplexer module installed in slot 1.

2 Using the knob to navigate or using the number keypad, select Channel 1016

(the green channel field displays 1016).

3 Press Channel (in the Configure key group) to access the configure menu for

Channel 1016. Note that the Channel key lights while in the menu.

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2 Getting Started

4 Using the knob to navigate through the menu choices, select the DC VOLTS

5 Press the lighted Channel key to select this function and proceed to the next

6 Use the knob to select the 100 mV range for the dc voltage function.

7 Continue pressing the lighted Channel key until CHANNEL LABEL is shown.

function.

parameter in the menu.

8 At the CHANNEL LABEL choice, use the knob (to select alphanumeric

characters) and the arrow keys (to select the cursor position) to enter a custom channel label.

9 Press the lighted Channel key to save the assigned channel label and all other

changes you made.

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Getting Started 2

10 Press the Channel key (in the Measure key group). Note that the key lights, the

required relays automatically close, and dc voltage measurements begin.

11 To stop the continuous measurements, press Channel again. Note that as you

press Channel, you will hear the relays automatically opening.

12 Using steps 1 through 6 on the previous page, set the following configuration

for Channel 1014 (for this example, don't change any other measurement parameters):

– Channel: 1014

– Measurement Function: AC Volts

–Range: 1V

13 Press EXIT MENU to accept the new settings and retain all other parameters in

this menu.

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14 With Channel 1014 selected, press Channel (in the Measure key group). The

15 With the Channel key still lighted, turn the knob to display channel 1016. You

16 With the Channel key still active, turn the knob between channels 1016 and

17 Press Channel so the light is off. Notice that Monitoring is now turned off, but

During This Tutorial Example:

– You configured channel 16 for dc voltage measurements, then started, viewed

– You configured channel 14 for ac voltage measurements, then started, viewed

Channel key lights, the required relays automatically close, and measurements begin.

should see measurements start for DC VOLTS (your previously configured function for channel 16).

1014 to monitor the measurement results for each channel. As you pass Channel 1015, which is not configured for a measurement, notice that the associated channel relay is open and measurement is off.

you can continue to view the measurement parameters on channels 1014 and

1016.

results, and stopped continuous dc voltage measurements on channel 16.

results, and stopped continuous ac voltage measurements on channel 14.

– You scrolled between channels 14 and 16 to alternatively start, monitor, and

stop continuous measurements on the channels.

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Connecting the 34980A to Your Computer

NOTE

To easily configure and verify an interface connection between the 34980A and your PC, you can use the Keysight IO Libraries Suite or an equivalent.

– The Keysight IO Libraries Suite—along with installation instructions—is

provided on the Automation-Ready CD, which is shipped with your 34980A.

– Previous versions of the Keysight IO Libraries software are also available. For

more information and to download the current or an earlier version from the Web, go to www.keysight.com/find/iolib.

– The procedures in this section refer to the Connectivity Guide (Keysight

Technologies USB/LAN/GPIB Interfaces Connectivity Guide). If you have installed the IO Libraries Suite, you can access the Connectivity Guide via the Keysight IO Libraries Control icon. Or, you can access the Connectivity Guide via the Web at www.keysight.com/find/connectivity.

The Keysight 34980A supports GPIB, USB, and LAN interfaces. All three interfaces are enabled at power on. The corresponding front-panel annunciator turns on whenever there is activity on the remote interface.

Getting Started 2

GPIB Interface

and connect it to your PC using a GPIB cable (sold separately).

USB Interface

connection. Just connect the instrument to your PC using a USB 2.0 cable (sold separately).

LAN Interface

enable network communication over the LAN interface (10BaseT/100BaseTx). You may need to set several LAN configuration parameters. A crossover LAN cable is shipped with your instrument.

This section provides basic instructions for establishing a GPIB, USB or LAN connection between the 34980A and a PC. For detailed configuration instructions for GPIB or LAN, see “Remote Interface Configuration” on page 105.

Keysight 34980A Mainframe User’s Guide 73

You need only set the GPIB address for the instrument

There is nothing to configure on your instrument for a USB

By default, DHCP is enabled on the instrument, which may

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2 Getting Started

Example Switch Connection

Ethernet Hub or Switch

Example Direct Connection

To Site LAN

Typical Site LAN Networks

Instrument

Instrument Instrument Instrument Instrument

Connecting Over LAN

Selecting the LAN network type

You can connect and configure your 34980A for Site LAN or Isolated (non-site) LAN operation.

–A Site LAN network is defined as a local area network (LAN) in which

computers and LAN-enabled instruments are connected to a site LAN (workgroup LAN, Intranet, or enterprise LAN) via optional routers, hubs, and/or switches.

–An Isolated LAN network is defined as a local area network (LAN) in which

computers and LAN-enabled instruments are not the crossover cable provided with the 34980A to make a direct connection between the 34980A and your computer. Crossover cables are also supported by many newer LAN switches or routers.

74 Keysight 34980A Mainframe User’s Guide

connected to a site LAN. Use

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Getting Started 2

Example Switch Connection

Ethernet Hub or Switch

Example Direct Connection

CAT5 Crossover Cable

Typical Isolated (Non-Site) LAN Networks

Instrument

Instrument Instrument InstrumentInstrument

To Site LAN

Example Site LAN Connection

To Network Interface Card (NIC)

To LAN Port

34980A

The diagrams above show examples of typical site LAN and isolated LAN networks. Select the LAN network type that you will use to connect the 34980A to your computer. Then follow the corresponding procedures shown on “Connecting Via

Site LAN” on page 75 or “Connecting Via Isolated (Non-Site) LAN” on page 78.

Connecting Via Site LAN

1 Using a standard LAN patch cable (not supplied), connect your computer and

the 34980A to LAN wall outlets.

Keysight 34980A Mainframe User’s Guide 75

2 Make sure power is applied to your computer and verify that the operating

system is fully booted. Then apply power to the 34980A.

3 Using the flow diagram shown below, navigate through the 34980A

front-panel Utility menu. At the IO PORT menu, select LAN. At the LAN

SETTINGS menu, select MODIFY and verify that DHCP is ON (ON is the factory default state). If your LAN does not support DHCP, refer to the Connectivity

Guide.

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2 Getting Started

ENABLE LAN

NO YES

(Use knob to select YES)

LAN SETTINGS

VIEW MODIFY

(Use knob to make selection)

DHCP

OFF ON

(Use knob to select ON)

EXIT

Utility

UtilityUtility

LAN STATUS

DHCP BOOT

(Use knob to select

IP_ADDRESS)

IP_ADDRESS

xxx.xxx.xx.xx

Utility

EXIT

Utility

Remote I/O

I/O PORT

LAN GPIB USB

(Use knob to select LAN)

Utility

Front Panel Menu

Navigation Flow Diagram

Site LAN Connection

to Configure a

76 Keysight 34980A Mainframe User’s Guide

4 Press EXIT MENU, which saves any changes and defaults all other parameters

in the Utility menu.

5 Wait for the DHCP server to assign a valid address; this operation can take

between 30 seconds and one minute to complete).

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Getting Started 2

6 From the Utility menu (see Navigation Flow Diagram on page 76), navigate to

the LAN SETTINGS choice and select VIEW. Using the flow diagram as a guide, view the instrument's IP address and other LAN settings. Write down the IP address in the space below:

34980A IP Address: ___________________________

7 Press EXIT MENU.

8 Now you can use the integrated 34980A Web Browser Interface to access and

control the instrument. See “Launching the Web Interface” on page 85 for more information.

9 If you plan to program the instrument over LAN using other software:

– Make sure you have installed the required I/O software on your computer.

–If you will be using the Keysight IO Libraries Suite, use its Connection

Expert utility to add the 34980A and verify a connection. When identifying the instrument, it is easiest if you use the IP address noted in step 6 above.

– For an overview on programming instruments via LAN, refer to the

Connectivity Guide.

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2 Getting Started

CAT5 Crossover Cable

Example Isolated (Non-Site) LAN Connection

34980A

To Network Interface Card (NIC)

To LAN Port

Connecting Via Isolated (Non-Site) LAN

1 Using the CAT5 crossover cable provided with the 34980A, connect your

2 Make sure power is applied to your computer and verify that the operating

computer to the 34980A.

system is fully booted. Then apply power to the 34980A.

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3 Using the flow diagram below, navigate through the 34980A front-panel Utility

ENABLE LAN

NO YES

(Use knob to select YES)

LAN SETTINGS

VIEW MODIFY

(Use knob to make selection)

DHCP

OFF ON

(Use knob to select OFF)

EXIT

Utility

UtilityUtility

LAN STATUS

DHCP BOOT

(Use knob to select

IP_ADDRESS)

IP_ADDRESS

xxx.xxx.xx.xx

Utility

EXIT

Utility

Remote I/O

I/O PORT

LAN GPIB USB

(Use knob to select LAN)

Utility

Front Panel Menu

Navigation Flow Diagram

Isolated LAN Connection

to Configure an

menu. At the IO PORT menu, select LAN. At the LAN SETTINGS menu, select MODIFY and set DHCP to OFF (note that ON is the factory default state).

Getting Started 2

Keysight 34980A Mainframe User’s Guide 79

4 Press EXIT MENU, which saves any changes and defaults all other parameters

in the Utility menu.

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2 Getting Started

5 From the Utility menu, navigate to the LAN SETTINGS choice and select

6 Press EXIT MENU.

7 Now you can use the integrated 34980A Web Browser Interface to access and

8 If you plan to program the instrument over LAN using other software (e.g.

Connecting Over GPIB

VIEW. Using the flow diagram ON page 78 as a guide, view the instrument's IP address and other LAN settings. Write down the IP address in the space below:

34980A IP Address: ___________________________

control the instrument. See “Launching the Web Interface” on page 85 for more information.

Keysight IO Libraries Suite, BenchLink Data Logger Pro):

– Make sure you have installed the required I/O software on your computer.

–If you will be using the Keysight IO Libraries Suite, use its Connection

Expert utility to add the 34980A and verify a connection. When identifying the instrument, it is easiest if you use the IP address noted in step 5 above.

– For an overview on programming instruments via LAN, refer to the

Connectivity Guide.

1 Make sure you have installed the required I/O software and device drivers on

your computer.

2 Follow the instructions from your GPIB interface card’s vendor to install and

configure the GPIB hardware in your computer.

3 Connect a GPIB cable (not provided) between your computer and the 34980A.

4 Make sure power is applied to your computer and verify that the operating

system is fully booted. Then apply power to the 34980A.

5 Using the flow diagram below, navigate through the 34980A front-panel Utility

menu. At the IO PORT menu, select GPIB. At the ENABLE GP-IB submenu, select YES.

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Getting Started 2

Remote I/O

I/O PORT

GPIB USB LAN

(Use knob to select GPIB)

Utility

ENABLE GP-IB

NO YES

(Use knob to select YES)

GPIB ADDRESS

Factory Address: 9 (Use knob and arrow keys to select different address)

Utility

Front Panel Menu

to Configure a

Navigation Flow Diagram

GPIB Connection

6 Press Utility again to display the GPIB Address. The 34980A is shipped from

the factory with a default GPIB ADDRESS of 9. To change the address, use the know or arrow keys.

7 Press Utility again to save any changes and exit the Utility menu.

8 Use the Connection Expert utility of the Keysight IO Libraries Suite to add the

34980A and verify a connection. If you have installed any other I/O software, refer to documentation included with that software.

9 Now you can use various programming environments to control the 34980A.

For an overview on programming instruments via GPIB, refer to the Connectivity Guide.

Connecting Over USB

Keysight 34980A Mainframe User’s Guide 81

1 Make sure you have installed the required I/O software and device drivers on

your computer.

2 Connect a standard USB cable between your computer and the 34980A.

3 Make sure your computer and its operating system is fully booted. Then apply

power to the 34980A.

4 The Found New Hardware Wizard will automatically start and guide you

through configuring the 34980A as a USB device. To install the software automatically, accept all defaults.

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2 Getting Started

NOTE

Remote I/O

I/O PORT

GPIB USB LAN

(Use knob to select USB)

Utility

ENABLE USB

NO YES

(Use knob to select YES)

Utility

CONNECT

STRING

XXXXXX

Utility

REBOOT REQUIRED FOR NEW SETTINGS

Cycle power to the 34980

to complete USB connection

Front Panel Menu

to Configure a

Navigation Flow Diagram

USB Connection

If you installed the Keysight IO Libraries software, this also installed the required low-level software drivers. Therefore, you do not need to insert the CD when the Found New Hardware Wizard instructs you to do so.

5 Using the flow diagram below, navigate through the 34980A front-panel Utility

menu. At the IO PORT menu, select USB. At the ENABLE USB submenu, select YES.

82 Keysight 34980A Mainframe User’s Guide

6 Press Utility. The 34980A will display a two-line status message, with the

34980A’s connect code for USB.

7 Press Utility one more time to save any changes and exit the Utility menu. If

you made a change, the message REBOOT REQUIRED FOR NEW SETTINGS will be displayed.

8 Cycle power to the unit. When it reboots, the USB connection will be enabled.

9 Use the Connection Expert utility of the Keysight IO Libraries Suite to add the

34980A and verify a connection. If you have installed any other I/O software, refer to documentation included with that software.

10 Now you can use various programming environments to control the 34980A.

For an overview on programming instruments via USB, refer to the Connectivity Guide.

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Communicating with the 34980A

You can use either instrument drivers or SCPI (Standard Commands for Programmable Instruments) commands — in any programming environment — to communicate with the 34980A. However, Keysight has designed drivers that work best in recommended environments, as shown in the table below. To install drivers and their associated Help files, refer to the 34980A Product Reference CD shipped with your 34980A. This CD also contains a collection of example programs for your reference.

Getting Started 2

Programming Environment

Microsoft® Visual C® version 6.0, Visual C++®, and ANSI C

Microsoft

Microsoft® Visual Studio®.NET for C#, C, and Visual Basic

Keysight VEE IVI-COM

National Instrument’s LabVIEW

National Instrument’s LabWindows/CVI®

Visual Basic® version 6.0

Driver

IVI-C, IVI-COM

IVI-COM

LabVIEW® Plug and Play

(native mode), IVI-C

IVI-C

As discussed in “Measurement Software” on page 15, several graphic tools are available for remote programming and control of the 34980A in addition to basic use of SCPI. These include the BenchLink Data Logger software (Pro and standard versions) and the Web Browser Interface.

For a brief introduction to the BenchLink Data Logger software, see “Data Logging

and Monitoring” on page 15. The Data Logger software, and software support are

supplied with the 34980A on the 34980A Product Reference CD.

The Web Browser Interface is described in the subsequent subsections.

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2 Getting Started

NOTE

Operating the 34980A using the Integrated Web Browser Interface

You can use the 34980A's Web Browser Interface for remote LAN access and control (configuration, troubleshooting and monitoring) of the instrument via a Java-enabled Web browser, such as Microsoft® Internet Explorer.

This section provides an overview of the 34980A Web Interface. While it works with the 34980A mainframe and all installed plug-in modules, the 34921A multiplexer module is used for illustration purposes.

The following tasks assume you have configured the 34980A for LAN communication and have verified connection to a LAN network. See “Connecting

Over LAN” on page 74 for more information.

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Launching the Web Interface

Click here for Help

1 Open your Internet browser from your computer.

2 From the Tools>Internet Options menu, navigate to Connections (exact

navigation depends on your browser), and then select LAN Settings.

Getting Started 2

Keysight 34980A Mainframe User’s Guide 85

3 From the LAN Settings dialog, select/activate the bypass proxy server for local

addresses (exact terminology depends on your browser).

4 Exit the Internet Options window.

5 Enter the IP address of the 34980A in the Address field and press return. Either

refer to the IP address you wrote on page 77 or page 80, or use the 34980A's front panel Utility menu to read the IP address.

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2 Getting Started

NOTE

6 After entering the appropriate IP address, the 34980A Web Interface's

The procedures in the following subsections will help you understand tasks commonly performed using the 34980A's Web Interface. For additional help on using the interface, click the ?Help with the Page tab on the lower-left corner of the Web Interface window.

Welcome Window should appear.

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Displaying the Browser Web Control Page

1 From the Welcome Window, click the Browser Web Control tab on the left

side of the window to display the Browser Web Control page.

Getting Started 2

Keysight 34980A Mainframe User’s Guide 87

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2 Getting Started

2 From this page, you can view and modify the configuration of the modules

Selecting the “Allow Full Control” Mode

Select the Allow Full Control radio button as shown. Once enabled, this mode allows you to open and close channel relays and modify the state of the installed modules.

currently installed in the 34980A.

When you first launch this page, the configuration of the module in the lowest numbered slot is shown (shown in bold text). To view the configuration of a different module, click on the desired module name from the list (slots are numbered 1 through 8).

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Setting a Web Browser Password

If desired, you can control access to the 34980A Web Interface using password protection. As shipped from the factory, no password is set. To set a password (available from the front panel only), navigate to the WEB PASSWORD menu selection from the 34980A front panel, as follows:

Utility > REMOTE I/O > LAN > LAN SETTINGS > MODIFY > . . . WEB PASSWORD

Use the front panel knob and control keys to enter your password, then press Exit Menu to save it.

Once specified, this password must be provided to transition from the Observe Only mode to the Allow Full Control mode

Getting Started 2

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2 Getting Started

NOTE

Closing and Opening Channel Relays

You must be in the Allow Full Control mode to close and open channels.

1 To close a channel, left-click directly on the graphic of the desired relay.

To open a closed channel, click again on the relay graphic.

2 You can also open and close the four Analog Bus relays by left-clicking the

graphics of these relays. The Analog Bus Overview display located near the top of the window shows the slot-by-slot status of the four Analog Buses.

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Getting Started 2

NOTE

Modifying the Channel Configuration

You must be in the Allow Full Control mode to modify the channel configuration.

1 To modify the measurement configuration of individual channels (e.g., add

channel labels, select function and range, etc.), right-click directly on the graphic of the desired relay. The Channel Configuration dialog box for that channel is displayed.

2 As an example, change the label on Channel 1001 to DUT_1. Click OK.

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2 Getting Started

NOTE

Sending SCPI Commands Via the Web Interface

You must be in the Allow Full Control mode to send instrument commands to the 34980A.

The Web Interface provides a utility to send SCPI commands to the 34980A via the SCPI Command Interface window. The procedure below shows how to access this window and send commands.

1 Press the Commands button at the top of the Web Browser Control page to

launch the SCPI Command Interface window.

2 The SCPI Command Interface window allows you to:

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Getting Started 2

a Set the time to wait for a command response from the instrument.

b Select commonly used commands to send to the instrument.

c Enter SCPI commands to send to the instrument. You may:

–Use Write to send the command to the instrument.

–Use Read to read the response back from the instrument.

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2 Getting Started

3 In the Command History field, you can view the last 20 commands sent to the

4 You can use the SCPI Quick Reference button to access a syntax summary of

–Use Write & Read to send a query to the instrument and read back the

response.

instrument.

all SCPI commands for the 34980A. For basic SCPI command syntax and examples, see “SCPI Language Conventions” on page 103.

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Getting Started 2

34980A Documentation Map

If you want to... ...Go here Additional Comments

Install Keysight IO Libraries Suite Automation-Ready CD The Automation-Ready CD is shipped with the

34980A. You can also find installation instructions and additional information at:

www.keysight.com/find/iolib.

Install 34980A instrument drivers 34980A Product Reference CD The 34980A Product Reference CD is shipped

with the 34980A. You can also download the drivers from the Keysight Web site at:

www.keysight.com/find/drivers.

Read the Keysight Connectivity Guide Automation-Ready CD The Automation-Ready CD is shipped with the

34980A. You can also download the guide from the Keysight Web site at: www.keysight.com/

find/connectivity.

Learn more about the 34980A Web Browser Interface

Web Interface On-Line Help system Click on the ?Help with this Page tab on the

Web Interface window.

Learn about the 34980A front-panel menu content and operation

Learn more about the 34980A mainframe and the available plug-in modules

Learn about the SCPI programming commands used with the 34980A

“Front Panel at a Glance” on page 38

“Operating the 34980A from the Front Panel Keyboard” on page 58

Chapter 3, “Features and Functions”

Chapter 4, “Introduction to the Plug-In Modules for the 34980A”

34980A Programmer’s Reference On-Line Help

Quick Reference Guide

These chapters are part of this Mainframe User’s Guide, shipped as a printed manual with the 34980A and a PDF file on the 34980A Product Reference CD. You can also download the manual from the Keysight Web site at:

www.keysight.com/find/34980A.

You can find the Programmer's Reference Help file and the Quick Reference Guide on the 34980A Product Reference CD. You can also download these guides from the Keysight Web site at: www.keysight.com/find/34980A.

Keysight 34980A Mainframe User’s Guide 95

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2 Getting Started

If you want to... ...Go here Additional Comments

Calibrate or troubleshoot the 34980A 34980A Service Guide Shipped as a printed manual with the 34980A

and a PDF file on the 34980A Product Reference CD. You can also download the manual from the Keysight Web site at:

www.keysight.com/find/34980A.

Update 34980A instrument firmware www.keysight.com/find/34980A

96 Keysight 34980A Mainframe User’s Guide

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Keysight 34980A Multifunction Switch/Measure Unit Mainframe User’s Guide

3 Features and Functions

Front Panel Features 99 Basic Operating Modes 102 SCPI Commands 103 Remote Interface Configuration 105 Clearing 34980A Memory 115 Analog Bus and Internal DMM Considerations 117 General Measurement Configuration 119 Temperature Measurement Configuration 135 Voltage Measurement Configuration 140 Resistance Measurement Configuration 142 Current Measurement Configuration 143 Frequency Measurement Configuration 145 Mx+B Scaling 146 Scanning 148 Monitor Mode 169 Scanning With External Instruments 171 Alarm Limits 174 Sequences 184 System-Related Operations 191 Calibration Overview 200 Factory Reset State 203 Instrument Preset State 206

This chapter provides detailed information about the features of the Keysight 34980A, whether you will be operating the instrument from the front panel or over the remote interface.

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3 Features and Functions

For general information about the plug-in modules, see Chapter 4, “Introduction

to the Plug-In Modules for the 34980A” . For information specific to a particular

plug-in module, see the separate User’s Guide provided for that module.

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Front Panel Features

Front Panel Display

The 34980A features a dual-line, alphanumeric display, plus a set of text and symbolic annunciators to indicate operational modes and error conditions.

Displayed Messages

The two-line display is context-sensitive; the nature of information displayed will depend on if you are navigating the configuration menus, switching between module and channels or viewing measurements

Module and Channel Status

When not in a menu, use the arrow keys to scroll through the (up to eight) modules installed in the 34980A, and the knob to scroll through available channels.

With each press of an arrow key, the upper display line indicates at left the channel in use, in the form sccc, where s is the slot number for that module and ccc is the channel number. When you stop on any module, the upper display line will display at right the module type briefly, then change to display channel information. Scrolling through the modules will only show information for installed modules, skipping over unused slots. For detailed examples of the slot and channel numbering scheme used in the 34980A, see “Slot and

Channel Addressing Scheme” on page 213.

Features and Functions 3

Menu Choices

During menu-driven operations (e.g. measurement configuration), the primary display line indicates the configuration feature or menu, and the second display line indicates the submenu, configuration choices or parameters. The second display line also displays temporary messages, when exiting menus or to convey configuration state changes.

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3 Features and Functions

Readings

During measurement operations, the primary display line shows the measurement reading and selected measurement function, and the second display line can be enabled to display secondary measurements.

Annunciators

The annunciators provide indications of communication mode, analog bus connectivity, trigger status, alarm conditions and more. For a complete description, see “Annunciator Display Indicators” on page 44.

Self-Guiding Menus

The 34980A utilizes context-sensitive, self-guiding menus for you to configure measurement functions. In general, the front panel knob and arrow keys are the primary tools in menu navigation. A list of menu navigation hints is provided below:

– To select slots and channels so they appear in the green channel field, use the

knob. As you use the front panel, you may be prompted to enter specific parameters. The menu key in use (e.g. Utility) will be backlit to indicate that you must select a parameter or that additional parameters are required in that menu.

– To enter alphanumeric characters, use the knob. To enter numbers, use the

number keypad or the knob. To move the display cursor position, use the left and right arrow keys.

– To select another choice (other than the one displayed) at a given menu level,

turn the knob.

– To select a displayed parameter and move to the next parameter, press either

the lighted menu key (e.g. Utility) or ENTER.

– To save changes, keep other parameters at their same value, and immediately

exit the menu, press EXIT MENU.

– To exit a menu without saving any changes, press CANCEL (located next to the

number keypad).

– When you have entered all required parameters, the lighting on the menu key

will turn off.

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Keysight 34980A User Manual

Safety Symbols

Additional Safety Notices

General

Before Applying Power

Ground the Instrument

Do Not Operate in an Explosive Atmosphere

Do Not Remove the Instrument Cover

Do Not Modify the Instrument

In Case of Damage

Environmental Conditions

Waste Electrical and Electronic Equipment (WEEE) Directive 2002/ 96/EC

Product category:

Sales and Technical Support

Table of Contents

1 Introduction to the 34980A

Data Acquisition Overview

Measurement Software

Data Acquisition Circuitry

Plug-In Modules

System Cabling

Transducers and Sensors

Alarm Limits

Signal Routing and Switching

Switching Topologies

RF and Microwave Switching

Measurement Input

The Internal DMM

Scanning

Scanning With External Instruments

The Digital Modules

Control Output

The Digital Modules

The Actuator / General-Purpose Switches

2 Getting Started

Front Panel at a Glance

Rear Panel at a Glance

Rear Panel Connector Pinouts

External Trigger/Alarms Connector (Male D-Sub)

Analog Bus Connector (Female D-Sub)

Annunciator Display Indicators

Installing and Connecting Modules

Removing a Slot Cover

Installing a Module

Instrument Rack Mounting

Operating the 34980A from the Front Panel Keyboard

Front Panel Menu Reference

Menu Example 1: Setting the Time and Date

Menu Example 2: Opening and Closing Channel Relays

Using the Measure Keys

Menu Example 3: Configuring the DMM for a Measurement

Menu Example 4: Configuring a Channel for a Measurement

Connecting the 34980A to Your Computer

Connecting Over LAN

Connecting Over GPIB

Connecting Over USB

Communicating with the 34980A

Operating the 34980A using the Integrated Web Browser Interface

Launching the Web Interface

Displaying the Browser Web Control Page

Selecting the “Allow Full Control” Mode

Setting a Web Browser Password

Closing and Opening Channel Relays

Modifying the Channel Configuration

Sending SCPI Commands Via the Web Interface

34980A Documentation Map

3 Features and Functions

Front Panel Features

Front Panel Display