Agilent Technologies Switch/Measure Manual de usuario

Agilent Technologies

Agilent 34980A

Multifunction

Switch/Measure Unit

User’s Guide

Notices

No part of this manual may be reproduced

in any form or by any means (including

electronic storage and retrieval or transla-

tion into a foreign language) without prior

agreement and written consent from Agi-

lent Technologies, Inc. as governed by

United States and international copyright

laws.

Manual Part Number

34980-90001

Edition

First edition, November 2004

Printed in Malaysia

Agilent Technologies, Inc.

815 14th Street SW

Loveland, CO80537USA

Warranty

The material contained in this docu-

ment is provided “as is,” and is sub-

ject to being changed, without notice,

in future editions. Further, to the max-

imum extent permitted by applicable

law, Agilent 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 par-

ticular purpose. Agilent shall not be

liable for errors or for incidental or

consequential damages in connection

with the furnishing, use, or perfor-

mance of this document or of any

information contained herein. Should

Agilent 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 sep-

arate agreement shall control.

Technology Licenses

The hardware 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.

Restricted Rights Legend

If software is for use in the performance of

a U.S. Government prime contract or sub-

contract, Software is delivered and

licensed as “Commercial computer soft-

ware” as defined in DFAR 252.227-7014

(June 1995), or as a “commercial item” as

defined in FAR 2.101(a) or as “Restricted

computer software” as defined in FAR

52.227-19 (June 1987) or any equivalent

agency regulation or contract clause. Use,

duplication or disclosure of Software is

subject to Agilent Technologies’ standard

commercial license terms, and non-DOD

Departments and Agencies of the U.S. Gov-

ernment will receive no greater than

Restricted Rights as defined in FAR

52.227-19(c)(1-2) (June 1987). U.S. Govern-

ment users will receive no greater than

Limited Rights as defined in FAR 52.227-14

(June 1987) or DFAR 252.227-7015 (b)(2)

(November 1995), as applicable in any

technical data.

Safety Notices

CAUTION

A CAUTION notice denotes a haz-

ard. It calls attention to an operat-

ing 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.

WARNING

A WARNING notice denotes a

hazard. It calls attention to an

operating procedure, practice, or

the like that, if not correctly per-

formed or adhered to, could result

in personal injury or death. Do not

proceed beyond a WARNING

notice until the indicated condi-

tions are fully understood and met.

Additional Safety Notices

The following general safety precautions

must be observed during all phases of oper-

ation 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. Agilent Technologies assumes

no liability of the customer’s failure to com-

ply with the requirements.

General

Do not use this products in any manner not

specified by the manufacturer. The protec-

tive features of this product may be

impaired if it is used in a manner not speci-

fied 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 con-

nected to an electrical ground (safety

ground) at the power outlet. Any interrup-

tion of the protective (grounding) conduc-

tor or disconnection of the protective earth

terminal will cause a potential shock haz-

ard that could result in personal injury.

Do Not Operate in an Explosive

Atmosphere

Do not operate the instrument in the pres-

ence of flammable gases or fumes.

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 exter-

nal circuits before removing the instrument

cover.

Do Not Modify the Instrument

Do not install substitute parts or perform

any unauthorized modification to the prod-

uct. Return the product to an Agilent Sales

and Service Office for service and repair to

ensure that safety features are maintained.

In Case of Damage

Instruments that appear damaged or defec-

tive should be made inoperative and

secured against unintended operation until

they can be repaired by qualified service

personnel.

Safety Symbols

Alternating current

Frame or chassis

terminal

Standby supply. Unit is

not completely

disconnected from ac

mains when switch is off

Caution, risk of electric

shock

Caution, refer to

accompanying description

If you have questions about your shipment, or if you need information

about warranty, service, or technical support, contact Agilent

Tec hnol og ies:

In the United States: (800) 829-4444

In Europe: 31 20 547 2111

In Japan: 0120-421-345

Or go to www.agilent.com/find/assist for information on contacting

Agilent in your country of specific location. You can also contact your

Agilent Technologies Representative.

DECLARATION OF CONFORMITY

According to ISO/IEC Guide 22 and CEN/CENELEC EN 45014

Template: A5971-5302-2, Rev. B.00 34980A-DoC-A DoC Revision A

iii

Manufacturer’s Name: Agilent Technologies, Incorporated

Manufacturer’s Address:

815 – 14th St. SW

Loveland, CO 80537

USA

Declares under sole responsibility that the product as originally delivered

Product Name: Multifunction Switch / Measure Unit

Model Number: 34980A, 34921A/T, 34922A/T, 34923A/T, 34925A/T,

34931A/T, 34932A/T, 34933A/T, 34937A/T, 34938A/T,

34941A, 34946A, 34947A, 34951A/T, 34952A/T

Product Options: This declaration covers all options of the above products

complies with the essential requirements of the following applicable European Directives, and

carries the CE marking accordingly:

Low Voltage Directive (73/23/EEC, amended by 93/68/EEC)

EMC Directive (89/336/EEC, amended by 93/68/EEC)

and conforms with the following product standards:

EMC Standard

IEC 61326-1:1997+A1:1998 / EN 61326-1:1997+A1:1998

CISPR 11:1990 / EN 55011:1991

IEC 61000-4-2:1995+A1:1998 / EN 61000-4-2:1995

IEC 61000-4-3:1995 / EN 61000-4-3:1995

IEC 61000-4-4:1995 / EN 61000-4-4:1995

IEC 61000-4-5:1995 / EN 61000-4-5:1995

IEC 61000-4-6:1996 / EN 61000-4-6:1996

IEC 61000-4-11:1994 / EN 61000-4-11:1994

Canada: ICES-001:1998

Australia/New Zealand: AS/NZS 2064.1

Limit

Group 1 Class A

4 kV CD, 4 kV AD

3 V/m, 80-1000 MHz

0.5 kV signal lines, 1 kV power lines

0.5 kV line-line, 1 kV line-ground

3 V, 0.15-80 MHz, 80% mod

Interrupt: 10 ms, 20 ms

The product was tested in a typical configuration with Agilent Technologies test systems.

Safety IEC 61010-1:2001 / EN 61010-1:2001

Canada: CSA C22.2 No. 61010.1:2004

USA: UL 61010-1: 2004

Supplementary Information:

This DoC applies to above-listed products placed on the EU market after:

9 November 2004

Date Ray Corson

Product Regulations Program Manager

For further information, please contact your local Agilent Technologies sales office, agent or distributor,

or Agilent Technologies Deutschland GmbH, Herrenberger Straße 130, D 71034 Böblingen, Germany.

34980A User’s Guide v

Contents

1 Introduction to the 34980A

Front Panel at a Glance 2

Rear Panel at a Glance 3

Rear Panel Connector Pinouts 4

External Trigger Input Connector (Male D-Sub) 4

Analog Bus Connector (Female D-Sub) 4

Annunciator Display Indicators 5

Front Panel Menu Reference 6

Instrument Rack Mounting 7

2 Features and Functions

SCPI Language Conventions 10

Rules for Using a Channel List 10

General Measurement Configuration 12

Overview of Measurement Modes 12

Analog Buses 15

Measurement Functions 16

Measurement Range 17

Measurement Resolution 18

Custom A/D Integration Time 19

Autozero 21

Trigger Delay 22

Automatic Trigger Delays 23

Safety Interlock 24

User-Defined Channel Labels 25

2-Wire Versus 1-Wire Mode 27

Analog Bus and Internal DMM Considerations 28

Environmental Operating Conditions 28

Electrical Operating Conditions 29

vi 34980A User’s Guide

Temperature Measurement Configuration 30

Measurement Units 30

Thermocouple Measurements 31

RTD Measurements 33

Thermistor Measurements 34

Voltage Measurement Configuration 35

DC Input Resistance 35

AC Low Frequency Filter 36

Resistance Measurement Configuration 37

Offset Compensation 37

Current Measurement Configuration 38

AC Low Frequency Filter 38

Frequency Measurement Configuration 39

Low Frequency Timeout 39

Mx+B Scaling 40

Scanning 42

Rules for Scanning 42

Adding Channels to the Scan List 44

Scan Trigger Source 46

Trigger Count 49

Sweep Count 50

Sample Count 51

Channel Delay 53

Automatic Channel Delays 54

Reading Format 56

Non-Sequential Scanning 57

Viewing Readings Stored in Memory 58

Monitor Mode 60

34980A User’s Guide vii

System-Related Operations 62

Firmware Revision 62

Product Firmware Updates 63

Instrument State Storage 63

Error Conditions 64

Self-Test 66

Front-Panel Display Control 66

Front-Panel Number Format 67

Real-Time System Clock 68

Relay Cycle Count 68

SCPI Language Version 69

Calibration Overview 70

Calibration Security 70

Calibration Count 72

Calibration Message 73

Remote Interface Configuration 74

GPIB Interface 75

USB Interface 75

LAN Interface 75

Factory Reset State 84

Instrument Preset State 86

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

Slot and Channel Addressing Scheme 90

Interconnection Solutions Overview 91

Module Considerations 92

General Considerations 92

Environmental Operating Conditions 92

Electrical Operating Conditions 93

viii 34980A User’s Guide

4 Low Frequency Multiplexer Switch Modules

Low Frequency Multiplexer Switch Modules 96

Measurement Functions for the MUX Modules 97

SCPI Programming Examples for the MUX Modules 98

34921A 40-Channel Armature Multiplexer with Low Thermal Offset 102

34921A Simplified Schematic 104

34921A D-Sub Connectors 105

34921T Terminal Block 106

34922A 70-Channel Armature Multiplexer 107

34922A Simplified Schematic 108

34922A D-Sub Connectors 109

34922T Terminal Block 111

34923A 40/80-Channel Reed Multiplexer 112

34923A Simplified Schematic for Two- or Four-Wire Mode 114

34923A D-Sub Connectors for Two- or Four-Wire Mode 116

34923T-001 Terminal Block for Two- or Four-Wire Mode 117

34923A Simplified Schematic for One-Wire Mode 118

34923A D-Sub Connectors for One-Wire Mode 119

34923T-002 Terminal Block for One-Wire Mode 120

34924A 70-Channel Reed Multiplexer 121

34924A Simplified Schematic 123

34924A D-Connectors 124

34924T Terminal Block 126

34925A 40/80-Channel Optically-Isolated FET Multiplexer 127

34925A Simplified Schematic for Two- or Four-Wire Mode 130

34925A D-Sub Connectors for Two- or Four-Wire Mode 131

34925T-001 Terminal Block for Two- or Four-Wire Mode 132

34925A Simplified Schematic for One-Wire Mode 133

34925A D-Sub Connectors for One-Wired Mode 134

34925T-002 Terminal Block for One-Wire Mode 135

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