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Strany 1 - *E1326-90009*

Agilent E1326B/E1411B 5 1/2 Digit Multimeter User’s Manual E1326-90009 Printed in USA July 2004 E0704 *E132

Strany 2 - Contents

SA DECLARATION OF CONFORMITY According to ISO/IEC Guide 22 and CEN/CENELEC EN 45014 Revision: A.03 Issue Date: 09/05/00 Manufacturer’s Name:

Strany 3

Enabling OffsetCompensationThe MEASure and CONFigure commands turn offset compensation off.The command used to turn offset compensation on is:RESistan

Strany 4

Figure 4-1. The Multimeter Trigger System102 Understanding the HP E1326B/E1411B Multimeter Chapter 4

Strany 5

The Trigger Source The trigger source parameter specifies the signal which triggers themultimeter. The trigger source is set with the following comma

Strany 6

The Trigger Count The function of the trigger count parameter depends on whether thestand-alone multimeter or scanning multimeter is used.Stand-alone

Strany 7

Example 1: Setting theTrigger Count(stand-alonemultimeter)In this example, one DC voltage measurement is taken each time an externaltrigger occurs. A

Strany 8

The Trigger Delay The trigger delay parameter allows you to specify the period between thetrigger signal and the measurement. For the stand-alone mul

Strany 9 - Safety Symbols

The following program segment shows the context in whichTRIGger:DELay is used.Example: Setting aTrigger Delay 10 !Configure the scanning multimeter fo

Strany 10 - DECLARATION OF CONFORMITY

The Sample Count The sample count specifies the number of measurements made for eachtrigger signal received. For the stand-alone multimeter, it is th

Strany 11

The Sample Period Sample period is the time between measurements in a multiple-readingburst, or the time between channels when scanning a FET multiple

Strany 12 - Multimeter

Table 4-6. Aperture Times and Minimum Sample PeriodAperture Time Minimum Sample Rate(SAMPle:TIMer)Maximum Reading Rate(Readings/second)10 µs76 µs13,15

Strany 13 - Electrical

SA DECLARATION OF CONFORMITY According to ISO/IEC Guide 22 and CEN/CENELEC EN 45014 Revision: A.03 Issue Date: 09/05/00 Manufacturer’s Name: A

Strany 14 - Physical

TheWait-For-TriggerStateFor the multimeter to respond to a trigger signal, the multimeter must beplaced in the wait-for-trigger state. This is done w

Strany 15 - Introduction to Operation

Using a SingleTriggerThe multimeter can be internally triggered with a single trigger signal. Thissignal is issued with the TRIGger[:IMMediate] comma

Strany 16 - Resetting the

Example: Aborting aMeasurement (Trigger Source = BUS)After the multimeter is configured it is placed in the wait-for-trigger state.ABORt returns the m

Strany 17

Saving Multimeter ConfigurationsTo minimize repeated programming, up to 10 stand-alone multimeterconfigurations can be saved in mainframe/command modu

Strany 18

Example: Saving andRecalling aConfigurationThis program saves a configuration in register 0. The multimeter is thenreset in order to change the curre

Strany 19 - Measurement

Notes116 Understanding the HP E1326B/E1411B Multimeter Chapter 4

Strany 20

Chapter 5HP E1326B/E1411B Multimeter CommandReferenceUsing This ChapterThis chapter describes the Standard Commands for ProgrammableInstruments (SCPI

Strany 21 - Address Switch

CALibration:ZERO:AUTO?Colons separate the root command from the second level command(CALibration:ZERO) and the second level from the third level(ZERO:

Strany 22 - Forming a Scanning

Parameters Parameter Types. The following table contains explanations and examplesof parameter types you might see later in this chapter.Parameter Ty

Strany 23 - VXIbus Interrupt

Table 5-1. Voltage and Ohms Ranges vs. Resolution, Aperture, and Integration TimeAperture Time Integration Time (PLCs) 10 µs*0.0005100 µs0.0052.5 ms0.

Strany 24 - HP E1326B Adapter

Chapter 1Getting Started with the HP E1326B/E1411BMultimeterAbout This ChapterThis chapter introduces you the B-size HP E1326B and C-size HP E1411B51

Strany 25 - Mainframe

SCPI Command ReferenceThis section describes the Standard Commands for ProgrammableInstruments (SCPI) for the HP E1326B and HP E1411B 51⁄2-DigitMultim

Strany 26 - Reference Frequency

ABORtThe ABORt command subsystem removes the multimeter from the wait-for-triggerstate and places it in the idle state. ABORt can only be used with t

Strany 27 - Input Characteristics

CALibrationThe CALibration command subsystem selects the multimeter’s line referencefrequency (CALibration:LFRequency) and enables/disables the autoze

Strany 28

Example Querying the Line Reference FrequencyCAL:LFR 50 !Reference frequency is 50 Hz.CAL:LFR? !Query for reference frequency.enter statement !Enter v

Strany 29 - Multiplexers

Example Querying the Autozero Mode CAL:ZERO:AUTO OFF !Disable autozero.CAL:ZERO:AUTO? !Query multimeter to return autozero mode("0").enter s

Strany 30 - Connections at the

CONFigureThe CONFigure command subsystem configures the multimeter to perform thespecified measurement with the given range and resolution. CONFigure

Strany 31 - Connecting Input Signals

:FRESistanceCONFigure:FRESistance [<range>[,<resolution>]] [,<channel_list>] selects the4-wire ohms function and allows you to spec

Strany 32 - Connections

• Related Commands: FETCh?, INITiate, READ?Example Making 4-Wire Ohms MeasurementsCONF:FRES 1560,MAX,(@100:103) !Function: 4-wire ohms; range selecte

Strany 33 - E1345A/47A/51A/53A

• The channel list is of the form (@ccnn), (@ccnn,ccnn), or (@ccnn:ccnn), wherecc = card number and nn = channel number (105 is channel 05 of card num

Strany 34 - See Chapter 2 of the

<type>discretenumericnumericTC: B, E, J, K, N14, N28, R, S, or TTHER/FTH:2252 | 5000 | 10000RTD/FRTD: 85 | 92noneohmsalpha<channel_list>nu

Strany 35 - E1344A/47A/53A

set the addresses in order to create an instrument. The guide should be yourstarting point toward using the multimeter. The functions and features o

Strany 36 - Carrier Cable Assemblies

<resolution>numericresolution (see Table 5-1) |DEF | MIN | MAXvolts<channel_list>numeric Refer to the multiplexer user’s manual fora list

Strany 37

:VOLTage[:DC]CONFigure:VOLTage[:DC] [<range>[,<resolution>]] [,<channel_list>] selects theDC voltage function and allows you to spe

Strany 38 - Additional Configurations

parameter). This prevents the MIN or MAX resolution from being interpreted as arange setting.• The fastest aperture time available when autoranging i

Strany 39

CONFigure?The CONFigure? command queries the multimeter to return the configuration set bythe most recent CONFigure or MEASure command. It returns a q

Strany 40 - About This Chapter

DIAGnosticThe DIAGnostic command subsystem provides control of the FET multiplexers.Subsystem Syntax DIAGnostic:FETS <mode>:FETS?:FETSDIAGnostic

Strany 41 - Making a Single Measurement

DISPlayThe DISPlay command subsystem monitors the state of the selected multiplexerchannel within the scanning multimeter. This command is useful onl

Strany 42

Example Monitoring a ChannelDISP:MON:CHAN (@101) !Select channel 101 for monitor mode.DISP:MON ON !Enable monitor mode.:MONitor:CHANnel?DISPlay:MONit

Strany 43

:MONitor[:STATe]?DISPlay:MONitor[:STATe]? returns a number to show whether the monitor modeis enabled or disabled: "1" = ON, "0"

Strany 44

FETCh?The FETCh? command retrieves measurements stored in mainframe/command module memory by the most recent INITiate command and places them inthe ou

Strany 45 - Scanning a Channel List

FORMatThe FORMat subsystem sets the format for data transferred from the multimeter tothe computer using the MEASure?, READ?, and FETCh? commands.Subs

Strany 46 - Making Multiple Scans

Table 1-1. HP E1326B/E1411B Operating CharacteristicsDC VoltageRangesResolutionAccuracy (90 days)Max Rdgs/sec0.125V, 1.0V, 8.0V, 64.0V, 300V full scal

Strany 47 - Making Multiple Paced Scans

FORMat?FORMat? returns one of the following to the output buffer:• ASC,+7 seven significant digits• REAL,+32 REAL 32 format• REAL,+64 REAL 64 format1

Strany 48

INITiateThe INITiate command subsystem places the multimeter in the wait-for-trigger state.This command is most commonly used with CONFigure.Subsystem

Strany 49

MEASureThe MEASure command subsystem configures the multimeter to perform thespecified measurement with the given range and resolution. When the mult

Strany 50

:FRESistance?MEASure:FRESistance? [<range>[,<resolution>]] [,<channel_list>] selects the4-wire ohms function and allows you to speci

Strany 51

Example Making 4-Wire Ohms MeasurementsMEAS:FRES? 1560,MAX,(@100:103) !Function: 4-wire ohms;range selected: 1861 Ω;MAX resolution: 125 mΩ;specify sen

Strany 52

• To specify a MIN or MAX resolution while autoranging, you must specifyMEAS:RES? AUTO or MEAS:RES? DEF must be specified (you cannot omit therange pa

Strany 53 - Multiple High-Speed Scans

where “cc” is the multiplexer (card) number.• The channel list is of the form (@ccnn), (@ccnn,ccnn), or (@ccnn:ccnn), wherecc = card number and nn = c

Strany 54

• The MIN and MAX parameters select the minimum or maximum values for rangeand resolution:For range: MIN = 0.0795 V; MAX = 300 V.For resolution: MIN s

Strany 55 - Maximizing Measurement Speed

Comments • The [:DC] parameter is optional. Both of the following command statementsselect the DC voltage function:MEAS:VOLT:DC? or MEAS:VOLT?

Strany 56

MEMoryThe MEMory command subsystem enables you to store multimeter readings inshared memory (an external VME memory card).Subsystem Syntax MEMory:VME:

Strany 57 - Changing the Data Format

Introduction to OperationThis section contains information on checking communication between themultimeter, mainframe, and computer. It includes info

Strany 58 - ENTER when all ENTER

The lowest decimal address available (2097152) if MIN is specified.The highest decimal address available (14680060) if MAX is specified.Example Queryi

Strany 59 - HP 82335 HP-IB Interface Card

Example Querying the VME Memory SizeMEM:VME:SIZE 100000 !Set memory size to 100 kBytes.MEM:VME:SIZE? !Query multimeter to return memory size.enter sta

Strany 60

OUTPutThe OUTPut command subsystem enables you to route the multimeter’s voltmetercomplete signal to the VXIbus TTL trigger lines.Subsystem Syntax OUT

Strany 61

Example Routing Voltmeter Complete to Trigger LineOUTP:TTLT7 ON !Route signal to trigger line 7.:TTLTrgn[:STATe]?OUTPut:TTLTrgn[:STATe]? returns a nu

Strany 62

READ?The READ? command is most commonly used with CONFigure to:Place the multimeter in the wait-for-trigger state (executes the INITiate command).Tran

Strany 63

READ? !Place multimeter in wait-for-trigger state andmake measurements; send readings to outputbuffer; trigger source is IMMediate bydefault.enter st

Strany 64 - MEM:VME:STAT ON), all

SAMPleThe SAMPle command subsystem operates with the TRIGger command subsystem.The SAMPle subsystem:Designates the number of readings made for each tr

Strany 65 - Checking for Errors

READ? !Place multimeter in wait-for-trigger state;make measurement when external trigger isreceived; send readings to output buffer.enter statement !E

Strany 66

READ? !Place multimeter in wait-for-trigger state andmake measurements; send readings to outputbuffer.enter statement !Enter readings into computer.:S

Strany 67

• Related Commands: SAMPle:COUNt, SAMPle:SOURce, SENSe•*RST Condition: SAMPle:TIMer 50E-3 secondsExample Setting the Sample PeriodCONF:VOLT:DC !Func

Strany 68 - Additional Scanning

Table 1-2. HP E1326/E1411 Self-Test CodesSelf-Test Code Description0 Test passed.1 Multimeter does not respond to the self-test.2 Invalid communicatio

Strany 69

[SENSe:]The [SENSe:] command subsystem is most commonly used with CONFigure tochange specific "low-level" measurement parameters. Normally

Strany 70 - Subprogram Kaboom

:RESolution <resolution>:RESolution? [MIN | MAX]Note The root command [SENSe:] is an implied command and can be omitted.FUNCtion[SENSe:]FUNCtion

Strany 71

RESistance:APERture[SENSe:]RESistance:APERture <time> sets the aperture (integration time) inseconds. Values are rounded up to the nearest ape

Strany 72 - Get readings

RESistance:APERture?[SENSe:]RESistance:APERture? [MIN | MAX] returns one of the followingnumbers to the output buffer:The present aperture time in se

Strany 73

RESistance:NPLC?[SENSe:]RESistance:NPLC? [MIN | MAX] returns one of the following numbers tothe output buffer:The present integration time in PLCs if

Strany 74

Example Querying the Offset Compensation ModeRES:OCOM ON !Enable offset compensation.RES:OCOM? !Query multimeter to return offsetcompensation mode.ent

Strany 75

RESistance:RANGe?[SENSe:]RESistance:RANGe? [MIN | MAX] returns one of the following numbersto the output buffer:The present resistance range is selec

Strany 76 - RESistance:OCOMpensated

RESistance:RANGe:AUTO?[SENSe:]RESistance:RANGe:AUTO? returns a number to show whether theautorange mode is enabled or disabled: "1" = ON, &

Strany 77 - How to Make Measurements

Example Changing the ResolutionCONF:FRES 1560,MAX,(@100:103) !Function: 4-wire ohms;range selected: 1861 Ω;MAX resolution: 125 mΩ;specify sense channe

Strany 78 - When Using CONFigure

•MIN selects the minimum range available with the VOLTage:AC:RANGecommand: 0.0875V. MAX selects the maximum range available: 300 V.• You must select

Strany 79 - Data Formats and Destinations

Table 1-3. HP E1326/E1411 Power-on SettingsParameter SettingFUNCtion VOLT:DCVOLTage:RANGe 8VRESistance:RANGe16384ΩVOLTage:RANGe:AUTO ONRESistance:RANG

Strany 80 - Destinations

VOLT:AC:RANG? !Query multimeter to return the presentrange.enter statement !Enter value into computer.VOLTage:APERture[SENSe:]VOLTage:APERture <tim

Strany 81

Example Querying the Aperture TimeVOLT:APER 2.67E-01 !Aperture time is 267 ms.VOLT:APER? !Query multimeter to return aperture time.enter statement !En

Strany 82

VOLT:DC:RANG 0.9 !Range selected 1 V; MAX resolution: 61.035 µV.READ? !Place multimeter in wait-for-trigger state andmake measurements; send readings

Strany 83 - Shared Memory

• The greater the number of PLCs, the greater the normal mode rejection (and thelower the reading rate).• Only the 1 PLC and 16 PLC settings provide n

Strany 84 - Destination

• Related Commands: CONFigure, VOLTage:RANGe•*RST Condition: VOLT:RANG:AUTO ONExample Disabling AutorangingVOLT:RANG:AUTO OFF !Disable autorange.VOL

Strany 85 - Measurement Functions

• The VOLT:RANG command overrides the range setting from a previousCONFigure command on the same function. The multimeter uses the sameaperture time

Strany 86 - Two-Wire vs. Four-Wire

SYSTemThe SYSTem command subsystem returns error numbers and messages in the errorqueue. For the scanning multimeter configuration only, SYSTem can a

Strany 87

• HEWLETT-PACKARD,E1347A,0,A.01.00• HEWLETT-PACKARD,E1460A,0,A.01.00• NONE,NONE,0,0ParametersParameter Name Parameter Type Range of Values Default Uni

Strany 88 - Thermocouple

TRIGgerThe TRIGger command subsystem controls the behavior of the trigger system. Thesubsystem can control:The number of triggers to occur before the

Strany 89 - Function

•CONFigure and MEASure set the trigger count to 1.• *RST Condition: TRIG:COUN 1Examples Setting the Trigger Count (Scanning Multimeter)CONF:VOLT:DC (

Strany 90 - Multimeter Parameters

Clearing the Multimeter When the multimeter is selected from the HP E1301A mainframe menu, themultimeter is cleared by pressing the “Clear Instr” key

Strany 91

:DELayTRIGger:DELay <period> sets the delay period between receipt of the trigger andthe start of the measurement.ParametersParameter Name Para

Strany 92

:DELay:AUTOTRIGger:DELay:AUTO <mode> enables or disables a trigger delay based on thepresent function, range, and integration time. The trigge

Strany 93

[:IMMediate]TRIGger[:IMMediate] causes a trigger to occur immediately provided themultimeter is in the wait-for-trigger state (see the INITiate subsy

Strany 94 - 1.084540E+001

ParametersParameter Name Parameter Type Range of Values Default Units<source>discrete BUS | EXT | HOLD | IMMediate | TTLTrg0 - TTLTrg7noneComme

Strany 95 - Resolution

Example Querying the Trigger SourceTRIG:SOUR EXT !Trigger source is external BNC onmultimeter front panel.TRIG:SOUR? !Query multimeter to return trigg

Strany 96 - Integration Time

IEEE 488.2 Common Command ReferenceThe following table lists the IEEE 488.2 Common (*) Commands that can beexecuted by the HP E1326B and HP E1411B 51

Strany 97 - Querying the Aperture

Command Quick Reference The following tables summarize SCPI commands for the HP E1326B andHP E1411B 51⁄2-Digit Multimeters.Command DescriptionABORt Pl

Strany 98 - Querying the Autozero

Command DescriptionSAMPle :COUNt 1-16777215 | MIN | MAX:COUNt? [MIN | MAX]:SOURce IMM | TIM:SOURce?:TIMer 76 µs-65.534 ms | MIN | MAX:TIMer? [MIN | MA

Strany 99 - Compensation

Appendix A 1326B/E1411B Multimeter Specifications 189 Appendix A E1326B/E1411B Multimeter

Strany 100 - Triggering the Multimeter

DC VoltageAccuracy conditions for table below: Autozero on, one hour warmup. Temperature within ±5°C of calibration temperature (module calibrated at

Strany 101

The error queue can store up to 30 error messages which are retrieved in afirst in, first out (FIFO) manner. When there are no error messages in theq

Strany 102 - Querying the Trigger

Appendix A 1326B/E1411B Multimeter Specifications 191 Accuracy conditions for table below: Autozero on, one hour warmup. Within 1 year and ±5°

Strany 103

192 1326B/E1411B Multimeter Specifications Appendix A Four-Wire Resis

Strany 104

Appendix A 1326B/E1411B Multimeter Specifications 193 Accuracy condition for table below: Autozero on, one-hour warmup. Within 90 days and ±5°

Strany 105

194 1326B/E1411B Multimeter Specifications Appendix A True RMS AC Vol

Strany 106 - Trigger Delay

Appendix A 1326B/E1411B Multimeter Specifications 195 Accuracy conditions for table below: Autozero on, one-hour warmup. Within 90 days and ±5

Strany 107 - Querying the Sample

Timer/Pacer Module Size/Device Type:Timer Range: 76 µsec to 65.5 msec B, register-based (E1326B)Resolution: 2 µs C, register-based (E1411B)Accuracy: 0

Strany 108

Appendix BHP E1326B/E1411B Multimeter ErrorMessagesThe error messages associated with the HP E1326B/HP E1411B multimeterare shown in this appendix.Co

Strany 109

Code Message Cause- 230 Data corrupt or stale Data in mainframe memory is fetched after a command(e.g., MEASure, READ?) has returned data to theoutpu

Strany 110 - Wait-For-Trigger

Appendix CHP E1326B/E1411B MultimeterRegister-Based ProgrammingAbout This AppendixThe HP E1326B and HP E1411B 51⁄2-Digit Multimeters are register-bas

Strany 111 - Single Trigger

The Base Address When you are reading or writing to a multimeter register, a hexadecimal ordecimal register address is specified. This address consis

Strany 112

ContentsHP E1326B/E1411B 5 1/2 Digit Multimeter User’s ManualWarranty . . . . . . . . . . . . . . . . . . . . . . . . . .

Strany 113 - Configuration

Chapter 2Configuring the HP E1326B/E1411BMultimeterAbout This ChapterThis chapter contains information on connecting input signals to themultimeter u

Strany 114 - Recalling a

Finding the BaseAddress in anEmbedded ControllerWhen using an embedded controller such as the HP RADI-EPC7 with theStandard Instrument Command Library

Strany 115

Register Offset The register offset is the register’s location in the block of 64 address bytes.For example, the multimeter’s Command Register has an

Strany 116 - Reference

Register DescriptionsThere are three WRITE and five READ registers on the multimeter. Thissection contains a description and a bit map of each regist

Strany 117 - Commands

The Command andParameter RegistersCommands and their parameters are opcodes written to the Command andParameter Registers.Address 15 - 8 76543210base

Strany 118

The READ Registers The following READ registers are located on the multimeter.– ID Register (base + 0016)– Device Type Register (base + 0216)– Status

Strany 119

The Device TypeRegisterThe Device Type Register contains a model code which identifies thedevice.Address 1514131211109876543210base + 0216Model CodeMo

Strany 120 - SCPI Command Reference

Passed. A zero (0) in bit 2 indicates the multimeter is executing a reset, oris executing or failed its self-test. A one (1) indicates the reset is

Strany 121 - Comments •

The Data Buffer Measurements are returned to the Data Buffer. The buffer is afirst-in-first-out (FIFO) buffer capable of storing 256 four-byte readin

Strany 122 - CALibration

Converting Four-Byteand Two-Byte ReadingsFour-byte readings and two-byte readings are converted to voltages andresistances as follows.Four-Byte Readin

Strany 123 - :ZERO:AUTO?

Program Timing and ExecutionWhen programming the multimeter at the register level, the structure of theprogram will generally be as follows:– resettin

Strany 124 - Querying the Autozero Mode

Setting the LogicalAddress SwitchFigure 2-1 shows the location and settings of the multimeter’s logicaladdress switch.The switch has a factory setting

Strany 125 - CONFigure

• Bit 2 of the Status Register is monitored to determine when the resetis finished.• Writing a "0" to bit 1 re-enables SYSFAIL. Configuring

Strany 126 - :FRESistance

Figure C-4. Configuring the Multimeter212 HP E1326B/E1411B Multimeter Register-Based Programming Appendix C

Strany 127 - :RESistance

RetrievingMeasurementsFigure C-5 shows the conditions monitored to determine when measurementsare available in the data buffer.Comments• The registers

Strany 128 - :TEMPerature

Checking for Errors Error conditions are monitored and error codes are returned as indicated infigure C-6.Comments• The registers used are:– Status Re

Strany 129 - :VOLTage:AC

QueryingParametersMultimeter parameters are queried as shown in Figure C-7.Comments• The registers used are:– Status Register (base + 0416)– Command R

Strany 130

Using a Multiplexerwith the MultimeterFigure C-8 shows an example timing sequence between closing a multiplexerchannel and triggering the multimeter.C

Strany 131 - :VOLTage[:DC]

Register TriggeringThis section reviews the multimeter’s trigger system from the register-basedstandpoint. The section shows the triggering models us

Strany 132

MultimeterTriggering ModelThe following models suggest one method of triggering the multimeterwhen it is used to make stand-alone or scanning measurem

Strany 133 - CONFigure?

Control RegisterSamplingThe following model shows how to make a measurement by writing to theControl Register. This method of sampling is available w

Strany 134 - DIAGnostic

Programming ExamplesThe examples in this section demonstrate how to program the multimeter atthe register level. The programs follow the execution an

Strany 135 - :MONitor:CHANnel

Forming a ScanningMultimeterIf multiplexers are used to form a scanning multimeter, they must beassigned successive logical addresses beginning with t

Strany 136 - :MONitor[:STATe]

Resetting theMultimeterThe following program resets the multimeter.HP BASIC/WS 10 !Map the A16 address space in the HP V/382 and store the multimeter

Strany 137 - :MONitor[:STATe]?

C Version/* E1411_RS.CPP - This program resets the multimeter. */#include <sicl.h>#include <stdio.h>#include <stdlib.h>#include <

Strany 138 - Subsystem Syntax FETCh?

Reading the IDRegisterAs mentioned previously, the ID Register indicates the classification,addressing mode, and manufacturer of the device. This prog

Strany 139 - Comments

Reading the DeviceType RegisterThe Device Type Register contains the model code of the device. The HP E1326B model code is FF4016 and the HP E1411B m

Strany 140 - REAL,+64 REAL 64 format

C Version/* E1411_ID.CPP - This program reads the multimeter’s ID and Device Type *//* registers. */#include <sicl.h>#include <stdio.h>#in

Strany 141 - INITiate

Reading the QueryResponse RegisterThe following program sets the multimeter function to (2-wire) OHMS, andthen queries the function and reads it from

Strany 142 - Subsystem Syntax MEASure

380 !This subprogram sets and queries the multimeter function.390 SUB Func_qry400 COM Base_addr410 WRITEIO -16,Base_addr+8;4420 CALL Wait_not_bsy430

Strany 143 - :FRESistance?

C Version /* E1411_QY.CPP - This program sets the multimeter function to (4-wire) *//* OHMS and then queries the function setting and reads it from

Strany 144 - :RESistance?

/* this function sets the multimeter function to ohms */unsigned short query; /* variable for data from query response reg *//* write ’measurement fu

Strany 145 - :TEMPerature?

Reading an ErrorCodeThis program generates an error and then reads the error code from theQuery Response Register.HP BASIC/WS Version 10 !Map the A16

Strany 146 - :VOLTage:AC?

VXIbus InterruptLinesThe multimeter sends interrupts to, and receives acknowledgements fromthe slot 0 module via the VXIbus backplane interrupt lines.

Strany 147 - :VOLTage[:DC]?

380 !This subprogram calls Read_status to check status bit 1 to determine390 !when an error code is in the Query Response register.400 SUB Qry_ready41

Strany 148

C Version /* E1411_EC.CPP - This program generates an error and then reads the *//* error code from the Query Response Register. */#include <si

Strany 149 - :VME:ADDRess?

/* this function specifies a parameter opcode of 7 for the function *//* parameter. This is a parameter out of range. *//* write ’measurement function

Strany 150 - :VME:SIZE?

Stand-AloneMultimeterMeasurementsThe following program makes measurements using the stand-alonemultimeter. The configuration shown makes five bursts

Strany 151 - :VME:STATe?

360 !Dimension a computer variable to store the measurements.370 !(size = number of bursts * number of readings per burst.)380 REAL Readings(1:25) 390

Strany 152 - :TTLTrgn[:STATe]

770 !This subprogram calls Read_status to check the validity of status bit 7780 !(DONE). This ensures the validity of status bits 6,5,4, and 1.790 SUB

Strany 153 - :TTLTrgn[:STATe]?

1190 !This subprogram writes commands and parameters to the Command1200 !and Parameter registers. It calls Wait_not_bsy prior to writing the next1210

Strany 154 - Subsystem Syntax READ?

1620 Header=BIT(Lower_word,0)*128+Rng1630 Exp=BINAND(Header,7)1640 ELSE1650 Upper_word=READIO(-16,Base_addr+12)1660 CALL Data_ready1670 Lower_word=REA

Strany 155

C Version /* E1411_M.CPP - This program takes measurements on the front *//* terminals of the E1411B multimeter. */#include <sicl.h>#incl

Strany 156 - Subsystem Syntax SAMPle

/* map the E1411B registers into user memory space */base_addr_dmm = imap(e1411b, I_MAP_VXIDEV, 0, 1, NULL);/* function call to reset the multimeter *

Strany 157

HP E1326B InternalInstallationWhen the HP E1326B is installed in an HP E1300A/E1301A/E1302Amainframe, it occupies one slot. However, the faceplate to

Strany 158 - :SOURce?

/* write command to command register *//* wait for mm ready bit = 1 */while(!READY);iwpoke((unsigned short *)(base_addr_dmm + 0x08),command);/* write

Strany 159

iwpoke((unsigned short *)(base_addr_dmm + 0x0A),parm2);while(!DONE); /* wait until mm is done before sending the *//* next command and parameters */if

Strany 160 - [SENSe:]

/******************************************************/void no_dmm_parameters(char *base_addr_dmm, int command){/* this function sends those multime

Strany 161 - FUNCtion?

/* get lower word of reading from the data register, add the *//* word to the reading upper word in the variable dmm_4byte, *//* ensure upper word of

Strany 162 - RESistance:APERture

dmm_2byte = (dmm_2byte >> 1);/* get range code from rng variable, get range from *//* the appropriate range table */if (func == 2)range = ohm_ra

Strany 163 - RESistance:NPLC

ScanningMultimeterMeasurementsThe following program makes measurements using the multimeter and theHP E1460A 64-Channel Relay Module. The configurati

Strany 164 - RESistance: OCOMpensated?

360 !Set the sample source(IMMEDIATE)370 CALL Peek_meas(7,0)380 !Set the sample rate (Set if sample source is Timer (1))390 !CALL Peek_meas(10,0,70)4

Strany 165 - RESistance:RANGe

790 SUBEND800 !This subprogram calls Read_status to check the validity of bit 7 (DONE).810 !This ensures the validity of bits 6,5,4, and 1.820 SUB Wai

Strany 166 - RESistance:RANGe :AUTO

1210 CALL Read_status(Status,Rdy,Done,Indardy,Qryrdy,Noerr,Mmcomp, Pass_fail)1220 UNTIL Indardy1230 SUBEND1240 !This subprogram monitors bit 5 (MULTIM

Strany 167 - RESistance:RESolution

1630 !This subprogram writes commands and parameters to the Command and1640 !Parameter registers. When a command is written, it calls Wait_not_bsy1650

Strany 168 - VOLTage:AC:RANGe

Installing theHP E1411B in aMainframeThe HP E1411B multimeter can be installed in any slot (except slot 0) in aC-size VXIbus mainframe. Refer to Figu

Strany 169 - Example Changing the Range

2000 !This subprogram reads the measurements (all channels) from the 2010 !data buffer. It converts the measured quantities to volts, ohms, etc.,2020

Strany 170 - VOLTage:APERture?

2340 !This subprogram resets the multimeter by disabling the SYSFAIL bit,2350 !then writing a "1" to Control register bit 0, and then writi

Strany 171 - VOLTage[:DC]:RANGe

C Version This program uses the E1411B multimeter and the E1351A FETmultiplexer to perform high-speed scanning. The program configures themultimeter

Strany 172 - VOLTage:NPLC

char *base_addr_dmm; /* pointer to multimeter base address */char *base_addr_fet; /* pointer to multiplexer base address */clrscr( ); /* clear the use

Strany 173 - VOLTage:RANGe:AUTO

/* Download FET multiplexer scan list */set_scanlist(base_addr_fet);/* trigger the multimeter */ trigger_dmm(base_addr_dmm);/* close the device sessio

Strany 174 - VOLTage:RESolution

/*******************************************************/void set_sample_period(char *base_addr_dmm, int command, unsignedshort parameter){/* this fu

Strany 175 - VOLTage:RESolution?

/******************************************************/void set_dmm_counts(char *base_addr_dmm, int command, long parameter){/* this function sets t

Strany 176 - :CDEScription?

/******************************************************/void no_dmm_parameters(char *base_addr_dmm, int command){/* this function sends those multime

Strany 177

/******************************************************/void trigger_dmm(char *base_addr_dmm){/* this function triggers the multimeter and retrieves a

Strany 178 - Subsystem Syntax TRIGger

/* get range code from reading, get range from *//* the appropriate range table */range_code = ((dmm_4byte >> 24) & 7);if (func == 2)range =

Strany 179

The ReferenceFrequencyIn many data acquisition applications, DC voltage and resistancemeasurements are often made in the presence of normal mode noise

Strany 180

/******************************************************/void check_for_error(char *base_addr_dmm){unsigned short error_code; /* variable for error cod

Strany 181 - :DELay:AUTO

Useful TablesThe tables contained in this section are:• Command and Parameter Opcodes• Register-Based Programming Error Codes• Multimeter Power-On Set

Strany 182 - [:IMMediate]

Table C-2. Command and Parameter Opcodes (continued) MultimeterParameterCommandOpcodeParameterOpcode ValueQueryOpcodeQueryResponseVoltmeterComp

Strany 183

Register-BasedProgramming ErrorCodesThe error codes related to register-based programming are listed in Table C-3.Note When an error occurs, bit 6 in

Strany 184 - Querying the Trigger Source

MultimeterPower-On SettingsThe multimeter’s power-on settings are shown in Table C-4.Table C-4. Multimeter Power-On SettingsParameter Value OpcodeFun

Strany 185 - Synchronization

Function andAperture ChangeTimesTable C-5 lists the times required for the multimeter to change its functionand aperture time. The times pertain to b

Strany 186 - Command Quick Reference

VME Interrupts The HP E1326B/E1411B generates interrupt signals on the conditionsindicated in Table C-6. These signals are available to the computer(

Strany 187 - Select range

Notes268 HP E1326B/E1411B Multimeter Register-Based Programming Appendix C

Strany 188 - Specifications

Appendix DMeasurement Speed and Accuracy TradeoffsThe HP E1326B SCPI driver was designed so that its default mode ofoperation will deliver high accur

Strany 189 - DC Voltage

Avoid FunctionChangesThe E1326B multimeter (DMM) takes time to switch between its variousfunctions because the hardware is reconfigured and calibratio

Strany 190 - (volts)

Input CharacteristicsThe multimeter is a floating, balanced differential multimeter. Floating meansthe multimeter’s input terminals are isolated from

Strany 191 - For Offset

Do Binary Transfers tothe ComputerREAL 32 is fastest and is compatible with compiled languages.REAL 64 is fast and is compatible with HP BASIC.The def

Strany 192

150 GOTO End160 Kaboom: PRINT ""170 PRINT ERRM$180 PRINT "HERE IS THE E13XX ERROR STATUS"190 E13xx_errors200 End: END210 !This s

Strany 193 - µV 30 µV 61 µV

550 ENTER @Dmm;Readings(*)560 Stop=TIMEDATE570 PRINT "TIME TO READ 10000 READINGS IN ASCII=";(Stop-Start)580 !Now transfer the same data in

Strany 194

Use Macros toMinimize CommandParsing TimeMacros provide the fastest programming method when it is necessary tochange functions from one measurement to

Strany 195

Turn Auto Ranging OFF Turning auto ranging OFF makes the E1326B take all of its measurementson a fixed range which results in fast and predictable mea

Strany 196 - Messages

Setting the Resolution The aperture time is set as a result of specifying the <resolution> parameterin the MEASure or CONFigure command, or by d

Strany 197 - Code Message Cause

Store the Readings inCommand ModuleRAM Instead ofSending them Directlyto the ComputerThere is a major difference between INIT;:FETCH? and READ? after

Strany 198 - Register-Based Programming

READ? The READ? command causes the E1326B multimeter to start takingreadings as soon as the trigger requirements have been met (seeINIT;:FETCh).The RE

Strany 199

IndexHP E1326B/E1411B 5 1/2 Digit Multimeter User’s Manual*CLS, 178, 186*DMC, 186*EMC, 186*EMC?, 186*ESE, 186*ESE?, 186*ESR?, 186*GMC?, 186*IDN?, 186

Strany 200

enabling, 167, 174parameters, 94querying setting, 95, 168, 175RESistance:RANGe:AUTO, 94, 167setting, 94VOLTage:RANGe:AUTO, 94, 174AutozeroCALibration:

Strany 201 - Registers

Input Terminals The multimeter input terminals are shown in Figure 2-7. The maximuminput on the HI and LO terminals is 300 V dc (450 V ac peak). The

Strany 202 - Register Descriptions

INITiate, 142linking, 119MEASure, 42, 76 - 78, 82, 143 - 149MEMory, 150 - 152opcodes, 262 - 263OUTPut, 153 - 154parsing time, 274quick reference, 187

Strany 203 - Parameter Registers

REAL-32, 80, 140, 271REAL-64, 58, 80, 140, 271selecting, 80specifying, 80, 140vs. reading destination, 81DC Voltage Measurements, 42accuracy condition

Strany 204 - – Data Buffer (base + 0C

scanning multimeter measurements, 20, 246 - 261setting aperture time and sample period, 110setting sample count, 108setting trigger count, 105setting

Strany 205 - Register

reference thermistor, 89terminal module connections, 33 - 36thermocouple measurements, 130, 146thermocouple types, 89HP E1403B Adapter, 37cables, 38HP

Strany 206 - Response Register

measurement speed, 56 - 57MEASurecommands, 143 - 149making measurements with, 78, 82parameters, 91subsystem, 143 - 149used as a single command, 20used

Strany 207 - Two-Byte Reading

burst measurements, 45high-speed scans, 54 - 55scans, making, 47 - 48MultiplexerAC voltage measurement, 130, 147connected to multimeter, 14, 29 - 31,

Strany 208 - Converting Four-Byte

register-based, 199 - 268timing and execution, 210QQuery Response Register, 207, 226 - 229reading an error code, 230 - 233QueryingAC voltage range, 17

Strany 209 - Program Timing and Execution

error codes, 264examples, 220 - 261function change times, 266ID register, 205, 223parameter register, 204parameters opcodes, 262 - 263power-on setting

Strany 210 - Configuring the

Saving Multimeter Configurations, 114*SAV, 114example program, 115how to, 114in memory, 14ScanningB-size switchbox channels, 50 - 51C-size switchbox c

Strany 211

integration time, 98, 163 - 164, 171, 173IRQ jumper, 24line reference frequency, 123logical address switch, 22 - 23pacing source, 158range, 93, 166rea

Strany 212 - Measurements

ConnectingMultiplexersIn a scanning multimeter configuration, the multimeter is connected to themultiplexers with an analog bus cable, or with the ana

Strany 213 - – Command Register (base + 08

delay, 106 - 107, 181 - 182group execute (GET), 103, 122immediately, 183lines (TTL), 153 - 154model, 218readings per, 157registers, 217 - 219sample co

Strany 214 - • The registers used are:

Notes292 HP E1326B/E1411B 5 1/2 Digit Multimeter User’s Manual Index

Strany 215 - Using a Multiplexer

Making Multiple Burst Measurements . . . . . . . . . . . . . . . . . . . . . . . . . . 45Scanning a Channel List . . . .

Strany 216 - Register Triggering

Analog BusConnections at theMultimeterThe analog bus coming from the multiplexer consists of six lines. On themultiplexer terminal block these lines

Strany 217 - Triggering Model

Connecting Input SignalsThis section contains guidelines on connecting input signals to themultimeter and shows the connections required to make the f

Strany 218

MeasurementConnectionsE1460AE1346AE1352AE1345A/47A/51A/53AFigure 2-12. Connections for DC and AC Voltage MeasurementsChapter 2 Configuring the HP E13

Strany 219 - Programming Examples

Note 2-wire resistance measurements require the multiplexer modules shownabove. Resistance measurements using the multimeter terminals or directlythr

Strany 220 - HP BASIC/WS

NOTE: Channel Pairs are banks 0/4, 1/5, 2/6, and 3/7.See Chapter 2 of the HP E1460A User’s Manual.E1460AE1345A/47A/51A/53AFigure 2-14. Connections for

Strany 221 - C Version

E1344A/47A/53AE1476AFigure 2-15. Connections for Thermocouples36 Configuring the HP E1326B/E1411B Multimeter Chapter 2

Strany 222 - HP BASIC/WS Version

Carrier Cable AssembliesThe following table and figures show the cables used to connect relay andFET multiplexers to the HP E1411B multimeter. These

Strany 223

Figure 2-16. Cables for B-Size Multiplexers in HP E1403B Adapter38 Configuring the HP E1326B/E1411B Multimeter Chapter 2

Strany 224

Additional ConfigurationsThis section contains information on two additional configurations for themultimeter:• selecting VME RAM, and• disabling fron

Strany 225

Notes40 Configuring the HP E1326B/E1411B Multimeter Chapter 2

Strany 226

Saving Multimeter Configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114How to Save and Recall a Conf

Strany 227

Chapter 3Using the HP E1326B/E1411B MultimeterAbout This ChapterThis chapter is a collection of example programs which show you how tomake measuremen

Strany 228

Multimeter Connections Chapter 2 contains information on connecting input signals for themeasurements described in this chapter.The MEASure andCONFigu

Strany 229

Making a Burst of MeasurementsThis program makes 100 DC voltage measurements on the terminalsconnected to the multimeter’s faceplate. 10 !Dimension a

Strany 230

Making an Externally Triggered Burst of MeasurementsThis program makes a burst of 10 measurements on the faceplate terminalswhen the multimeter receiv

Strany 231

Making Multiple Burst MeasurementsThis program makes multiple burst measurements with a 5 second delaybetween bursts. There are three bursts, each co

Strany 232

• The trigger delay is the period between the trigger signal and thestart of the measurement (burst). The trigger delay set byCONFigure is 0 seconds

Strany 233 - HP BASIC/WS Version

Making Multiple ScansThis program scans a channel list multiple times. 10 !Dimension a computer array to store the readings. 20 DIM Rdgs(1:20) 30 !Cle

Strany 234 - Continued on Next Page

Making Multiple Paced ScansThis program makes multiple scans through a channel list with the scansoccurring at specified intervals. 10 !Dimension a co

Strany 235

Making an Externally Triggered ScanThis example makes one scan through a channel list when the multimeterreceives an external trigger. 10 !Dimension a

Strany 236

Scanning Switchbox Channels (E1326B/E1351A)In this example, the stand-alone multimeter (HP E1326B) scans 5 channelsof an HP E1351A FET multiplexer swi

Strany 237

:VME:STATe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152:VME:STATe? . . . .

Strany 238 - == 0x91)

380 OUTPUT 70903;"INIT"390 !Retrieve the readings from multimeter memory and enter them into the400 !controller. Clear the switchbox to exi

Strany 239

Scanning Switchbox Channels (E1411B/E1460A)In this example, the stand-alone multimeter (HP E1411B) scans 64 channelson an HP E1460A relay multiplexer

Strany 240

370 !Retrieve the readings from multimeter memory, enter and display them380 !on the computer.390 OUTPUT 70903;"FETC?"400 ENTER 70903;Rdgs(*

Strany 241

Multiple High-Speed ScansThis example shows how a scanning multimeter consisting of the HP E1326Bmultimeter and HP E1351A FET multiplexer is programme

Strany 242

370 !Trigger the multimeter to start the measurements. Retrieve the readings380 !from multimeter memory and enter them into the controller. Since the

Strany 243

Maximizing Measurement SpeedThis program shows the multimeter configuration required to makemeasurements at the fastest possible rate (13150 readings/

Strany 244

• The terms MIN and MAX often appear as parameter choices in acommand’s syntax. MIN selects the minimum numeric value for thatparameter. MAX selects

Strany 245

Changing the Data FormatThroughput speed between the multimeter and computer is increased whenbinary (rather than ASCII) data formats are used. The f

Strany 246

• When HP BASIC is used, the program’s ENTER @Dmm USING ...statement is used to remove the Arbitrary Block header:# - tells the computer to terminate

Strany 247

Using a PC, C Language, and theHP 82335 HP-IB Interface CardThe following benchmark program scans 50 channels, 40 times, andcompares each reading to u

Strany 248

:COUNt? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 180:DELay . . . . .

Strany 249

void main(void) /* run the program */ { clrscr(); /* clears screen (turbo C only) */ rst_clr(); /* reset the scanning multimeter */ scan_mu

Strany 250

if (rdgs[j] -.5 || rdgs[j] = .5)printf("\n%f", rdgs[j]);}}}T2 = time(NULL); /* get stop time *//* calculate time for measurements */printf(

Strany 251

Maximizing Measurement AccuracyThis program makes DC voltage measurements on three channels using themultimeter configuration which makes the most acc

Strany 252

Storing Readings in Shared MemoryThe following program stores the multimeter readings on a VME memory card. 10 !Dimension computer variables to store

Strany 253

Comments• Once the INIT command completes, the readings in shared memoryare available to any device. The readings at this time are in 32-bitREAL form

Strany 254

Checking for ErrorsThe following program is a method of checking for errors as you program themultimeter. The program monitors the multimeter’s Stand

Strany 255

Comments• If you have an HP 75000 Series B mainframe with a keyboard, errorscan be monitored by selecting "Monitor" from the multimeter menu

Strany 256

Synchronizing the Multimeter with a ComputerThis is an example of how an HP 9000 Series 200/300 computer canmonitor the multimeter to determine when d

Strany 257

Additional Measurement FunctionsThe following MEASure and CONFigure statements can be substituted intothe example programs to make measurements other

Strany 258

!2-wire thermistor (type = 2252, 5000, 10000).OUTPUT 70903;"MEAS:TEMP? THER,type,(@channel_list)"!4-wire thermistor (type = 2252, 5000, 1000

Strany 259

Reading the Device Type Register . . . . . . . . . . . . . . . . . . . . . . . . . . 224Reading the Query Response Register

Strany 260

Additional FunctionUsing the HP E1345AMultiplexerThis is an example of how to setup scanning when using an HP E1345Amultiplexer configured as a switch

Strany 261 - Useful Tables

310 !320 !Subprogram Scan_100µs.330 !340 SUB Scan_100us350 COM @Sys,@Dvm,@Sw360 DIM Readings(0:15)370 !380 !Clear and reset multimeter.3

Strany 262

850 !Clear and reset multimeter. 860 ! 870 CLEAR @Dvm 880 OUTPUT @Dvm;"*RST;*CLS;*OPC?" 890 ENTER @Dvm;A 900 !

Strany 263 - Programming Error

Notes74 Using the HP E1326B/E1411B Multimeter Chapter 3

Strany 264 - Power-On Settings

Chapter 4Understanding the HP E1326B/E1411BMultimeterAbout This Chapter This chapter describes the parameters which configure the multimeter andhelps

Strany 265 - Aperture Change

Using MEASure and CONFigure CommandsEach time the multimeter makes a measurement, it does so from aconfiguration based on several parameters. The eas

Strany 266 - Interrupt

Table 4-1. Configurations Using MEASure and CONFigureParameter Command SettingFunction As specified.RangeVOLTage:RANGeRESistance:RANGeAs specified or

Strany 267

How to Make MeasurementsThis section explains when you should use MEASure or CONFigure toconfigure the multimeter. It also shows you how to make meas

Strany 268 - Appendix D

Making MeasurementsWhen Using CONFigureTo make a measurement the multimeter must be in the wait-for-trigger statewhen a trigger signal occurs. The ME

Strany 269

Data Formats and DestinationsThe HP E1326B/E1411B multimeter allows you to specify themeasurement (data) format and reading destination parameters whi

Strany 270

CertificationHewlett-Packard Company certifies that this product met its published specifications at the time of shipment from the factory. Hewlett-P

Strany 271

Overload Indications The multimeter indicates an overload condition (input greater than theselected range can measure) by displaying or storing:±9.900

Strany 272

Example: EnteringData into the Computer(measurements usingMEASure) 10 !Declare computer array to store 5 readings. 20 REAL Dc_rdgs(1:5) 30 !Configure

Strany 273

4. Data stored in memory overwrites the data from a previous command.5. Each reading stored in memory is four bytes (REAL 32-bit). Thisformat canno

Strany 274 - Decrease Aperture

Example: RetrievingData from Memory 10 !Declare computer array to store 12 readings. 20 REAL Ohm_rdgs(1:12) 30 !Configure the multimeter. 40 OUTPUT 70

Strany 275 - Temperature

ReadingDestinationSummaryThe reading destination you select will depend on your application.However, consider the following when selecting a destinati

Strany 276 - Reserves room for 1000 four

Measurement FunctionsThe HP E1326B/E1411B multimeter can make the following measurements:– DC Voltage– RMS AC Voltage– 2-Wire Resistance– 4-Wire Resis

Strany 277

The AC voltage function is specified as: VOLTage:ACand generally appears in the MEASure and CONFigure commands as:MEAS:VOLT:AC? ... [(@channel_list)]C

Strany 278

Two-WireMeasurementsTwo-wire measurements are useful in applications where test leadresistance is not critical. Because the multimeter measures the t

Strany 279

This function appears in the MEASure and CONFigure commands as:MEAS:TEMP? THER,type,(@channel_list)CONF:TEMP THER,type,(@channel_list)Four-wire measur

Strany 280

Four-wire measurements are specified as:TEMP FRTD,typeThe function appears in the MEASure and CONFigure commands as:MEAS:TEMP? FRTD,type[,(@channel_li

Strany 281

Frame or chassis ground terminal—typi-cally connects to the equipment’s metalframe.Alternating current (AC).Direct current (DC). Indicates hazardous v

Strany 282

Example: ChangingMeasurementFunctions withFUNCtion 10 !Configure for DC voltage measurement. 20 CONF:VOLT:DC 30 !Put multimeter in wait-for-trigger st

Strany 283

Table 4-5. Aperture Time, Range, and Resolution SettingsAperture Time Integration Time (PLCs) 10 µs*0.0005100 µs0.0052.5 ms0.12516.7 ms120 ms1267 ms16

Strany 284

Range The range parameter sets the range of input signal levels the multimeter isto accept and measure. Consider the following when determining a ran

Strany 285

Autorange The default range is autorange. Autorange is the process where themultimeter samples the input signal, and then automatically selects theco

Strany 286

Querying theAutorange SettingThe autorange setting is queried with the VOLTage:RANGe:AUTO? andRESistance:RANGe:AUTO? commands. See Chapter 5 for addi

Strany 287

Setting the Resolution The resolutions for DC/AC voltage and resistance measurements are givenin Table 4-5 on page 92. Note that the resolution is sp

Strany 288

Aperture andIntegration TimeThe aperture time or integration time is the time which the multimetersamples the input signal. Aperture time is expresse

Strany 289

Setting the Apertureand Integration TimeThe multimeter aperture times, integration times, line frequency rejected,and the amount of normal mode reject

Strany 290

Autozero Autozero is the process of cancelling out the offset voltage from DC voltageand resistance measurements. When the multimeter is triggered an

Strany 291

OffsetCompensationAnytime a resistance measurement is made, offset voltages internal andexternal to the multimeter can be present. When these offsets

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