Vti instruments VM2710A User Manual

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VM2710A

6.5 DIGIT MULTIMETER

SER’S MANUAL

P/N: 82-0032-000

Revised February 7, 2013

VTI Instrume nts Corp.

2031 Main Street

Irvine, CA 92614-6509

(949) 955-1894

Page 2

VTI Instruments Corporation

TABLE OF CONTENTS

INTRODUCTION

Certification ......................................................................................................................................................... 5

Warranty............................................................................................................................................................... 5

Limitation of Warranty ......................................................................................................................................... 5

Restricted Rights Legend ..................................................................................................................................... 5

DECLARATION OF CONFORMITY ................................................................................................................................ 6

Terms and Symbols .............................................................................................................................................. 7

Warnings .............................................................................................................................................................. 7

SECTION 1 ................................................................................................................................................................... 10

INTRODUCTION ........................................................................................................................................................ 10

Introduction ........................................................................................................................................................ 10

Description ......................................................................................................................................................... 11

VM2710A Specifications ................................................................................................................................... 12

SECTION 2 ................................................................................................................................................................... 21

PREPARATION FOR USE ............................................................................................................................................ 21

Installation .......................................................................................................................................................... 21

Calculating System Power and Cooling Requirements ...................................................................................... 21

Setting the Chassis Backplane Jumpers .............................................................................................................. 21

Setting the Logical Address ............................................................................................................................... 22

Front Panel Interface Wiring .............................................................................................................................. 23

SECTION 3 ................................................................................................................................................................... 24

PROGRAMMING ........................................................................................................................................................ 24

Introduction ........................................................................................................................................................ 24

Notation .............................................................................................................................................................. 26

Register Access .................................................................................................................................................. 26

Register Access Programming Example............................................................................................................. 30

CALIBRATION ........................................................................................................................................................... 34

Calibration Commands ....................................................................................................................................... 34

MFGTEST Comman ds ...................................................................................................................................... 37

SECTION 4 ................................................................................................................................................................... 40

COMMAND DICTIONARY .......................................................................................................................................... 40

Introduction ........................................................................................................................................................ 40

Alphabetical Command Listing .......................................................................................................................... 40

Command Dictionary ......................................................................................................................................... 46

IEEE 488.2 COMMON COMMANDS .......................................................................................................................... 47

*CLS .................................................................................................................................................................. 47

*ESE .................................................................................................................................................................. 48

*ESR? ................................................................................................................................................................ 49

*IDN? ................................................................................................................................................................. 50

*OPC .................................................................................................................................................................. 51

*RST .................................................................................................................................................................. 52

*SRE .................................................................................................................................................................. 53

*STB? ................................................................................................................................................................ 54

*TRG .................................................................................................................................................................. 55

*TST? ................................................................................................................................................................. 56

*WAI .................................................................................................................................................................. 57

INSTRUMENT SPECIFIC SCPI COMMANDS ................................................................................................................ 58

ABORt ............................................................................................................................................................... 58

CALCulate:AVERage:MAXimum? ................................................................................................................... 59

CALCulate:AVERage:MINimum? .................................................................................................................... 60

CALCulate:FUNCtion ........................................................................................................................................ 61

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CALCulate:[FUNCtion:]AVERage:AVERage?................................................................................................. 62

CALCulate:[FUNCtion:]AVERage:COUNt? .................................................................................................... 63

CALCulate:[FUNCtion:]LIMit:LOWer ............................................................................................................. 64

CALCulate:[FUNCtion:]LIMit:LOWer:TTLTrg ............................................................................................... 65

CALCulate:[FUNCtion:]LIMit:UPPer ............................................................................................................... 66

CALCulate:[FUNCtion:]LIMit:UPPer:TTLTrg ................................................................................................. 67

CALCulate:[FUNCtion:]NULL:OFFSet ............................................................................................................ 68

CALCulate:NORead .......................................................................................................................................... 69

CALCulate:STATe............................................................................................................................................. 70

CALibration:CONVert:GAIN? .......................................................................................................................... 71

CALibration:CONVert:GAIN:CURRent:AC? ................................................................................................... 72

CALibration:CONVert:GAIN:CURRent[:DC]? ................................................................................................ 73

CALibration:CONVert:GAIN:FRESistance? ..................................................................................................... 74

CALibration:CONVert:GAIN:RESistance? ....................................................................................................... 75

CALibration:CONVert:GAIN:VOLTage:AC? .................................................................................................. 76

CALibration:CONVert:GAIN:VOLTage[:DC]? ................................................................................................ 77

CALibration:CONVert:OFFSet? ........................................................................................................................ 78

CALibration:CONVert:OFFSet:CURRent:AC? ................................................................................................ 79

CALibration:CONVert:OFFSet:CURRent[:DC]? .............................................................................................. 80

CALibration:CONVert:OFFSet:FRESistance? .................................................................................................. 81

CALibration:CONVert:OFFSet:RESistance? .................................................................................................... 82

CALibration:CONVert:OFFSet:VOLTage:AC? ................................................................................................ 83

CALibration:CONVert:OFFSet:VOLTage[:DC]? ............................................................................................. 84

CALibration:DEFault ......................................................................................................................................... 85

CALibration:LFRequency .................................................................................................................................. 86

CALibration:NUMBer? ..................................................................................................................................... 87

CALibration:RESet ............................................................................................................................................ 88

CALibration:SECure:CODE .............................................................................................................................. 89

CALibration:SECure[:STATe] .......................................................................................................................... 90

CALibration:STORe .......................................................................................................................................... 91

CALibration:ZERO ............................................................................................................................................ 92

CALibration:ZERO:UPDate .............................................................................................................................. 93

CONFigure? ....................................................................................................................................................... 94

CONFigure:CURRent:AC .................................................................................................................................. 95

CONFigure:CURRent[:DC] ............................................................................................................................... 96

CONFigure:FRESistance ................................................................................................................................... 97

CONFigure:RESistance...................................................................................................................................... 98

CONFigure:VOLTage:AC ................................................................................................................................. 99

CONFigure:VOLTage[:DC] ............................................................................................................................ 100

FETCh? ............................................................................................................................................................ 101

FORMat ........................................................................................................................................................... 102

FORMat:OVERflow ........................................................................................................................................ 103

INITiate[:IMMediate] ...................................................................................................................................... 104

INPut:SOURce ................................................................................................................................................. 105

MATH .............................................................................................................................................................. 106

MATH:FACTor ............................................................................................................................................... 107

MATH:OFFSet ................................................................................................................................................ 108

MEASure:CURRent:AC? ................................................................................................................................ 109

MEASure:CURRent[:DC]? .............................................................................................................................. 110

MEASure:FRESistance? .................................................................................................................................. 111

MEASure:RESistance? .................................................................................................................................... 112

MEASure:VOLTage:AC? ................................................................................................................................ 113

MEASure:VOLTage[:DC]? ............................................................................................................................. 114

MFGTEST 99 .................................................................................................................................................. 115

OUTPut:TTLTrg .............................................................................................................................................. 116

OUTPut[:TTLTrg]:POLarity ........................................................................................................................... 117

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RANGe:AUTOmatic ........................................................................................................................................ 118

RANGe:DELay ................................................................................................................................................ 119

RANGe:DELay:AUTOmatic ........................................................................................................................... 120

READ? ............................................................................................................................................................. 121

SAMPle:COUNt .............................................................................................................................................. 122

SAMPle:SOURce ............................................................................................................................................. 123

SAMPle:TIMer ................................................................................................................................................ 124

[SENSe:]BANDwidth:DETector ..................................................................................................................... 125

[SENSe:]CURRent:AC:RANGe ...................................................................................................................... 126

[SENSe:]CURRent:APERture ......................................................................................................................... 127

[SENSe:]CURRent[:DC]:RANGe ................................................................................................................... 128

[SENSe:]CURRent:NPLC................................................................................................................................ 129

[SENSe:]CURRent:RANGe:AUTOmatic ........................................................................................................ 130

[SENSe:]CURRent:RANGe:DELay:AUTOmatic ........................................................................................... 131

[SENSe:]CURRent:RESolution:AC ................................................................................................................. 132

[SENSe:]CURRent:RESolution[:DC] .............................................................................................................. 133

[SENSe:]FUNCtion .......................................................................................................................................... 134

[SENSe:]RESistance:APERture ....................................................................................................................... 135

[SENSe:]RESistance:NEGative ....................................................................................................................... 136

[SENSe:]RESistance:NPLC ............................................................................................................................. 137

[SENSe:]RESistance:RANGe .......................................................................................................................... 138

[SENSe:]RESistance:RANGe:AUTOmatic ..................................................................................................... 139

[SENSe:]RESistance:RANGe:DELay:AUTOmatic ......................................................................................... 140

[SENSe:]RESistance:RESolution..................................................................................................................... 141

[SENSe:]VOLTage:AC:RANGe ...................................................................................................................... 142

[SENSe:]VOLTage:APERture ......................................................................................................................... 143

[SENSe:]VOLTage[:DC]:RANGe ................................................................................................................... 144

[SENSe:]VOLTage:NPLC ............................................................................................................................... 145

[SENSe:]VOLTage:RANGe:AUTOmatic ....................................................................................................... 146

[SENSe:]VOLTage:RANGe:DELay:AUTOmatic ........................................................................................... 147

[SENSe:]VOLTage:RESolution:AC ................................................................................................................ 148

[SENSe:]VOLTage:RESolution[:DC] ............................................................................................................. 149

TEST? .............................................................................................................................................................. 150

TRACe:FEED .................................................................................................................................................. 151

TRIGger:BUFFered ......................................................................................................................................... 152

TRIGger:COUNt .............................................................................................................................................. 153

TRIGger:DELay ............................................................................................................................................... 154

TRIGger:DELay:AUTOmatic .......................................................................................................................... 155

TRIGger[:IMMediate] ..................................................................................................................................... 156

TRIGger:SLOPe ............................................................................................................................................... 157

TRIGger:SOURce ............................................................................................................................................ 158

REQUIRED SCPI COMMANDS................................................................................................................................. 159

STATus:OPERation:CONDition?.................................................................................................................... 159

STATus:OPERation:ENABle .......................................................................................................................... 160

STATus:OPERation[:EVENt]? ........................................................................................................................ 161

STATus:PRESet ............................................................................................................................................... 162

STATus:QUEStionable:CONDition? .............................................................................................................. 163

STATus:QUEStionable:ENABle ..................................................................................................................... 164

STATus:QUEStionable[:EVENt]? ................................................................................................................... 165

SYSTem:ERRor? ............................................................................................................................................. 166

SYST:ERR? Error Codes ................................................................................................................................. 167

SYSTem:VERSion? ......................................................................................................................................... 169

INDEX ........................................................................................................................................................................ 170

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CERTIFICATION

VTI Instruments Corp. (VTI) certifies that this product met its published specifications at the time of shipment from the factory. VTI further certifies that its calibration measurements are traceable to the United States National Institute of Standards and Technology (formerly National Bureau of Standards), to the extent allowed by that organization’s calibration facility, and to the calibration facilities of other Internatio nal Standa rds Organization members.

WARRANTY

The product referred to herein is warranted against defects in material and workmanship for a period of three years from the receipt date of the product at customer’s facility. The sole and exclusive remedy for breach of any warranty concerning these goods shall be repair or replacement of defective parts, or a refund of the purchase price, to be determined at the option of VTI.

For warranty service or repair, this product must be returned to a VTI Instruments authorized service center. The product shall be shipped prepaid to VTI and VTI shall prepay all returns of the product to the buyer. However, the buyer shall pay all s hi pping charges, duties, and taxes for products re t urned to VTI from another country.

VTI warrants that its software and firmware designated by VTI for use with a product will execute its programming when properly insta lled on that product. VTI does not however warrant that the operation of the product, or software, or firmware will be uninterrupted or error free.

LIMITATION OF WARRANTY

The warranty shall not apply to defects resulting from improper or inadequate maintenance by the buyer, buyersupplied products or interfacing, unauthorized modification or misuse, opera tion outside the environmental specifications for the product, or improper site preparation or maintenance.

VTI Instruments shall not be liable for injury to property other than the goods themselves. Other than the limited warranty stated above, VTI Instruments makes no other warranties, express or implied, with respect to the quality of product beyond the description of the goods on the face of the contract. VTI specifically disclaims the implied warranties of merchantability and fitness for a particular purpose.

RESTRICTED RIGHTS LEGEND

Use, duplication, or disclosure by the Government is subject to restrictions as set forth in subdivision (b)(3)(ii) of the Rights in Technical Data and Computer Software clause in DFARS 252.227-7013.

VTI Instruments 2031 Main Street Irvine, CA 92614-6509 U.S.A.

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VTI Instruments Corporation

Declaration of Conformity According to ISO/IEC Guide 22 and EN 45014

I hereby declare that the aforementioned product has been designed to be in compliance with the relevant sections of

ECLARATION OF CONFORMITY

MANUFACTURER’S NAME VTI Instruments

ANUFACTURER’S ADDRESS 2031 Main Street

Irvine, California 92614-6509

RODUCT NAME 6.5 Digit Multimeter

ODEL NUMBER(S) VM2710A

RODUCT OPTIONS All

RODUCT CONFIGURATIONS All

VTI Instruments declares that the aforementioned product conforms to the requirements of the Low Voltage Directive 73/23/EEC and the EMC Directive 89/366/EEC (inclusive 93/68/EEC) and

carries the “CE” mark accordingly. The product has been designed and manufactured according to the following specifications:

AFETY EN61010 (2001)

EMC EN61326 (1997 w/A1:98) Class A

CISPR 22 (1997) Class A VCCI (April 200 0) Class A ICES-003 Class A (ANSI C63.4 1992) AS/NZS 3548 (w/A1 & A2:97) Class A FCC Part 15 Subpart B Class A EN 61010-1:2001

The product was installed into a C-size VXI mainframe chassis and tested in a typical configuration.

the specifications listed above as well as complying with all essential requirements of the Low Voltage Directive.

August 2004

_________________________

Steve Mauga, QA Manager

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These terms may appear in this manual:

WARNING

Indicates that a procedure or condition may cause bodily injury or death.

CAUTION

Indicates that a procedure or condition could possibly cause damage to equipment or loss of data.

These symbols may appear on the product:

Follow these precautions to avoid injury or damage to the product:

Use Proper Power Cord

To avoid hazard, only use the power cord specified for this product.

Use Proper Power Source

To avoid electrical overload, electric shock, or fire hazard, do not use a power source that applies other than the specified voltage.

Use Proper Fuse

To avoid fire hazard, only use the type and rating fuse specified for this product.

Review the following safety precautions to avoid bodily injury and/or damage to the product. These precautions must be observed during all phases of operation or service of this product. Failure to comply with these precautions, or with specific warnings elsewhere in this manual, violates safety standards of design, manufacture, and intended use of the product.

Service should only be performed by qualified personnel.

TERMS AND SYMBOLS

GENERAL SAFETY INSTRUCTIONS

WARNINGS

ATTENTION - Important safety instructions

Frame or chassis ground

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VTI Instruments Corporation

Avoid Electric Shock

To avoid electric shock or fire hazard, do not operate this product with the covers removed. Do not connect or

performed by qualified personnel.

Ground the Product

This produc t is grounde d thr ough the ground ing co nduc tor of

conductor must be connected to earth ground.

Operating Conditions

To avoid injury, electric shock or fire hazard:

Do not operate in wet or damp conditions.

Do not operate in an explosive atmosphere.

Operate or store only in specified temperature range.

Provide proper clearance for product ventilation to prevent overheating.

DO NOT operate if any damage to this product is

Product should be inspected or serviced

only by qualified personnel.

Improper Use

The operator of this instrument is advised that if the

Conformity is checked by inspection.

WARNINGS (CONT.)

disconnect any cable, probes, test leads, etc. while they are connected to a voltage source. Remove all power and unplug unit before performing any service. Service should only be

the power cord. To avoid electric shock, the grounding

suspected.

equipment is used i n a manner not specified in this manual, the protection provided by the equipment may be impaired.

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Support resources for this product are available on the Internet and at VTI Instruments customer support centers.

VTI Instruments Corp. World Headquarters

VTI Instruments Corp. 2031 Main Street Irvine, CA 92614-6509

Phone: (949) 955-1894 Fax: (949) 955-3041

VTI Instruments Cleveland Instrument Division

5425 Warner Road Suite 13 Valley View, OH 44125

Phone: (216) 447-8950 Fax: (216) 447-8951

VTI Instruments Lake Stevens Instrument Division

3216 Wetmore Avenue, Suite 1 Everett, WA 98201

Phone: (949) 955-1894 Fax: (949) 955-3041

VTI Instruments, Pvt. Ltd. Bangalore Instrument Division

642, 80 Feet Road Koramangala IV Block Bangalore – 560 034 India

Phone: +91 80 4040 7900 Phone: +91 80 4162 0200 Fax: +91 80 4170 0200

Technical Support

Phone: (949) 955-1894 Fax: (949) 955-3041 E-mail: [email protected]

Visit http://www.vtiinstruments.com

SUPPORT RESOURCES

for worldwide support sites and service plan information.

VM2710A Preface 9

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V X

I B U S

I N T E R N A L

I P

B U S

VMIP

INTERFACE

VMIP

INSTRUMENT

MODULE #1

VMIP

INSTRUMENT

MODULE #2

VMIP

INSTRUMENT

MODULE #3



SECTION 1

INTRODUCTION

The VM2710A is a high-performance, autoranging 6.5digit multimeter. It offers dc and ac voltage, dc and ac cur rent, and 2- and 4 -wire resistance measurements in a very small footprint. The instrument uses t he messa ge-based word serial interface for programming and data movement, as well as supporting register data access for high-speed data access. The VM2710A command set conforms to the SCPI standard for consistency and ease of programming.

The VM2710A is a member of the VXI Technology VMIP (VXI Modular Instrumentation Platform) family. This gives the user the added flexibility of combining it with other instruments, such as arbitrary waveform generators or digitizers, to create a multi-function C-size card. Finally, users do not need to take up a complete VXIbus card slot for the DMM functionality required, making the VM2710A the ideal choice for data acquisition and ATE. The VM2710A may be combined with any of the other members of the VMIP family to form a customized and highly integrated instrument (see Figure 1-1). This allows the user to reduce system size and cost by combining the VM2710A with two other instrument functions in a single-wide C-size VXIbus module.

FIGURE 1-1: VMIP

10 VM2710A Introduction

PLATFORM

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bus

FAIL

ACC/

ERR

FAIL

ACC/

ERR

FAIL

ACC/

ERR

J200

J201

J202

Regardless of whether the VM2710A is configured with other VM2710A modules or with other VMIP modules, each DMM is treated as an independent instrument in the VXIbus chassis. Each has its own Unique Logical Address and, as such, its own front panel FAIL and ACCESS indicators.

DESCRIPTION

The VM2710A is designed for fast system throughput with greater than 2000 readings/s across the backplane. For applications that require multiple input monitoring, the VM27 10 A pr ovide s for on-board limit checking and the optio n of generating VXIbus triggers if the input e xceeds these limits. This approach further speeds system throughput by freeing up the VXIbus controller and backplane from having to continuously monitor these limits.

As part of the VMIP family of instruments, the VM2710A can be combined with up to two other modules to form a high-density VXIbus instrument that fully utilizes the capabilities of the VMIP module.

Two differential isolated input channels are provided on the VM2710A to allow one channel to be connected to a scanning multiplexer while the other can be brought directly out for manual testing or precision measurements.

Measurement aperture times may be programmed allowing the choice of resolution, accuracy, and noise rejection (i.e., rejection of 50 Hz or 60 Hz noise). Fast function/range changes allow for optimum measurement throughput. Short aperture times give high-speed readings while longer aperture times give greater accuracy.

The DMM has extensive triggering capabilities including programmable delays to allow synchronization with external devices. It can be triggered from the fr ont panel trigge r input, the VXIbus trigge r lines or via word-serial p r otocol.

The VM2710A is programmed using message-based, word serial protocol. The commands are SCPI and IEEE STD 488.2 compatible. VXIplug&play drivers are also provided to further ease programming.

The calibration constants are stored in non-volatile memory and are password protected for security. These constants are determined when the instrument is calibrated and can be changed as necessary (such as during routine calibration cycles). These constants may also be examined at any time via a word serial query and altered via a word serial command. All calibration is done via software , i ncl udi ng the ac range. This allows for automated calibration and eliminates the need for removing covers from the unit.

FIGURE 1-2: FRONT PANEL LAYOUT

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GENERAL SPECIFICATIONS

WARM UP TIME

60 min

DMM INPUTS

Connector

15-Pin “D” Connector

INPUT HI, INPUT LO, +I, -I, GUARD, TRIGGER INPUT and/or GROUND

MEASUREMENT FUNCTIONS

Volts (dc, rms ac)

Current (dc, rms ac)

OTHER FRONT PANEL FEATURES

2 A fuse for current function

DATA ACCESS TYPES

MEMORY

64,000 readings / 256,000 readings optional

CALIBRATION METHOD

Programmable with covers on; calibration constants stored in non-volatile memory

OVERLOAD INDICATION

Programmable

AUTORANGING

Up-Ranges

@ > 120% of range in dc volts, ac volts and current functions

@ < 9% of range in ohms function

FILTERS

AC filter only

MAXIMUM COMMON MODE VOLTAGE

350 V dc or rms ac (500 V p)

OPERATING ENVIRONMENT

0 °C to 55 °C

VM2710A SPECIFICATIONS

Input Sets

Down-Ranges

Two input sets consisting of:

2-wire ohms 4-wire ohms

@ > 100% of range in ohms function @ < 10% of range in dc volts, ac volts and current functions

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DC VOLTAGE SPECIFICATIONS

DC RANGES

0.1, 1.0, 10.0, 100.0, 300.0 V

OVER-RANGE

20% except 300 V range

INPUT IMPEDANCE

0.1 V – 10.0 V Range 100 V & 300 V Range

1.0 GΩ

10.0 MΩ

NORMAL MODE REJECTION @ POWER-LINE FREQUENCY ±0.1%, @ 100, 10 OR 1 PLC

> 70 dB

COMMON-MODE REJECTION, WITH UP TO 1 kΩ IN INPUT LOW LEAD

0.03 PLC

> 140 dB

> 70 dB

INPUT BIAS CURRENT

At 23 °C Over Temperature

50 PA maximum 100 PA maximum

INPUT PROTECTION

300 V on all ranges

RESOLUTION

100 PLC

(6.5 Digits)

10 PLC

(6.5 Digits)

1 PLC

(5.5 Digits)

0.1 PLC

(5.5 Digits)

0.03 PLC

(4.5 Digits)

0.1 V

100 nV

1 µV

10 µV

1.0 V

1 µV

10 µV

100 µV

10.0 V

10 µV

100 µV

1 mV

100.0 V

100 µV

1 mV

10 mV

300.0 V

100 µV

1 mV

10 mV

24 HR ACCURACY ± (%READING + %RANGE) T

CAL

±1 °C AFTER 1 HR WARM-UP

100 PLC

(6.5 Digits)

10 PLC

(6.5 Digits)

1 PLC

(5.5 Digits)

0.1 PLC

(5.5 Digits)

0.03 PLC

(4.5 Digits)

0.1 V

0.001 + 0.002

0.001 + 0.005

0.01 + 0.01

1.0 V

0.001 + 0.001

0.001 + 0.003

0.01 + 0.01

10.0 V

0.001 + 0.001

0.001 + 0.003

0.01 + 0.01

100.0 V

0.001 + 0.001

0.001 + 0.003

0.01 + 0.01

300.0 V

0.001 + 0.001

0.01 + 0.01

90 DAY ACCURACY ± (%READING + %RANGE) T

CAL

±5 °C AFTER 1 HR WARM-UP AND DC ZERO COMMAND

100 PLC

(6.5 Digits)

10 PLC

(6.5 Digits)

1 PLC

(5.5 Digits)

0.1 PLC

(5.5 Digits)

0.03 PLC

(4.5 Digits)

0.1 V

0.005 + 0.003

0.005 + 0.007

0.02 + 0.02

1.0 V

0.004 + 0.003

0.004 + 0.005

0.02 + 0.02

10.0 V

0.005 + 0.003

0.005 + 0.005

0.02 + 0.02

100.0 V

0.005 + 0.003

0.007 + 0.005

0.02 + 0.02

300.0 V

0.005 + 0.003

0.007 + 0.004

0.02 + 0.02

50 – 400 Hz @: 1, 10, 100 PLC

0.1 PLC

Range

> 120 dB > 80 dB

Range

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DC VOLTAGE SPECIFICATIONS (CONTINUED)

1 YEAR ACCURACY ± (%READING + %RANGE) T

CAL

± 5 °C AFTER 1 HOUR WARM-UP AND DC ZERO COMMAND

100 PLC

(6.5 Digits)

10 PLC

(6.5 Digits)

1 PLC

(5.5 Digits)

0.1 PLC

(5.5 Digits)

0.03 PLC

(4.5 Digits)

0.1 V

0.007 + 0.005

0.007 + 0.009

0.03 + 0.02

1.0 V

0.005 + 0.005

0.005 + 0.007

0.03 + 0.02

10.0 V

0.007 + 0.005

0.007 + 0.007

0.03 + 0.02

100.0 V

0.008 + 0.005

0.010 + 0.007

0.03 + 0.02

300.0 V

0.008 + 0.005

0.010 + 0.006

0.03 + 0.02

TEMPERATURE COEFFICIENT: 0 °C - 18 °C AND 28 °C - 55 °C; ±(%READING + %RANGE) / °C

0.1 V

300.0 V

0.0003 + 0.0005

0.0007 + 0.0001

Range

1.0 V

10.0

100.0

0.0002 + 0.0001

0.0003 + 0.0001

0.0007 + 0.0001

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DC CURRENT SPECIFICATIONS

CURRENT RANGES

10 mA, 100 mA, and 1.0 A

OVER-RANGE

20% on all r anges

SHUNT RESISTORS

1.0 A Range 10 mA, 100 mA Range

0.1 Ω

8.1 Ω

BURDEN VOLTAGE

10 mA

1.0 A

≤ 100 mV

≤ 120 mV

OVERCURRENT PROTECTION

2.0 A fuse

RESOLUTION

100 PLC

(6.5 Digis)

10 PLC

(6.5 Digits)

1 PLC

(5.5 Digits)

0.1 PLC

(5.5 Digits)

0.03 PLC

(4.5 Digits)

10 mA

10 nA

100 nA

1 µA

100 mA

100 nA

1 µA

10 µA

1.0 A

1 µA

10 µA

100 µA

24 HOUR ACCURACY ±(%READING + %RANGE) T

CAL

±1 °C AFTER 1 HR WARM-UP

100 PLC

(6.5 Digits)

10 PLC

(6.5 Digits)

1 PLC

(5.5 Digits)

0.1 PLC

(5.5 Digits)

0.03 PLC

(4.5 Digits)

10 mA

0.005 + 0.005

0.010 + 0.010

100 mA

0.005 + 0.001

0.005 + 0.005

0.010 + 0.010

1.0 A

0.005 + 0.005

0.010 + 0.010

90 DAY ACCURACY ±(%READING + %RANGE) T

CAL

±5 °C AFTER 1 HR WARM-UP AND DC ZERO COMMAND

100 PLC

(6.5 Digits)

10 PLC

(6.5 Digits)

1 PLC

(5.5 Digits)

0.1 PLC

(5.5 Digits)

0.03 PLC

(4.5 Digits)

10 mA

0.015 + 0.010

0.030 + 0.050

100 mA

0.015 + 0.004

0.030 + 0.030

1.0 A

0.015 + 0.010

0.030 + 0.050

1 YEAR ACCURACY ±(%READING + %RANGE) T

CAL

±5 °C AFTER 1 HR WARM-UP

100 PLC

(6.5 Digits)

10 PLC

(6.5 Digits)

1 PLC

(5.5 Digits)

0.1 PLC

(5.5 Digits)

0.03 PLC

(4.5 Digits)

10 mA

0.020 + 0.015

0.05 + 0.05

100 mA

0.020 + 0.008

0.020 + 0.01

0.05 + 0.05

1.0 A

0.020 + 0.015

0.05 + 0.05

TEMPERATURE COEFFICIENT: 0 °C - 18 °C AND 28 °C - 55 °C; (%READING + %RANGE) / °C

10 mA

1.0 A

0.002 + 0.0005

100 mA

Range

≤ 1.0 V

Range

100 mA

0.001 + 0.0005

VM2710A Introduction 15

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VTI Instruments Corporation

AC VOLTAGE SPECIFICATIONS

MEASUREMENT METHOD

AC-coupled true rms

AC RANGES

0.1, 1.0, 10.0, 100.0, 300.0 VAC

OVERRANGE

20% except 300 V range

INPUT IMPEDANCE

1 MΩ in parallel with < 50 pF

CREST FACTOR

5:1 maximum

ADDITIONAL CREST FACTOR ERROR

Crest Factor

4 - 5

Add 0.40% of reading

AC COMMON-MODE REJECTION WITH 100 Ω IN LOW LEAD

70 dB

MAXIMUM INPUT VOLTAGE

dc + ac = 300 V

rms

RESOLUTION

100 PLC

(6.5 Digits)

10 PLC

(6.5 Digits)

1 PLC

(5.5 Digits)

0.1 PLC

(5.5 Digits)

0.03 PLC

(4.5 Digits)

0.1 V

1 µV

10 µV

1.0 V

10 µV

100 µV

100 µ

10.0 V

100 µV

1 mV

100.0 V

1 mV

10 mV

300.0 V

1 mV

10 mV

100, 10,

PLC

±(%R

SINE-WAVE INPUT ≥ 5% FULL SCALE (F.S.), LOW-FREQUENCY FILTER ON

Range

0.1 V Range

1.0 V – 300.0 V Ranges : (VIN x Freq. ≤ 1.5x107)

20 Hz – 30 Hz

1.00 + 0.15

1.00 + 0.02

30 Hz – 50 Hz

0.50 + 0.15

0.50 + 0.02

50 Hz – 200 Hz

0.20 + 0.15

0.20 + 0.02

200 Hz – 10 kHz

0.05 + 0.15

0.02 + 0.02

10 kHz – 50 kHz

0.20 + 0.15

0.05 + 0.04

50 kHz – 100 kHz

0.60 + 0.20

0.30 + 0.10

100 kHz – 300 kHz

3.00 + 0.50

100, 10

PLC

±(%R

SINE-WAVE INPUT ≥ 5% F.S., LOW-FREQUENCY FILTER ON

Range

0.1 V Range

1.0 V – 300.0 V Ranges : (VIN x Freq. ≤ 1.5x107)

20 Hz – 30 Hz

1.10 + 0.15

1.10 + 0.03

30 Hz – 50 Hz

0.55 + 0.15

0.55 + 0.03

50 Hz – 200 Hz

0.23 + 0.15

0.23 + 0.03

200 Hz – 10 kHz

0.08 + 0.15

0.05 + 0.03

10 kHz – 50 kHz

0.23 + 0.15

0.10 + 0.05

50 kHz – 100 kHz

0.70 + 0.25

0.40 + 0.15

100 kHz – 300 kHz

4.00 + 0.60

1 - 2 2 - 3 3 - 4

Range

CCURACY @

Add 0.05% of reading Add 0.15% of reading Add 0.30% of reading

AND 1

FOR 24 HR @

±1 °C AFTER 1 HR WARM-UP;

CAL

EADING + %RANGE

CCURACY @

AND 1

FOR 90 DAYS @

±5 °C AFTER 1 HR WARM-UP;

CAL

16 VM2710A Introduction

EADING + %RANGE

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AC VOLTAGE SPECIFICATIONS (CONTINUED)

100, 10

PLC

±(%R

SINE-WAVE INPUT ≥ 5% F.S., LOW-FREQUENCY FILTER ON

Range

0.1 V Range

1.0 V – 300.0 V Ranges : (VIN x Freq. ≤ 1.5x107)

20 Hz – 30 Hz

1.12 + 0.15

1.12 + 0.04

30 Hz – 50 Hz

0.57 + 0.15

0.57 + 0.04

50 Hz – 200 Hz

0.25 + 0.15

0.25 + 0.04

200 Hz – 10 kHz

0.10 + 0.15

0.07 + 0.04

10 kHz – 50 kHz

0.25 + 0.15

0.12 + 0.06

50 kHz – 100 kHz

0.75 + 0.25

0.45 + 0.20

100 kHz – 300 kHz

4.00 + 0.60

TEMPERATURE COEFFICIENT; 0 °C - 18 °C AND 28 °C - 55 °C; ±(%READING + %RANGE) / °C

20 Hz – 30 Hz

50 kHz – 100 kHz

0.020 + 0.001

0.020 + 0.010

Note: Add 0.005% Reading/°C in 100.0 V and 300.0 V ranges

CCURACY @

30 Hz – 50 Hz 50 Hz – 200 Hz 200 Hz – 10 kHz 10 kHz – 50 kHz

AND 1

FOR 1 YR @

0.010 + 0.001

0.005 + 0.001

±5 °C AFTER 1-HR WARM-UP;

CAL

EADING + %RANGE

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VTI Instruments Corporation

AC CURRENT SPECIFICATIONS

MEASUREMENT METHOD

Direct coupled to fuse and shunt, ac-coupled true rms measurement

CURRENT RANGES

10 mA, 100 mA, and 1.0 A rms

OVER-RANGE

20%

SHUNT RESISTORS

1.0 A Range 10 mA & 100 mA Range

0.1 Ω

8.1 Ω

BURDEN VOLTAGE

10 mA

1.0 A

≤ 100 mV

≤ 120 mV

OVER-CURRENT PROTECTION

2.0 A fuse

RESOLUTION

100 PLC

(6.5 Digits)

10 PLC

(6.5 Digits)

1 PLC

(5.5 Digits)

0.1 PLC

(5.5 Digits)

0.03 PLC

(4.5 Digits)

10 mA

100 nA

1 µA

100 mA

1 µA

10 µA

1.0A

10 µA

100 µA

24 HR ACCURACY1

Range

10 mA Range

100 mA Range

1.0 A Range

20 Hz – 30 Hz

1.00 + 0.20

1.00 + 0.04

1.00 + 0.20

30 Hz – 50 Hz

0.50 + 0.20

0.50 + 0.04

0.50 + 0.20

50 Hz – 1k Hz

0.20 + 0.20

0.20 + 0.04

0.20 + 0.20

1k Hz – 5kHz

0.17 + 0.20

5kHz – 10kHz

0.55 + 0.30

3.0 + 0.30

90 DAY ACCURACY2

Range

10 mA Range

100 mA Range

1.0 A Range

20 Hz – 30 Hz

1.10 + 0.20

1.10 + 0.05

1.10 + 0.20

30 Hz – 50 Hz

0.60 + 0.20

0.60 + 0.05

0.60 + 0.20

50 Hz – 1kHz

0.30 + 0.20

0.30 + 0.05

0.30 + 0.20

1kHz – 5kHz

0.27 + 0.20

5kHz – 10kHz

0.65 + 0.30

3.1 + 0.30

1 YR ACCURACY2

Range

10 mA Range

100 mA Range

1.0 A Range

20 Hz – 30 Hz

1.12 + 0.20

1.12 + 0.06

1.12 + 0.20

30 Hz – 50 Hz

0.62 + 0.20

0.62 + 0.06

0.62 + 0.20

50 Hz – 1kHz

0.32 + 0.20

0.32 + 0.06

0.32 + 0.20

1kHz – 5kHz

0.29 + 0.20

5kHz – 10kHz

0.67 + 0.30

3.12 + 0.30

TEMPERATURE COEFFICIENT: 0 °C - 18 °C AND 28 °C - 55 °C; (%READING + %RANGE) / °C

20 Hz – 30 Hz

50 Hz – 10kHz

0.020 + 0.001

0.006 + 0.001

100 mA

Range

≤ 1.0 V

30 Hz – 50 Hz

0.010 + 0.001

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RESISTANCE SPECIFICATIONS

RESISTANCE RANGES

20 Ω, 200 Ω, 2 kΩ, 20 kΩ, 200 kΩ, 2 MΩ, 20 MΩ

OVER-RANGE

None

VOLTAGE ACROSS UNKNOWN

20 Ω & 200 Ω Ranges All Other Ranges

240 mV nominal at full scale

2.4 V nominal at full scale

LEAD WIRE RESISTANCE

20 Ω & 200 Ω Ranges All Other Ranges

10.0 Ω maximum

100.0 Ω maximum

VOLTAGE PROTECTION

300 V dc or peak ac

OPEN CIRCUIT VOLTAGE

20 Ω & 200 Ω Ranges 2 kΩ & 20 MΩ Ranges

+8 V max. in 20 Ω and 200 Ω range +9 V max. in 2 kΩ and 20 MΩ range

MEASUREMENTCURRENTS

Range

20 MΩ

Current

120 nA

RESOLUTION

100 PLC

(6.5 Digits)

10 PLC

(6.5 Digits)

1 PLC

(5.5 Digits)

0.1 PLC

(5.5 Digits)

0.03 PLC

(4.5 Digits)

20 Ω

100 µΩ

1 mΩ

200 Ω

100 µΩ

1 mΩ

10 mΩ

2 kΩ

1 mΩ

10 mΩ

100 mΩ

20 kΩ

10 mΩ

100 mΩ

1.0 Ω

200 kΩ

100 mΩ

1.0 Ω

10 Ω

2 MΩ

1.0 Ω

10 Ω

100 Ω

20 MΩ

100 Ω

1 kΩ

4-WIRE - 24 HOUR ACCURACY ± (%READING + %RANGE) T

CAL

±1 °C AFTER 1 HOUR WARM-UP

Range

100 PLC

10 PLC

1 PLC

0.1 PLC

0.03 PLC

20 Ω

0.001 + 0.007

0.01 + 0.02

200 Ω

0.001 + 0.007

0.01 + 0.02

2 kΩ

0.001 + 0.001

0.001 + 0.003

0.001 + 0.005

0.01 + 0.02

20 kΩ

0.001 + 0.002

0.001 + 0.003

0.001 + 0.005

0.01 + 0.02

200 kΩ

0.001 + 0.002

0.001 + 0.003

0.001 + 0.005

0.01 + 0.02

2 MΩ

0.001 + 0.002

0.001 + 0.003

0.040 + 0.005

0.03 + 0.02

20 MΩ

0.010 + 0.002

0.010 + 0.003

0.200 + 0.005

0.20 + 0.02

20 Ω 200 Ω 2 kΩ 20 kΩ 200 kΩ 2 MΩ

Range

12 mA

1.2 mA

1.2 mA 100 µA 12 µA

1.2 µA

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VTI Instruments Corporation

RESISTANCE SPECIFICATIONS (CONTINUED)

4-W

±(%R

CAL

Range

100 PLC

10 PLC

1 PLC

0.1 PLC

0.03 PLC

20 Ω

0.005 + 0.008

0.005 + 0.010

0.02 + 0.02

200 Ω

0.005 + 0.008

0.007 + 0.008

0.007 + 0.010

0.02 + 0.02

2 kΩ

0.005 + 0.002

0.007 + 0.003

0.007 + 0.005

0.007 + 0.007

0.02 + 0.02

20 kΩ

0.005 + 0.003

0.007 + 0.003

0.007 + 0.005

0.007 + 0.007

0.02 + 0.02

200 kΩ

0.005 + 0.003

0.007 + 0.003

0.007 + 0.005

0.007 + 0.007

0.02 + 0.02

2 MΩ

0.010 + 0.003

0.010 + 0.005

0.050 + 0.007

0.04 + 0.03

20 MΩ

0.020 + 0.003

0.020 + 0.005

0.200 + 0.007

0.20 + 0.05

4-WIRE: 1 YR ACCURACY ±(%READING + %RANGE) T

CAL

±5 °C AFTER 1 HR WARM-UP

Range

100 PLC

10 PLC

1 PLC

0.1 PLC

0.03 PLC

20 Ω

0.010 + 0.010

0.010 + 0.015

0.03 + 0.03

200 Ω

0.010 + 0.010

0.03 + 0.03

2 kΩ

0.010 + 0.005

0.010 + 0.007

0.03 + 0.03

20 kΩ

0.010 + 0.005

0.010 + 0.007

0.03 + 0.03

200 kΩ

0.010 + 0.005

0.010 + 0.007

0.03 + 0.03

2 MΩ

0.015 + 0.005

0.015 + 0.010

0.060 + 0.010

0.05 + 0.04

20 MΩ

0.025 + 0.005

0.025 + 0.010

0.210 + 0.010

0.22 + 0.05

TEMPERATURE COEFFICIENT; 0 °C - 18 °C AND 28 °C - 55 °C; ±(%READING + %RANGE) / °C

Range

20 MΩ

0.0035 + 0.0004

READING RATE SPECIFICATIONS

RESISTANCE RANGES

Read Rates (60 Hz)

Aperture Times

100 PLC 10 PLC 1 PLC 0.1 PLC 0.03 PLC

IRE: 90 DAY ACCURACY

20 Ω 200 Ω 2 kΩ 20 kΩ 200 kΩ 2 MΩ

EADING + %RANGE)

0.0007 + 0.0002

0.0006 + 0.0001

0.0006 + 0.0002

0.0015 + 0.0004

±5 °C AFTER 1 HR WARM-UP

Readings/s Aperture Times Read Rates (70 Hz) Readings/s

Note

Accuracy @ 100, 10 and 1 PLC @ T

2-wire accuracy is the same as that shown for 4-wire measurements after performing a math null measurement. Without setting the null, readings will

include lead resistance, which is application specific, and add 0.2 Ω of additional error for contact resistance. Typical 24 AWG stranded wire is

0.03 Ω/ft.

0.5 5.0 50.0 500.0 2000.0 100 PLC 10 PLC 1 PLC 0.1 PLC 0.03 PLC

0.4 4.0 45.0 450.0 2000.0

±1 °C after 1 hr warm-up; ±(%Reading + %Range), Sine-wave input ≥ 5% F.S., Low-Frequency Filter ON

CAL

± 5 °C after 1 hr warm-up; ±(%Reading + %Range), Sine-wave input ≥ 5% F.S., Low-Frequency Filter ON

CAL

20 VM2710A Introduction

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SECTION 2

PREPARATION FOR USE

INSTALLATION

When the VM2710A is unpacked from its shipping carton, the contents should include the following items:

(1) VM2710A VXIbus module (1) VM2710A 6.5 Digit Multimeter User’s Manual (this manual)

All components should be immediately inspected for damage upon receipt of the unit.

Once the VM2710A is assessed to be in good condition, it may be installed into an appropriate C-size or D-size VXIbus chassis in any slot other than slot zero. The chassis should be checked to ensure that it is capable of providing adequate power and cooling for the VM2710A. Once the chassis is found adequate, the VM2710A’s logical address and the chassis’ backplane jumpers should be configured prior to the VM2710A’s installation.

CALCULATING SYSTEM POWER AND COOLING REQUIREMENTS

It is imperative that the chassis provide adequate power and cooling for this module. Referr ing to the chassis user’s manual, confirm that the power budget for the system (the chassis and all modules installed therein) is not exceeded and that the cooling system can provide adequate airflow at the specified backpressure.

It should be noted that if the chassis cannot provide adequate power to the module, the instrument may not perform to specification or possibly not operate at all. In addition, if adequate coo ling is not provided, the reliability of the instrument will be jeopardized and permanent damage may occur. Damage found to have occurred due to inadequate cooling would also void the warranty of the module.

SETTING THE CHASSIS BACKPLANE JUMPERS

Please refer to the chassis operation manual for further details on setting the backplane jumpers.

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VTI Instruments Corporation

SET TO 4

1ON2 3 4 5 6 7 8

SET TO 168

1 2 3 4 5 6 7 8

SET TO 8

1ON2 3 4 5 6 7 8

SET TO 255

ON ON

2 3 4 5 6 7 8

1 2 3 4 5 6 7 8

Switch

Position

1 2 4 8

16 32 64

128

Switch

Value

ON ON

(Dynamic)

SETTING THE LOGICAL ADDRESS

The logical address of the VM2710A is set by a single 8-position DIP switch located near the VMIP module’s backplane connectors (this is the only switch on the module). The switch is labeled with positions 1 through 8 and with an ON position. A switch pushed toward the ON legend will signify a logic 1; switches pushed away from the ON legend will signify a logic 0. The switch located at position 1 is the least significant bit while the switch located at position 8 is the most significant bit. See Figure 2-1 for examples of setting the logical address switch.

FIGURE 2-1: LOGICAL ADDRESS SWITCH SETTING EXAMPLES

The VMIP may contain three separate instruments and will allocate logical addresses as required by the VXIbus specification (revisions 1.3 and 1.4). The logical address of the instrument is set on the VMIP carrier. The VMIP logical addresses must be set to an even multiple of 4 unless dynamic addressing is used. Switch positions 1 and 2 must always be set to the OFF position. Therefore, only addresses of 4, 8, 12, 16, ... 252 are allowed. The address switch should be set for one of these legal addresses and the address for the second instrument (the instrument in the center position) will automatically be set to the switch set address plus one; while the third instrument (the instrument in the lowest position) will automatically be set to the switch set address plus two. If dynamic address configuration is desired, the address switch should be set for a value of 255 (All switches set to ON). Upon power-up, the slot 0 resource manager will assign the first available logical addresses to each instrument in the VMIP module.

If dynamic address configuration is desired, the address switch should be set for a value of 255. (All switches set to ON). Upon power-up, the slot 0 resource manager will assign the first available logical addresses to each instrument in the VMIP module.

22 VM2710A Preparation for Use

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PIN NUMBER

SIGNAL

FRONT PANEL TRIGGER INPUT

GUARD CHAN B (Shield)

INPUT CHAN B LOW

INPUT CHAN B HIGH

GUARD CHAN B (Shield)

INPUT CHAN A LOW

INPUT CHAN A HIGH

GUARD CHAN A (Shield)

GROUND

GUARD CHAN B (Shield)

-I:

CHAN B (ac / dc current and 4-wire ohms)

+I:

CHAN B (ac / dc current and 4-wire ohms)

GUARD CHAN A (Shield)

-I:

CHAN A (ac / dc current and 4-wire ohms)

+I:

CHAN A (ac / dc current and 4-wire ohms)

FRONT PANEL INTERFACE WIRING

The VM2710A’s interface is made available on the front panel of the instrument. The VM2710A-1 will have J201 that contains all signals for this instrument. The VM2710A-2 will have J201 and J202, while the VM2710A-3 will have J200, J201, and J202. The wiring for each of these connectors is identical and since each group is treated as a separate instrument, the module will have three A channels and three B channels.

TABLE 2-1: DIGIT MULTIMETER PIN OUTS

The pin locations for J200, J201, and J202 are shown in Figure 2-2:

FIGURE 2-2: J200, J201, AND J202 PIN LOCATIONS

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VTI Instruments Corporation

SECTION 3

PROGRAMMING

INTRODUCTION

The VM2710A is a VXIbus message-based device whose command set is compliant with the Standard Command for Programmable Instruments (SCPI) programming language.

All module commands are sent over the VXIbus backplane to the module. Commands may be in upper, lower or mixed case. All numbers are sent in ASCII decimal unless otherwise noted.

The module recognizes SCPI commands. SCPI is a tree-structured language based on IEEE Std

488.2 Specifications. It utilizes the IEEE STD 488.2 Standard command, and the device dependent commands are structured to allow multiple branches off the same trunk to be used without repeating the trunk. To use this facility, terminate each branch with a semicolon. As an example, DELay:AUTOmatic, SLOPe, and SOURce are all branches off the TRIGger: trunk and can be combined as follows:

TRIGger:DELay:AUTOmatic;SLOPe POS;SOURce EXT

The above command is the same as the these three commands:

TRIGger:DELay:AUTOmatic TRIGger:SLOPe POS TRIGger:SOURce EXT

See the Standard Command for Programmable Instruments (SCPI) Manual, Volume 1: Syntax & Style, Section 6 for more information.

The SCPI commands in this section are listed in upper and lower case. Character case is used to indicate different forms of the same command. Keywords can have both a short form and a long form (some commands only have one form). The short form uses just the keyword characters in uppercase. The long form uses the keyword characters in uppercase plus the keyword characters in lowercase. Either form is acceptable. Note that there are no intermediate forms. All characters of the short form or all characters of the long form must be used. Short forms and long forms may be freely intermixed. The actual commands sent can be in upper case, lower case or mixed case (case is only used to distinguish short and long form for the use r). As an exa mple, these c ommands are all correct and all have the same effect:

24 VM2710A Programming

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TRIGger:SOURce EXTernal trigger:source external TRIGGER:SOURCE EXTERNAL TRIG:SOURce EXTernal TRIG:SOUR EXTernal TRIG:SOUR EXT trig:sour EXT trig:sour ext

The following co mmand is not correct because it uses part of the long form of TRIGger, but not all the characters of the long form:

TRIGG:SOUR EXT (incorrect syntax - extra "G"- only trig or trigger is corre ct)

All of the SCPI commands also have a query form unless otherwise noted. Query forms contain a question mark (?). The query form allows the system to ask what the current set ting of a parameter is. The query form of the command generally replaces the parameter with a question mark (?). Query responses do not include the command header. This means only the parameter is returned: no part of the command or "question" is returned.

When character data is used for a parameter, both short and long forms are recognized. If the command has a query form with character response data, the short form is always returned in upper case. As an example, to find out what the current trigger source setting is use the following command:

TRIG:SOUR?

The response would be:

EXT

This tells the user that the trigger is set to an external source.

Multiple commands can also be combined on one line. To do this, terminate one command with a semicolon and start the next command with a colon. As an example, the trigger source can be set to a positive edge and an output trigger line can be enabled as follows:

TRIG:SOUR EXT;:OUTPUT:TTLTRG1 ON

The IEEE-STD-488.2 Common Commands can be placed anywhere set off from the rest of the command by a semicolon. They can also be placed alone on a line. For example, place the *RST command in front of a setting string as follows:

*RST;OUTP:TTLT 3;POL POS

Note that the OUTP:TTLT comman d s et did not require a leading colon (:) because there was no prior trunk of the SCPI tree.

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VTI Instruments Corporation

NOTATION

Keywords or parameters enclosed in square brackets ([ ]) are optional. If the optional part is a keyword, the keyword can be included or left out. Omitting an optional parameter will cause its default to be used.

Parameters are enclosed by angle brackets (< >). Braces ({ }),or curly brackets, are used to enclose one or more parameters that may be included zero or more times. A vertical bar (|), read as "or", is used to separate parameter alternatives.

REGISTER ACCESS

The VM2710A provides pseudo register access for high-speed data retrieval. The register is read only and has 32-bit information accessible in two 16-bit parts.

There are two methods for accessing the 32-bit information. One method is to access the information as a 32-bit data value with data-high and data-low retrieved from two 16-bit locations. The second method is 32-bit access from one 16-bit location with the data-high/data-low information alternating (data-high is first). This second method of data retrieval must be properly synchronized otherwise the data would all be offset by 16 bits. The register map is specified in Table 3-2.

The eight most significant bits of data-high contain data status and instrument function information. The eight LSB of data-high, along with all 16 bits of data-low, contain the data collected. Figure 3-1 defines the 32 data bit assignments in the register. The instrument Function and Range informati on (bits 24 through 28) is defined in Table 3-1.

Data-High Data-Low

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0

Raw Data

Function and Range Negative Overflow Positive Overflow

FIGURE 3-1: REGISTER ACCESS - 32-BIT

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PON/Test

N/A

N/A 1 0.1 V dc

3.00000e-8

0x00400000

1.0 V dc

3.00000e-7

0x00400000

10 V dc

3.00000e-6

0x00400000

100 V dc

3.00000e-5

0x00400000

300 V dc

7.50000e-5

0x00400000

0.1 V ac

1.50000e-8

0x00000000

1.0 V ac

1.50000e-7

0x00000000

10 V ac

1.50000e-6

0x00000000

100 V ac

1.50000e-5

0x00000000

300 V ac

3.70000e-5

0x00000000

20 Ω

2.50000e-6

0x00000000

200 Ω

2.50000e-5

0x00000000

2 kΩ

2.50000e-4

0x00000000

20 kΩ

2.50000e-3

0x00000000

200 kΩ

2.50000e-2

0x00000000

2 MΩ

2.50000e-1

0x00000000

20 MΩ

2.50000e+0

0x00000000

20 4-Wire Ω

2.50000e-6

0x00000000

200 4-Wire Ω

2.50000e-5

0x00000000

2 k 4-Wire Ω

2.50000e-4

0x00000000

20 k 4-Wire Ω

2.50000e-3

0x00000000

200 k 4-Wire Ω

2.50000e-2

0x00000000

2 M 4-Wire Ω

2.50000e-1

0x00000000

20 M 4-Wire Ω

2.50000e+0

0x00000000

10 mA dc

3.00000e-9

0x00400000

100 mA dc

3.00000e-8

0x00400000

1 A dc

3.00000e-7

0x00400000

10 mA ac

1.50000e-9

0x00000000

100 mA ac

1.50000e-8

0x00000000

1 A ac

1.50000e-7

0x00000000

Value Function Scale Offset

TABLE 3-1: FUNCTION AND RANGE

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Offset

Description

3E 3C 3A 38 36 34 32 30 2E

Write Pointer-Low

Write Pointer-High

Read Pointer-Low

Read Pointer-High

Data / 16-Bit

FIFO Status

Data-Low / 32-Bit

Data-High / 32-Bit

1E 1C 1A 18

[ A32 Pointer Low ]

[ A32 Point er High ]

[ A24 Pointer Low ]

[ A24 Point er High ]

Data Low

Data High

Response [ / Data Extended]

Protocol [ / Signal] Register

[Offset Register]

Status / Control Register

Device Type

ID Register

The VM2710A supports data access by way of the Device Dependent Registers of the VXIbus interface. The following table shows A16 Memory and the VM2710A Data Map.

TABLE 3-2: READ ONLY REGISTERS - A16 ADDRESS SPACE

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Not Used

1=FIFO is EMPTY / 0=FIFO is not EMPTY

1=FIFO is FULL / 0=FIFO is not FULL

1=Data underflow (the FIFO was read when no

1=Data overflow (data wasn't read out of the

DATA 16 high/low indicator

low 16 bits

FIFO size

is installed.

Hardware revision level

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0

Bit Number

data was in the FIFO)

0=There hasn't been a data underflow

Once set, stays set until a *RST.

FIFO fast enough and the FIFO overflowed)

0=There hasn't been a F I FO overflow

Once set, stays set until a *RST.

1= Data read from the DATA 16 register is the

high 16 bits

0=Data read from the DATA 16 register is the

1 = 256 k readings deep

0 = 64 k readings deep

This bit depends on whether the optional RAM

VM2710A Programming 29

IGURE 3-2: FIFO STATUS REGISTER

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REGISTER ACCESS PROGRAMMING EXAMPLE

The following register access example includes parameter set-up, testing and data retrieval:

#include <utility.h> #include <ansi_c.h> #include <nivxi.h> #include "stdio.h" #include <userint.h> #include "vxitech.h" static double volt, voltmin, voltmax, accumulate; static char *reg_base;

int main() {

static INT16 addr = 9; static UINT32 i, window, value; static INT32 int_value; static NIVXI_STATUS ret; static double delta_time, del_time; static UINT8 buf[100];

/* Register access variables */ static UINT16 *data_hi, *data_lo, temp;

Cls ();

/* Initialize the library */ ret = InitVXIlibrary ();

/* Put in a known state */ vxiwrt(addr, "*rst"); vxiwrt(addr, "conf:volt:dc 10"); vxiwrt(addr, "volt:nplc 1");

/* Ask the instrument how big an integration time it is using */ vxiwrtrd(addr, "volt:nplc?", buf);

/* Compute a delay time of one integration value */ del_time = atof(buf) * 0.0166667;

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/* Tell the VM2710A to start and how to run */ vxiwrt(addr, "trace:feed reg"); vxiwrt(addr, "trig:coun 0"); vxiwrt(addr, "init");

/* Remember the current time for later */ delta_time = Timer();

/* Loop sending "trig" and doing a delay until a key is hit */ while (KeyHit () == 0)

{ vxiwrt(addr, "trig"); Delay(del_time); }

/* Wait for instrument to catch up with all the "trig" commands */ vxiwrtrd(addr, "*opc?", buf);

/* Find out how much time it took for the triggers */ delta_time = Timer() - delta_time; printf("Time spent triggering: %f seconds\n", delta_time);

/* Map the A16 address space into our space for quick register access */ reg_base = (char *)MapVXIAddress (1, 0, 1000, &window, &ret) + 0xc000 + addr*0x40;

/* Initialize two pointers for easy access */ data_hi = (INT16*)(reg_base + 0x0020); data_lo = (INT16*)(reg_base + 0x0022);

/* Initialize some variables for measurement statistics */ voltmin = 999.0; voltmax = -999.0; accumulate = 0.0; i = 0;

/* Remember the current time for later */ delta_time = Timer();

/* Repeat while the register at 0x20 is non-zero */ while ((temp = *data_hi) != 0)

{

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/* We already have the high data; get the low and combine into 32 bits */ value = (temp << 16) | *data_lo;

/* Isolate the actual measurement part (remove the rest) */ int_value = value & 0x00ffffff;

/* Convert from an unsigned integer to a signed integer and sign extend */ if (int_value > 0xbfffff) int_value -= 0x1000000; int_value = int_value - 0x00400000; /* Subtract the offset */ volt = (double)int_value * 3.0e-6; /* Multiply by the scale factor */

/* Gather the statistics: high, low and average */ accumulate = accumulate + volt;

if (volt < voltmin)

{ voltmin = volt; }

if (volt > voltmax)

{ voltmax = volt; }

/* Keep track of how many readings we read */ i++; }

/* Find out how much time it took to get the readings */ delta_time = Timer() - delta_time;

/* Compute the average */ accumulate = accumulate / i;

/* Print the information */ printf("Count = %d on %s at %s Elapsed time: %f seconds\n", i, DateStr (), TimeStr (), delta_time);

printf("Average loop time: %f seconds per reading\n", delta_time/i);

printf("Average read rate: %f readings per second\n", i/delta_time);

printf("Readings Min: %f Average: %f Max: %f\n", voltmin, accumulate, voltmax);

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printf("Min delta: %f Max delta: %f Delta hi to lo: %f\n", accumulate-voltmin, voltmax-accumulate, voltmaxvoltmin);

/* Return the mapping window to the system */ ret = UnMapVXIAddress (window);

/* Close the library */ ret = CloseVXIlibrary ();

/* Exit with no error */ return(0);

}

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CALIBRATION

The following is a summary of the CALibration commands that may be useful in calibrating the VM2710A. These commands are described in more detail in the Command Dictionary section of this manual. Some of these commands, if used improperly, can destroy the calibration of the VM2710A. Use these commands with caution.

The following commands should be used with ca ution and onlu be done by qua lified personnel. If used improperly, some of these commands can destroy the calibration of the VM2710A.

CALIBRATION COMMANDS

CALibration:CONVert:GAIN? Reports the gain of the current function and range

setting of the VM2710A. See the Scale column in Table 3-1 Function and Range. This query returns the constants for the currently set range and function.

CALibration:CONVert:GAIN:CURRent:AC? Reports the gain for a specified range in the ac

Current function. See the Scale column in Table 3-1 Function and Range.

CALibration:CONVert:GAIN:CURRent[:DC]? Reports the gain for a specified range in the dc

current function. See the Scale column in Table 3-1 Function and Range.

CALibration:CONVert:GAIN:FRESistance? Reports the gain for a specified range in the 4-wire

ohms function. See the Scale column in Table 3-1 Function and Range.

CALibration:CONVert:GAIN:RESistance? Reports the gain for a specified range in the 2-wire

ohms function. See the Scale column in Table 3-1 Function and Range.

CALibration:CONVert:GAIN:VOLTage:AC? Reports the gain for a specified range in the ac

voltage function. See the Scale column in Table 3-1 Function and Range.

CALibration:CONVert:GAIN:VOLTage[:DC]? Reports the gain for a specified range in the dc

voltage function. See the Scale column in Table 3-1 Function and Range.

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CALibration:CONVert:OFFSet? Reports the offset of the current function and range

CALibration:CONVert:OFFSet:CURRent:AC? Reports the offset for a specified range in the ac

CALibration:CONVert:OFFSet:CURRent[:DC]? Reports the offset for a specified range in the dc

CALibration:CONVert:OFFSet:FRESistance? Reports the offset for a specified range in the 4-wire

CALibration:CONVert:OFFSet:RESistance? Reports the offset for a specified range in the 2-wire

CALibration:CONVert:OFFSet:VOLTage:AC? Reports the offset for a specified range in the ac

CALibration:CONVert:OFFSet:VOLTage[:DC]? Reports the offset for a specified range in the dc

CALibration:DEFault This command sets the Gain and Offset values to

CALibration:LFRequency The Calibration Line Frequency command selects the

setting of the VM2710A. See the Offset column in Table 3-1 Function and Range. This query returns the constants for the currently set range and function.

Current function. See the Offset column in Table 3-1 Function and Range.

current function. See the Offset column in Table 3-1 Function and Range.

ohms function. See the Offset column in Table 3-1 Function and Range.

voltage function. See the Offset column in Table 3-1 Function and Range.

their respective default values. This command is issued by the driver function vtvm2710_calDef. Note that CAL:SEC:STAT must first be OFF.

line frequency reference used by the A/D converter. The command parameters are as follows:

50 selects 50 Hz line freq. ref. 60 selects 60 Hz line freq. ref.

400 actually uses 50 Hz reference; however, since 50 Hz is a sub-harmonic of 400 Hz, it provides normal mode rejection of power line related noise

MINimum Selects 50 Hz line freq. ref. MAXimum Selects 60 Hz line freq. ref.

This command set can be overridden by a 50 Hz or 60 Hz aperture time set; the last command executed has priority. The *RST command has no affect on this setting since it is stored in non-volatile memory.

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CALibration:LFRequency? The query will report the current frequency setting of

50 Hz or 60 Hz. If MINimum or MAXimum is specified, it will report the values available, which are 50 Hz or 60 Hz, respectively.

CALibration:NUMBer? The Calibration Number is the number of times the

device has been calibrated. This number is incremented each time the CAL:STORE command is issued to the device.

CALibration:RESet This command will load the Calibration DACs from

the calibration constants stored in non-volatile memory. This allows the user to modify Calibration DAC values with the ability to restore the original values. Note that CAL:SEC:STAT must first be OFF.

CALibration:SECure:CODE This command/query sets or queries the

CALibration:SECure:CODE. Both the command and query require the CALibration:SECure:STATe to be OFF. There is no driver function for this command/query.

CALibration:SECure[:STATe] This command disables or enables the Calibration

Secure state. This command is NOT dependant on any other settings on the VM2710A other than the CALibration:SECure:CODE. This command is performed by the driver function vtvm2710_enableDisableSecState.

CALibration:STORe This command stores the currently loaded calibration

values into Non-volatile memory. Before this command is issued, the instrument will use the currently loaded values, but will not save these values after power is removed, or a reset is issued. The vtvm2710_storeCalibrationData driver function performs this command. Note that CAL:SEC:STAT must first be OFF.

CALibration:ZERO Sets the range for the zero measurement in the dc

voltage function and takes a zero reading. If no value is entered, then the VM2710A will take a zero measurement for each of the voltage ranges, thus taking more time.

CALibration:ZERO:UPDate Updates the current zero measurements to later be

stored using the Calibration Store command.

See the Command Dictionary section for more information on the Calibration commands.

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MFGTEST COMMANDS

The following are low-level commands that may be used in calibrating the VM2710A. They are described here as an aid in understanding the VM2710A calibration programs. Most users will never need to use these commands. Some of these commands, if used improperly, can destroy the calibration of the VM2710A. Use these commands with caution.

The following commands should be used with ca ution and onlu be done by qua lified personnel. If used improperly, some of these commands can destroy the calibration of the VM2710A.

MFGTEST 0 #O This command sets the CAL register in the converter,

where #O is the value to be set, and is dependant only on the Aperture setting.

MFGTEST 1 #S This command sets the SCALE register in the

converter, where #S is the value to be set, and is only on the Aperture setting.

MFGTEST 2 #H0120 This comman d writes to the COMMAND reg ister in

the converter.

MFGTEST? 2 #addr Read a Flash byte; used to read headers.

MFGTEST 4 #F This command writes to the ac DAC, where #F is a

value between 1 and 128. The equivalent command is MFGTEST:ACDAC #F.

MFGTEST? 4 Reports the ac DAC value. The equivalent command

is MFGTEST:ACDAC?.

MFGTEST 5 #S Sets the gain slope, where #S is the Calibration

constant for the Slope setting, and is dependent on the settings for the Aperture, Measurement Function, and range. The equivalent command is MFGTEST:CAL_SCALE #S.

MFGTEST? 5 Reports the gain slope value. The equivalent

command is MFGTEST:CAL_SCALE?.

MFGTEST 6 #O Sets the offset, where #O is the Calibration constant

for the offset setting, and is dependent on the settings for the Aperture, Measurement Function, and range. The equivalent command is MFGTEST:CAL_OFFSET #O.

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MFGTEST? 6 Reports the offset value. The equvalent command is

MFGTEST:CAL_OFFSET?.

MFGTEST 7 #S Sets the converter scale value for non-vol, where #S

is the value to be set.

MFGTEST? 7 Reports the converter scale value.

MFGTEST 8 #O Sets the converter offset value for non-vol, where #O

is the value to be set.

MFGTEST? 8 Reports the converter offset value.

MFGTEST 10 #? Sets the readings per trigger.

MFGTEST 10 #L #C Sets a linearization reference point.

MFGTEST? 10 #L Reports the linearization reference pint value.

MFGTEST 11 #L #C Sets a linearization slope. There are 16 linearization

constants (0 - 15) for each aperture setting. #L indicates which linearization segment is being set, and #C is the constant to be loaded for the selected linearization segment in the set aperture.

MFGTEST? 11 #L Reports the linearization slope value.

MFGTEST 12 #L #C Sets a linearization offset. There are 16 linearization

constants (0 - 15) for each aperture setting. #L indicates which linearization segment is being set, and #C is the constant to be loaded for the selected linearization segment in the set aperture.

MFGTEST? 12 #L Reports the linearization offset v alue.

MFGTEST 15 #count Increment or decrement the gain slope by #count,

where #count is a positive (increment) or negative (decrement) integer. See MFGTEST 5.

MFGTEST 16 #count Increment or decrement the offset by #count, where

#count is a positive (increment) or negative (decrement) integer. See MFGTEST 6.

MFGTEST 17 #count Increment or decrement the converter scale value by

#count, where #count is a positive (increment) or negative (decrement) integer. See MFGTEST 7.

MFGTEST 18 #count Increment or decrement the converter offset value by

#count, where #count is a positive (increment) or negative (decrement) integer. See MFGTEST 8.

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MFGTEST 20 <boolean> Set to 0 the ‘251 processor scaling is OFF; set to 1

MFGTEST? 20 Reports which processor is doing the corrections;

MFGTEST 22 <boolean> Set to 0 (OFF) there is no overflow processing, no

MFGTEST? 22 Reports if overflow processing, math functions, and

MFGTEST 23 <boolean> Set to 0 the ‘340 processor linearization is OFF; set

MFGTEST? 23 Reports if the ‘340 processor linearization is ON (1)

MFGTEST? 30 Read the CAL register in the converter.

MFGTEST? 31 Read the SCALE register in the converter.

MFGTEST 32 <boolean> Set to 0 the ‘251 processor linearization is OFF; set

MFGTEST? 32 Read the ‘251 main header pointer; can be used to

MFGTEST? 33 Read the ‘251 subs header pointer; can be used to

MFGTEST? 34 Read the ‘251 equ header pointer; can be used to get

MFGTEST? 35 Read the ‘251 math header pointer; can be used to

the ‘251 processor scaling is ON.

‘251 or “340.

math, and no scale factors for range.

range scale factors are enabled (1) or disabled (0).

to 1 the ‘340 processor linearization is ON.

or OFF (0).

to 1 the ‘251 processor linearization is ON.

get the file revision of the ‘251 code.

the file revision of the ‘251 code.

get the file revision of the ‘251 code.

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SECTION 4

COMMAND DICTIONARY

INTRODUCTION

This section presents the instrument command set. It begins with an alphabetical list of all the commands supported by the VM2710A divided into three sections: IEEE 488.2 commands, the instrument specific or device dependent SCPI commands, and the required SCPI commands. With each command is a brief description of its function.

The remainder of this section is devoted to describing each command, one per page, in detail. The description is presented in a way to assist the user in the use of each command. Every command entry describes the exact command and/or query syntax, the use and range of parameters, and a description of the command’s purpose.

ALPHABETICAL COMMAND LISTING

The following tables provide an alphabetical listing of each command supported by the VM2710A along with a brief definition. If an X is found in the column titled *RST, then the value or se tting controlled by this command is possibly changed by the execution of the *RST command. If no X is found, then *RST has no effect. The Reset Value column gives the value of each command’s setting when the unit is powered up or when a *RST command is executed.

The following table lists the IEEE 488.2 Common (*) Commands. See the IEEE Standard 488.2 for more information on these commands.

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Command

Description

*RST

*RST Value

*CLS

Clears the Status Register

*ESE

Sets the Event Status Enable Register

*ESR?

Query the Standard Event Status Register

N/A

*IDN?

Query the module identification string

N/A

*OPC

Set the OPC bit in the Event Status Register

N/A

*RST

Resets the module to a known state

N/A

*SRE

Set the service request enable register

N/A

*STB?

Query the Status Byte Register

N/A

*TRG

Causes a trigger event to occur

N/A

*TST?

Starts and reports a self-test procedure

N/A

*WAI

Halts execution and queries

TABLE 4-1: IEEE 488.2 COMMON COMMANDS

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ABORt

Return to idle state

N/A

CALCulate:[FUNCtion:]AVERage:AVERage?

Reports the average reading

N/A

CALCulate:[FUNCtion:]AVERage:COUNt?

Reports the number of readings

N/A

CALCulate:[FUNCtion:]AVERage:MAXimum?

Reports the highest reading

N/A

CALCulate:[FUNCtion:]AVERage:MINimum?

Reports the lowest reading

N/A

CALCulate:[FUNCtion:]FUNCtion

Sets the CALCulate function

NULL

CALCulate:[FUNCtion:]LIMit:LOWer

Sets the lower limit value

CALCulate:[FUNCtion:]LIMit:LOWer:TTLTrg

Sets the trigger line

NONE

CALCulate:[FUNCtion:]LIMit:UPPer

Sets the upper limit value

CALCulate:[FUNCtion:]LIMit:UPPer:TTLTrg

Sets the trigger line

NONE

CALCulate:NORead

Returns only the cal culation values

CALCulate:[FUNCtion:]NULL:OFFSet

Sets the offset value

CALCulate:STATe

Enables/disables the CALCulate function

CALibration:CONVert:GAIN?

Reports current function gain

N/A

CALibration:CONVert:GAIN:CURRent:AC?

Reports ac current gain

N/A

CALibration:CONVert:GAIN:CURRent[:DC]?

Reports dc current gain

N/A

CALibration:CONVert:GAIN:FRESistance?

Reports 4-wire ohms gain

N/A

CALibration:CONVert:GAIN:RESistance?

Reports 2-wire ohms gain

N/A

CALibration:CONVert:GAIN:VOLTage:AC?

Reports ac voltage gain

N/A

CALibration:CONVert:GAIN:VOLTage[:DC]?

Reports dc voltage gain

N/A

CALibration:CONVert:OFFSet?

Reports current function offset

N/A

CALibration:CONVert:OFFSet:CURRent:AC?

Reports ac current offset

N/A

CALibration:CONVert:OFFSet:CURRent[:DC]?

Reports dc current offset

N/A

CALibration:CONVert:OFFSet:FRESistance?

Reports 4-wire o hms offset

N/A

CALibration:CONVert:OFFSet:RESistance?

Reports 2-wire o hms offset

N/A

CALibration:CONVert:OFFSet:VOLTage:AC?

Reports ac voltage offset

N/A

CALibration:CONVert:OFFSet:VOLTage[:DC]?

Reports dc voltage offset

N/A

CALibration:DEFault

Sets calibration values to defaults

N/A

CALibration:LFRequency

Selects line frequency reference used by the multimeter's A/D converter

N/A

CALibration:NUMBer?

Reports the number of times the multimeter has been calibrated

N/A

CALibration:RESet

Restores calibration DAC values

N/A

CALibration:SECure:CODE

Calibration security password

N/A

CALibration:SECure[:STATe]

Enable/disables calibration security

CALibration:STORe

Saves the current calibration constants into non-volatile memory

N/A

CALibration:ZERO

Sets the range for the zero measurement

ALL Ranges

CALibration:ZERO:UPDate

Updates the current zero measurements

N/A

CONFigure?

Reports the most recent configuration set

N/A

CONFigure:CURRent:AC

Selects the ac Current function

Autoranging

1 PLC

CONFigure:CURRent[:DC]

Selects the dc current function

Autoranging

1 PLC

CONFigure:FRESistance

Selects 4-wire ohms function

Autoranging

1 PLC

CONFigure:RESistance

Selects the 2-wire ohms function

Autoranging

1 PLC

TABLE 4-2: INSTRUMENT SPECIFIC SCPI COMMANDS

Command Description *RST Reset Value

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CONFigure:VOLTage:AC

Selects the ac-coupled rns voltage function

Autoranging

1 PLC

CONFigure:VOLTage[:DC]

Selects the dc voltage function

Autoranging

1 PLC

FETCh?

Retrieves most recent measurements stored by last INITiate command

N/A

FORMat

Sets the measurement data format

Exponential

format

FORMat:OVERflow

Sets the OVERflow function

NONE

INITiate[:IMMediate]

Places the multimeter in the wait-fortrigger state

Idle state

INPut:SOURce

Selects input channel

Input A

MATH

Selects math function

MATH:FACTor

Sets the factor value

MATH:OFFSet

Sets the offset value

MEASure:CURRent:AC?

Selects the ac current function

Autoranging

1 PLC

MEASure:CURRent[:DC]?

Selects the dc current function

Autoranging

1 PLC

MEASure:FRESistance?

Selects 4-wire ohms functi on

Autoranging

1 PLC

MEASure:RESistance?

Selects the 2-wire ohms functio n

Autoranging

1 PLC

MEASure:VOLTage:AC?

Selects the ac-coupled rms voltage function

Autoranging

1 PLC

MEASure:VOLTage[:DC]?

Selects the dc voltage function

Autoranging

1 PLC

MFGTEST 99

Enables or disables the ohms current function

OUTPut:TTLTrg

Selects the a specified VXIbus trigger line (0-7)

(lines 0 - 7 off)

OUTPut[:TTLTrg]:POLarity

Sets the output signal polarity

NEG

RANGe:AUTOmatic

Enables the autoranging function

RANGe:DELay

Sets the delay (settling) time after a function and/or range change

Default Delay -

see command

RANGe:DELay:AUTOmatic

Uses the default delay times

READ?

Transfers the readings to the output buffer

N/A

SAMPle:COUNt

Sets the number of r eadings per trigger

SAMPle:SOURce

Selects the pacing source for the sample rate

IMM

SAMPle:TIMer

Sets the period between readings

0.0

[SENSe:]BANDwidth:DETector

Selects slow, medium or fast measurement mode

20 (slow mode)

[SENSe:]CURRent:AC:RANGe

Selects the ac current range

Autoranging

[SENSe:]CURRent:APERture

Sets the integration time for current

1.67E-02

2E-02 (50 Hz)

[SENSe:]CURRent[:DC]:RANGe

Selects the dc current range

Autoranging

[SENSe:]CURRent:NPLC

Sets the integration time in Power Line Cycles (PLCs)

[SENSe:]CURRent:RANGe:AUTOmatic

Enables the autoranging function

Command Description *RST Reset Value

VM2710A Command Dictionary 43

measurements

(60 Hz) or

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[SENSe:]CURRent:RANGe:DELay:AUTOmatic

Enables the default delay times

[SENSe:]CURRent:RESolution:AC

Selects the resolution for ac measurements

Default

Autoranging

[SENSe:]CURRent:RESolution[:DC]

Selects the resolution for dc measurements

Default

Autoranging

[SENSe:]FUNCtion

Selects the measurement function

VOLTage[:DC]

[SENSe:]RESistance:APERture

Sets the integration time for resistance

1.67E-02

2E-02 (50 Hz)

[SENSe:]RESistance:NEGative

Enables or disables negative resistance value reporting

[SENSe:]RESistance:NPLC

Sets the integration time in Power Line Cycles (PLCs)

[SENSe:]RESistance:RANGe

Selects the range for resistance measurements

Autoranging

[SENSe:]RESistance:RANGe:AUTOmatic

Enables/disables the autorange function

[SENSe:]RESistance:RANGe:DELay:AUTOmatic

Sets the delay time to the default values

[SENSe:]RESistance:RESolution

Selects the resolution for resistance measurements

Default

Autoranging

[SENSe:]VOLTage:AC:RANGe

Selects the range for ac voltage measurements

Autoranging

[SENSe:]VOLTage:APERture

Sets the integration time for voltage

1.67E-02

2E-02 (50 Hz)

[SENSe:]VOLTage[:DC]:RANGe

Selects the range for dc voltage measurements

Autoranging

[SENSe:]VOLTage:NPLC

Sets the integration time in Power Line Cycles (PLCs)

[SENSe:]VOLTage:RANGe:AUTOmatic

Enables/disables the autorange function

[SENSe:]VOLTage:RANGe:DELay:AUTOmatic

Sets the delay time to the default values

[SENSe:]VOLTage:RESolution:AC

Selects the resolution for ac voltage measurements

Default

Autoranging

[SENSe:]VOLTage:RESolution[:DC]

Selects the resolution for dc voltage measurements

Default

Autoranging

TEST?

Performs self-test and reports results

N/A

TRACe:FEED

Sets data retrieval method

OFF

TRIGger:BUFFered

Enables/disables the multimeter's trigger buffer

TRIGger:COUNt

Sets the number of triggers

TRIGger:DELay

Sets the delay period between trigger and the start of the measurement

TRIG:DEL:AU

TRIGger:DELay:AUTOmatic

Enables/disables automatic trigger delay

TRIGger[:IMMediate]

Causes the multimeter to trigger

mode

N/A

TRIGger:SLOPe

Selects rising or falling edge of trigger signal

NEG

TRIGger:SOURce

Selects trigger source

IMM

Command Description *RST Reset Value

measurements

(60 Hz) or

44 VM2710A Command Dictionary

immediately when in the wait-for-trigger

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STATus:OPERation:CONDition?

Queries the Operation Status Condition Register.

STATus:OPERation:ENABle

Sets the Operation Status Enable Register.

STATus:OPERation[:EVENt]?

Queries the Operation Status Event Register.

STATus:PRESet

Presets the Status Register.

STATus:QUEStionable:CONDition?

Queries the Questionable Status Condition Register.

STATus:QUEStionable:ENABle

Sets the Questionable Status Enable Register.

STATus:QUEStionable[:EVENt]?

Queries the Questionable Status Event Register.

SYSTem:ERRor?

Queries the Error Queue.

Clears queue

SYSTem:VERsion?

Queries which version of the SCPI

complies.

N/A

Command Description *RST *RST Value

TABLE 4-3: REQUIRED SCPI COMMANDS

standard to which the module

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Purpose

Describes the purpose of the command.

Type

Describes the type of command such as an event or setting.

Comma nd Syntax

Details the exact command format.

Command Parameters

Describes the parameters sent with the command and their legal range.

Reset Value

Describes the values assumed when the *RST command is sent.

Query Syntax

Details the exact query form of the command.

Query Parameters

Describes the parameters sent with the command and their legal range. The default parameter values are assumed the same as in the command form unless described otherwise.

Query Response

Describes the format of the query response and the valid range of output.

Description

Describes in detail what the command does and refers to additional sources.

Examples

Present the proper use of each command and its query (when available).

Related Commands

Lists commands that affect the use of this command or commands that are affected by this command.

COMMAND DICTIONARY

The remainder of this section is devoted to the actual command dictionary. Each command is fully described on its own page. In defining how each command is used, the following items are described:

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Purpose

Clears all status and event registers

Type

IEEE 488.2 Common Command

Command Syntax

*CLS

Command Parameters

N/A

*RST Value

N/A

Query Syntax

N/A

Query Parameters

N/A

Query Response

N/A

Description

This command clears the Status Event Register, Operation Status Register and the

Examples

Command / Query

Response (Description)

Related Commands

N/A

IEEE 488.2 COMMON COMMANDS

*CLS

Questionable Data/Signal Register. It also clears the OPC flag and clears all queues (except the output queue).

*CLS

(Clears all status a nd event registers)

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Purpose

Sets the bits of the Event Status Enable Register

Type

IEEE 488.2 Common Command

Command Syntax

*ESE <mask>

Command Parameters

<mask> = numeric ASCII value

*RST Value

N/A, the parameter is required

Query Syntax

*ESE?

Query Parameters

N/A

Query Response

Numeric ASCII value from 0 to 255

Description

The Event Status Enable command is used to set the bits of the Event Status Enable

Examples

Command / Query

Response (Description)

Related Commands

*ESR?

*ESE

Register. See ANSI/IEEE 488.2-1987 section 11.5.1 for a complete description of the ESE register. A value of 1 in a bit position of the ESE register enables generation o f the ESB (Event Status Bit) in the Status Byte by the corresponding bit in the ESR. If the ESB is set in the SRE register then an interrupt will be generated. See the ESR? command for details regarding the individual bits. The ESE register layout is:

Bit 0 - Operation Complete Bit 1 - Request Control Bit 2 - Query Error Bit 3 - Device Dependent Error Bit 4 - Execution Error Bit 5 - Command Error Bit 6 - User Request Bit 7 - Power On

The Event Sta tus Enable query reports the current contents of the Event Status Enable

*ESE 36

*ESE?

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Purpose

Queries and clears the Standard Event Status Register

Type

IEEE 488.2 Common Command

Command Syntax

N/A

Command Parameters

N/A

*RST Value

N/A

Query Syntax

ESR?

Query Parameters

N/A

Query Response

Numeric ASCII value from 0 to 255

Description

The Event Sta tus Register query - queries and clears the contents of the Standard Event

Examples

Command / Query

Response (Description)

Related Commands

*ESE

*ESR?

Status Register. This register is used in conjunction with the ESE register to generate the ESB (Event Status Bit) in the Status Byte. The layout of the ESR is:

Bit 0 - Operation Complete Bit 1 - Request Control Bit 2 - Query Error Bit 3 - Device Dependent Error Bit 4 - Execution Error Bit 5 - Command Error Bit 6 - User Request Bit 7 - Power On

The Operation Complete bit is set when it receives an *OPC command.

The Query Error bit is set when data is over-written in the output queue. This could occur if one query is followed by another without reading the data from the first query.

The Execution Error bit is set when an execution error is detected. Errors that range from -200 to -299 are execution errors.

The Command Error bit is set when a command error is detected. Errors that range from -100 to -199 are command errors.

The Power On bit is set when the module is first powered on or after it receives a reset via the VXI Control Register. Once the bit is cleared (by executing the *ESR? command) it will remain cleared.

*ESR?

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Purpose

Queries the module for its identification string

Type

IEEE 488.2 Common Command

Command Syntax

N/A

Command Parameters

N/A

*RST Value

N/A

Query Syntax

*IDN?

Query Parameters

N/A

Query Response

ASCII character string

Description

The Identification query returns the identification string of the module. The response is

Examples

Command / Query

Response (Description)

Related Commands

N/A

*IDN?

divided into four fields separated by commas. The first field is the manufacturer’s name, the second field is the model number, the third field is an optional serial number and the fourth field is the firmware revision number. If a serial number is not supplied, the third field is set to 0 (zero).

*IDN?

VTI Instruments,VM2710A,0,1.0 (The revision listed here is for reference only; the response will always be the instrument's current rev ision.)

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Purpose

Sets the OPC bit in the Event Status Register

Type

IEEE 488.2 Common Command

Command Syntax

*OPC

Command Parameters

N/A

*RST Value

N/A

Query Syntax

*OPC?

Query Parameters

N/A

Query Response

Description

The Operation Complete command sets the OPC bit in the Event Status Register when

Examples

Command / Query

Response (Description)

Related Commands

*WAI

*OPC

all pending operations have completed. The Operation Complete query will return a 1 to the output queue when all pending operations have completed.

*OPC

*OPC?

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Purpose

Resets the module’s hardware and software to a known state

Type

IEEE 488.2 Common Command

Command Syntax

*RST

Command Parameters

N/A

*RST Value

N/A

Query Syntax

N/A

Query Parameters

N/A

Query Response

N/A

Description

The Reset command resets the module’s hardware and software to a known state. See

Examples

Command / Query

Response (Description)

Related Commands

N/A

*RST

the command index at the beginning of this chapter for the default parameter values used with this command.

*RST

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Purpose

Sets the service request enable register

Type

IEEE 488.2 Common Command

Command Syntax

*SRE <mask>

Command Parameters

<mask> = Numeric ASCII value from 0 to 255

*RST Value

TBD

Query Syntax

*SRE?

Query Parameters

N/A

Query Response

Numeric ASCII value from 0 to 255

Description

The service request enable mask is used to control which bits in the status byte generate

Bit 7 - Operation Status Summary

Examples

Command / Query

Response (Description)

Related Commands

N/A

*SRE

backplane interrupts. If a bit is set in the mask that newly enables a bit set in the status byte and interrupts are enabled, the module will generate a REQUEST TRUE event via an interrupt. See the *STB? Command for the layout of bits. Note: Bit 6 is always internally cleared to zero as required by IEEE 488.2 section 11.3.2.3.

The layout of the Service Request Enable Register is:

Bit 0 - Unused Bit 1 - Unused Bit 2 - Error Queue Has Data Bit 3 - Questionable Status Summary (not used) Bit 4 - Message Available Bit 5 - Event Status Summary Bit 6 - 0

*SRE 4

*SRE?

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Purpose

Queries the Status Byte Register

Type

IEEE 488.2 Common Command

Command Syntax

N/A

Command Parameters

N/A

*RST Value

N/A

Query Syntax

*STB?

Query Parameters

N/A

Query Response

Numeric ASCII value from 0 to 255

Description

The Read Status Byte query fetches the current contents of the Status Byte Register.

Bit 7 - Operation Status Summary

Examples

Command / Query

Response (Description)

Related Commands

N/A

*STB?

See the IEEE 488.2 specification for additional information regarding the Status byte Register and its use. The layout of the Status Register is:

Bit 0 - Unused Bit 1 - Unused Bit 2 - Error Queue Has Data Bit 4 - Questionable Status Summary (not used) Bit 5 - Message Available Bit 6 - Master Summary Status

*STB?

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Purpose

Causes a trigger event to occur

Type

IEEE 488.2 Common Command

Command Syntax

*TRG

Command Parameters

N/A

*RST Value

N/A

Query Syntax

N/A

Query Parameters

N/A

Query Response

N/A

Description

The Trigger command causes a trigger event to occur.

Examples

Command / Query

Response (Description)

Related Commands

N/A

*TRG

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Purpose

Causes a self-test procedure to occur and queries the results

Type

IEEE 488.2 Common Command

Command Syntax

N/A

Command Parameters

N/A

*RST Value

N/A

Query Syntax

*TST?

Query Parameters

N/A

Query Response

Numeric ASCII value from 0 to 143

Description

The Self-Test query causes the VM2710A to run its self-test procedures and report on

Examples

Command / Query

Response (Description)

Related Commands

N/A

*TST?

the results. A value of 0 means there were no errors, all tests passed. A non-zero value is composed of the following:

1 – Non-volatile memory test failure 2 – FPGA data path failure 4 – Internal resistance measurement failure

The value returned is the sum of all failures.

*TST?

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Purpose

Halts execution of additional commands and queries until the No Operation Pending message is true

Type

IEEE 488.2 Common Command

Command Syntax

*WAI

Command Parameters

N/A

*RST Value

N/A

Query Syntax

N/A

Query Parameters

N/A

Query Response

N/A

Description

The Wait to Continue command halts the execution of commands and queries until the

Examples

Command / Query

Response (Description)

Related Commands

*OPC

*WAI

No Operation Pending message is true. This command makes sure that all previous commands have been executed before proceeding. It provides a way of synchronizing the module with its commander.

*WAI

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Purpose

Removes the multimeter from the wait-for-trigger state and places it in the idle state

Type

Device dependent SCPI command

Command Syntax

ABORt

Command Parameters

N/A

*RST Value

N/A

Query Syntax

N/A

Query Parameters

N/A

Query Response

N/A

Description

The ABORt command removes the VM2710A from the wait-for-trigger state and

error is generated.

Examples

Command / Query

Response (Description)

Related Commands

INITiate TRIGger:SOURce

INSTRUMENT SPECIFIC SCPI COMMANDS

ABORt

places it in the idle state. This command can only be used when the trigger source is set to BUS or HOLD.

ABORt does not affect any other settings. When the INITiate command is sent, the trigger system will respond as it did before.

When the trigger source is set to BUS or HOLD, the ABORt command places the VM2710A in i dle state. Subse quent triggers sent a re ignored and t he "Trigger i gnored"

ABOR

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Purpose

Reports the highest reading

Type

Query

Command Syntax

N/A

Command Parameters

N/A

*RST Value

N/A

Query Syntax

CALCulate:AVERage:MAXimum?

Query Parameters

N/A

Query Response

number

Description

Queries and reports the highest reading value that has been taken. The

Examples

Command / Query

Response (Description)

Related Commands

CALCulate:[FUNCtion:]AVERage:AVERage?

CALCulate:[FUNCtion:]STATe

CALCulate:AVERage:MAXimum?

CALCulate:FUNCtion must first be set to AVERage.

CALC:AVER

CALC:AVER:MAX?

CALCulate:[FUNCtion:]AVERage:COUNt? CALCulate:[FUNCtion:]AVERage:MINimum? CALCulate:[FUNCtion:]FUNCtion

(Sets the calculate function to keep track on reading averages.)

(Reports the highest reading value)

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Purpose

Reports the lowest reading

Type

Query

Command Syntax

N/A

Command Parameters

N/A

*RST Value

N/A

Query Syntax

CALCulate:AVERage:MINimum?

Query Parameters

N/A

Query Response

number

Description

Queries and reports the lowest reading that has been taken. The CALCulate:FUNCtion

Examples

Command / Query

Response (Description)

Related Commands

CALCulate:[FUNCtion:]AVERage:AVERage?

CALCulate:AVERage:MINimum?

must first be set to AVERage.

CALC:FUNC:AVER

CALC:AVER:MIN?

CALCulate:[FUNCtion:]AVERage:COUNt? CALCulate:[FUNCtion:]AVERage:MAXimum? CALCulate:[FUNCtion:]FUNCtion CALCulate:[FUNCtion:]STATe

Sets the calculate function to keep track of reading averages.

(Reports the lowest reading value)

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Purpose

Sets the calculate function

Type

Setting

Command Syntax

CALCulate:FUNCtion <function>

Command Parameters

<function> = AVERage | LIMit | NULL

*RST Value

NULL

Query Syntax

CALCulate:FUNCtion?

Query Parameters

N/A

Query Response

AVER | LIM | NULL

Description

This command sets the calculate function to either AVERage, LIMit or NULL. The

Examples

Command / Query

Response (Description)

Related Commands

CALCulate:[FUNCtion:]AVERage

CALCulate:[FUNCtion:]STATe

CALCulate:FUNCtion

reset value is NULL.

CALC:FUNC:AVER

CALCulate:[FUNCtion:]LIMit CALCulate:[FUNCtion:]NULL

(Sets the calculate function to keep track of reading averages.)

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Purpose

Reports the average reading

Type

Query

Command Syntax

N/A

Command Parameters

N/A

*RST Value

N/A

Query Syntax

CALCulate:[FUNCtion:]AVERage:AVERage?

Query Parameters

N/A

Query Response

This query ret urns the sum of the readings t aken divided by the numbe r of reading counts.

Description

Queries and reports the average reading taken. The CALCulate:FUNCtion must first be

Examples

Command / Query

Response (Description)

Related Commands

CALCulate:[FUNCtion:]AVERage:COUNt?

CALCulate:[FUNCtion:]STATe

CALCulate:[FUNCtion:]AVERage:AVERage?

set to AVERage.

CALC:AVER

CALC:AVER:AVER?

CALCulate:[FUNCtion:]AVERage:MAXimum? CALCulate:[FUNCtion:]AVERage:MINimum? CALCulate:[FUNCtion:]FUNCtion

(Sets the calculate function to keep track of readings averages)

(readings sum)/(readings count) (Reports the average reading taken)

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Purpose

Reports the reading count

Type

Query

Command Syntax

N/A

Command Parameters

N/A

*RST Value

N/A

Query Syntax

CALCulate:[FUNCtion:]AVERage:COUNt?

Query Parameters

N/A

Query Response

Returns the number of reading counts taken while the VM2701A ha s been CALCulate:FUNCtion:AVERage mode

Description

Queries and reports the reading count; the number of readings that have been taken.

Examples

Command / Query

Response (Description)

Related Commands

CALCulate:[FUNCtion:]AVERage:AVERage?

CALCulate:[FUNCtion:]STATe

CALCulate:[FUNCtion:]AVERage:COUNt?

The CALCulate:FUNCtion must first be set to AVERage.

CALC:AVER

CALC:COUN?

CALCulate:[FUNCtion:]AVERage:MAXimum? CALCulate:[FUNCtion:]AVERage:MINimum? CALCulate:[FUNCtion:]FUNCtion

(Sets the calculate function to keep track of reading averages)

(Reports the reading count)

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Purpose

Sets the lower limit value

Type

Setting

Command Syntax

CALCulate:[FUNCtion:]LIMit:LOWer <limit>

Command Parameters

<limit> = number | MAXimum | MINimum | LAST

*RST Value

Query Syntax

CALCulate:[FUNCtion:]LIMit:LOWer?

Query Parameters

N/A

Query Response

number

Description

This command sets the lower reading limit for the current function and range. If a

Examples

Command / Query

Response (Description)

Related Commands

CALCulate:FUNCtion

CALCulate:[FUNCtion:]LIMit:UPPer

CALCulate:[FUNCtion:]LIMit:LOWer

measurement is below this set limit, the limit low failure bit would be set in the Status Questionable register:

Limit Low Failure: 0x0800 Limit Low Failure Pulse: 0x2000

CALC:LIM:LOW 3.5

CALC:LIM:LOW LAST

CALCulate:[FUNCtion:]LIMit:LOWer:TTLTrg

(Sets the lower limit to 3.5 V in the 10 V range) (Sets the lower limit to the value of th e last

measurement)

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Purpose

Sets the trigger line

Type

Setting

Command Syntax

CALCulate:[FUNCtion:]LIMit:LOWer:TTLTr g <trigger line>

Command Parameters

<trigger line> = 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | NO NE

*RST Value

NONE

Query Syntax

CALCulate:[FUNCtion:]LIMit:LOWer:TTLTrg?

Query Parameters

N/A

Query Response

0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | NO NE

Description

This command enables the below limit failure to also be read off one of the backplane

Examples

Command / Query

Response (Description)

Related Commands

CALCulate:FUNCtion CALCulate:[FUNCtion:]LIMit:LOWer

CALCulate:[FUNCtion:]LIMit:LOWer:TTLTrg

trigger lines (0 - 7). The default value is NONE.

CALC:LIM:LOW:TTLT 3

(Enables the below limit failure to be captured from the backplane trigger line #3)

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Purpose

Sets the upper limit value

Type

Setting

Command Syntax

CALCulate:[FUNCtion:]LIMit:UPPer <limit>

Command Parameters

<limit> = number | MAXimum | MINimum | LAST

*RST Value

Query Syntax

CALCulate:[FUNCtion:]LIMit:UPPer?

Query Parameters

N/A

Query Response

Number

Description

This command sets the upper reading limit for the current function and range. If a

Examples

Command / Query

Response (Description)

Related Commands

CALCulate:FUNCtion

CALCulate:[FUNCtion:]LIMit:UPPer:TTLTrg

CALCulate:[FUNCtion:]LIMit:UPPer

measurement is above this set limit, the limit high failure bit would be set in the Status Questionable register:

Limit High Failure: 0x1000 Limit High Failure Pulse: 0x4000

CALC:LIM:UPP 8.8

CALC:LIM:UPP LAST

CALCulate:[FUNCtion:]LIMit:LOWer

(Sets the upper limit to 8.8 V in the 10 V range) (Sets the upper limit to the valu e of the last

measurement)

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Purpose

Sets the trigger line

Type

Setting

Command Syntax

CALCulate:[FUNCtion:]LIMit:UPPer:TTLTr g <trigger line>

Command Parameters

<trigger line> = 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | NO NE

*RST Value

NONE

Query Syntax

CALCulate:[FUNCtion:]LIMit:UPPer:TTLTrg?

Query Parameters

N/A

Query Response

0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | NO NE

Description

This command enables the above limit failure to also be read off one of the backplane

Examples

Command / Query

Response (Description)

Related Commands

CALCulate:FUNCtion CALCulate:[FUNCtion:]LIMit:UPPer

CALCulate:[FUNCtion:]LIMit:UPPer:TTLTrg

trigger lines (0 - 7). The default value is NONE.

CALC:LIM:UPP:TTLT 3

(Enables the above limit failure to be captured from the backplane trigger line #3)

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Purpose

Sets the offset value

Type

Setting

Command Syntax

CALCulate:[FUNCtion:]NULL:OFFSet <value>

Command Parameters

<value> = number | MAXimum | MINimum | LAST

*RST Value

Query Syntax

CALCulate:[FUNCtion:]NULL:OFFSet?

Query Parameters

N/A

Query Response

number

Description

Sets the calculate offset value. The default value is zero (0).

Examples

Command / Query

Response (Description)

Related Commands

CALCulate:FUNCtion

CALCulate:[FUNCtion:]NULL:OFFSet

CALC:NULL:OFFS LAST

(Sets the last measurement value as the offset value.)

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Purpose

Returns only the cal culation values

Type

Setting

Command Syntax

CALCulate:NORead <boolean>

Command Parameters

<boolean> = 0 | 1 | OFF | ON

*RST Value

Query Syntax

CALCulate:NORead?

Query Parameters

N/A

Query Response

0 | 1

Description

The Calculate NoRead command sets the instrument such that a read only returns the

Examples

Command / Query

Response (Description)

Related Commands

N/A

CALCulate:NORead

calculation values rather than returning all data. The default setting is OFF (0), which returns all data when a read is made.

CALC:NOR 1

(Sets the instrument to only return the calculate values)

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Purpose

Enables and disables the calculate function.

Type

Setting

Command Syntax

CALCulate:STATe <boolean>

Command Parameters

<boolean> = 0 | 1 | OFF | ON

*RST Value

Query Syntax

CALCulate:STATe?

Query Parameters

N/A

Query Response

0 | 1

Description

This command enables or disables the calculate function.

Examples

Command / Query

Response (Description)

Related Commands

CALCulate:FUNCtion

CALCulate:STATe

CALC:STAT 1

(Enables the calculate function)

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Purpose

Reports the calibration gain value

Type

Query

Command Syntax

N/A

Command Parameters

N/A

*RST Value

N/A

Query Syntax

CALibration:CONVert:GAIN?

Query Parameters

N/A

Query Response

See Table 3-1: Function a nd Range.

Description

Reports the gai n of the current function and range setting o f t he VM2710A. Se e the

Calibration commands should only be executed by qualified

tly can cause the

Examples

Command / Query

Response (Description)

Related Commands

CALibration:CONVert:GAIN:CURRent:AC?

CALibration:CONVert:GAIN:VOLTage[:DC]?

CALibration:CONVert:GAIN?

Scale column in Table 3-1: Function and Range.

personnel. Changing these values incorrec instrument to perform improperly.

CONV:GAIN?

CALibration:CONVert:GAIN:CURRent[:DC]? CALibration:CONVert:GAIN:FRESistance? CALibration:CONVert:GAIN:RESistance? CALibration:CONVert:GAIN:VOLTage:AC?

(Queries and reports the gain for the current function and range setting.)

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Purpose

Reports the calibration gain value

Type

Query

Command Syntax

N/A

Command Parameters

N/A

*RST Value

N/A

Query Syntax

CALibration:CONVert:GAIN:CURRent:AC? <range>

Query Parameters

<range> = 0.01 | 0.1 | 1.0

Query Response

See Table 3-1: Function a nd Range

Description

Reports the gain for a specified range in the ac Current function. See the Scale column

n commands should only be executed by qualified

personnel. Changing these values incorrectly can cause the

Examples

Command / Query

Response (Description)

Related Commands

CALibration:CONVert:GAIN?

CALibration:CONVert:GAIN:VOLTage[:DC]?

CALibration:CONVert:GAIN:CURRent:AC?

in Table 3-1: Functio n and Range.

Calibratio

instrument to perform improperly.

CAL:CONV:GAIN:CURR:AC 1

CALibration:CONVert:GAIN:CURRent[:DC]? CALibration:CONVert:GAIN:FRESistance? CALibration:CONVert:GAIN:RESistance? CALibration:CONVert:GAIN:VOLTage:AC?

(Queries and reports the gain for the 1 A range.)

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Purpose

Reports the calibration gain value

Type

Query

Command Syntax

N/A

Command Parameters

N/A

*RST Value

N/A

Query Syntax

CALibration:CONVert:GAIN:CURRent[:DC]? <range>

Query Parameters

<range> = 0.01 | 0.1 | 1.0

Query Response

See Table 3-1: Function a nd Range

Description

Reports the gain for a specified range in the dc current function. See the Scale column

Calibration commands should only be executed by qualified personnel. Changing these values incorrectly can cause the

Examples

Command / Query

Response (Description)

Related Commands

CALibration:CONVert:GAIN?

CALibration:CONVert:GAIN:VOLTage[:DC]?

CALibration:CONVert:GAIN:CURRent[:DC]?

in Table 3-1: Functio n and Range.

instrument to perform improperly.

CAL:CONV:GAIN:CURR:DC 1

CALibration:CONVert:GAIN:CURRent:AC? CALibration:CONVert:GAIN:FRESistance? CALibration:CONVert:GAIN:RESistance? CALibration:CONVert:GAIN:VOLTage:AC?

(Qureies and reports the gain for the 1 A range.)

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Purpose

Reports the calibration gain value

Type

Query

Command Syntax

N/A

Command Parameters

N/A

*RST Value

N/A

Query Syntax

CALibration:CONVert:GAIN:FRESistance? <range>

Query Parameters

<range> = 20 Ω | 200 Ω | 2 kΩ | 20 kΩ | 200 kΩ | 2 MΩ | 20 MΩ

Query Response

See Table 3-1: Function a nd Range

Description

Reports the gain for a specified range in the 4-wire ohms function. See the Scale

Calibration commands should only be executed by qualified personnel. Changing these values incorrectly can cause the

Examples

Command / Query

Response (Description)

Related Commands

CALibration:CONVert:GAIN?

CALibration:CONVert:GAIN:VOLTage[:DC]?

CALibration:CONVert:GAIN:FRESistance?

column in Table 3-1: Function and Range.

instrument to perform improperly.

CAL:CONV:GAIN:FRES? 20000

CALibration:CONVert:GAIN:CURRent:AC? CALibration:CONVert:GAIN:CURRent[:DC]? CALibration:CONVert:GAIN:RESistance? CALibration:CONVert:GAIN:VOLTage:AC?

(Queries and reports the gain for the 20 kΩ range.)

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Purpose

Reports the calibration gain value

Type

Query

Command Syntax

N/A

Command Parameters

N/A

*RST Value

N/A

Query Syntax

CALibration:CONVert:GAIN:RESistance? <range>

Query Parameters

<range> = 20 Ω | 200 Ω | 2 kΩ | 20 kΩ | 200 kΩ | 2 MΩ | 20 MΩ

Query Response

See Table 3-1: Function a nd Range

Description

Reports the gain for a specified range in the 2-wire ohms function. See the Scale

Calibration commands should only be executed by qualified personnel. Changing these values incorrectly can cause the

Examples

Command / Query

Response (Description)

Related Commands

CALibration:CONVert:GAIN?

CALibration:CONVert:GAIN:VOLTage[:DC]?

CALibration:CONVert:GAIN:RESistance?

column in Table 3-1: Function and Range.

instrument to perform improperly.

CAL:CONV:GAIN:RES? 20000

CALibration:CONVert:GAIN:CURRent:AC? CALibration:CONVert:GAIN:CURRent[:DC]? CALibration:CONVert:GAIN:FRESistance? CALibration:CONVert:GAIN:VOLTage:AC?

(Qureies and reports the gain for the 20 kΩ range.)

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Purpose

Reports the calibration gain value

Type

Query

Command Syntax

N/A

Command Parameters

N/A

*RST Value

N/A

Query Syntax

CALibration:CONVert:GAIN:VOLTage:AC? <range>

Query Parameters

<range> = 0.1 V | 1.0 V | 10.0 V | 100.0 V | 300.0 V

Query Response

See Table 3-1: Function a nd Range

Description

Reports the gain for a specified range in the ac voltage function. See the Scale column

Calibration commands should only be executed by qualified personnel. Changing these values incorrectly can cause the

Examples

Command / Query

Response (Description)

Related Commands

CALibration:CONVert:GAIN?

CALibration:CONVert:GAIN:VOLTage[:DC]?

CALibration:CONVert:GAIN:VOLTage:AC?

in Table 3-1: Functio n and Range.

instrument to perform improperly.

CAL:CONV:GAIN:VOLT:AC? 10

CALibration:CONVert:GAIN:CURRent:AC? CALibration:CONVert:GAIN:CURRent[:DC]? CALibration:CONVert:GAIN:FRESistance? CALibration:CONVert:GAIN:RESistance?

(Queries and reports the gain for the 10 V range.)

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Purpose

Reports the calibration gain value

Type

Query

Command Syntax

N/A

Command Parameters

N/A

*RST Value

N/A

Query Syntax

CALibration:CONVert:GAIN:VOLTage:DC? <range>

Query Parameters

<range> = 0.1 V | 1.0 V | 10.0 V | 100.0 V | 300.0 V

Query Response

See Table 3-1: Function a nd Range

Description

Reports the gain for a specified range in the dc voltage function. See the Scale column

Calibration commands should only be executed by qualified

anging these values incorrectly can cause the

Examples

Command / Query

Response (Description)

Related Commands

CALibration:CONVert:GAIN?

CALibration:CONVert:GAIN:VOLTage:AC?

CALibration:CONVert:GAIN:VOLTage[:DC]?

in Table 3-1: Functio n and Range.

personnel. Ch instrument to perform improperly.

CAL:CONV:GAIN:VOLT:DC? 10

CALibration:CONVert:GAIN:CURRent:AC? CALibration:CONVert:GAIN:CURRent[:DC]? CALibration:CONVert:GAIN:FRESistance? CALibration:CONVert:GAIN:RESistance?

(Queries and reports the gain for the 10 V range)

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Purpose

Reports the calibration offset value

Type

Query

Command Syntax

N/A

Command Parameters

N/A

*RST Value

N/A

Query Syntax

CALibration:CONVert:OFFSet?

Query Parameters

N/A

Query Response

See Table 3-1: Function and Range

Description

Reports the offset of the current function and range setting of the VM2710A. See the

personnel. Changing these values incorrectly can cause the

Examples

Command / Query

Response (Description)

Related Commands

CALibration:CONVert:OFFSet:CURRent:AC?

CALibration:CONVert:OFFSet:VOLTage[:DC]?

CALibration:CONVert:OFFSet?

Offset column in Table 3-1: Function and Range.

Calibration commands should only be executed by qualified

instrument to perform improperly.

CONV:OFFS?

CALibration:CONVert:OFFSet:CURRent[:DC]? CALibration:CONVert:OFFSet:FRESistance? CALibration:CONVert:OFFSet:RESistance? CALibration:CONVert:OFFSet:VOLTage:AC?

(Queires and reports the offset for the current function and range setting.)

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Purpose

Reports the calibration offset value

Type

Query

Command Syntax

N/A

Command Parameters

N/A

*RST Value

N/A

Query Syntax

CALibration:CONVert:OFFSet:CURRent:AC? <range>

Query Parameters

<range> = 0.01 | 0.1 | 1.0

Query Response

See Table 3-1: Function a nd Range

Description

Reports the offset for a specified range in the ac Current function. See the Offset

Calibration commands should only be executed by qualified personnel. Changing these values incorrectly can cause the

Examples

Command / Query

Response (Description)

Related Commands

CALibration:CONVert:OFFSet?

CALibration:CONVert:OFFSet:VOLTage[:DC]?

CALibration:CONVert:OFFSet:CURRent:AC?

column in Table 3-1: Function and Range.

instrument to perform improperly.

CAL:CONV:OFFS:CURR:AC 1

CALibration:CONVert:OFFSet:CURRent[:DC]? CALibration:CONVert:OFFSet:FRESistance? CALibration:CONVert:OFFSet:RESistance? CALibration:CONVert:OFFSet:VOLTage:AC?

(Queires and reports the offset for the 1 A range)

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Purpose

Reports the calibration offset value

Type

Query

Command Syntax

N/A

Command Parameters

N/A

*RST Value

N/A

Query Syntax

CALibration:CONVert:OFFSet:CURRent:DC? <range>

Query Parameters

<range> = 0.01 | 0.1 | 1.0

Query Response

See Table 3-1: Function a nd Range

Description

Reports the offset for a specified range in the dc current function. See the Offset

Calibration commands should only be executed by qualified

orrectly can cause the

Examples

Command / Query

Response (Description)

Related Commands

CALibration:CONVert:OFFSet?

CALibration:CONVert:OFFSet:VOLTage[:DC]?

CALibration:CONVert:OFFSet:CURRent[:DC]?

column in Table 3-1: Function and Range.

personnel. Changing these values inc instrument to perform improperly.

CAL:CONV:OFFS:CURR:DC 1

CALibration:CONVert:OFFSet:CURRent:AC? CALibration:CONVert:OFFSet:FRESistance? CALibration:CONVert:OFFSet:RESistance? CALibration:CONVert:OFFSet:VOLTage:AC?

(Queries and reports the offset for the 1 A range.)

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Purpose

Reports the calibration offset value

Type

Query

Command Syntax

N/A

Command Parameters

N/A

*RST Value

N/A

Query Syntax

CALibration:CONVert:OFFSet:FRESistance? <range>

Query Parameters

<range> = 20 Ω | 200 Ω | 2 kΩ | 20 kΩ | 200 kΩ | 2 MΩ | 20 MΩ

Query Response

See Table 3-1: Function a nd Range

Description

Reports the offset for a specified range in the 4-wire ohms function. See the Offset

Calibration commands should only be executed by qualified personnel. Changing these values incorrectly can cause the

Examples

Command / Query

Response (Description)

Related Commands

CALibration:CONVert:OFFSet?

CALibration:CONVert:OFFSet:VOLTage[:DC]?

CALibration:CONVert:OFFSet:FRESistance?

column in Table 3-1: Function and Range.

instrument to perform improperly.

CAL:CONV:OFFS:FRES? 20000

CALibration:CONVert:OFFSet:CURRent:AC? CALibration:CONVert:OFFSet:CURRent[:DC]? CALibration:CONVert:OFFSet:RESistance? CALibration:CONVert:OFFSet:VOLTage:AC?

(Queries and reports the gain for the 20 kΩ

range.)

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Purpose

Reports the calibration offset value

Type

Query

Command Syntax

N/A

Command Parameters

N/A

*RST Value

N/A

Query Syntax

CALibration:CONVert:OFFSet:RESistance? <range>

Query Parameters

<range> = 20 Ω | 200 Ω | 2 kΩ | 20 kΩ | 200 kΩ | 2 MΩ | 20 MΩ

Query Response

See Table 3-1: Function a nd Range

Description

Reports the offset for a specified range in the 2-wire ohms function. See the Offset

Calibration commands should only be executed by qualified personnel. Changing these values incorrectly can cause the

Examples

Command / Query

Response (Description)

Related Commands

CALibration:CONVert:OFFSet?

CALibration:CONVert:OFFSet:VOLTage[:DC]?

CALibration:CONVert:OFFSet:RESistance?

column in Table 3-1: Function and Range.

instrument to perform improperly.

CAL:CONV:OFFS:RES? 20000

CALibration:CONVert:OFFSet:CURRent:AC? CALibration:CONVert:OFFSet:CURRent[:DC]? CALibration:CONVert:OFFSet:FRESistance? CALibration:CONVert:OFFSet:VOLTage:AC?

(Queries and reports the gain for the 20 kΩ range)

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Purpose

Reports the calibration offset value

Type

Query

Command Syntax

N/A

Command Parameters

N/A

*RST Value

N/A

Query Syntax

CALibration:CONVert:OFFSetVOLTage:AC? <range>

Query Parameters

<range> = 0.1 V | 1.0 V | 10.0 V | 100.0 V | 300.0 V

Query Response

See Table 3-1: Function a nd Range

Description

Reports the offset for a specified range in the ac voltage function. See the Offset

Calibration commands should only be executed by qualified personnel. Changing these values incorrectly can cause the

Examples

Command / Query

Response (Description)

Related Commands

CALibration:CONVert:OFFSet?

CALibration:CONVert:OFFSet:VOLTage[:DC]?

CALibration:CONVert:OFFSet:VOLTage:AC?

column in Table 3-1: Function and Range.

instrument to perform improperly.

CAL:CONV:OFFS:VOLT:AC? 10

CALibration:CONVert:OFFSet:CURRent:AC? CALibration:CONVert:OFFSet:CURRent[:DC]? CALibration:CONVert:OFFSet:FRESistance? CALibration:CONVert:OFFSet:RESistance?

(Queries and reports the gain for the 10 V range.)

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Purpose

Reports the calibration o ffset value

Type

Query

Command Syntax

N/A

Command Parameters

N/A

*RST Value

N/A

Query Syntax

CALibration:CONVert:OFFSetVOLTage:DC? <range>

Query Parameters

<range> = 0.1 V | 1.0 V | 10.0 V | 100.0 V | 300.0 V

Query Response

See Table 3-1: Function a nd Range

Description

Reports the offset for a specified range in the dc voltage function. See the Offset

mands should only be executed by qualified

personnel. Changing these values incorrectly can cause the

Examples

Command / Query

Response (Description)

Related Commands

CALibration:CONVert:OFFSet?

CALibration:CONVert:OFFSet:VOLTage:AC?

CALibration:CONVert:OFFSet:VOLTage[:DC]?

column in Table 3-1: Function and Range.

Calibration com

instrument to perform improperly.

CAL:CONV:OFFS:VOLT:DC? 10

CALibration:CONVert:OFFSet:CURRent:AC? CALibration:CONVert:OFFSet:CURRent[:DC]? CALibration:CONVert:OFFSet:FRESistance? CALibration:CONVert:OFFSet:RESistance?

(Queries and reports the gain for the 10 V range.)

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Purpose

Sets calibration values to defaults

Type

Event

Command Syntax

CALibration:DEFault

Command Parameters

N/A

*RST Value

N/A

Query Syntax

N/A

Query Parameters

N/A

Query Response

N/A

Description

The Calibration Default command sets all the calibration gain and offset values to their

Calibration commands should only be executed by qualified

can cause the

Examples

Command / Query

Response (Description)

Related Commands

N/A

CALibration:DEFault

respective default values.

personnel. Changing these values incorrectly instrument to perform improperly.

CAL:DEF

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Purpose

Selects the reference line frequency used by the A/D converter

Type

Setting

Command Syntax

CALibration:LFRequency <line frequency>

Command Parameters

<frequency> = 50 | 60 | 400 | MIN | MAX

*RST Value

N/A

Query Syntax

CALibration:LFRequency? <MIN | MAX>

Query Parameters

MIN = 50, MAX = 60

Query Response

50 | 60

Description

The Calibration Line Frequency command selects the line frequency reference used by

Calibration commands should only be executed by qualified

Examples

Command / Query

Response (Description)

Related Commands

[SENSe:]RESistance:APERture [SENSe:]VOLTage:APERture

CALibration:LFRequency

the A/D converter. The command parameters are as follows:

50 Selects 50 Hz line frequency reference 60 Selects 6 0 Hz line frequency reference 400 Actually uses 50 Hz reference; however, since 50 Hz is a sub-harmonic of

400 Hz, it provides normal mode rejection of power line related noise.

MINimum Selects 50 Hz line frequency reference MAXimum Selects 60 Hz line frequency reference

This command set can be overridden by a 50 Hz or 60 Hz aperture time set; the last command executed has priority.

The *RST command has no affect on this setting since it is stored in non-volatile memory.

The query will report the current frequency setting of 50 Hz or 60 Hz; or, if MINimum or MAXimum is specified, it will report the values available: 50 Hz or 60 Hz, respectively.

personnel. Changing these values incorrectly can cause the instrument to perform improperly.

CAL:LFR 50

CAL:LFR? MAX

86 VM2710A Command Dictionary

(Sets the line frequency reference to 50 Hz.) 60 (Reports the maximum line frequency

available is 60 Hz.)

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Purpose

Reports the number of times the multimeter has been calibrated

Type

Query

Command Syntax

N/A

Command Parameters

N/A

*RST Value

N/A

Query Syntax

CALibration:NUMBer?

Query Parameters

N/A

Query Response

Decimal number 0 to 32,767

Description

The Calibration Number query reports the number of times the multimeter has been

Calibration commands should only be executed by qualified personnel. Changing these values incorrectly can cause the

Examples

Command / Query

Response (Description)

Related Commands

N/A

CALibration:NUMBer?

calibrated in a decimal value. The number is sent to the output buffer. The calibration number is stored in non-volatile memory and is not affected by a reset command.

instrument to perform improperly.

CAL:NUMB?

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Purpose

Restores calibration DAC values from non-volatile memory

Type

Event

Command Syntax

CALibration:RESet

Command Parameters

N/A

*RST Value

N/A

Query Syntax

N/A

Query Parameters

N/A

Query Response

N/A

Description

This command will load the Calibration DACs from the calibration constants stored in

Calibration commands should only be executed by qualified personnel. Changing these values incorrectly can cause the

Examples

Command / Query

Response (Description)

Related Commands

N/A

CALibration:RESet

non-volatile memory. This allows the user to modify Calibration DAC values with the ability to restore the original values

instrument to perform improperly.

CAL:RES

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Purpose

Sets the code required to disable calibration security

Type

Setting

Command Syntax

CALibration:SECure:CODE #

Command Parameters

# = the code string can be from 1 to 12 ASCII characters in length entered in IEEE 488.2 definite or indefinite length arbitrary block format

*RST Value

N/A

Query Syntax

CALibration:SECure:CODE?

Query Parameters

N/A

Query Response

Description

Calibration security must first be disabled before the code can be changed. Before

personnel. Changing these values incorrectly can cause the

Examples

Command / Query

Response (Description)

Related Commands

CALibration:SECure[:STATe]

CALibration:SECure:CODE

shipping the instrument, the factory sets the code to VM2710.

Calibration commands should only be executed by qualified

instrument to perform improperly.

CAL:SEC:CODE #16VM2710

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Purpose

Enable or disable calibration security

Type

Setting

Command Syntax

CALibration:SECure[:STATe] <mode>, #

Command Parameters

<mode> = boolean - 0 | 1 | OFF | ON # = The code must be present to disable the security or it will generate an error.

*RST Value

Query Syntax

CALibration:SECure[:STATe]?

Query Parameters

N/A

Query Response

0 | 1

Description

The module powers up with the secure state enabled. While security is on, no stores to

Calibration commands should only be executed by qualified personnel. Changing these values incorrectly can cause the

Examples

Command / Query

Response (Description)

Related Commands

CALibration:SECure:CODE

CALibration:SECure[:STATe]

non-volatile memory are allowed. This command turns the state on or off. In order to disable the security state, the current security code must be supplied. To turn on security, code does not need to be supplied. If it is supplied the code is checked. The security code must be supplied in IEEE 488.2 definite or indefinite length arbitrary block format.

instrument to perform improperly.

CAL:SEC OFF #16VM2710

CAL:SEC:STAT 1

CAL:SEC?

(Disable security mode) (Turns calibration security back on again.) (Indicates the calibration security is enabled so

that no new information can be stored in nonvolatile memory.)

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Purpose

Saves the current calibration constants into non-volatile memory

Type

Event

Command Syntax

CALibration:STORe

Command Parameters

N/A

*RST Value

N/A

Query Syntax

N/A

Query Parameters

N/A

Query Response

N/A

Description

The Calibration Secure State must be disabled before initiating a Calibration Store

hould only be executed by qualified

personnel. Changing these values incorrectly can cause the

Examples

Command / Query

Response (Description)

Related Commands

CALibration:SECure[:STATe]

CALibration:STORe

command.

Calibration commands s

instrument to perform improperly.

CAL:STOR

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Purpose

Sets the range for the zero measurement.

Type

Setting

Command Syntax

CALibration:ZERO <range>

Command Parameters

<range> = expected dc range: 0.1 | 1.0 | 10.0 | 100.0 | 300.0

*RST Value

ALL ranges

Query Syntax

CALibration:ZERO? <range>

Query Parameters

<range> = expected dc range: 0.1 | 1.0 | 10.0 | 100.0 | 300.0

Query Response

number

Description

Sets the range for the zero measurement in the dc voltage function. If no value is

Calibration commands should only be executed by qualified

cause the

Examples

Command / Query

Response (Description)

Related Commands

N/A

CALibration:ZERO

entered, then the VM2710A will take a zero measurement for each of the voltage ranges thus taking more time.

Note that this command can only be issued for DC voltages and can only be run when the aperture is set to at least 1 PLC. Also note that, if the resolution is set to 1x10 more by the CONF:VOLT, the CAL:ZERO command will not work unless the user manual adjusts the aperture to 1 PLC.

-6

V or

personnel. Changing these values incorrectly can instrument to perform improperly.

CAL:ZERO 0.1

CAL:ZERO 0.1?

(Sets the VM2710A to take one zero measurement in the 0.1 range.)

(Zero measurement taken in 0.1 range.)

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Purpose

Updates the current zero measurements

Type

Event

Command Syntax

CALibration:ZERO:UPDate

Command Parameters

N/A

*RST Value

N/A

Query Syntax

N/A

Query Parameters

N/A

Query Response

N/A

Description

Updates the current zero measurements to later be stored using the Calibration Store

Calibration commands should only be executed by qualified

Examples

Command / Query

Response (Description)

Related Commands

CALibration:STORe

CALibration:ZERO:UPDate

command.

personnel. Changing these values incorrectly can cause the instrument to perform improperly.

CAL:ZERO:UPD

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Purpose

Reports the most recent configuration set

Type

Query

Command Syntax

N/A

Command Parameters

N/A

*RST Value

N/A

Query Syntax

CONFigure?

Query Parameters

N/A

Query Response

Current function, range, and resolution parameters

Description

The CONfigure? query reports the multimeter's current configuration set be the most

Examples

Command / Query

Response (Description)

Related Commands

CONFigure:CURRent:AC

MEASure:RESistance

CONFigure?

recent Configure or Measure command and returns these values in quotation marks.

CONF:VOLT:AC 100,0.001

CONF?

CONFigure:CURRent[:DC] CONFigure:VOLTage:AC CONFigure:VOLTage[:DC] CONFigure:FRESistance CONFigure:RESistance MEASure:CURRent:AC MEASure:CURRent[:DC] MEASure:VOLTage:AC MEASure:VOLTage[:DC] MEASure:FRESistance

“VOLT:AC 1.000000E+002,1.000000E-003”

(Indicates that the device is con figured for volts ac in the 100 V range at a resolution of 1 mV.)

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Purpose

Selects the ac current function

Type

Setting

Command Syntax

CONFigure:CURRent:AC [<expected value>[, <resolution>]]

Command Parameters

<expected value> = 0.01 | 0.1 | 1 | AUTO | DEF | MIN | MAX

Refer to the AC Current Specifications

*RST Value

DEFault - Autoranging / 1e-5

Query Syntax

N/A

Query Parameters

N/A

Query Response

N/A

Description

This command selects the ac Current function. It also allows you to set parameters for

[no specified value] 1e5 (Dependant on Range setting)

Examples

Command / Query

Response (Description)

Related Commands

FETCh?

CONFigure?

CONFigure:CURRent:AC

<resolution> = 1e-7 | 1e-6 | 1e-5 | 1e-4 | DEF | MIN | MAX

an expected current and resolution. When a specific current value is specified, the multimeter will automatically selects the correct range. If autoranging is selected, the only valid parameters for resolution are MINimum or MAXimum. To input a resolution parameter, a current parameter must be specified first. Valid parameter combinations are: no parameter, a current parameter only, or both a current parameter and a resolution parameter. Refer to the AC Current Specificaitons in allowed range and resolution values. The input parameters are as follows:

0.01 | 0.1 | 1 Specific expected current value in amps AUTOmatic Autoranging DEFault Autoranging MINimum 0.01 (0.01 A or 10 mA) MAXimum 1 ( 1A) [no value specified] Autoranging

Resolution

1e-7 | 1e-6 | 1e-5 | 1e-4 A value specified for resolution in amps

DEFault 1e-5 MINimum 1e-4 (Dependant on Range setting) MAXimum 1e-7 (Dependant on Range setting)

Section 1 for

CONF:CURR:AC MAX,MAX

CONF:CURR:AC 0.1,1E-6

INITiate READ?

VM2710A Command Dictionary 95

(Selects 1 A and 10 µA resolution.) (Selects the 0.1 A range ata 1 µA resolution.)

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Purpose

Selects the dc current function

Type

Setting

Command Syntax

CONFigure:CURRent[:DC] [<expected value>[<resolution>]]

Command Parameters

<expected value> = 0.01 | 0.1 | 1 | AUTO | DEF | MIN | MAX

Refer to the DC Current Specifications

*RST Value

DEFault - Autoranging / 1e-5

Query Syntax

N/A

Query Parameters

N/A

Query Response

N/A

Description

This command selects the dc current function. It also allows you to set parameters for

[no specified value] 1e5 (Dependant on Range setting)

Examples

Command / Query

Response (Description)

Related Commands

FETCh?

CONFigure?

CONFigure:CURRent[:DC]

<resolution> = 1e-7 | 1e-6 | 1e-5 | 1e-4 | DEF | MIN | MAX

an expected current and resolution. When a specific current value is specified, the multimeter will automatically selects the correct range. If autoranging is selected, the only valid parameters for resolution are MINimum or MAXimum. To input a resolution parameter, a current parameter must be specified first. Valid parameter combinations are: no parameter, a current parameter only, or both a current parameter and a resolution parameter. Refer to the DC Current Specifications in allowed range and resolution values. The input parameters are as follows:

0.01 | 0.1 | 1 Specific expected current value in amps AUTOmatic Autoranging DEFault Autoranging MINimum 0.01 (0.01 A or 10 mA) MAXimum 1 (1 A) [no value specified] Autoranging

Resolution

1e-7 | 1e-6 | 1e-5 | 1e-4 A value specified for resolution in amps

DEFault 1e-5 MINimum 1e-4 (Dependant on Range setting) MAXimum 1e-7 (Dependant on Range setting)

Section 1 for

CONF:CUR MAX,MAX

CONF:CURR 0.1,1E-6

INITiate READ?

96 VM2710A Command Dictionary

(Selects 1 A at 10 µA resolution.) (Selects the 0.1 A range and 1 µA resolution.)

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Purpose

Selects 4-wire ohms function

Type

Setting

Command Syntax

CONFigure:FRESistance [<expected value>[, <resolution>]]

Command Parameters

<expected value> = 0 Ω through 20 MΩ | AUTO | DEF | MIN | MAX

Refer to the Resistance Specifications

*RST Value

DEFault - Autoranging / 1 Ω

Query Syntax

N/A

Query Parameters

N/A

Query Response

N/A

Description

This command selects the 4-wire ohms function. It also allows the user to specify an

[no specified value] 1 Ω (Dependant on Range)

Examples

Command / Query

Response (Description)

Related Commands

FETCh?

CONFigure?

CONFigure:FRESistance

<resolution> = 1e-4 | 1e-3 | 1e-2 | 1e-1 | 1 | 10 | 100 | 1e3 | DEF | MIN | MAX

expected value and desired resolution. When a specific resistance value is specified, the multimeter will automatically selects the correct range. If autoranging is selected, the only valid parameters for resolution are MINimum or MAXimum. To input a resolution parameter, a resistance parameter must be specified first. Valid parameter combinations are: no parameter, a resistance parameter only, or both a resistance parameter and a resolution parameter. Refer to the Resistance Specifications in Section 1 for allowed range and resolution values. The input parameters are as follows:

<expected value> 0 Ω - 20 MΩ Specific expected resistance value in ohms AUTOmatic Autoranging DEFault Autoranging MINimum 0 Ω MAXimum 20 MΩ [no value specified] Autoranging

Resolution 1e-4 | 1e-3 | 1e-2 | 1e-1 | 1 | 10 | 100 | 1000 A value specified for resolution in ohms DEFault 1 Ω MINimum (Dependant on Range) MAXimum (Dependant on Range)

CONF:FRES MAX,MAX

CONF:FRES 10,0.001

INITiate READ?

VM2710A Command Dictionary 97

Selects 20 MΩ at 100 Ω resolution Selects the 20 Ω range at 0.001 Ω resolution

Page 98

VTI Instruments Corporation

Purpose

Selects the 2-wire ohms function

Type

Setting

Command Syntax

CONFigure:RESistance [<expected value>[, <resolution>]]

Command Parameters

<expected value> = 0 Ω through 20 MΩ | AUTO | DEF | MIN | MAX

Refer to the Resistance Specifications

*RST Value

DEFault - Autoranging / 1 Ω

Query Syntax

N/A

Query Parameters

N/A

Query Response

N/A

Description

This command selects the 2-wire ohms function. It also allows the user to specify an

[no specified value] 1 Ω (Dependant on Range)

Examples

Command / Query

Response (Description)

Related Commands

FETCh?

CONFigure?

CONFigure:RESistance

<resolution> = 1e-4 | 1e-3 | 1e-2 | 1e-1 | 1 | 10 | 100 | 1000 | DEF | MIN | MAX

<expected value> 0 Ω - 20 MΩ S pecific expected resistance value in ohms AUTOmatic Autoranging DEFault Autoranging MINimum 0 Ω MAXimum 20 MΩ [no value specified] Autoranging

Resolution 1e-4 | 1e-3 | 1e-2 | 1e-1 | 1 | 10 | 100 | 1000 A value specified for resolution in ohms DEFault 1 Ω MINimum (Dependant on Range) MAXimum (Dependant on Range)

CONF:RES:MAX,MAX

CONF:RES 10,0.001

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98 VM2710A Command Dictionary

(Selects 20 MΩ at 100 Ω resolution.) (Selects the 20 Ω range at 0.001 Ω resolution.)

Page 99

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Purpose

Selects the ac-coupled rms voltage function

Type

Setting

Command Syntax

CONFigure:VOLTage:AC [<expected value>[, <resolution>]]

Command Parameters

<expected value> = 0 V through ±300 V | AUTO | DEF | MIN | MAX

Refer to the AC Voltage Specifications

*RST Value

DEFault - Autoranging / 1e-3

Query Syntax

N/A

Query Parameters

N/A

Query Response

N/A

Description

This command selects the ac-coupled rms voltage function. It also allows you to set

[no specified value] 1e-3 (Dependant on Range)

Examples

Command / Query

Response (Description)

Related Commands

FETCh?

CONF?

CONFigure:VOLTage:AC

<resolution> = 1e-6 | 1e-5 | 1e-4 | 1e-3 | 1e-2 | DEF | MIN | MAX

parameters for an expected voltage and resolution. When a specific voltage value is specified, the multimeter will automatically selects the correct range. If autoranging is selected, the only valid parameters for resolution are MINimum or MAXimum. To input a resolution parameter, a voltage parameter must be specified first. Valid parameter combinations are: no parameter, a voltage parameter only, or both a voltage parameter and a resolution parameter. Refer to the AC Voltage Specifications in Section 1 for allowed range and resolution values. The input parameters are as follows:

<expected value> 0 V - ±300 V Specific expected voltage value in volts AUTOmatic Autoranging DEFault Autoranging MINimum 0 V MAXimum ±300 V [no value specified] Autoranging

Resolution 1e-6 | 1e-5 | 1e-4 | 1e-3 | 1e-2 A value specified for resolution in volts DEFault 1e-3 MINimum (Dependant on Range) MAXimum (Dependant on Range)

CONF:VOLT:AC MAX,MAX

CONF:VOLT:AC 12,1E-2

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VM2710A Command Dictionary 99

(Selects ±300 V at 1 mV resolution.) (Selects the 100 V range at 10 mV resolution.)

Page 100

VTI Instruments Corporation

Purpose

Selects the dc voltage function

Type

Setting

Command Syntax

CONFigure:VOLTage[:DC] [<expected value>[<resolution>]]

Command Parameters

<expected value> = 0 V through ±300 V | AUTO | DEF | MIN | MAX

Refer to the DC Voltage Specifications for more details

*RST Value

DEFault - Autoranging / 1e-3

Query Syntax

N/A

Query Parameters

N/A

Query Response

N/A

Description

This command selects the dc voltage function. It also allows you to set parameters for

[no specified value] 1e-3 (Dependant on range)

Examples

Command / Query

Response (Description)

Related Commands

FETCh?

CONF?

CONFigure:VOLTage[:DC]

<resolution> = 1e-6 | 1e-5 | 1e-4 | 1e-3 | 1e-2 | DEF | MI N | MAX

an expected voltage and resolution. When a specific voltage value is specified, the multimeter will automatically selects the correct range. If autoranging is selected, the only valid parameters for resolution are MINimum or MAXimum. To input a resolution parameter, a voltage parameter must be specified first. Valid parameter combinations are: no parameter, a voltage parameter only, or both a voltage parameter and a resolution parameter. Refer to the DC Voltage Specifications in allowed range a nd resolution value s. The input parameters are as follows:

<expected value> 0 V - ±300 V Specific expected voltage value in volts AUTOmatic Autoranging DEFault Autoranging MINimum 0 V MAXimum ±300 V [no value specified] Autoranging

Resolution 1e-6 | 1e-5 | 1e-4 | 1e-3 | 1e-2 A value specified for resolutio n in volts DEFault 1e-3 MINimum (Dependant on range) MAXimum (Dependant on range)

Section 1 for

CONF:VOLT:AC MAX,MAX

CONF:VOLT:AC 12,1E-2

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100 VM2710A Command Dictionary

(Selects ±300 V at 1 mV resolution.) (Selects 100 V range at 10 mV resolution.)