Main
            Page
              WARRANTY
            Page
              Table of Contents
Getting Started                
Operating Basics
              Syntax and Commands
              Table of Contents
VX4101A MultiPaq Instrument User Manual iii                
SCPI Commands for the Digital Input 3115. . . . . . . . . . . . . . . . . . . . . . . . . 
SCPI Commands for the Digital Output 3147. . . . . . . . . . . . . . . . . . . . . . . .                 
SCPI Commands for the Digital to Analog Converter 3169. . . . . . . . . . . . 
              Status and Events
Status and Event Reporting System 41. . . . . . . . . . . . . . . . . . . . . . . . . . .               
Appendices
Glossary and Index              
List of Figures
              List of Tables
            Page
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              General Safety Summary
To Avoid Fire or Personal Injury              
Symbols and Terms
              Service Safety Summary
            Page
              Preface
Conventions            
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              Product Description
VX4101A Description                
Features
              Performance Options
About the Universal Counter              
About the Digital Input and Output Modules
              About the Digital Multimeter (DMM)
              About the Digital to Analog Converter
About the Relay Drivers About the SurePatht Modules            
Page
              Power-On Sequence
Physical Description              
Controls and Indicators
              LEDs
Front Panel Connectors              
Fuses
IEEE-488 Address                
Self-Test
VX4101A MultiPaqt Instrument Self-Test            
Page
Product Description                
112 VX4101A MultiPaq Instrument User Manual
              Accessories
Table 13: Optional Accessories               
Performance Options
About the VXIplug&play Software              
Using the VXI plug&play Software
              Installation
Installing the Module in the Mainframe                
Tools Required Requirements and Cautions
              Module Installation Procedure
              Installing the VXIplug&play Software
About the Device Drivers                
Installation Procedure
              Driver Files
            Page
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              Powering-On the VX4101A
Preparing the Instrument to Receive Commands              
Installation
VX4101A MultiPaq Instrument User Manual 123                
Table 16: Commands Available at Power-On (Cont.)
              Installation
124 VX4101A MultiPaq Instrument User Manual                
Table 16: Commands Available at Power-On (Cont.)
              SYSFAIL* Operation
Functional Check                
Self-Test
              Operational Check
            Page
              Option 1D Operational Check
            Page
              Installation Checklist
            Page
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              About Global and Instrument Commands
About Global Commands                
About Instrument Commands
            Page
              VX4101A Operational Modes
About Synchronous Mode                
About Asynchronous Mode
              Asynchronous Mode Commands
              Asynchronous Query Responses
              Sequence Name Format
Sequence Number Format            
Page
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              About Instrument Triggering
Trigger Sources              
About Instrument Triggering
210 VX4101A MultiPaq Instrument User Manual                
Table 21: VX4101A Global Trigger Sources (Cont.)
Table 22: VX4101A Counter-Specific Trigger Sources               
VX4101A Trigger Architecture
Additional Instrument-Specific Trigger Sources              
About Instrument Triggering
212 VX4101A MultiPaq Instrument User Manual                
ARM:STARt Sources for Counter ARM:STOP Sources for Counter
VX4101A Trigger Output Sources                
SurePath Trigger Sources DMM, DAC, Digital Input, and Digital Output Trigger Sources
              About Fast Data Channel (FDC) Operation
About FDC                
The FDC Process
            Page
              Establishing a Communications Session
Opening and Configuring an FDC                
Transferring Data Via the FDC Channel
              FDC Operation with the DMM and DAC
Closing the FDC Channel Terminating the Instrument Session                
FDC SCPI Commands
About Physical and Logical Channels              
FDC Example
              Establishing a Communications Session
Configuring the FDC Channel              
Other Attributes
Opening the FDC Channel              
Transferring Data
              Closing the FDC Channels
Terminating the Communication Session            
Page
              Using the VX4101A MultiPaqt Instrument
Using Asynchronous Mode                
Starting Sequence Number
            Page
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              Using the Counter
Measuring Frequency              
Measuring Time Interval
              Measuring Rise Time
              Measuring Time Interval with Delay
            Page
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              Using the Digital Input
Start-Up Shared Pin Assignments with Digital Output Digital Output Source                
About Triggering
              Programming the Digital Input
              Reading Current Input
Reading Points Using the External Handshake Feature            
Page
              Using the Digital Output
              Outputing One 32-Bit Word
              Outputing a Sequence
            Page
              Using the Digital Multimeter
MEASure and CONFigure Commands                
Selecting the Input Impedance
              About Low Level DC Measurements
              About Power Line Noise and Common Mode Rejection
              Making a DC Volt Measurement
Making AC Volt Measurements              
Making a 2-Wire Resistance Measurement
              Making a Current Measurement
              Using the Digital to Analog Converter (DAC)
Key Concepts              
Generating Continuous and Multiple Waveforms
DAC Trigger Modes                
Using the Internal Clock
DAC Channel Common Functions            
Page
              Generating Repetitive Waveforms
              Reading a Trace from the DAC in Binary
              Using the Sample Handshake Mechanism
              Programming a Trace with a Numeric Array List
            Page
              Using the Relay Drivers
Opening and Closing Relays            
Page
              Using the SurePatht Modules
SurePatht Module                
Closing a Relay
            Page
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              Command Syntax
About Protocol and Syntax            
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              SCPI/IEEE 488.2 Command Elements
            Page
              SCPI Commands for the VX4101A
ABORt Subsystem              
SOURce Subsystem
SYStem Subsystem              
ABORt Subsystem
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              SOURce Subsystem
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              SYSTem Subsystem
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              SCPI Commands for the VX4101A
322 VX4101A MultiPaq Instrument User Manual                
Table 31: Commands Available at Power-On (Cont.)
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              SCPI Commands for the Counter
ARM Subsystem              
CALCulate Subsystem
            Page
              FETCh? Subsystem
              INPut Subsystem
              MEASure? Subsystem
            Page
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              ARM Subsystem
SOURce Subsystem                
UNIT Subsystem
            Page
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              VX4101A MultiPaq Instrument User Manual 341
              342 VX4101A MultiPaq Instrument User Manual
ARM ([:SEQuence1] |:STARt) [:LAYer]:DELay <delay in seconds>                
ARM ([:SEQuence1] |:STARt) [:LAYer]:ECOunt
              VX4101A MultiPaq Instrument User Manual 343
ARM ([:SEQuence1] |:STARt) [:LAYer]:IMMediate                
ARM ([:SEQuence1] |:STARt) [:LAYer]:LEV el
ARM ([:SEQuence1] |:STARt) [:LAYer]:MODE              
344 VX4101A MultiPaq Instrument User Manual
            Page
              346 VX4101A MultiPaq Instrument User Manual
ARM (:SEQuence2 |:STOP) [:LAYer]:IMMediate                
ARM (:SEQuence2 |:STOP) [:LAYer]:SOURce:CATalog:ALL
ARM(:SEQuence2|:STOP)[:LAYer]:SOURce:CATalog[:ALL]?               
CALCulate Subsystem
            Page
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              VX4101A MultiPaq Instrument User Manual 351
              352 VX4101A MultiPaq Instrument User Manual
              VX4101A MultiPaq Instrument User Manual 353
              354 VX4101A MultiPaq Instrument User Manual
CALCulate:AVERage?[<count>[,<offset>[,<step_size>]]]                
CALCulate:LIMit:ENVelope[:DATA]
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              INPut Subsystem
            Page
              380 VX4101A MultiPaq Instrument User Manual
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              MEASure? Subsystem
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              SOURce Subsystem
              STATus Subsystem
            Page
              3112 VX4101A MultiPaq Instrument User Manual
            Page
              UNIT Subsystem
              SCPI Commands for the Digital Input
CALibration Subsystem              
FETch? Subsystem
MEASure Subsystem            
Page
              STATus Subsystem
              CALibration Subsystem
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              MEASure Subsystem
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              Resolution
            Page
              VX4101A MultiPaq Instrument User Manual 3135
SENSe:ARRay                
SENSe:PSELect:DIGLobal 
SENSe:PSELect:DIPort                
SENSe:PSELect:DIBit
            Page
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              VX4101A MultiPaq Instrument User Manual 3143
TRIGger:MASK <mask>                
TRIGger ([:SEQuence1] |:STARt)[:LAYer]:ECOunt 
              3144 VX4101A MultiPaq Instrument User Manual
              VX4101A MultiPaq Instrument User Manual 3145
TRIGger([:SEQuence1]|:STARt)[:LAYer]:SOURce:CATalog:DELayable?                
TRIGger([:SEQuence1] |:STARt)[:LAYer]:SOURce:CATalog:FIXed?
            Page
              SCPI Commands for the Digital Output
              TRACe Subsystem
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              TRACe Subsystem
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              VX4101A MultiPaq Instrument User Manual 3161
TRACe [:DATA]<numeric_list>{,<data_values>}                 
TRACe:INDice?
            Page
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              3166 VX4101A MultiPaq Instrument User Manual
TRIGger ([:SEQuence1] |:STARt)[:LAYer]:ECOunt               
VX4101A MultiPaq Instrument User Manual 3167
            Page
              SCPI Commands for the Digital to Analog Converter
              TRACe Subsystem
              VXI:FDC Subsystem
            Page
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              TRACe Subsystem
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              Resolution
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              SCPI Commands for the Digital to Analog Converter
VX4101A MultiPaq Instrument User Manual 3191                
TRIGger ([:SEQuence1] |:STARt)[:LAYer]:ECOunt 
              SCPI Commands for the Digital to Analog Converter
3192 VX4101A MultiPaq Instrument User Manual                
TRIGger([:SEQuence1]|:STARt)[:LAYer]:SOURce:CATalog:DELayable?
              VXI:FDC Subsystem
            Page
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              SCPI Commands for the Relay Drivers
ROUTe Subsystem            
Page
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              SCPI Commands for the Digital Multimeter
CALCulate Subsystem              
FETCh? Subsystem
              INPut Subsystem
MEASure? Subsystem            
Page
              VXI:FDC Subsystem
              CALCulate Subsystem
            Page
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              VX4101A MultiPaq Instrument User Manual 3221
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              INPut Subsystem
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              MEASure? Subsystem
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              Formats
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              3246 VX4101A MultiPaq Instrument User Manual
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              3248 VX4101A MultiPaq Instrument User Manual
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              VX4101A MultiPaq Instrument User Manual 3253
TRIGger ([:SEQuence1] |:STARt)[:LAYer]:ECOunt               
3254 VX4101A MultiPaq Instrument User Manual
              VXI:FDC Subsystem
            Page
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              SCPI Commands for the SurePath Modules
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              ROUTe Subsystem
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              3270 VX4101A MultiPaq Instrument User Manual
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              VX4101A MultiPaq Instrument User Manual 3279
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              VX4101A MultiPaq Instrument User Manual 3283
[ROUTe:]OPEN:ALL                
[ROUTe:]OPEN:DWELl
            Page
              VX4101A MultiPaq Instrument User Manual 3285
[ROUTe:]SCAN:RATE              
STATus Subsystem
            Page
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              VX4101A MultiPaq Instrument User Manual 3291
TRIGger([: SEQuence1] |:STARt) [:LAYer]:IMMediate            
Page
              IEEE-488.2 Common Commands
*CLS              
*ESE
*ESR              
*IDN?
              *OPC
              *RST
            Page
              IEEE-488.2 Common Commands
VX4101A MultiPaq Instrument User Manual 3299                
Table 316: 
Table 317: Digital Input Settings                 
Table 318: Digital Output Settings 
            Page
              *SRE
              *STB?
*TRG              
*TST?
              *WAI
            Page
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              Status and Event Reporting System
              Status and Event Reporting System
42 VX4101A MultiPaq Instrument User Manual                
Figure 41: VX4101A Standard Registers
              Status and Event Reporting System
VX4101A MultiPaq Instrument User Manual 43                
Figure 42: Instrument Operational Status Registers Table 41: 
            Page
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              STATus and Event Commands
STATus Subsystem                
IEEE 488.2 Commands
              STATus
              STATus : OPERation : ENABle
              STATus : OPERation [:EVENt]?
              STATus : OPERation : NTRansition
              STATus : OPERation : PTRansition
              STATus : QUEue : ENABle <numeric list>
              STATus : QUEue [:NEXT]?
              STATus : QUEStionable [:EVENt]?
              STATus : QUEStionable : CONDition?
              STATus : QUEStionable : ENABle
              STATus : QUEStionable : NTRansition
              STATus : QUEStionable : PTRansition
              Status Subsystem Example
            Page
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VX4101A MultiPaq Instrument User Manual A1              
Appendix A: Specifications
VX4101A General Characteristics                
Table A1: VXI Instrument Characteristics
Table A2: Power Supply Voltage and Current              
A2 VX4101A MultiPaq Instrument User Manual
Table A3: Environmental/Reliability Characteristics                
Table A4: VX4101A-Specific Characteristics 
              Over Voltage Indication
              Universal Counter Specifications
              VX4101A MultiPaq Instrument User Manual A5
Table A8: Channel 1 and 2 Period                 
Table A9: Channel 3 Frequency (Option 2C) 
Table A10: Channel 3 Period (Option 2C)               
A6 VX4101A MultiPaq Instrument User Manual
Table A11: Time Interval                 
Table A12: Frequency Ratio 
Table A13: Channels 1 and 2 Totalizer                 
Table A14: Channels 1 and 2 Rise/Fall Time 
              VX4101A MultiPaq Instrument User Manual A7
Table A15: Channels 1 and 2 Positive/Negative Pulse Width                  
Table A16: Frequency Ratio 1/2,2/1,3/1,3/2,1/3,2/3 
Table A17: Voltages                 
Table A18: Channels 1 and 2 Input Characteristics 
              A8 VX4101A MultiPaq Instrument User Manual
Table A18: Channels 1 and 2 Input Characteristics (Cont.)                
Table A19: Channel 3 Input Characteristics (Option 2C) 
            Page
              A10 VX4101A MultiPaq Instrument User Manual
Table A24: TimeBase Characteristics (Option 1T)                 
Table A25: Gate Input Trigger  
            Page
              A12 VX4101A MultiPaq Instrument User Manual
Table A30: Counter Specifications Terms               
VX4101A MultiPaq Instrument User Manual A13
Table A30: Counter Specifications Terms (Cont.)              
Digital Multimeter (DMM) Specifications
            Page
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              VX4101A MultiPaq Instrument User Manual A17
Table A42: DC ECMR (50/60/400 Hz)                 
Table A43: TRMS AC Voltage (DC Coupled and AC Coupled) 
Table A44: TRMS Accuracy Specifications 24-Hour              
Page
            Page
              A20 VX4101A MultiPaq Instrument User Manual
Table A51: Resistance Accuracy Specifications for 2-Second Aperture             
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VX4101A MultiPaq Instrument User Manual A25              
Digital Input and Output (Option 1D)
Table A58: Digital Input Characteristics                 
Table A59: Digital Output Characteristics 
              Digital to Analog Converter (DAC) (Option 1A)
              Relay Drivers (Option 1D)
SurePath Specifications                
A28 VX4101A MultiPaq Instrument User Manual
              Certifications and Compliances
Table A62: Certifications and compliances             
Page
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VX4101A MultiPaq Instrument User Manual B1              
Appendix B: Input/Output Connections
Table B1: Digital Multimeter (DMM) Input/Output Connections               
B2 VX4101A MultiPaq Instrument User Manual
Table B2: 160-Pin Connector Pinouts               
VX4101A MultiPaq Instrument User Manual B3
Table B2: 160-Pin Connector Pinouts (Cont.)              
B4 VX4101A MultiPaq Instrument User Manual
Table B2: 160-Pin Connector Pinouts (Cont.)              
Appendix C: Instrument I/O Operation
Normal Transfer Mode Read Operation                
Normal Transfer Mode Write Operation
              Configuration Registers
            Page
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VX4101A MultiPaq Instrument User Manual D1              
Appendix D: Counter Architecture
            Page
              Appendix E: Obsolete Commands
Counter Commands            
Page
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            Page
              Appendix F: Performance Verification Procedure
Semi-Automated PVP Procedures                
Manual PVP Procedures
            Page
              Appendix G: Calibration
Calibration for the DMM              
DC Mode Calibration Procedure
              DC Range 3 VDC with
DC Range 30 VDC with              
DC Range 300 VDC with
DC Range .03 VDC with              
DC Range 0.3 VDC with
DC Range 3 VDC with              
TRMS AC (DC Coupled) Mode Calibrations
.03 VDC or RMS                
0.3 VDC or RMS
              3 VDC or RMS
30 VDC or RMS                
300 VDC or RMS
              Resistance Mode Calibration Procedure
Resistance 30 W4-Wire                
Resistance 30 W2-Wire
              Resistance 300 W
Resistance 3 kW                
Resistance 30 kW
              Resistance 300 kW
Resistance 3 MW                
Resistance 30 MW
              Resistance 300 MW
              Current Mode Calibration Procedure
Current .15A                
Current 1A
              Calibration for the Counter
Prerequisites Equipment Required                
Recommended Calibration Interval What You Should Know About
              Step One: Initialize the instrument
              Step Two: Individual Channel Adjustments
              Step Three: Common Function and Cross-Channel Calibration Adjustments
            Page
              Factory Calibration
System Clock Calibration              
Calibration for the Digital to Analog Converter
            Page
              DAC Calibration Procedure
Before You Begin                
Adjusting Gain
Adjusting Offset              
Repeating the Proceedure Saving the Results in EEPROM
              Calibration for the Digital Input
              Digital Input Calibration Procedure
              Appendix H: User Service
Performance Verification                
Preventive Maintenance
Troubleshooting            
Page
              Appendix I: Replaceable Parts
Parts Ordering Information                
Module Servicing
              Using the Replaceable Parts List
Abbreviations Mfr. Code to Manufacturer Cross Index              
VX4101A MultiPaq Instrument User Manual I3
Manufacturers cross index                 
Mfr. code Manufacturer Address City, state, zip code
              I4 VX4101A MultiPaq Instrument User Manual
Replaceable parts list                 
discontd Qty Name & description Mfr.
effective Serial no.                
number Serial no.
              VX4101A MultiPaq Instrument User Manual I5
Replaceable parts list (cont.)              
I6 VX4101A MultiPaq Instrument User Manual
A2 A5 A1 A4                
Figure I1: VX4101A Exploded View
A3            
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              Glossary
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VX4101A MultiPaq Instrument User Manual Index1              
Index
A                
C
Index2 VX4101A MultiPaq Instrument User Manual              
D
VX4101A MultiPaq Instrument User Manual Index3              
E
F                
G
H                
I
              M
N                
O
P                
R
              T
Index6 VX4101A MultiPaq Instrument User Manual              
U
V                
W