Agilent 6812B Programmers Guide

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Programming Guide

AC Power Solutions

HP Models 6811B, 6812B, 6813B

6814B, 6834B, and 6843A

HP Part No. 5962-0889 Printed in U.S.A. Microfiche No 6962-0890 December, 1998

Safety Summary

The beginning of the ac source User’s Guide has a Safety Summary page. Be sure you are familiar with the information on this page before programming the ac source from a controller.

WARNING: ENERGY HAZARD. Ac sources can supply 425 V peak at their output. DEATH on

contact may result if the output terminals or circuits connected to the output are touched when power is applied.

Printing History

The edition and current revision of this manual are indicated below. Reprints of this manual containing minor corrections and updates may have the same printing date. Revised editions are identified by a new printing date. A revised edition incorporates all new or corrected material since the previous printing date. Changes to the manual occurring between revisions are covered by change sheets shipped with the manual.

This document contains proprietary information protected by copyright. All rights are reserved. No part of this document may be photocopied, reproduced, or translated into another language without the prior consent of Hewlett-Packard Company. The information contained in this document is subject to change without notice.

Edition 2 __________March, 1997 Edition 3 __________December, 1998

Safety Summary 2 Printing History 2 Table of Contents 3

1 - GENERAL INFORMATION 11

About this Guide 11

Earlier AC Source Models 11 Documentation Summary 11

External References 12

SCPI References 12 HP-IB References 12

HP VXIplug&play Power Products Instrument Drivers 12

Supported Applications 12 System Requirements 12 Downloading and Installing the Driver 13 Accessing Online Help 13

2 - INTRODUCTION TO PROGRAMMING 15

HP-IB Capabilities of the AC Source 15

HP-IB Address 15

RS-232 Capabilities of the AC Source 15

RS-232 Data Format 15 Baud Rate 15 RS-232 Programming Example 16 RS-232 Troubleshooting 16

Introduction to SCPI 17

Conventions Used in This Guide 17 Types of SCPI Commands 17 Types of SCPI Messages 17

The SCPI Command Tree 18

The Root Level 18 Active Header Path 18 The Effect of Optional Headers 19 Moving Among Subsystems 19 Including Common Commands 19 Using Queries 20 Coupled Commands 20

Structure of a SCPI Message 20

The Message Unit 20 Combining Message Units 21 Headers 21 Query Indicator 22 Message Unit Separator 22 Root Specifier 22 Message Terminator 22

SCPI Data Formats 23

Numerical Data Formats 23 Suffixes and Multipliers 23 Character Data 23

System Considerations 24

Assigning the HP-IB Address in Programs 24 Types of DOS Drivers 24 Error Handling 25 HP BASIC Controllers 25

3 - LANGUAGE DICTIONARY 27

Introduction 27 Subsystem Commands 28 Calibration Subsystem Commands 29

Subsystem Syntax 29 CALibrate:CURRent:AC 29 CALibrate:CURRent:MEASure 30 CALibrate:DATA 30 CALibrate:IMPedance 30 CALibrate:LEVel 30 CALibrate:PASSword 30 CALibrate:PWM:FREQuency 31 CALibrate:PWM:RAMP 31 CALibrate:SAVE 31 CALibrate:STATe 32 CALibrate:VOLTage:AC 32 CALibrate:VOLTage:DC 32 CALibrate:VOLTage:OFFSet 33 CALibrate:VOLTage:PROTection 33 CALibrate:VOLTage:RTIMe 33

Display Subsystem Commands 34

Subsystem Syntax 34 DISPlay 34 DISPlay:MODE 34 DISPlay:TEXT 34

Instrument Subsystem 35

Subsystem Syntax 35 INSTrument:COUPle 35 INSTrument:NSELect INSTrument:SELect 36

Measurement Subsystem (Arrays) 37

Subsystem Syntax 37 MEASure:ARRay:CURRent? FETCh:ARRay:CURRent? 37 MEASure:ARRay:CURRent:HARMonic? FETCh:ARRay:CURRent:HARMonic? 38 MEASure:ARRay:CURRent:HARMonic:PHASe? FETCh:ARRay:CURRent:HARMonic:PHASe? 38 MEASure:ARRay:CURRent:NEUTral? FETCh:ARRay:CURRent:NEUTral? 39 MEASure:ARRay:CURRent:NEUTral:HARMonic? FETCh:ARRay:CURRent:NEUTral:HARMonic? 39 MEASure:ARRay:CURRent:NEUTral:HARMonic:PHASe? FETCh:ARRay:CURRent:NEUTral:HARMonic:PHASe? 40 MEASure:ARRay:VOLTage? FETCh:ARRay:VOLTage? 40 MEASure:ARRay:VOLTage:HARMonic? FETCh:ARRay:VOLTage:HARMonic? 41 MEASure:ARRay:VOLTage:HARMonic:PHASe? FETCh:ARRay:VOLTage:HARMonic:PHASe? 41

Measurement Subsystem (Current) 42

Subsystem Syntax 42 MEASure:CURRent? FETCh:CURRent? 42 MEASure:CURRent:AC? FETCh:CURRent:AC? 43 MEASure:CURRent:ACDC? FETCh:CURRent:ACDC? 43 MEASure:CURRent:AMPLitude:MAXimum? FETCh:CURRent:AMPLitude:MAXimum? 43

MEASure:CURRent:CREStfactor? FETCh:CURRent:CREStfactor? 44 MEASure:CURRent:HARMonic? FETCh:CURRent:HARMonic? 44 MEASure:CURRent:HARMonic:PHASe? FETCh:CURRent:HARMonic:PHASe? 45 MEASure:CURRent:HARMonic:THD? FETCh:CURRent:HARMonic:THD? 45 MEASure:CURRent:NEUTral? FETCh:CURRent:NEUTral? 45 MEASure:CURRent:NEUTral:AC? FETCh:CURRent:NEUTral:AC? 46 MEASure:CURRent:NEUTral:ACDC? FETCh:CURRent:NEUTral:ACDC? 46 MEASure:CURRent:NEUTral:HARMonic? FETCh:CURRent:NEUTral:HARMonic? 46 MEASure:CURRent:NEUTral:HARMonic:PHASe? FETCh:CURRent:NEUTral:HARMonic:PHASe? 47

Measurement Subsystem (Frequency) 48

Subsystem Syntax 48 MEASure:FREQuency? FETCh:FREQuency? 48

Measurement Subsystem (Power) 49

Subsystem Syntax 49 MEASure:POWer? FETCh:POWer? 49 MEASure:POWer:AC? FETCh:POWer:AC? 49 MEASure:POWer:AC:APParent? FETCh:POWer:AC:APParent? 50 MEASure:POWer:AC:REACtive? FETCh:POWer:AC:REACtive? 50 MEASure:POWer:AC:PFACtor? FETCh:POWer:AC:PFACtor? 50 MEASure:POWer:AC:TOTal? FETCh:POWer:AC:TOTal? 51

Measurement Subsystem (Voltage) 52

Subsystem Syntax 52 MEASure:VOLTage? FETCh:VOLTage? 52 MEASure:VOLTage:AC? FETCh:VOLTage:AC? 52 MEASure:VOLTage:ACDC? FETCh:VOLTage:ACDC? 53 MEASure:VOLTage:HARMonic? FETCh:VOLTage:HARMonic? 53 MEASure:VOLTage:HARMonic:PHASe? FETCh:VOLTage:HARMonic:PHASe? 54 MEASure:VOLTage:HARMonic:THD? FETCh:VOLTage:HARMonic:THD? 54

Output Subsystem 55

Subsystem Syntax 55 OUTPut 55 OUTPut:COUPling 56 OUTPut:DFI 56 OUTPut:DFI:SOURce 56 OUTPut:IMPedance 57 OUTPut:IMPedance:REAL 57 OUTPut:IMPedance:REACtive 57 OUTPut:PON:STATe 58 OUTPut:PROTection:CLEar 58 OUTPut:PROTection:DELay 58 OUTPut:RI:MODE 59 OUTPut:TTLTrg 59 OUTPut:TTLTrg:SOURce 59

Sense Subsystem 60

Subsystem Syntax 60 SENSe:CURRent:ACDC:RANGe 60 SENSe:SWEep:OFFSet:POINts 61 SENSe:SWEep:TINTerval 61 SENSe:WINDow 61

Source Subsystem (Current) 62

Subsystem Syntax 62 CURRent 62 CURRent:PEAK 63 CURRent:PEAK:MODE 63

CURRent:PEAK:TRIGgered 64 CURRent:PROTection:STATe 64

Source Subsystem (Frequency) 65

Subsystem Syntax 65 FREQuency 65 FREQuency:MODE 65 FREQuency:SLEW 66 FREQuency:SLEW:MODE 66 FREQency:SLEW:TRIGgered 66 FREQuency:TRIGgered 67

Source Subsystem (Function) 68

Subsystem Syntax 68 FUNCtion 68 FUNCtion:MODE 69 FUNCtion:TRIGgered 69 FUNCtion:CSINusoid 70

Source Subsystem (List) 71

Subsystem Syntax 71 LIST:COUNt 72 LIST:CURRent 72 LIST:CURRent:POINts? 72 LIST:DWELl 73 LIST:DWELl:POINts? 73 LIST:FREQuency 73 LIST:FREQuency:POINts? 74 LIST:FREQuency:SLEW 74 LIST:FREQuency:SLEW:POINts? 74 LIST:PHASe 74 LIST:PHASe:POINts? 75 LIST:SHAPe 75 LIST:SHAPe:POINts? 75 LIST:STEP 76 LIST:TTLTrg 76 LIST:TTLTrg:POINts? 76 LIST:VOLTage 77 LIST:VOLTage:POINts? 77 LIST:VOLTage:SLEW 77 LIST:VOLTage:SLEW:POINts? 78 LIST:VOLTageOFFSet 78 LIST:VOLTage:OFFSet:POINts? 78 LIST:VOLTage:OFFSet:SLEW 79 LIST:VOLTage:OFFSet:SLEW:POINts? 79

Source Subsystem (Phase) 80

PHASe 80 PHASe:MODE 81 PHASe:TRIGgered 81

Source Subsystem (Pulse) 82

Subsystem Syntax 82 PULSe:COUNt 82 PULSe:DCYCle 82 PULSe:HOLD 83 PULSe:PERiod 84 PULSe:WIDTh 84

Source Subsystem (Voltage) 85

Subsystem Syntax 85 VOLTage 86 VOLTage:TRIGgered 86 VOLTage:MODE 87 VOLTage:OFFSet 87 VOLTage:OFFSet:MODE 88 VOLTage:OFFSet:TRIGgered 88 VOLTage:OFFSet:SLEW 89 VOLTage:OFFSet:SLEW:MODE 89 VOLTage:OFFSet:SLEW:TRIGgered 90 VOLTage:PROTection 90 VOLTage:PROTection:STATe 90 VOLTage:RANGe 91 VOLTage:SENSe:DETector VOLTage:ALC:DETector 91 VOLTage:SENSe:SOURce VOLTage:ALC:SOURce 92 VOLTage:SLEW 92 VOLTage:SLEW:MODE 93 VOLTage:SLEW:TRIGgered 93

Status Subsystem 94

Subsystem Syntax 94 STATus:PRESet 94 Bit Configuration of Operation Status Registers 95 STATus:OPERation? 95 STATus:OPERation:CONDition? 95 STATus:OPERation:ENABle 95 STATus:OPERation:NTRansition STATus:OPERation:PTRansition 96 Bit Configuration of Questionable Status Registers 97 STATus:QUEStionable? 97 STATus:QUEStionable:CONDition? 97 STATus:QUEStionable:ENABle 98 STATus:QUEStionable:NTRansition STATus:QUEStionable:PTRansition 98 Bit Configuration of Questionable Instrument Summary Registers 99 STATus:QUEStionable:INSTrument:ISUMmary? 99 STATus:QUEStionable:INSTrument:ISUMmary:CONDition? 100 STATus:QUEStionable:INSTrument:ISUMmary:ENABle 100 STATus:QUEStionable:INSTrument:ISUMmary:NTR STATus:QUEStionable:INSTrument:ISUMmary:PTR101

System Commands 102

Subsystem Syntax 102 SYSTem:CONFigure 102 SYSTem:CONFigure:NOUTputs 103 SYSTem:ERRor? 103 SYSTem:VERSion? 103 SYSTem:LANGuage 104 SYSTem:LOCal 104 SYSTem:REMote 104 SYSTem:RWLock 104

Trace Subsystem 105

Subsystem Syntax 105 TRACe DATA 105 TRACe:CATalog? DATA:CATalog? 106 TRACe:DEFine DATA:DEFine 106 TRACe:DELete DATA:DELete 106

Trigger Subsystem 107

Subsystem Syntax 107 ABORt 108 INITiate:SEQuence INITiate:NAME 108 INITiate:CONTinuous:SEQuence INITiate:CONTinuous:NAME 109 TRIGger 109 TRIGger:DELay 109 TRIGger:SOURce 110 TRIGger:SEQuence2:SOURce TRIGger:SYNChronize:SOURce 110 TRIGger:SEQuence2:PHASe TRIGger:SYNCHronize:PHASe 111 TRIGger:SEQuence3 TRIGger:ACQuire 111 TRIGger:SEQuence3:SOURce TRIGger:ACQuire:SOURce 112 TRIGger:SEQuence1:DEFine TRIGger:SEQuence2:DEFine TRIGger:SEQuence3:DEFine 112

Common Commands 113

Common Commands Syntax 113 *CLS 114 *ESE 114 Bit Configuration of Standard Event Status Enable Register 114 *ESR? 115 *IDN? 115 *OPC 115 *OPT? 116 *PSC 116 *RCL 116 *RST 117 *SAV 118 *SRE 118 *STB? 119 Bit Configuration of Status Byte Register 119 *TRG 119 *TST? 119 *WAI 120

4 - PROGRAMMING EXAMPLES 121

Introduction 121 Programming the Output 121

Power-on Initialization 121 Enabling the Output 121 AC Voltage and Frequency 122 Voltage and Frequency Slew Rates 123 Waveform Shapes 123 Individual Phases (HP 6834B only) 124 Current Limit 125 DC Output (HP 6811B/6812B/6813B only) 126 Coupled Commands 127

Programming Output Transients 128

Transient System Model 129 Step and Pulse Transients 130 List Transients 131

Triggering Output Changes 132

SCPI Triggering Nomenclature 132 Output Trigger System Model 133 Initiating the Output Trigger System 134

Selecting the Output Trigger Source 134 Specifying a Trigger Delay 135 Synchronizing Output Changes to a Reference Phase Angle 135 Generating Output Triggers 136 Specifying a Dwell Time for Each List Point 136

Making Measurements 137

Voltage and Current Measurements 137 Power Measurements 138 Harmonic Measurements 138 Simultaneous Output Phase Measurements (HP 6834B only) 138 Returning Voltage and Current Data From the Data Buffer 139 Regulatory-Compliant Measurement of Quasi-Stationary Harmonics 139

Triggering Measurements 139

SCPI Triggering Nomenclature 139 Measurement Trigger System Model 139 Initiating the Measurement Trigger System 140 Selecting the Measurement Trigger Source 140 Generating Measurement Triggers 141 Controlling the Instantaneous Voltage and Current Data Buffers 141

Programming the Status Registers 142

Power-On Conditions 142 Operation Status Group 142

Questionable Status Group 145

Questionable Instrument Isummary Status Group 145 Standard Event Status Group 146 Status Byte Register 147 Examples 147

Programming the Trigger In and Trigger Out BNC Connectors 148

Trigger In BNC 148 Trigger Out BNC 149

Remote Inhibit and Discrete Fault Indicator 149

Remote Inhibit (RI) 150 Discrete Fault Indicator (DFI) 150

SCPI Command Completion 150

A - SCPI COMMAND TREE 151

Command Syntax 151

B - SCPI CONFORMANCE INFORMATION 155

SCPI Confirmed Commands 155 Non SCPI Commands 156

C - ERROR MESSAGES 157

Error Number List 157

D - ELGAR MODEL 9012 COMPATIBILITY 161

Elgar Model 9012 Plug-in Programmer Compatibility 161 Main Board W1 Jumper Option Emulation 161 Syntax Compatibility 161 Status Model 162 Power-on State 162 Protection 163

Front Panel Operation 163

System Keys 163 Function Keys 163 Entry Keys 164

E9012 Language Command Summary 164

E - IEC MODE COMMAND SUMMARY 167

Introduction 167

Using the SENSe:CURRent:ACDC:RANGe command 167 Command Syntax 168 CALCulate:INTegral:TIME 169 CALCulate:SMOothing 169 CALCulate:LIMit:UPPer 170 FORMat 171 FORMat:BORDer 172 MEASure:ARRay:CURRent:HARMonic? 173 MEASure:ARRay:VOLTage:FLUCtuations:ALL? 174 MEASure:ARRay:VOLTage:FLUCtuations:FLICker? 176 MEASure:ARRay:VOLTage:FLUCtuations:PST? 177 SENSe:CURRent:PREFerence 178 SENSe:WINDow 178 SYSTem:CONFigure 179

INDEX 181

General Information - 1

General Information

About this Guide

This manual contains programming information for the HP 6811B, 6812B, 6813B, 6814B, 6834B, 6843A AC Power Solutions. These units will be referred to as "ac sources" throughout this manual. You will find the following information in the rest of this guide:

Chapter 1 Introduction to this guide. Chapter 2 Introduction to SCPI messages structure, syntax, and data formats. Chapter 3 Dictionary of SCPI commands. Chapter 4 Introduction to programming the ac source with SCPI commands. Appendix A SCPI command tree. Appendix B SCPI conformance information. Appendix C Error messages Appendix D Elgar Model 9012 plug-in programmer compatibility Appendix E IEC mode SCPI commands

Earlier AC Source Models

With the exception of some minor readback specification differences, information in this manual also applies to the following earlier ac source models:

Information about this

current model

HP 6811B HP 6811A AC Power Source/Analyzer HP 6812B HP 6812A AC Power Source/Analyzer

HP 6813B HP 6813A AC Power Source/Analyzer

also applies to the following earlier

models:

HP 6841A Harmonic/Flicker Test System in normal mode

HP 6842A Harmonic/Flicker Test System in normal mode

Documentation Summary

The following documents that are related to this Programming Guide have additional helpful information for using the ac source.

u Quick Start Guide. Information on how to quickly get started using the ac source. u User's Guide. Includes specifications and supplemental charactaristics, how to use the front

panel, how to connect to the instrument, and calibration procedures.

u Quick Reference Card. Designed as a memory jogger for front panel and HP-IB operation. u HP 14761A, HP 14762A, HP 14763A User's Guides are shipped along with the specific software

application and with HP 6843A units only.

1 - General Information

External References

SCPI References

The following documents will assist you with programming in SCPI:

u Beginner's Guide to SCPI. HP Part No. H2325-90001. Highly recommended for anyone who has

not had previous experience programming with SCPI.

u Tutorial Description of the Hewlett-Packard Interface Bus. HP Part No. 5952-0156. Highly

recommended for those not familiar with the IEEE 488.1 and 488.2 standards.

To obtain a copy of the above documents, contact your local HP Sales and Support Office.

HP-IB References

The most important HP-IB documents are your controller programming manuals - HP BASIC, HP-IB Command Library for MS DOS, etc. Refer to these for all non-SCPI commands (for example: Local Lockout).

The following are two formal documents concerning the HP-IB interface:

u ANSI/IEEE Std. 488.1-1987 IEEE Standard Digital Interface for Programmable Instrumentation.

Defines the technical details of the HP-IB interface. While much of the information is beyond the need of most programmers, it can serve to clarify terms used in this guide and in related documents.

u ANSI/IEEE Std. 488.2-1987 IEEE Standard Codes, Formats, Protocols, and Common

Commands. Recommended as a reference only if you intend to do fairly sophisticated

programming. Helpful for finding precise definitions of certain types of SCPI message formats, data types, or common commands.

The above two documents are available from the IEEE (Institute of Electrical and Electronics Engineers), 345 East 47th Street, New York, NY 10017, USA.

HP VXIplug&play Power Products Instrument Drivers

HP VXIplug&play Power Products instrument drivers for Microsoft Windows 95 and Windows NT are now available on the Web at http://www.hp.com/go/drivers. These instrument drivers provide a highlevel programming interface to your HP Power Products instrument. HP VXIplug&play instrument drivers are an alternative to programming your instrument with SCPI command strings. Because the instrument driver's function calls work together on top of the VISA I/O library, a single instrument driver can be used with multiple application environments.

Supported Applications

 HP VEE  Microsoft Visual BASIC  Microsoft Visual C/C++  Borland C/C++  National Instruments LabVIEW  National Instruments LabWindows/CVI

System Requirements

General Information - 1

The HP VXIplug&play Power Products instrument driver complies with the following:

 Microsoft Windows 95  Microsoft Windows NT 4.0  HP VISA revision F.01.02  National Instruments VISA 1.1

Downloading and Installing the Driver

NOTE: Before installing the HP VXIplug&play instrument driver, make sure that you have one of

the supported applications installed and running on your computer.

1. Access Hewlett-Packard's Web site at http://www.hp.com/go/drivers.

2. Select the instrument for which you need the driver.

3. Click on the driver, either Windows 95 or Windows NT, and download the executable file to your PC.

4. Locate the file that you downloaded from the Web. From the Start menu select Run <path>:\hpxxxx.exe - where <path> is the directory path where the file is located, and hpxxxx is the instrument driver that you downloaded .

5. Follow the directions on the screen to install the software. The default installation selections will work in most cases. The readme.txt file contains product updates or corrections that are not documented in the on-line help. If you decide to install this file, use any text editor to open and read it.

6. To use the VXIplug&play instrument driver, follow the directions in the HP VXIplug&play online help under “Introduction to Programming”.

When you have finished installing the software, the HP VXIplug&play instrument driver files will be at the following location on your hard drive:

On Windows 95 computers, files are installed in this directory

On Windows NT computers, files are installed in this directory

Accessing Online Help

A comprehensive online programming reference is provided with the driver. It describes how to get started using the instrument driver with HP VEE, LabVIEW, and LabWindows. It includes complete descriptions of all function calls as well as example programs in C/C++ and Visual BASIC.

 To access the online help when you have chosen the default Vxipnp start folder, click on the Start button and select Programs | Vxipnp | HPxxxx Help (32-bit).

- where hpxxxx is the instrument driver.

Introduction to Programming - 2

Introduction to Programming

HP-IB Capabilities of the AC Source

All ac source functions except for setting the HP-IB address are programmable over the HP-IB. The IEEE 488.2 capabilities of the ac source are listed in the appendix A of the User's Guide.

HP-IB Address

The ac source operates from an HP-IB address that is set from the front panel. To set the HP-IB address, press the Address key on the front panel and enter the address using the Entry keys.

RS-232 Capabilities of the AC Source

The ac source provides an RS-232 programming interface, which is activated by commands located under the front panel Address key. All SCPI and E9012 commands are available through RS-232 programming. When the RS-232 interface is selected, the HP-IB interface is disabled.

The EIA RS-232 Standard defines the interconnections between Data Terminal Equipment (DTE) and Data Communications Equipment (DCE). The ac source is designed to be a DTE. It can be connected to another DTE such as a PC COM port through a null modem cable.

NOTE: The RS-232 settings in your program must match the settings specified in the front panel

Address menu. Press the front panel Address key if you need to change the settings.

RS-232 Data Format

The RS-232 data is a 11-bit word with one start bit and two stop bits. The number of start and stop bits is not programmable. The following parity options are selectable using the front panel Address key:

EVEN Seven data bits with even parity ODD Seven data bits with odd parity MARK Seven data bits with mark parity (parity is always true) SPACE Seven data bits with space parity (parity is always false) NONE Eight data bits without parity

Parity options are stored in non-volatile memory.

Baud Rate

The front panel Address key lets you select one of the following baud rates, which is stored in nonvolatile memory: 300 600 1200 2400 4800 9600

2 - Introduction to Programming

RS-232 Programming Example

The following program illustrates how to program the ac source using RS-232 to set the output voltage and frequency and to read back the model number and output voltage. The program was written to run on any controller using Microsoft QBasic.

NOTE: The ac source must be configured for RS232 and the same baud rate and parity as the

controller.

‘ Program to write and read via RS232 ‘ Configure serial port for: ‘ 9600 baud ‘ 7 bit data ‘ 2 stop bits ‘ Ignore request to send ‘ Ignore carrier detect ‘ Even parity ‘ Needed with Vectra basic, ignored with QBasic ‘ Send line feed ‘ Reserve 1000 character buffer for serial I/O ‘ DECLARE FUNCTION gets$ () ‘ Function to read string from ac source CLS ‘ Clears screen LOCATE 1, 1 ‘ Position curser at top left ‘ Configure Com1 Port OPEN “com1:9600,e,7,2,rs,cd,pe,lf” FOR RANDOM AS #1 LEN = 1000 PRINT #1, “*RST” ‘ Resets the ac source PRINT #1, “VOLT 60” ‘ Set voltage to 60 volts PRINT #1, “FREQ 50” ‘ Set frequency to 50 hertz PRINT #1, “OUTPUT ON” ‘ Turn on the output PRINT #1, “*IDN?” ‘ Query the ac source identification string PRINT gets$ ‘ Go to gets$ Function and print data returned PRINT #1, MEAS”VOLT?”; volt ‘ Query the ac source voltage Volt = VAL (gets$) ‘ Convert gets$ string to a value PRINT gets$ ‘ Print the value of the voltage END ‘ End of main program

FUNCTION gets$ ‘ Get a new line feed terminated string from device #1 C$ = “” ‘ Set C$ to null WHILE c$ <> CHR$ (10) ‘ Set loop to stop at Line Feed

C$ = INPUT$ (1, #1) ‘ Read 1 bit into file #1

Resp$ = resp$ + c$ ‘ Concantenate bit with previous bits WEND ‘ End of WHILE loop gets$ = resp$ ‘ Assign response to gets$ END FUNCTION

RS-232 Troubleshooting

If you are having trouble communicating over the RS-232 interface, check the following:

♦ The computer and the ac source must be configured for the same baud rate, parity, and number

of data bits. Note that the ac source is configured for 1 start bit and 2 stop bits (these values are fixed).

♦ The correct interface cables or adaptors must be used, as described under "RS-232 Connector"

in the User's Guide. Note that even if the cable has the proper connectors for your system, the internal wiring may be incorrect.

♦ The interface cable must be connected to the correct serial port on your computer (COM1,

COM2, etc.).

Introduction to Programming - 2

Introduction to SCPI

SCPI (Standard Commands for Programmable Instruments) is a programming language for controlling instrument functions over the HP-IB. SCPI is layered on top of the hardware-portion of IEEE 488.2. The same SCPI commands and parameters control the same functions in different classes of instruments. For example, you would use the same DISPlay command to control the ac source display and the display of a SCPI-compatible multimeter.

Conventions Used in This Guide

Angle brackets < > Items within angle brackets are parameter abbreviations. For example,

<NR1> indicates a specific form of numerical data.

Vertical bar | Vertical bars separate alternative parameters. For example, NORM |

TEXT indicates that either "TEXT" or "NORM" can be used as a parameter.

Square Brackets [ ] Items within square brackets are optional. The representation

[SOURce:]LIST means that SOURce: may be omitted.

Braces { } Braces indicate parameters that may be repeated zero or more times. It is

used especially for showing arrays. The notation <A>{<,B>} shows that parameter "A" must be entered, while parameter "B" may be omitted or may be entered one or more times.

Computer font Computer font is used to show program lines in text. TRIGger:DELay .5

shows a program line.

Types of SCPI Commands

SCPI has two types of commands, common and subsystem.

u Common commands generally are not related to specfic operation but to controlling overall ac

source functions, such as reset, status, and synchronization. All common commands consist of a three-letter nmemonic preceded by an asterisk:*RST*IDN?*SRE 8

u Subsystem commands perform specific ac source functions. They are organized into an inverted

tree structure with the "root" at the top. Some are single commands while others are grouped within specific subsystems.

Refer to appendix A for the ac source SCPI tree structure.

Types of SCPI Messages

There are two types of SCPI messages, program and response.

u A program message consists of one or more properly formatted SCPI commands sent from the

controller to the ac source. The message, which may be sent at any time, requests the ac source to perform some action.

u A response message consists of data in a specific SCPI format sent from the ac source to the

controller. The ac source sends the message only when commanded by a program message called a "query."

2 - Introduction to Programming

:OUTPut

:DFI

:PROTection

ROOT

:CLEar

:STATus

:CONDition?

:OPERation

[:EVEN]

[:STATe]

:COUPling

The SCPI Command Tree

As previously explained, the basic SCPI communication method involves sending one or more properly formatted commands from the SCPI command tree to the instrument as program messages. The following figure shows a portion of a subsystem command tree, from which you access the commands located along the various paths (you can see the complete tree in appendix A).

[:STATe]

:SOURce

:DELay

Figure 2-1. Partial Command Tree

The Root Level

Note the location of the ROOT node at the top of the tree. Commands at the root level are at the top level of the command tree. The SCPI interface is at this location when:

u the ac source is powered on u a device clear (DCL) is sent to the ac source u the SCPI interface encounters a message terminator u the SCPI interface encounters a root specifier

Active Header Path

In order to properly traverse the command tree, you must understand the concept of the active header path. When the ac source is turned on (or under any of the other conditions listed above), the active path is at the root. That means the SCPI interface is ready to accept any command at the root level, such as OUTPut or STATe.

If you enter OUTPut, the active header path moves one colon to the right . The interface is now ready to accept :STATe, :COUPling, :DFI, or :PROTection as the next header. You must include the colon, because it is required between headers.

If you now enter :PROTection, the active path again moves one colon to the right. The interface is now ready to accept either :CLEar or :DELay as the next header.

Introduction to Programming - 2

If you now enter :CLEar, you have reached the end of the command string. The active header path remains at :CLEar. If you wished, you could have entered :CLEar;DELay 20 and it would be accepted as a compound message consisting of:

OUTPut:PROTection:CLEAr and OUTPut:PROTection:DELay 20.

The entire message would be:

OUTPut:PROTection:CLEar;DELay 20

The message terminator after DELay 20 returns the path to the root.

The Effect of Optional Headers

If a command includes optional headers, the interface assumes they are there. For example, if you enter OUTPut OFF, the interface recognizes it as OUTPut:STATe OFF. This returns the active path to the root (:OUTPut). But if you enter |OUTPut:STATe OFF,| then the active path remains at :STATe. This allows you to send

OUTPut:STATe OFF;PROTection:CLEar

in one message. If you tried to send

OUTPut OFF;PROTection:CLEar

the header path would return to :OUTPut instead of :PROTection. The optional header [SOURce] preceeds the current, frequency, function, phase, pulse, list, and voltage

subsystems. This effectively makes :CURRent, :FREQuency, :FUNCtion, :PHASe, :PULse, :LIST, and :VOLTage root-level commands.

Moving Among Subsystems

In order to combine commands from different subsystems, you need to be able to restore the active path to the root. You do this with the root specifier (:). For example, you could clear the output protection and check the status of the Operation Condition register as follows:

OUTPut:PROTection:CLEAr STATus:OPERation:CONDition?

Because the root specifier resets the command parser to the root, you can use the root specifier and do the same thing in one message:

OUTPut:PROTection:CLEAr;:STATus:OPERation:CONDition?

The following message shows how to combine commands from different subsystems as well as within the same subsystem:

VOLTage:LEVel 70;PROTection 80;:CURRent:LEVel 3;PROTection:STATe ON

Note the use of the optional header LEVel to maintain the correct path within the voltage and current subsystems and the use of the root specifier to move between subsytems.

NOTE: The "Enhanced Tree Walking Implementation" given in appendix A of the IEEE 488.2

standard is not implemented in the ac source.

Including Common Commands

2 - Introduction to Programming You can combine common commands with system commands in the same message. Treat the common

command as a message unit by separating it with a semicolon (the message unit separator). Common commands do not affect the active header path; you may insert them anywhere in the message.

VOLTage:TRIGger 7.5;INITialize;*TRG OUTPut OFF;*RCL 2;OUTPut ON

Using Queries

Observe the following precautions with queries:

u Set up the proper number of variables for the returned data. u Read back all the results of a query before sending another command to the ac source.

Otherwise a Query Interrupted error will occur and the unreturned data will be lost.

Coupled Commands

When commands are coupled it means that the value sent by one command is affected by the settings of the other commands. The following commands are coupled in the ac source:

u the voltage, voltage offset, and function shape commands u the step, pulse, and list commands that control output voltages, voltage offsets, and function

shapes

u the pulse commands that program the width, duty cycle, period, and the hold parameter u the voltage range and current limit commands in some ac source models

As explained later in chapter 4, the order in which data is sent by these coupled commands can be important when more than one parameter is changed.

Structure of a SCPI Message

SCPI messages consist of one or more message units ending in a message terminator. The terminator is not part of the syntax, but implicit in the way your programming language indicates the end of a line (such as a newline or end-of-line character).

The Message Unit

The simplest SCPI command is a single message unit consisting of a command header (or keyword) followed by a message terminator.

ABORt<newline> VOLTage?<newline>

The message unit may include a parameter after the header. The parameter usually is numeric, but it can be a string:

VOLTage 20<newline> VOLTage MAX<newline>

Introduction to Programming - 2

Data

Headers

Header Separator

Message Unit Separators

Query Indicator

Message Terminator

Root Specifier

<NL>

VOLT:LEV 80

PROT 88

;;:

CURR?

Combining Message Units

The following command message is briefly described here, with details in subsequent paragraphs.

Message Unit

Figure 2-2. Command Message Structure

The basic parts of the above message are:

Message Component Example

Headers VOLT LEV PROT CURR Header Separator The colon in VOLT:LEV Data 8088 Data Separator The space in VOLT 80 and PROT 88 Message Units VOLT:LEV 80 PROT 88 CURR? Message Unit Separator The semicolons in VOLT:LEV 80; and PROT 88; Root Specifier The colon in PROT 88;:CURR? Query Indicator The question mark in CURR? Message Terminator The <NL> (newline) indicator. Terminators are not part of the SCPI syntax

Headers

Headers are instructions recognized by the ac source. Headers (which are sometimes known as "keywords") may be either in the long form or the short form.

Long Form Short Form

The SCPI interface is not sensitive to case. It will recognize any case mixture, such as TRIGGER, Trigger, TRIGger.

The header is completely spelled out, such as VOLTAGE, STATUS, and DELAY. The header has only the first three or four letters, such as VOLT, STAT, and DEL.

NOTE: Short form headers result in faster program execution.

2 - Introduction to Programming

Header Convention

Header Separator

Optional Headers

In the command descriptions in chapter 3 of this manual, headers are emphasized with boldface type. The proper short form is shown in upper-case letters, such as DELay.

If a command has more than one header, you must separate them with a colon (VOLT:PROT OUTPut:RELay:POLarity).

The use of some headers is optional. Optional headers are shown in brackets, such as OUTPut[:STATe] ON. As previously explained under "The Effect of Optional Headers", if you combine two or more message units into a compound message, you may need to enter the optional header.

Query Indicator

Following a header with a question mark turns it into a query (VOLTage?, VOLTage:PROTection?). If a query contains a parameter, place the query indicator at the end of the last header (VOLTage:PROTection? MAX).

Message Unit Separator

When two or more message units are combined into a compound message, separate the units with a semicolon (STATus:OPERation?;QUEStionable?).

Root Specifier

When it precedes the first header of a message unit, the colon becomes the root specifier. It tells the command parser that this is the root or the top node of the command tree. Note the difference between root specifiers and header separators in the following examples:

OUTPut:PROTection:DELay .1 :OUTPut:PROTection:DELay .1 OUTPut:PROTection:DELay .1;:VOLTage 12.5

All colons are header separators Only the first colon is a root specifier Only the third colon is a root specifier

NOTE: You do not have to preceed root-level commands with a colon; there is an implied colon

in front of every root-level command.

Message Terminator

A terminator informs SCPI that it has reached the end of a message. Three permitted messages terminators are:

u newline (<NL>), which is ASCII decimal 10 or hex 0A. u end or identify (<END>) u both of the above (<NL><END>).

In the examples of this guide, there is an assumed message terminator at the end of each message. If the terminator needs to be shown, it is indicated as <NL> regardless of the actual terminator character.

Introduction to Programming - 2

SCPI Data Formats

All data programmed to or returned from the ac source is ASCII. The data may be numerical or character string.

Numerical Data Formats

Symbol Data Form

Talking Formats

<NR1>

<Bool>

Digits with an implied decimal point assumed at the right of the least-significant digit. Examples: 273

Digits with an explicit decimal point. Example: .0273 Digits with an explicit decimal point and an exponent. Example: 2.73E+2 Boolean Data. Example: 0 | 1 or OFF | ON (0 = OFF; 1 = ON) Listening Formats Extended format that includes <NR1>, <NR2> and <NR3>. Examples: 273273. 2.73E2 Expanded decimal format that includes <NRf> and MINMAX. Examples: 273 73.2

.73E2 MAX. MIN and MAX are the minimum and maximum limit values that are implicit in the range specification for the parameter.

Boolean Data. Example: 0 | 1

Suffixes and Multipliers

Class Suffix Unit Unit with Multiplier

Current A ampere MA (milliampere)

Amplitude V volt MV (millivolt)

Time S second MS (millisecond)

Frequency HZ Hertz KHZ (kilohertz)

Common Multipliers

1E3 K kilo 1E-3 M milli 1E-6 U micro

Character Data

Character strings returned by query statements may take either of the the following forms, depending on the length of the returned string:

<SRD>

Character Response Data. Permits the return of character strings. Arbitrary ASCII Response Data. Permits the return of undelimited 7-bit ASCII. This data type

has an implied message terminator. String Response Data. Returns string parameters enclosed in double quotes.

2 - Introduction to Programming

System Considerations

The remainder of this chapter addresses some system issues concerning programming. These are ac source addressing and the use of the following types of HP-IB system interfaces:

u HP Vectra PC controller with HP 82335A HP-IB Interface Command Library u IBM PC controller with National Instuments GPIB-PCII Interface/Handler u HP controller with HP BASIC Language System

Assigning the HP-IB Address in Programs

The ac source address cannot be set remotely. It must be set from the front panel. Once the address is set, you can assign it inside programs. The following examples assume that the HP-IB select code is 7, and the ac source will be assigned to the variable ACS.

1070 ACS=706 !HP82335A Interface 1070 ASSIGN @ACS TO 706 !HP BASIC Interface

For systems using the National Instruments DOS driver, the address is specified in the software configuration program (IBCONFIG.EXE) and assigned a symbolic name. The address then is referenced only by this name within the application program (see the National Instruments GP-IB documentation).

Types of DOS Drivers

The HP 82335A and National Instruments GP-IB are two popular DOS drivers.Each is briefly described here. See the software documention supplied with the driver for more details.

HP 82335A Driver

For GW-BASIC programming, the HP-IB library is implemented as a series of subroutine calls. To access these subroutines, your application program must include the header file SETUP.BAS, which is part of the DOS driver software.

SETUP.BAS starts at program line 5 and can run up to line 999. Your application programs must begin at line 1000. SETUP.BAS has built-in error checking routines that provide a method to check for HP-IB errors during program execution. You can use the error-trapping code in these routines or write your own code using the same variables as used by SETUP.BAS.

National Instruments GP-IB Driver

Your program must include the National Instruments header file DECL.BAS. This contains the initialization code for the interface. Prior to running any applications programs, you must set up the interface with the configuration program (IBCONF.EXE).

Your application program will not include the ac source symbolic name and HP-IB address. These must be specified during configuration (when you run IBCONF.EXE). Note that the primary address range is from 0 to 30 but any secondary address must be specified in the address range of 96 to 126. The instrument expects a message termination on EOI or line feed, so set EOI w/last byte of Write. It is also recommended that you set Disable Auto Serial Polling.

All function calls return the status word IBSTA%, which contains a bit (ERR) that is set if the call results in an error. When ERR is set, an appropriate code is placed in variable IBERR%. Be sure to check IBSTA% after every function call. If it is not equal to zero, branch to an error handler that reads IBERR% to extract the specific error.

Introduction to Programming - 2

Error Handling

If there is no error-handling code in your program, undetected errors can cause unpredictable results. This includes "hanging up" the controller and forcing you to reset the system. Both of the above DOS drivers have routines for detecting program execution errors.

Important Use error detection after every call to a subroutine.

HP BASIC Controllers

The HP BASIC Programming Language provides access to HP-IB functions at the operating system level. This makes it unnecessary to have the header files required in front of DOS applications programs. Also, you do not have to be concerned about controller "hangups" as long as your program includes a timeout statement. Because the ac source can be programmed to generate SRQ on errors, your program can use an SRQ service routine for decoding detected errors. The detectable errors are listed in Appendix C.

Language Dictionary - 3

Language Dictionary

Introduction

This section gives the syntax and parameters for all the IEEE 488.2 SCPI commands and the Common commands used by the ac sources when operating in Normal mode. It is assumed that you are familiar with the material in chapter 2 "Introduction to Programming". Because the SCPI syntax remains the same for all programming languages, the examples given for each command are generic.

Syntax Forms

Parameters

Models

Phases

Related Commands

Order of Presentation

Syntax definitions use the long form, but only short form headers (or "keywords") appear in the examples. Use the long form to help make your program selfdocumenting.

Most commands require a parameter and all queries will return a parameter.The range for a parameter may vary according to the model of ac source. Parameters for all models are listed in the Specifications table in the User’s Guide.

If a command only applies to specific models, those models are listed in the <Model> Only entry. If there is no <Model> Only entry, the command applies to all models.

If a command can apply to individual phases of an , the entry Phase Selectable will appear in the command description.

Where appropriate, related commands or queries are included. These are listed because they are either directly related by function, or because reading about them will clarify or enhance your understanding of the original command or query.

The dictionary is organized as follows:

u Subsystem commands, arranged by subsystem u IEEE 488.2 common commands

3 - Language Dictionary

Subsystem Commands

Subsystem commands are specific to functions. They can be a single command or a group of commands. The groups are comprised of commands that extend one or more levels below the root. The description of common commands follows the description of the subsystem commands.

The subsystem command groups are listed in alphabetical order and the commands within each subsystem are grouped alphabetically under the subsystem. Commands followed by a question mark (?) take only the query form. When commands take both the command and query form, this is noted in the syntax descriptions.

You will find the subsystem command groups discussed on the following pages:

Subsystem Page

Calibration Subsystem 29 Display Subsystem 34 Instrument Subsystem 35 Measurement Subsystem (Arrays) 37 Measurement Subsystem (Current) 42 Measurement Subsystem (Frequency) 48 Measurement Subsystem (Power) 49 Measurement Subsystem (Voltage) 52 Output Subsystem 55 Sense Subsystem 60 Source Subsystem (Current) 62 Source Subsystem (Frequency) 65 Source Subsystem (Function) 68 Source Subsystem (List) 71 Source Subsystem (Phase) 80 Source Subsystem (Pulse) 82 Source Subsystem (Voltage) 85 Status Subsystem 94 System Commands 102 Trace Subsystem 105 Trigger Subsystem 107 Common Commands 113

Language Dictionary - 3

Calibration Subsystem Commands

The commands in this subsystem allow you to do the following:

u Enable and disable the calibration mode u Change the calibration password u Calibrate the current and voltage output levels, and store new calibration constants in nonvolatile

memory.

Subsystem Syntax

CALibrate

:CURRent

:AC Begin ac current programming calibration sequence

:MEASure Begin current measurement calibration sequence :DATA <n> Input a calibration measurement :IMPedance Begin output impedance calibration sequence :LEVel <level> Advance to next calibration step (P1 | P2 | P3 | P4) :PASSword <n> Set calibration password :PWM

:FREQuency <n> Trim pulse width modulator frequency

:RAMP <n> Trim pulse width modulator ramp :SAVE Save new cal constants in non-volatile memory :STATE <bool> [,<n>] Enable or disable calibration mode :VOLTage

:AC Begin ac voltage calibration sequence

:DC Begin dc voltage calibration sequence

:OFFSet Begin offset voltage calibration sequence

:PROTection Begin voltage protection calibration sequence

:RTIMe Begin realtime voltage calibration sequence

CALibrate:CURRent:AC

Phase Selectable

This command can only be used in the calibration mode. It initiates the calibration of the ac current limit and metering circuits.

Command Syntax

Parameters

Examples

Related Commands

CALibrate:CURRent:AC None

CAL:CURR:AC

CAL:STAT CAL:SAV CAL:LEV

3 - Language Dictionary

CALibrate:CURRent:MEASure

HP 6811B, HP 6812B, HP 6813B, HP 6843A Only

This command is used to initiate the calibration of the current metering circuits and the peak current limit circuits. It can only be used in the calibration mode.

Command Syntax

Parameters

Examples

Related Commands

CALibrate:CURRent:MEASure None

CAL:CURR:MEAS

CAL:STAT CAL:SAV CAL:LEV

CALibrate:DATA

Phase Selectable

This command is only used in calibration mode. It enters a calibration value that you obtain by reading an external meter. You must first select a calibration level (with CALibrate:LEVel) for the value being entered. These constants are not stored in nonvolatile memory until they are saved with CALibrate:SAVE. If CALibrate:STATE OFF is programmed without a CALibrate:SAVE, the previous calibration constants are restored.

Command Syntax

Parameters

Unit

Examples

Related Commands

CALibrate:DATA <NRf> <external reading>

A (amperes) CAL:DATA 3222.3 MA CAL:DATA 5.000

CAL:STAT CAL:SAV

CALibrate:IMPedance

HP 6811B, HP 6812B, HP 6813B, HP 6843A Only

This command can only be used in calibration mode. It calibrates the output impedance circuits. The automatically performs the calibration and stores the impedance constant in nonvolatile memory. CALibrate:IMPedance is a sequential command that takes several seconds to complete.

Command Syntax

Parameters

Examples

Related Commands

CALibrate:IMPedance None

CAL:IMP

CAL:STAT CAL:SAV

CALibrate:LEVel

Phase Selectable

This command can only be used in calibration mode. It is used to advance to the next state in the calibration sequence.

Command Syntax

Parameters

Examples

Related Commands

CALibrate:LEVel <level> P1 | P2 | P3 | P4

CAL:LEV P2

CAL:STAT CAL:SAV

CALibrate:PASSword

Language Dictionary - 3

This command can only be used in calibration mode. It allows you to change the calibration password. A new password is automatically stored in nonvolatile memory and does not have to be stored with CALibrate:SAVE. If the password is set to 0, password protection is removed and the ability to enter the calibration mode is unrestricted.

Command Syntax

Parameters

Examples

Related Commands

CALibrate:PASSword <NRf> 0 (default)

CAL:PASS 6812 CAL:PASS 02.1997

CAL:STAT

CALibrate:PWM:FREQuency

HP 6811B, HP 6812B, HP 6813B Only

This command is only used during manufacture or repair. It trims the switching frequency of the power output stages. The numbers from 0 to 7 are internally mapped to 8 discrete frequencies.

Command Syntax

Parameters

Examples

Query Syntax

Returned Parameters

Related Commands

CALCulate:PWM:FREQuency <NRf> 0 through 7

CAL:PWM:FREQ 1

CALibrate:PWM:FREQuency? <NR1> CAL:PWM:RAMP

CALibrate:PWM:RAMP

HP 6811B, HP 6812B, HP 6813B Only

This command modulates the slope of voltage ramp driving the power output stages. Varying the ramp affects the harmonic distortion of the output. The argument is a number from 0 to 255. This command is only used during manufacture or repair of the .

Command Syntax

Parameters

Examples

Query Syntax

Returned Parameters

Related Commands

CALCulate:PWM:RAMP <NRf> 0 through 255

CAL:PWM:RAMP 100

CALibrate:PWM:RAMP? <NR1> CAL:PWM:FREQ

CALibrate:SAVE

This command can only be used in calibration mode. It saves any new calibration constants (after a current or voltage calibration procedure has been completed) in nonvolatile memory.

Command Syntax

Parameters

Examples

Related Commands

CALibrate:SAVE None

CAL:SAVE

CAL:CURR CAL:VOLT CAL:STAT

3 - Language Dictionary

CALibrate:STATe

This command enables and disables calibration mode. The calibration mode must be enabled before the will accept any other calibration commands. The first parameter specifies the enabled or disabled state. The second parameter is the password. It is required if the calibration mode is being enabled and the existing password is not 0. If the password is not entered or is incorrect, an error is generated and the calibration mode remains disabled. The query statement returns only the state, not the password.

Whenever the calibration state is changed from enabled to disabled, any new calibration constants are lost unless they have been stored with CALibrate:SAVE.

Command Syntax

Parameters *RST Value

Examples

Query Syntax

Returned Parameters

Related Commands

CALibrate:STATe <bool> [,<NRf>] 0 | 1 | OFF | ON [,<password>] OFF

CAL:STAT 1,6812 CAL:STAT OFF

CALibrate:STATe? <NR1> CAL:PASS CAL:SAVE

CALibrate:VOLTage:AC

Phase Selectable

This command can only be used in calibration mode. It initiates the calibration of the ac voltage programming and metering circuits.

Command Syntax

Parameters

Examples

Related Commands

CALibrate:VOLTage:AC None

CAL:VOLT:AC

CAL:SAVE CAL:STAT

CALibrate:VOLTage:DC

HP 6811B, HP 6812B, HP 6813B Only

This command can only be used in calibration mode. It initiates the calibration of the dc voltage programming circuits.

Command Syntax

Parameters

Examples

Related Commands

CALibrate:VOLTage:DC None

CAL:VOLT:DC

CAL:SAVE CAL:STAT

Language Dictionary - 3

CALibrate:VOLTage:OFFSet

HP 6811B, HP 6812B, HP 6813B Only

This command can only be used in calibration mode. It initiates the calibration of the offset voltage programming circuits.

Command Syntax

Parameters

Examples

Related Commands

CALibrate:VOLTage:OFFSet None

CAL:VOLT:OFFS

CAL:SAVE CAL:STAT CAL:LEV

CALibrate:VOLTage:PROTection

This command can only be used in calibration mode. It calibrates the overvoltage protection (OV) circuit. The automatically performs the calibration and stores the new OV constant in nonvolatile memory. CALibrate:VOLTage:PROTection is a sequential command that takes several seconds to complete.

Command Syntax

Parameters

Examples

Related Commands

CALibrate:VOLTage:PROTection None

CAL:VOLT:PROT

CAL:SAVE CAL:STAT

CALibrate:VOLTage:RTIMe

HP 6843A Only

This command can only be used in calibration mode. It calibrates the realtime voltage programming circuit.

Command Syntax

Parameters

Examples

Related Commands

CALibrate:VOLTage:RTIMe None

CAL:VOLT:RTIM

CAL:SAVE CAL:STAT

3 - Language Dictionary

Display Subsystem Commands

This subsystem programs the front panel display of the ac source.

Subsystem Syntax

DISPlay

[:WINDow]

[:STATe] <bool> Enable/disable front panel display

:MODE <mode> Set display mode (NORMal | TEXT)

:TEXT

[:DATA] <display string> Set text displayed in text mode

DISPlay

This command turns the front panel display on and off. It does not affect the annunciators.

Command Syntax

Parameters *RST Value

Examples

Query Syntax

Returned Parameters

Related Commands

DISPlay[:WINDow]:STATe <bool> 0 | 1 | OFF | ON ON

DISP:STAT 1, DISP:STAT OFF

DISPlay[:WINDow]:STATe? 0 | 1 DISP:MODE DISP:TEXT

DISPlay:MODE

This command sets the display to show either normal instrument functions, or to show a text message. Text messages are defined with DISPlay:TEXT:DATA.

Command Syntax

Parameters *RST Value

Examples

Query Syntax

Returned Parameters

Related Commands

DISPlay[:WINDow]:MODE <mode> NORMal | TEXT NORMal

DISP:MODE TEXT

DISPlay[:WINDow]:MODE? <CRD> DISP DISP:TEXT

DISPlay:TEXT

This command sets the character string that is displayed when the display mode is set to TEXT. The argument is a quoted string limited to upper case alpha characters and numbers. The display is capable of showing up to 14 characters. If the string exceeds the display capacity, it will be truncated.

Command Syntax

Parameters *RST Value

Examples

Query Syntax

Returned Parameters

Related Commands

DISPlay[:WINDow]:TEXT[:DATA] <display_string> <display_string> null string

DISP:TEXT “DO TEST1”

DISPlay[:WINDow]:TEXT? <SRD> (the last programmed string) DISP DISP:MODE

Language Dictionary - 3

Instrument Subsystem

This subsystem programs the three-phase output capability of the HP 6834B .

Subsystem Syntax

INSTrument

INSTrument:COUPle

HP 6834B Only

In a three-phase power source it is convenient to set parameters of all three output phases simultaneously with one programming command. When INST:COUP ALL is programmed, sending a command to any phase will result in that command being sent to all three phases.

NOTE: INSTrument:COUPle only affects the operation of subsequent commands. It does not by

itself immediately affect the 's output. The commands that are affected by INSTrument:COUPle are those with the designation: Phase Selectable.

INSTrument:COUPle has no affect on queries. There is no way to query more than one phase with a single command. Directing queries to individual phases is done with INSTrument:NSELect.

Command Syntax

Parameters *RST Value

Examples

Query Syntax

Returned Parameters

Related Commands

INSTrument:COUPle <phase> ALL | NONE ALL

INST:COUP ALL

INSTrument:COUPle? <CRD> INST:NSEL

3 - Language Dictionary

INSTrument:NSELect INSTrument:SELect

HP 6834B Only

These commands allow the selection of individual outputs in a three-phase model for subsequent commands or queries. Their operation is dependent on the setting of INSTrument:COUPle. If INST:COUP NONE is programmmed, then the phase selectable commands are sent only to the particular output phase set by INSTrument:NSELect. If INST:COUP ALL is programmed, then all commands are sent to all three output phases.

INSTrument:NSELect selects the phase by its number, while INSTrument:SELect references it by name. These commands also select which output phase returns data when a query is sent.

Command Syntax

Parameters *RST Value

Examples

Query Syntax

Returned Parameters

Related Commands

INSTrument:NSELect <NR1> INSTrument:SELect <output> For INST:NSEL 1 | 2 | 3 For INST:SEL OUTPut1 | OUTPut2 | OUTPut3 1 or OUTPut1

INST:NSEL 3 INST:SEL OUTP1

INSTrument:NSELect? <NR1> INST:COUP

Language Dictionary - 3

Measurement Subsystem (Arrays)

This subsystem lets you retrieve arrays containing measurements data. Only current and voltage measurements are stored in an array. Two measurement commands are available: MEASure and FETCh. MEASure triggers the acquisition of new data before returning the readings from the array. FETCh returns previously acquired data from the array.

Individual outputs of a three-phase source are specified by the setting of INSTrument:NSELect.

Subsystem Syntax

MEASure | FETCh

:ARRay

:CURRent

[:DC]? Returns the digitized instantaneous current :HARMonic

[:AMPLitude]? Returns amplitudes of the first 50 harmonics :PHASe? Returns phase angles of the first 50 harmonics

:NEUTral

[:DC]? Returns the neutral digitized instantaneous current (3-phase only) :HARMonic

[:AMPLitude]?Returns neutral current harmonic amplitude :PHASe? Returns neutral current harmonic phase

:VOLTage

[:DC]? Returns the digitized instantaneous voltage :HARMonic

[:AMPLitude]? Returns amplitudes of the first 50 harmonics :PHASe? Returns phase angles of the first 50 harmonics

MEASure:ARRay:CURRent? FETCh:ARRay:CURRent?

Phase Selectable

These queries return an array containing the instantaneous output current in amperes. The output voltage and current are digitized whenever a measure command is given or whenever an acquire trigger occurs. If digitization is caused by a measure command, the time interval between samples is determined by the output frequency. For frequencies greater than 45Hz, the time interval is 25 microseconds. If digitization is caused by an acquire trigger, the time interval is set by SENSe:SWEep:TINTerval, and the position of the trigger relative to the beginning of the data buffer is determined by SENSe:SWEep:OFFSet:POINts.

Query Syntax

Parameters

Examples

Returned Parameters

Related Commands

MEASure:ARRay:CURRent[:DC]? FETCh:ARRay:CURRent[:DC]? None

MEAS:ARR:CURR? FETC:ARR:CURR?

4096 NR3 values MEAS:ARR:VOLT?

3 - Language Dictionary

MEASure:ARRay:CURRent:HARMonic? FETCh:ARRay:CURRent:HARMonic?

Phase Selectable

These queries return an array of harmonic amplitudes of output current in rms amperes. The first value returned is the dc component, the second value is the fundamental frequency, and so on

up to the 50th harmonic. Harmonic orders can be measured up to the fundamental measurement bandwidth of the measurement system, which is 12.6kHz. Thus, the maximum harmonic that can be measured is dependent on the output frequency. Any harmonics that represent frequencies greater than

12.6kHz are returned as 0.

Query Syntax

Parameters

Examples

Returned Parameters

Related Commands

MEASure:ARRay:CURRent:HARMonic[:AMPLitude]? FETCh:ARRay:CURRent:HARMonic[:AMPLitude]? None

MEAS:ARR:CURR:HARM? FETC:ARR:CURR:HARM?

51 NR3 values MEAS:ARR:VOLT:HARM? MEAS:ARR:CURR:HARM:PHAS?

MEASure:ARRay:CURRent:HARMonic:PHASe? FETCh:ARRay:CURRent:HARMonic:PHASe?

Phase Selectable

These queries return an array of harmonic phases of output current in degrees, referenced to the positive zero crossing of the fundamental component.

The first value returned is the dc component (always returned as 0 degrees phase) , the second value is the fundamental frequency, and so on up to the 50th harmonic. Harmonic orders can be measured up to the fundamental measurement bandwidth of the measurement system, which is 12.6kHz. Thus the maximum harmonic that can be measured is dependent on the output frequency. Any harmonics that represent frequencies greater than 12.6kHz are returned as 0.

Query Syntax

Parameters

Examples

Returned Parameters

Related Commands

MEASure:ARRay:CURRent:HARMonic:PHASe? <NRf> FETCh:ARRay:CURRent:HARMonic:PHASe? <NRf> None

MEAS:ARR:CURR:HARM:PHAS? FETC:ARR:CURR:HARM:PHAS?

51 NR3 values MEAS:ARR:VOLT:HARM:PHAS? MEAS:ARR:CURR:HARM?

Language Dictionary - 3

MEASure:ARRay:CURRent:NEUTral? FETCh:ARRay:CURRent:NEUTral?

HP 6834B Only

These queries return an array containing the instantaneous output current of the neutral output terminal in amperes.

The output voltage and current are digitized whenever a measure command is given or whenever an acquire trigger occurs. If digitization is caused by a measure command, the time interval between samples is determined by the output frequency. For frequencies greater than 45Hz, the time interval is 25 microseconds. If digitization is caused by an acquire trigger, the time interval is set by SENSe:SWEep:TINTerval, and the position of the trigger relative to the beginning of the data buffer is determined by SENSe:SWEep:OFFSet:POINts.

Query Syntax

Parameters

Examples

Returned Parameters

MEASure:ARRay:CURRent:NEUTral[:DC]? FETCh:ARRay:CURRent:NEUTral[:DC]? None

MEAS:ARR:CURR:NEUT? FETC:ARR:CURR:NEUT?

4096 NR3 values

MEASure:ARRay:CURRent:NEUTral:HARMonic? FETCh:ARRay:CURRent:NEUTral:HARMonic?

HP 6834B Only

These queries return an array of harmonic amplitudes of output current of the neutral output terminal in rms amperes.

The first value returned is the dc component, the second value is the fundamental frequency, and so on up to the 50th harmonic. Harmonic orders can be measured up to the fundamental measurement bandwidth of the measurement system, which is 12.6kHz. Thus, the maximum harmonic that can be measured is dependent on the output frequency. Any harmonics that represent frequencies greater than

12.6kHz are returned as 0.

Query Syntax

Parameters

Examples

Returned Parameters

Related Commands

MEASure:ARRay:CURRent:NEUTral:HARMonic[:AMPLitude]? FETCh:ARRay:CURRent:NEUTral:HARMonic[:AMPLitude]? None

MEAS:ARR:CURR:NEUT:HARM? FETC:ARR:CURR:NEUT:HARM?

51 NR3 values MEAS:ARR:CURR:NEUT:HARM:PHAS?

3 - Language Dictionary

MEASure:ARRay:CURRent:NEUTral:HARMonic:PHASe? FETCh:ARRay:CURRent:NEUTral:HARMonic:PHASe?

HP 6834B Only

These queries return an array of harmonic phases of output current of the neutral output terminal in degrees, referenced to the positive zero crossing of the fundamental component.

Query Syntax

Parameters

Examples

Returned Parameters

Related Commands

MEASure:ARRay:CURRent:NEUTral:HARMonic:PHASe? FETCh:ARRay:CURRent:NEUTral:HARMonic:PHASe? None

MEAS:ARR:CURR:NEUT:HARM:PHAS? FETC:ARR:CURR:NEUT:HARM:PHAS?

51 NR3 values MEAS:ARR:CURR:NEUT:HARM?

MEASure:ARRay:VOLTage? FETCh:ARRay:VOLTage?

Phase Selectable

These queries return an array containing the instantaneous output voltage in volts. The output voltage and current are digitized whenever a measure command is given or whenever an

acquire trigger occurs. If digitization is caused by a measure command, the time interval between samples is determined by the output frequency. For frequencies greater than 45Hz, the time interval is 25 microseconds. If digitization is caused by an acquire trigger, the time interval is set by SENSe:SWEep:TINTerval, and the position of the trigger relative to the beginning of the data buffer is determined by SENSe:SWEep:OFFSet:POINts.

Query Syntax

Parameters

Examples

Returned Parameters

Related Commands

MEASure:ARRay:VOLTage[:DC]? FETCh:ARRay:VOLTage[:DC]? None

MEAS:ARR:VOLT? FETC:ARR:VOLT?

4096 NR3 values MEAS:ARR:CURR?

Language Dictionary - 3

MEASure:ARRay:VOLTage:HARMonic? FETCh:ARRay:VOLTage:HARMonic?

Phase Selectable

These queries return an array of harmonic amplitudes of output voltage in rms volts. The first value returned is the dc component, the second value is the fundamental frequency, and so on

12.6kHz are returned as 0.

Query Syntax

Parameters

Examples

Returned Parameters

Related Commands

MEASure:ARRay:VOLTage:HARMonic[:AMPLitude]? FETCh:ARRay:VOLTage:HARMonic[:AMPLitude]? None

MEAS:ARR:VOLT:HARM? FETC:ARR:VOLT:HARM?

51 NR3 values MEAS:ARR:CURR:HARM? MEAS:ARR:VOLT:HARM:PHAS?

MEASure:ARRay:VOLTage:HARMonic:PHASe? FETCh:ARRay:VOLTage:HARMonic:PHASe?

Phase Selectable

These queries return an array of harmonic phases of output voltage in degrees, referenced to the positive zero crossing of the fundamental component.

Query Syntax

Parameters

Examples

Returned Parameters

Related Commands

MEASure:ARRay:VOLTage:HARMonic:PHASe? <NRf> FETCh:ARRay:VOLTage:HARMonic:PHASe? <NRf> None

MEAS:ARR:VOLT:HARM:PHAS? FETC:ARR:VOLT:HARM:PHAS?

51 NR3 values MEAS:ARR:CURR:HARM:PHAS? MEAS:ARR:VOLT:HARM?

3 - Language Dictionary

Measurement Subsystem (Current)

This subsystem programs the current measurement capability of the ac source. Two measurement commands are available: MEASure and FETCh. MEASure triggers the acquisition of new measurement data before returning a reading. FETCh returns a reading computed from previously acquired data.

Individual outputs of a three-phase source are specified by the setting of INSTrument:NSELect.

Subsystem Syntax

MEASure | FETCh

[:SCALar]

:CURRent

[:DC]? Returns dc component of the current :AC? Returns ac rms current :ACDC? Returns ac+dc rms current :AMPLitude

:MAX? Returns peak current :CREStfactor? Returns current crestfactor :HARMonic

[:AMPLitude]? <n> Returns amplitude of the Nth harmonic of current

:PHASe? <n> Returns phase of the Nth harmonic of current

:THD? Returns % of total harmonic distortion of current :NEUTral

[:DC]? Returns neutral dc current (3-phase only)

:AC? Returns neutral ac rms current (3-phase only)

:ACDC? Returns neutral ac+dc rms current (3-phase only)

:HARMonic

[:AMPLitude]? <n> Returns neutral current harmonic amplitude (3-phase only) :PHASe? <n> Returns neutral current harmonic phase (3-phase only)

MEASure:CURRent? FETCh:CURRent?

Phase Selectable

These queries return the dc component of the output current being sourced at the output terminals.

Query Syntax

Parameters

Examples

Returned Parameters

Related Commands

MEASure:[SCALar]:CURRent[:DC]? FETCh:[SCALar]:CURRent[:DC]? None

MEAS:CURR? FETC:CURR?

<NR3> MEAS:VOLT? MEAS:CURR:AC?

Language Dictionary - 3

MEASure:CURRent:AC? FETCh:CURRent:AC?

Phase Selectable

These queries return the ac component rms current being sourced at the output terminals.

Query Syntax

Parameters

Examples

Returned Parameters

Related Commands

MEASure:[SCALar]:CURRent:AC? FETCh:[SCALar]:CURRent:AC? None

MEAS:CURR:AC? FETC:CURR:AC?

<NR3> MEAS:VOLT:AC? MEAS:CURR?

MEASure:CURRent:ACDC? FETCh:CURRent:ACDC?

Phase Selectable

These queries return the ac+dc rms current being sourced at the output terminals.

Query Syntax

Parameters

Examples

Returned Parameters

Related Commands

MEASure:[SCALar]:CURRent:ACDC? FETCh:[SCALar]:CURRent:ACDC? None

MEAS:CURR:ACDC? FETC:CURR:ACDC?

<NR3> MEAS:VOLT:ACDC? MEAS:CURR:AMPL:MAX?

MEASure:CURRent:AMPLitude:MAXimum? FETCh:CURRent:AMPLitude:MAXimum?

Phase Selectable

These queries return the absolute value of the peak current as sampled over one measurement acquisition of 4096 data points.

Query Syntax

Parameters

Examples

Returned Parameters

Related Commands

MEASure:[SCALar]:CURRent:AMPLitude:MAXimum? FETCh:[SCALar]:CURRent:AMPLitude:MAXimum? None

MEAS:CURR:AMPL:MAX? FETC:CURR:AMPL:MAX?

<NR3> MEAS:CURR:ACDC? MEAS:CURR:CRES?

3 - Language Dictionary

MEASure:CURRent:CREStfactor? FETCh:CURRent:CREStfactor?

Phase Selectable

These queries return the output current crest factor. This is the ratio of peak output current to rms output current.

Query Syntax

Parameters

Examples

Returned Parameters

Related Commands

MEASure:[SCALar]:CURRent:CREStfactor? FETCh:[SCALar]:CURRent:CRESfactor? None

MEAS:CURR:CRES? FETC:CURR:CRES?

<NR3> MEAS:CURR:ACDC? MEAS:CURR:AMPL:MAX?

MEASure:CURRent:HARMonic? FETCh:CURRent:HARMonic?

Phase Selectable

These queries return the rms amplitude of the Nth harmonic of output current. The parameter is the desired harmonic number. Queries sent with a value of 0 return the dc component.

A value of 1 returns the fundamental output frequency. Harmonic orders can be queried up to the fundamental measurement bandwidth of the measurement system, which is 12.6kHz. Thus the maximum harmonic that can be measured is dependent on the output frequency. Any harmonics that represent frequencies greater than 12.6kHz are returned as 0.

Query Syntax

Parameters

Examples

Returned Parameters

Related Commands

MEASure:[SCALar]:CURRent:HARMonic[:AMPLitude]? <NRf> FETCh:[SCALar]:CURRent:HARMonic[:AMPLitude]? <NRf> 0 to 50

MEAS:CURR:HARM? 3 FETC:CURR:HARM? 1

<NR3> MEAS:CURR:HARM:PHAS? MEAS:CURR:HARM:THD?

Language Dictionary - 3

MEASure:CURRent:HARMonic:PHASe? FETCh:CURRent:HARMonic:PHASe?

Phase Selectable

These queries return the phase angle of the Nth harmonic of output current, referenced to the positive zero crossing of the fundamental component.

The parameter is the desired harmonic number. Queries sent with a value of 0 return the dc component. A value of 1 returns the fundamental output frequency. Harmonic orders can be queried up to the fundamental measurement bandwidth of the measurement system, which is 12.6kHz. Thus the maximum harmonic that can be measured is dependent on the output frequency. Any harmonics that represent frequencies greater than 12.6kHz are returned as 0.

Query Syntax

Parameters

Examples

Returned Parameters

Related Commands

MEASure:[SCALar]:CURRent:HARMonic:PHASe? <NRf> FETCh:[SCALar]:CURRent:HARMonic:PHASe? <NRf> 0 to 50

MEAS:CURR:HARM:PHAS? 3 FETC:CURR:HARM:PHAS? 1

<NR3> MEAS:CURR:HARM? MEAS:CURR:HARM:THD?

MEASure:CURRent:HARMonic:THD? FETCh:CURRent:HARMonic:THD?

Phase Selectable

These queries return the percentage of total harmonic distortion and noise in the output current.

Query Syntax

Parameters

Examples

Returned Parameters

Related Commands

MEASure:[SCALar]:CURRent:HARMonic:THD? FETCh:[SCALar]:CURRent:HARMonic:THD? None

MEAS:CURR:HARM:THD? FETC:CURR:HARM:THD?

<NR3> MEAS:CURR:HARM? MEAS:CURR:HARM:PHAS?

MEASure:CURRent:NEUTral? FETCh:CURRent:NEUTral?

HP 6834B Only

These queries return the dc current in the neutral output terminal of a three-phase ac source.

Query Syntax

Parameters

Examples

Returned Parameters

Related Commands

MEASure:[SCALar]:CURRent:NEUTral[:DC]? FETCh:[SCALar]:CURRent:NEUTral[:DC]? None

MEAS:CURR:NEUT? FETC:CURR:NEUT?

<NR3> MEAS:CURR:NEUT:AC? MEAS:CURR:NEUT:ACDC?

3 - Language Dictionary

MEASure:CURRent:NEUTral:AC? FETCh:CURRent:NEUTral:AC?

HP 6834B Only

These queries return the ac rms current in the neutral output terminal of a three-phase ac source.

Query Syntax

Parameters

Examples

Returned Parameters

Related Commands

MEASure:[SCALar]:CURRent:NEUTral:AC? FETCh:[SCALar]:CURRent:NEUTral:AC? None

MEAS:CURR:NEUT:AC? FETC:CURR:NEUT:AC?

<NR3> MEAS:CURR:NEUT? MEAS:CURR:NEUT:ACDC?

MEASure:CURRent:NEUTral:ACDC? FETCh:CURRent:NEUTral:ACDC?

HP 6834B Only

These queries return the ac+dc rms current in the neutral output terminal of a three-phase .

Query Syntax

Parameters

Examples

Returned Parameters

Related Commands

MEASure:[SCALar]:CURRent:NEUTral:ACDC? FETCh:[SCALar]:CURRent:NEUTral:ACDC? None

MEAS:CURR:NEUT:ACDC? FETC:CURR:NEUT:ACDC?

<NR3> MEAS:CURR:NEUT? MEAS:CURR:NEUT:AC?

MEASure:CURRent:NEUTral:HARMonic? FETCh:CURRent:NEUTral:HARMonic?

HP 6834B Only

These queries return the rms amplitude of the Nth harmonic of current in the neutral output terminal of a three-phase ac source.

Query Syntax

Parameters

Examples

Returned Parameters

Related Commands

MEASure:[SCALar]:CURRent:NEUTral:HARMonic[:AMPLitude]? <NRf> FETCh:[SCALar]:CURRent:NEUTral:HARMonic[:AMPLitude]? <NRf> 0 to 50

MEAS:CURR:NEUT:HARM? 3 FETC:CURR:NEUT:HARM? 1

<NR3> MEAS:CURR:NEUT:HARM:PHAS?

Language Dictionary - 3

MEASure:CURRent:NEUTral:HARMonic:PHASe? FETCh:CURRent:NEUTral:HARMonic:PHASe?

HP 6834B Only

These queries return the phase angle of the Nth harmonic of current in the neutral output terminal of a three-phase ac source, referenced to the positive zero crossing of the fundamental component.

Query Syntax

Parameters

Examples

Returned Parameters

Related Commands

MEASure:[SCALar]:CURRent:NEUTral:HARMonic:PHASe? <NRf> FETCh:[SCALar]:CURRent:NEUTral:HARMonic:PHASe? <NRf> 0 to 50

MEAS:CURR:NEUT:HARM:PHAS? 3 FETC:CURR:NEUT:HARM:PHAS? 1

<NR3> MEAS:CURR:NEUT:HARM?

3 - Language Dictionary

Measurement Subsystem (Frequency)

This subsystem programs the frequency measurement capability of the ac source. Two measurement commands are available: MEASure and FETCh. MEASure triggers the acquisition of new measurement data before returning a reading. FETCh returns a reading computed from previously acquired data.

Subsystem Syntax

MEASure | FETCh

[:SCALar]

:FREQuency? Returns the output frequency

MEASure:FREQuency? FETCh:FREQuency?

This query returns the output frequency in Hertz.

Query Syntax

Parameters

Examples

Returned Parameters

MEASure:[SCALar]:FREQuency? FETCh:[SCALar]:FREQuency? None

MEAS:FREQ? FETC:FREQ?

<NR3>

Language Dictionary - 3

Measurement Subsystem (Power)

This subsystem programs the power measurement capability of the ac source. Two measurement commands are available: MEASure and FETCh. MEASure triggers the acquisition of new measurement data before returning a reading. FETCh returns a reading computed from previously acquired data. Individual outputs of a three-phase source are specified by the setting of INSTrument:NSELect.

Subsystem Syntax

MEASure | FETCh

[:SCALar]

:POWer

[:DC]? Returns the dc component of power :AC

[:REAL]? Returns real power

:APParent? Returns VA

:REACtive? Returns VAR

:PFACtor? Returns power factor

:TOTal? Returns real 3-phase total power

MEASure:POWer? FETCh:POWer?

Phase Selectable

These queries return the dc component of the power being sourced at the output terminals in watts.

Query Syntax

Parameters

Examples

Returned Parameters

Related Commands

MEASure:[SCALar]:POWer[:DC]? FETCh:[SCALar]:POWer[:DC]? None

MEAS:POW? FETC:POW?

<NR3> MEAS:POW:AC?

MEASure:POWer:AC? FETCh:POWer:AC?

Phase Selectable

These queries return the in-phase component of power being sourced at the output terminals in watts.

Query Syntax

Parameters

Examples

Returned Parameters

Related Commands

MEASure:[SCALar]:POWer:AC[:REAL]? FETCh:[SCALar]:POWer:AC[:REAL]? None

MEAS:POW:AC? FETC:POW:AC?

<NR3> MEAS:POW?

3 - Language Dictionary

MEASure:POWer:AC:APParent? FETCh:POWer:AC:APParent?

Phase Selectable

These queries return the apparent power being sourced at the output terminals in volt-amperes.

Query Syntax

Parameters

Examples

Returned Parameters

Related Commands

MEASure:[SCALar]:POWer:AC:APParent? FETCh:[SCALar]:POWer:AC:APParent? None

MEAS:POW:AC:APP? FETC:POW:AC:APP?

<NR3> MEAS:POW:REAC? MEAS:POW:PFAC?

MEASure:POWer:AC:REACtive? FETCh:POWer:AC:REACtive?

Phase Selectable

These queries return the reactive power being sourced at the output terminals in volt-amperes reactive. Reactive power is computed as: VAR = sqrt(square(apparent power) square(real power))

Query Syntax

Parameters

Examples

Returned Parameters

Related Commands

MEASure:[SCALar]:POWer:AC:REACtive? FETCh:[SCALar]:POWer:AC:REACtive? None

MEAS:POW:AC:REAC? FETC:POW:AC:REAC?

<NR3> MEAS:POW:AC:APP? MEAS:POW:PFAC?

MEASure:POWer:AC:PFACtor? FETCh:POWer:AC:PFACtor?

Phase Selectable

These queries return the output power factor. The power factor is computed as: pfactor = real power/apparent power

Query Syntax

Parameters

Examples

Returned Parameters

Related Commands

MEASure:[SCALar]:POWer:AC:PFACtor? FETCh:[SCALar]:POWer:AC:PFACtor? None

MEAS:POW:AC:PFAC? FETC:POW:AC:PFAC?

<NR3> MEAS:POW:AC:APP? MEAS:POW:REAC?

Language Dictionary - 3

MEASure:POWer:AC:TOTal? FETCh:POWer:AC:TOTal?

HP 6834B Only

These queries return the total power being sourced at the output terminals of a three-phase ac source.

Query Syntax

Parameters

Examples

Returned Parameters

MEASure:[SCALar]:POWer:AC:TOTal? FETCh:[SCALar]:POWer:AC:TOTal? None

MEAS:POW:AC:TOT? FETC:POW:AC:TOT?

<NR3>

3 - Language Dictionary

Measurement Subsystem (Voltage)

This subsystem programs the voltage measurement capability of the ac source. Two measurement commands are available: MEASure and FETCh. MEASure triggers the acquisition of new measurement data before returning a reading. FETCh returns a reading computed from previously acquired data. Individual outputs of a three-phase source are specified by the setting of INSTrument:NSELect.

Subsystem Syntax

MEASure | FETCh

[:SCALar]

:VOLTage

[:DC]? Returns dc component of the voltage :AC? Returns ac rms voltage :ACDC? Returns ac+dc rms voltage :HARMonic

[:AMPLitude]? <n> Returns amplitude of the Nth harmonic of voltage

:PHASe? <n> Returns phase of the Nth harmonic of voltage

:THD? Returns % of total harmonic distortion of voltage

MEASure:VOLTage? FETCh:VOLTage?

Phase Selectable

These queries return the dc component of the output voltage being sourced at the output terminals.

Query Syntax

Parameters

Examples

Returned Parameters

Related Commands

MEASure:[SCALar]:VOLTage[:DC]? FETCh:[SCALar]:VOLTage[:DC]? None

MEAS:VOLT? FETC:VOLT?

<NR3> MEAS:CURR? MEAS:VOLT:AC?

MEASure:VOLTage:AC? FETCh:VOLTage:AC?

Phase Selectable

These queries return the ac rms voltage being sourced at the output terminals.

Query Syntax

Parameters

Examples

Returned Parameters

Related Commands

MEASure:[SCALar]:VOLTage:AC? FETCh:[SCALar]:VOLTage:AC? None

MEAS:VOLT:AC? FETC:VOLT:AC?

<NR3> MEAS:CURR:AC? MEAS:VOLT?

MEASure:VOLTage:ACDC? FETCh:VOLTage:ACDC?

Phase Selectable

These queries return the ac+dc rms voltage being sourced at the output terminals.

Language Dictionary - 3

Query Syntax

Parameters

Examples

Returned Parameters

Related Commands

MEASure:[SCALar]:VOLTage:ACDC? FETCh:[SCALar]:VOLTage:ACDC? None

MEAS:VOLT:ACDC? FETC:VOLT:ACDC?

<NR3> MEAS:CURR:ACDC? MEAS:VOLT?

MEASure:VOLTage:HARMonic? FETCh:VOLTage:HARMonic?

Phase Selectable

These queries return the rms amplitude of the Nth harmonic of output voltage. The parameter is the desired harmonic number. Queries sent with a value of 0 return the dc component.

Query Syntax

Parameters

Examples

Returned Parameters

Related Commands

MEASure:[SCALar]:VOLTage:HARMonic[:AMPLitude]? <NRf> FETCh:[SCALar]:VOLTage:HARMonic[:AMPLitude]? <NRf> 0 to 50

MEAS:VOLT:HARM? 3 FETC:VOLT:HARM? 1

<NR3> MEAS:VOLT:HARM:PHAS? MEAS:VOLT:HARM:THD?

3 - Language Dictionary

MEASure:VOLTage:HARMonic:PHASe? FETCh:VOLTage:HARMonic:PHASe?

Phase Selectable

These queries return the phase angle of the Nth harmonic of output voltage, referenced to the positive zero crossing of the fundamental component.

Query Syntax

Parameters

Examples

Returned Parameters

Related Commands

MEASure:[SCALar]:VOLTage:HARMonic:PHASe? <NRf> FETCh:[SCALar]:VOLTage:HARMonic:PHASe? <NRf> 0 to 50

MEAS:VOLT:HARM:PHAS? 3 FETC:VOLT:HARM:PHAS? 1

<NR3> MEAS:VOLT:HARM? MEAS:VOLT:HARM:THD?

MEASure:VOLTage:HARMonic:THD? FETCh:VOLTage:HARMonic:THD?

Phase Selectable

These queries return the percentage of total harmonic distortion and noise in the output voltage.

Query Syntax

Parameters

Examples

Returned Parameters

Related Commands

MEASure:[SCALar]:VOLTage:HARMonic:THD? FETCh:[SCALar]:VOLTage:HARMonic:THD? None

MEAS:VOLT:HARM:THD? FETC:VOLT:HARM:THD?

<NR3> MEAS:VOLT:HARM? MEAS:VOLT:HARM:PHAS?

Language Dictionary - 3

Output Subsystem

This subsystem controls the main outputs, the signal outputs, the the power-on state, and the output protection function of the ac source.

Subsystem Syntax

OUTPut

[:STATe] <bool> Enable/disable output voltage, current, power, etc. :COUPling <coupling> Enables ac or dc output coupling (AC | DC) :DFI

[:STATE] <bool> Enable/disable DFI output :SOURce <source> Selects an event source (QUES | OPER | ESB | RQS | OFF)

:IMPedance

[:STATE] <bool> Enable/disable output impedance programming :REAL <n> Sets resistive part of output impedance :REACtive <n> Sets inductive part of output impedance

:PON

:STATe <state> Set power-on state (*RST | *RCL0)

:PROTection

:CLEar Reset latched protection :DELay <n> Delay after programming/before protection

:RI

:MODE <mode> Set remote inhibit input (LATC | LIVE | OFF)

:TTLTrg

[:STATE] <bool> Enable/disable trigger out drive :SOURce <source> Selects a TTLTrg source (BOT | EOT | LIST)

OUTPut

This command enables or disables the output. The state of a disabled output is an output voltage amplitude set to 0 volts, with output relays opened.

The query form returns the output state.

Command Syntax

Parameters *RST Value

Examples

Query Syntax

Returned Parameters

Related Commands

OUTPut[:STATe] <bool> 0 | 1 | OFF | ON OFF

OUTP 1 OUTP:STAT ON

OUTPut[:STATe]? 0 | 1 *RCL *SAV

3 - Language Dictionary

OUTPut:COUPling

HP 6811B, HP 6812B, HP 6813B Only

This command enables ac or dc output coupling. When the output coupling is set to AC, a dc leveling loop attempts to maintain zero average output voltage. The loop has a corner frequency of about 2Hz. It will not prevent short transient waveforms that may have non-zero average voltage, but will cause a settling transient to an average value of 0 volts.

The output coupling must be set to DC to obtain dc output with VOLTage:OFFSet, or to generate output transients that have net dc components.

Command Syntax

Parameters *RST Value

Examples

Query Syntax

Returned Parameters

Related Commands

OUTPut:COUPling <coupling> AC | DC AC

OUTP:COUP DC

OUTPut:COUPling? <CRD> *RCL *SAV

OUTPut:DFI

This command enables or disables the discrete fault indicator (DFI) signal to the ac source.

Command Syntax

Parameters *RST Value

Examples

Query Syntax

Returned Parameters

Related Commands

OUTPut:DFI[:STATe] <bool> 0 | 1 | OFF | ON OFF

OUTP:DFI 1 OUTP:DFI ON

OUTPut:DFI[:STATe]? 0 | 1 OUTP:DFI:SOUR

OUTPut:DFI:SOURce

This command selects the source for DFI events. The choices are:

QUEStionable Questionable summary bit OPERation Operation summary bit ESB Standard Event summary bit RQS Request Service summary bit OFF Never true

Command Syntax

Parameters *RST Value

Examples

Query Syntax

Returned Parameters

Related Commands

OUTPut:DFI:SOURce <source> QUEStionable | OPERation | ESP | RQS | OFF OFF

OUTP:DFI:SOUR OPER

OUTPut:DFI:SOURce? <CRD> OUTP:DFI

Language Dictionary - 3

OUTPut:IMPedance

HP 6811B, HP 6812B, HP 6813B Only

This command enables or disables the output impedance programming capability of the ac source.

Command Syntax

Parameters *RST Value

Examples

Query Syntax

Returned Parameters

Related Commands

OUTPut:IMPedance[:STATe] <bool> 0 | 1 | OFF | ON OFF

OUTP:IMP 1 OUTP:IMP ON

OUTPut:IMPedance[:STATe]? 0 | 1 OUTP:IMP:REAL OUTP:IMP:REAC

OUTPut:IMPedance:REAL

HP 6811B, HP 6812B, HP 6813B Only

This command sets the real part of the output impedance of the ac source. OUTPut:IMPedance:STATe must be enabled for the programmed impedance to affect the output.

Command Syntax

Parameters *RST Value

Examples

Query Syntax

Returned Parameters

Related Commands

OUTPut:IMPedance:REAL <NRf> 0 to 1 (ohms) 0

OUTP:IMP:REAL 0.25

OUTPut:IMPedance:REAL? <NR3> OUTP:IMP OUTP:IMP:REAC

OUTPut:IMPedance:REACtive

HP 6811B, HP 6812B, HP 6813B Only

This command sets the reactive part of the output impedance of the ac source. OUTPut:IMPedance:STATe must be enabled for the programmed impedance to affect the output.

Command Syntax

Parameters *RST Value

Examples

Query Syntax

Returned Parameters

Related Commands

OUTPut:IMPedance:REACtive <NRf>

0.00002 to 0.001 (henrys)

0.0005

OUTP:IMP:REAC 100E-6

OUTPut:IMPedance:REAC? <NR3> OUTP:IMP OUTP:IMP:REAL

3 - Language Dictionary

OUTPut:PON:STATe

This command selects the power-on state of the ac source. The following states can be selected:

RST RCL0

Returned Parameters

Sets the power-on state to *RST. Refer to the *RST command as described later in this chapter for more information. Sets the power-on state to *RCL 0. Refer to the *RCL command as described later in this chapter for more information.

Command Syntax

Parameters

Examples

Query Syntax

Related Commands

OUTPut:PON:STATe <state> RST | RCL0

OUTP:PON:STAT RST

OUTPut:PON:STATe? <CRD> *RST *RCL

OUTPut:PROTection:CLEar

This command clears the latch that disables the output when an overvoltage (OV), overcurrent (OC), overtemperature (OT), remote inhibit (RI), or power rail fault condition is detected. All conditions that generated the fault must be removed before the latch can be cleared. The output is then restored to the state it was in before the fault condition occurred.

Command Syntax

Parameters

Examples

Related Commands

OUTPut:PROTection:CLEar None

OUTP:PROT:CLE

OUTP:PROT:DEL *SAV *RCL

OUTPut:PROTection:DELay

This command sets the delay time between the programming of an output change that produces a CL or UNREG status condition and the recording of that condition by the Questionable Status Condition register. The delay prevents momentary changes in status that can occur during programming from being registered as events by the status subsystem. In most cases these temporary conditions are not considered an event, and to record them as such would be a nuisance.

Command Syntax

Parameters

Unit

*RST Value

Examples

Query Syntax

Returned Parameters

Related Commands

OUTPut:PROTection:DELay <NRf+> 0 to 100 | MAXimum | MINimum

S seconds)

100 milliseconds

OUTP:PROT:DEL 75E-1

OUTPut:PROTection:DELay? <NR3> OUTP:PROT:CLE *SAV *RCL

Language Dictionary - 3

OUTPut:RI:MODE

This command selects the mode of operation of the Remote Inhibit protection. The following modes can be selected:

LATChing LIVE OFF

Returned Parameters

A TTL low at the RI input latches the output in the protection shutdown state, which can only be cleared by OUTPut:PROTection:CLEar. The output state follows the state of the RI input. A TTL low at the RI input turns the output off; a TTL high turns the output on. The instrument ignores the RI input.

Command Syntax

Parameters *RST Value

Examples

Query Syntax

Related Commands

OUTPut:RI:MODE <mode> LATChing | LIVE | OFF LATChing

OUTP:RI:MODE LIVE

OUTPut:RI:MODE? <CRD> OUTP:PROT:CLE

OUTPut:TTLTrg

This command enables or disables the ac source Trigger Out signal, which is available at a BNC connector on the rear of the instrument.

Command Syntax

Parameters *RST Value

Examples

Query Syntax

Returned Parameters

Related Commands

OUTPut:TTLTrg[:STATe] <bool> 0 | 1 | OFF | ON OFF

OUTP:TTLT 1 OUTP:TTLT ON

OUTPut:TTLTrg[:STATe]? 0 | 1 OUTP:TTLT:SOUR

OUTPut:TTLTrg:SOURce

This command selects the signal source for the Trig Out signal as follows:

BOT Beginning of transient output EOT End of transient output LIST Specified by the TTLTrg list

When an event becomes true at the selected TTLTrg source, a pulse is sent to the BNC connector on the rear of the ac source.

Command Syntax

Parameters *RST Value

Examples

Query Syntax

Returned Parameters

Related Commands

OUTPut:TTLTrg:SOURce <source> BOT | EOT | LIST BOT

OUTP:TTLT:SOUR LIST

OUTPut:TTLTrg:SOURce? <CRD> OUTP:TTLT

3 - Language Dictionary

Sense Subsystem

This subsystem controls the measurement current range, the data acquire sequence, and the harmonic measurement window of the ac source.

Subsystem Syntax

SENSe

:CURRent

:ACDC

:RANGe

[:UPPer]<n> Sets measurement current range

:SWEep

:OFFSet

:POINts <n> Define trigger points relative to the start of the digitizer data record

:TINTerval <n> Sets the digitizer sample spacing

:WINDow

[:TYPE] <type> Sets measurement window type (KBESsel | RECTangular)

SENSe:CURRent:ACDC:RANGe

HP 6811B, HP 6812B, HP 6813B Only

This command sets the current measurement range. There are two current measurement ranges:

HP 6811B High Range: 0 through 28.5671 A

Low Range: 0 through 2.85671 A

( − 40.4 A

rms

( − 4.04 A

rms

through + 40.4 A

peak

through + 4.04 A

peak

)

HP 6812B, HP 6813B High Range: 0 through 57.1342 A

Low Range: 0 through 5.71342 A

( − 80.8 A

rms

( − 8.08 A

rms

through + 80.8 A

peak

through + 8.08 A

peak

)

The high range covers the maximum current measurement capability of the instrument. The low range increases the low current measurement sensitivity by a factor of 10 for greater accuracy and resolution.

The value that you program with SENS:CURR:ACDC:RANG must be the maximum rms current that you expect to measure. Based on this value, the instrument will select the range that gives the best resolution in measuring a sinusoidal waveform of that rms value. The crossover value of the two ranges is

5.71342 A

. (2.85671 A

rms

Command Syntax

Parameters

for HP 6811B)

SENSe:CURRent:ACDC:RANGe[:UPPer] <NRf+> 0 through 57.1342 | MINimum | MAXimum (all except HP 6811B) 0 through 28.5671 | MINimum | MAXimum (HP 6811B only)

Unit

*RST Value

Examples

Query Syntax

Returned Parameters

Related Commands

A (rms amperes) MAX (high range)

SENS:CURR:ACDC:RANGE MIN

SENSe:CURRent:ACDC:RANGe? <NR3> SENS:SWE:TINT MEAS:ARR

Language Dictionary - 3

SENSe:SWEep:OFFSet:POINts

This command defines the trigger point relative to the start of the returned data record when an acquire trigger is used. The values can range from -4095 to 2E9. When the values are negative, the values in the beginning of the data record represent samples taken prior to the trigger.

Command Syntax

Parameters *RST Value

Examples

Query Syntax

Returned Parameters

Related Commands

SENSe:SWEep:OFFSet:POINts <NRf+> 4096 through 2E9 | MINimum | MAXimum 0 (zero)

SENS:SWE:OFFS:POIN -2047

SENSe:SWEep:OFFSet:POINts? <NR3> SENS:SWE:TINT MEAS:ARR

SENSe:SWEep:TINTerval

This command defines the time period between samples when voltage and current digitization is controlled by the acquire trigger sequence. The sample period can be programmed from 25 to 250 microseconds in 25 microsecond increments.

NOTE: All the MEASure commands use the ACQuire trigger sequence implicitly. These

commands always set the sample period to 25 microseconds.

Command Syntax

Parameters *RST Value

Examples

Query Syntax

Returned Parameters

Related Commands

SENSe:SWEep:TINTeral <NRf+>

25.037 through 250.37 (microseconds) | MAXimum | MINimum

25.037 µs (HP 6814B/6834B)

25.049 µs (HP 6811B/6812B/6813B/6843A)

SENS:SWE:TINT 100E-6

SENSe:SWEep:TINTerval? <NR3> SENS:SWE:OFFS:POIN MEAS:ARR

SENSe:WINDow

Phase Selectable

This command sets the window function which is used in harmonic measurements. KBESsel is the preferred window and should be used for most measurements. RECTangular is available for making harmonic measurements that comply with regulatory requirements for quasi-stationary harmonics.

When RECTangular is selected, the output frequency is constrained to frequencies that give an integer number of cycles in the acquired waveform buffers, and the measurement acquisition time is set to 0.1 seconds. Any programmed output frequency will be routed to the closest frequency that has this attribute. These frequencies are exact multiples of 10.000207Hz

Command Syntax

Parameters *RST Value

Examples

Query Syntax

Returned Parameters

SENSe:WINDow[:TYPE] <type> RECTangular | KBESsel KBESsel

SENS:WIND KBES

SENSe:WINDow? <CRD>

3 - Language Dictionary

Source Subsystem (Current)

This subsystem programs the output current of the ac source.

Subsystem Syntax

[SOURce:]

CURRent

[:LEVel]

[:IMMediate]

[:AMPLitude] <n> Sets the rms current limit

:PEAK

[:IMMediate] <n> Sets the peak current limit :MODE <mode> Sets peak current limit mode (FIX | STEP | PULS | LIST) :TRIGgered <n> Sets the transient level for peak current limit

:PROTection

:STATe <bool> Enable/Disable rms current limit protection

CURRent

Phase Selectable

This command sets the rms current limit of the specified output phase. If the output current exceeds this limit, the output voltage amplitude is reduced until the rms current is with the limit. The CL bit of the Questionable Status register indicates that the current limit control loop is active. If the current protection state is programmed on, the output latches into a disabled state when current limiting occurs.

NOTE: On HP models 6814B, 6834B and 6843A, the CURRent command is coupled with the

VOLTage:RANGe. This means that the maximum current limit that can be programmed at a given time depends on the voltage range setting in which the unit is presently operating. Refer to chapter 4 under "Coupled Commands" for more information.

Command Syntax

Parameters

Unit

*RST Value

Examples

Query Syntax

Returned Parameters

Related Commands

[SOURce:]CURRent[:LEVel][:IMMediate][:AMPLitude] <NRf+> refer to Specifications Table in User’s Guide A (rms amperes) MAXimum (HP 6811B/6812B/6813B) 1 (HP 6814B/6834B/6843A)

CURR 5 CURR:LEV .5

[SOURce:]CURRent[:LEVel][:IMMediate][:AMPLitude]? <NR3> CURR:PROT:STAT VOLT:RANG

Language Dictionary - 3

CURRent:PEAK

HP 6811B, HP 6812B, HP 6813B Only

This command sets the output limit of the absolute value of peak instantaneous current.

Command Syntax

Parameters

Unit

*RST Value

Examples

Query Syntax

Returned Parameters

Related Commands

[SOURce:]CURRent:PEAK[:IMMediate] <NRf+> refer to Specifications Table in User’s Guide A (peak amperes) 13 (HP 6811B/6812B) 26 (HP 6813B)

CURR:PEAK:IMM 15

[SOURce:]CURRent:PEAK[:IMMediate]? <NR3> CURR:PEAK:MODE CURR:PEAK:TRIG

CURRent:PEAK:MODE

HP 6811B, HP 6812B, HP 6813B Only

This command determines how the peak current limit is controlled during a triggered output transient. The choices are:

FIXed STEP

PULSe LIST

The peak current limit is unaffected by a triggered output transient. The peak current limit is programmed to the value set by CURRent:PEAK:TRIGgered when a triggered transient occurs. The peak current limit is changed to the value set by CURRent:PEAK:TRIGgered for a duration determined by the pulse commands. The peak current limit is controlled by the peak current list when a triggered transient occurs.

Command Syntax

Parameters *RST Value

Examples

Query Syntax

Returned Parameters

Related Commands

[SOURce:]CURRent:PEAK:MODE <mode> FIXed | STEP | PULSe | LIST FIXed

CURR:PEAK:MODE FIX

[SOURce:]CURRent:PEAK:MODE? <CRD> CURR:PEAK CURR:PEAK:TRIG

3 - Language Dictionary

CURRent:PEAK:TRIGgered

HP 6811B, HP 6812B, HP 6813B Only

This command sets the output limit of the absolute value of peak instantaneous current when a step or pulse transient is triggered.

Command Syntax

Parameters

Unit

*RST Value

Examples

Query Syntax

Returned Parameters

Related Commands

[SOURce:]CURRent:PEAK:TRIGgered <NRf+> refer to Specifications Table in User’s Guide A (peak amperes) 13 (HP 6811B/6812B) 26 (HP 6813B)

CURR:PEAK:TRIG 15

[SOURce:]CURRent:PEAK:TRIG? <NR3> CURR:PEAK CURR:PEAK:MODE

CURRent:PROTection:STATe

This command enables or disables the overcurrent (OC) protection function. If the overcurrent protection function is enabled and the exceeds the programmed level, then the output is disabled and the Questionable Condition status register OC bit is set (see chapter 4 under “Programming the Status Registers”). An overcurrent condition can be cleared with OUTPut:PROTection:CLEar after the cause of the condition is removed.

NOTE: Use OUTP:PROT:DEL to prevent momentary current limit conditions caused by

programmed output changes from tripping the overcurrent protection.

Command Syntax

Parameters *RST Value

Examples

Query Syntax

Returned Parameters

Related Commands

[SOURce:]CURRent:PROTection:STATe<bool> 0 | 1 | OFF | ON OFF

CURR:PROT:STAT 0CURR:PROT:STAT OFF

[SOURce:]CURRent:PROTection:STATe? 0 | 1 OUTP:PROT:CLE OUTP:PROT:DEL

Source Subsystem (Frequency)

This subsystem programs the output frequency of the ac source.

Subsystem Syntax

[SOURce:]

FREQuency

[:CW | :IMMediate] <n> Sets the frequency :MODE <mode> Sets frequency mode (FIX | STEP | PULS | LIST) :SLEW

:TRIGgered <n> Sets the triggered frequency

FREQuency

This command sets the frequency of the output waveform.

Language Dictionary - 3

Command Syntax

Parameters

Unit

*RST Value

Examples

Query Syntax

Returned Parameters

Related Commands

[SOURce:]FREQuency[:CW | :IMMediate] <NRf+> refer to Specifications Table in User’s Guide HZ (hertz) 60

FREQ 50

[SOURce:]FREQuency[:CW | :IMMediate]? <NR3> FREQ:MODE FREQ:SLEW

FREQuency:MODE

This command determines how the output frequency is controlled during a triggered output transient. The choices are:

FIXed STEP

PULSe LIST

Returned Parameters

The output frequency is unaffected by a triggered output transient. The output frequency is programmed to the value set by FREQuency:TRIGgered when a triggered transient occurs. The output frequency is changed to the value set by FREQuency:TRIGgered for a duration determined by the pulse commands. The output frequency is controlled by the frequency list when a triggered transient occurs.

Command Syntax

Parameters *RST Value

Examples

Query Syntax

Related Commands

[SOURce:]FREQuency:MODE <mode> FIXed | STEP | PULSe | LIST FIXed

FREQ:MODE FIX

[SOURce:]FREQuency:MODE? <CRD> FREQ FREQ:TRIG

3 - Language Dictionary

FREQuency:SLEW

This command sets the rate at which frequency changes for all programmed changes in output frequency. Instantaneous frequency changes can be obtained by sending MAXimum or INFinity. The SCPI keyword INFinity is represented by the number 9.9E37.

Command Syntax

Parameters *RST Value

Examples

Query Syntax

Returned Parameters

Related Commands

[SOURce:]FREQuency:SLEW[:IMMediate] <NRf+> | INFinity 0 to 9.9E37 | MAXimum | MINimum | INFinity MAXimum

FREQ:SLEW:IMM 75 FREQ:SLEW MAX

[SOURce:]FREQuency:SLEW[:IMMediate]? <NR3> FREQ FREQ:SLEW:MODE

FREQuency:SLEW:MODE

This command determines how the frequency slew rate is controlled during a triggered output transient. The choices are:

FIXed STEP

PULSe LIST

Returned Parameters

The frequency slew rate is unaffected by a triggered output transient. The frequency slew rate is programmed to the value set by FREQuency:SLEW:TRIGgered when a triggered transient occurs. The frequency slew rate is changed to the value set by FREQuency:SLEW:TRIGgered for a duration determined by the pulse commands. The frequency slew rate is controlled by the frequency slew list when a triggered transient occurs.

Command Syntax

Parameters *RST Value

Examples

Query Syntax

Related Commands

[SOURce:]FREQuency:SLEW:MODE <mode> FIXed | STEP | PULSe | LIST FIXed

FREQ:SLEW:MODE FIX

[SOURce:]FREQuency:SLEW:MODE? <CRD> FREQ FREQ:SLEW:TRIG

FREQency:SLEW:TRIGgered

This command sets the rate at which frequency changes during a triggered output transient. Instantaneous frequency changes can be obtained by sending MAXimum or INFinity. The SCPI keyword INFinity is represented by the number 9.9E37.

Command Syntax

Parameters *RST Value

Examples

Query Syntax

Returned Parameters

Related Commands

[SOURce:]FREQuency:SLEW:TRIGgered <NRf+> | INFinity 0 to 9.9E37 | MAXimum | MINimum | INFinity MAXimum

FREQ:SLEW:TRIG 75 FREQ:SLEW:TRIG MAX

[SOURce:]FREQuency:SLEW:TRIGgered? <NR3> FREQ FREQ:SLEW:MODE

Language Dictionary - 3

FREQuency:TRIGgered

This command programs the frequency that the output will be set to during a triggered step or pulse transient.

Command Syntax

Parameters

Unit

*RST Value

Examples

Query Syntax

Returned Parameters

Related Commands

[SOURce:]FREQuency:TRIGgered <NRf+> refer to Specifications Table in User’s Guide HZ (hertz) 60

FREQ:TRIG 50

[SOURce:]FREQuency:TRIGgered? <NR3> FREQ FREQ:MODE

3 - Language Dictionary

Source Subsystem (Function)

This subsystem programs the output function of the ac source.

Subsystem Syntax

[SOURce:]

FUNCtion

[:SHAPe]

FUNCtion

This command selects the shape of the output voltage waveform as follows:

SINusoid SQUare CSINusoid

<table>

The maximum peak voltage that the ac source can output is 425 V peak. This includes any combination of voltage, voltage offset, and function shape values. Therefore, the maximum value that can be programmed depends on the peak-to-rms ratio of the selected waveform. For a sinewave, the maximum voltage that can be programmed is 300 V rms.

NOTE: For HP models 6814B, 6834B and 6843A, you cannot program a voltage that produces a

Returned Parameters

A sinewave is output A squarewave is output The output is a clipped sinewave. Both positive and negative peak amplitudes are clipped at a value determined by the FUNCtion:CSINusoid command. The output shape is described by one of the user-defined waveform tables.

higher volt-second on the output than a 300 Vrms sinewave.

Command Syntax

Parameters *RST Value

Examples

Query Syntax

Related Commands

[SOURce:]FUNCtion[:SHAPe][:IMMediate] <shape> SINusoid | SQUare | CSINusoid | <table> SINusoid

FUNC SIN FUNC TABLE1

[SOURce:]FUNCtion[:SHAPe][:IMMediate]? <CRD> FUNC MODE FUNC TRIG VOLT

Language Dictionary - 3

FUNCtion:MODE

This command determines how the waveform shape is controlled during a triggered output transient. The choices are:

FIXed STEP

PULSe LIST

Returned Parameters

The waveform shape is unaffected by a triggered output transient. The waveform shape is programmed to the value set by FUNCtion:TRIGgered when a triggered transient occurs. The waveform shape is changed to the value set by FUNCtion:TRIGgered for a duration determined by the pulse commands. The waveform shape is controlled by the waveform shape list when a triggered transient occurs.

Command Syntax

Parameters *RST Value

Examples

Query Syntax

Related Commands

[SOURce:]FUNCtion[:SHAPe]:MODE <mode> FIXed | STEP | PULSe | LIST FIXed

FUNC:MODE FIX

[SOURce:]FUNCtion[:SHAPe]:MODE? <CRD> FUNC FUNC:TRIG

FUNCtion:TRIGgered

This command selects the shape of the output voltage waveform when a triggered step or pulse transient occurs. The parameters are:

SINusoid SQUare CSINusoid

<table>

NOTE: For HP models 6814B, 6834B and 6843A, you cannot program a voltage that produces a

higher volt-second on the output than a 300 Vrms sinewave.

Command Syntax

Parameters *RST Value

Examples

Query Syntax

Returned Parameters

Related Commands

[SOURce:]FUNCtion[:SHAPe]:TRIGgered <shape> SINusoid | SQUare | CSINusoid | <table> SINusoid

FUNC:TRIG SIN FUNC:TRIG TABLE1

[SOURce:]FUNCtion[:SHAPe]:TRIGgered? <CRD> FUNC FUNC MODE VOLT

3 - Language Dictionary

FUNCtion:CSINusoid

This command sets the clipping level when a clipped sine output waveform is selected. The clipping characteristics can be specified in two ways:

u The clipping level is expressed as a percentage of the peak amplitude at which clipping occurs.

The range is 0 to 100 percent. These are the default units when the optional THD suffix is not sent.

u The clipping level is expressed at the percentage of total harmonic distortion in the output

voltage. The range is 0 to 43 percent. The optional THD suffix is sent to program in these units.

Command Syntax

Parameters *RST Value

Examples

Query Syntax

Returned Parameters

Related Commands

[SOURce:]FUNCtion[:SHAPe]:CSINusoid <Nrf> [THD] 0 to 100% | 0 to 43% THD 100% | 0% THD (no clipping)

FUNC:CSIN 80 FUNC:CSIN 10 THD

[SOURce:]FUNCtion[:SHAPe]:CSINusoid? <NR3> FUNC FUNC MODE

Language Dictionary - 3

Source Subsystem (List)

This subsystem controls the generation of complex sequences of output changes with rapid, precise timing and synchronized with internal or external signals. Each subsystem command for which lists can be generated has an associated list of values that specify the output at each list step. LIST:COUNt determines how many times the sequences through a list before that list is completed. LIST:DWELl specifies the time interval that each value (point) of a list is to remain in effect. LIST:STEP detemines if a trigger causes a list to advance only to its next point or to sequence through all of its points.

All active subsystems that have their modes set to LIST must have the same number of points (up to

100), or an error is generated when the first list point is triggered. The only exception is a list consisting of only one point. Such a list is treated as if it had the same number of points as the other lists, with all of the implied points having the same value as the one specified point. All list point data is stored in nonvolatile memory.

NOTE: MODE commands such as VOLTage:MODE LIST are used to activate lists for specific

functions. However, the LIST:DWELl command is active whenever any function is set to list mode. Therefore, LIST:DWELl must always be set either to one point, or to the same number of points as the active list.

Subsystem Syntax

[SOURce:]

LIST

:COUNt <n> | INFinity Sets the list repeat count :CURRent <n> {,<n>} Sets the peak current limit list

:POINts? Returns the number of peak current limit list points

:DWELl <n> {,<n>} Sets the list of dwell times

:POINts? Returns the number of dwell list points

:FREQuency

[:LEVel] <n> {,<n>} Sets the frequency list

:POINts? Returns the number of frequency points :SLEW <n> {,<n>} Sets the frequency slew list

:POINts? Returns the number of frequency slew points

:PHASe <n> {,<n>} Sets the phase list

:POINts? Returns the number of phase list points

:SHAPe <shape> {,<shape>} Sets the waveform shape list

:POINts? Returns the number of shape list points

:STEP <step> Specifies how the list responds to triggers (ONCE | AUTO) :TTLTrg <bool> {,<bool>} Defines the output marker list

:POINts? Returns the number of output marker list points

:VOLTage

[:LEVel] <n> {,<n>} Sets the voltage list

:POINts? Returns the number of voltage level points :SLEW <n> {,<n>} Sets the voltage slew list

:POINts? Returns the number of voltage slew points :OFFSet <n> {,<n>} Sets the voltage offset list

:POINts? Returns the number of voltage offset points

:SLEW <n> {,<n>} Sets the offset voltage slew list

:POINts? Returns the number of offset voltage slew points

3 - Language Dictionary

LIST:COUNt

This command sets the number of times that the list is executed before it is completed. The command accepts parameters in the range 1 through 9.9E37, but any number greater than 2E9 is interpreted as infinity. Use INFinity to execute a list indefinitely.

Command Syntax

Parameters *RST Value

Examples

Query Syntax

Returned Parameters

Related Commands

[SOURce:]LIST:COUNt <NRf+> | INFinity 1 to 9.9E37 | MINimum | MAXimum | INFinity 1

LIST:COUN 3 LIST:COUN INF

[SOURce:]LIST:COUNt? <NR3> LIST:CURR LIST:FREQ LIST:TTLT LIST:VOLT

LIST:CURRent

HP 6811B, HP 6812B, HP 6813B Only

This command sets the sequence of peak output current list points. The current points are given in the command parameters, which are separated by commas. The order in which the points are entered determines the sequence in which they are output when a list is triggered. Changing list data while a subsystem is in list mode generates an implied ABORt.

Command Syntax

Parameters

Unit

Examples

Query Syntax

Returned Parameters

Related Commands

[SOURce:]LIST:CURRent <NRf+> {,<NRf+>} refer to Specifications Table in User’s Guide A (peak current)

LIST:CURR 2.5,3.0,3.5 LIST:CURR MAX,3.5,2.5,MIN

[SOURce:]LIST:CURRent? <NR3> {,<NR3>} LIST:CURR:POIN? LIST:COUN LIST:DWEL LIST:STEP

LIST:CURRent:POINts?

HP 6811B, HP 6812B, HP 6813B Only

This query returns the number of points specified in LIST:CURRent. Note that it returns only the total number of points, not the point values.

Query Syntax

Returned Parameters

Examples

Related Commands

[SOURce:]LIST:CURRent:POINTs? <NR1>

LIST:CURR:POIN?

LIST:CURR

Language Dictionary - 3

LIST:DWELl

This command sets the sequence of list dwell times. Each value represents the time in seconds that the output will remain at the particular list step point before completing the step. At the end of the dwell time, the output of the depends upon the following conditions:

u If LIST:STEP AUTO has been programmed, the output automatically changes to the next point

in the list.

u If LIST:STEP ONCE has been programmed, the output remains at the present level until a

trigger sequences the next point in the list.

The order in which the points are entered determines the sequence in which they are output when a list is triggered. Changing list data while a subsystem is in list mode generates an implied ABORt.

Command Syntax

Parameters

Unit

Examples

Query Syntax

Returned Parameters

Related Commands

[SOURce:]LIST:DWELl <NRf+> {,<NRf+>} 3-phase models: 0 to 1.07533E6 | MINimum | MAXimum 1-phase models: 0 to 4.30133E5 | MINimum | MAXimum S (seconds)

LIST:DWEL 2.5,1.5,.5

[SOURce:]LIST:DWELl? <NR3> {,<NR3>} LIST:CURR LIST:FREQ LIST:TTLT LIST:VOLT

LIST:DWELl:POINts?

This query returns the number of points specified in LIST:DWELl. Note that it returns only the total number of points, not the point values.

Query Syntax

Returned Parameters

Examples

Related Commands

[SOURce:]LIST:DWELl:POINTs? <NR1>

LIST:DWEL:POIN?

LIST:DWEL

LIST:FREQuency

This command sets the sequence of frequency list points. The frequency points are given in the command parameters, which are separated by commas. The order in which the points are entered determines the sequence in which they are output when a list is triggered. Changing list data while a subsystem is in list mode generates an implied ABORt.

Command Syntax

Parameters

Unit

Examples

Query Syntax

Returned Parameters

Related Commands

[SOURce:]LIST:FREQuency[:LEVel] <NRf+> {,<NRf+>} refer to Specifications Table in User’s Guide HZ (hertz)

LIST:FREQ 55,60,65

[SOURce:]LIST:FREQuency[:LEVel]? <NR3> {,<NR3>} LIST:FREQ:POIN? LIST:COUN LIST:DWEL LIST:STEP

3 - Language Dictionary

LIST:FREQuency:POINts?

This query returns the number of points specified in LIST:FREQuency. Note that it returns only the total number of points, not the point values.

Query Syntax

Returned Parameters

Examples

Related Commands

[SOURce:]LIST:FREQuency[:LEVel]:POINTs? <NR1>

LIST:FREQ:POIN?

LIST:FREQ

LIST:FREQuency:SLEW

This command specifies the output frequency slew list points. The slew points are given in the command parameters, which are separated by commas. The order in which the points are entered determines the sequence in which they are output when a list is triggered. Changing list data while a subsystem is in list mode generates an implied ABORt.

Command Syntax

Parameters

Unit

Examples

Query Syntax

Returned Parameters

Related Commands

[SOURce:]LIST:FREQuency:SLEW <NRf+> | INF {,<NRf+> | INF} 0 to 9.9E37 | MAXimum | MINimum | INFinity HZ (hertz per second)

LIST:FREQ:SLEW 10,20,1E2

[SOURce:]LIST:FREQuency:SLEW? <NR3> {,<NR3>} LIST:FREQ:SLEW:POIN? LIST:COUN LIST:DWEL LIST:STEP

LIST:FREQuency:SLEW:POINts?

This query returns the number of points specified in LIST:FREQuency:SLEW. Note that it returns only the total number of points, not the point values.

Query Syntax

Returned Parameters

Examples

Related Commands

[SOURce:]LIST:FREQuency:SLEW:POINTs? <NR1>

LIST:FREQ:SLEW:POIN?

LIST:FREQ:SLEW

LIST:PHASe

Phase Selectable

This phase selectable command sets the sequence of phase list points. The phase points are given in the command parameters, which are separated by commas. The order in which the points are entered determines the sequence in which they are output when a list is triggered. Changing list data while a subsystem is in list mode generates an implied ABORt.

Command Syntax

Parameters

Examples

Query Syntax

Returned Parameters

Related Commands

[SOURce:]LIST:PHASe <NRf+> {,<NRf+>} –360 through +360 (degrees) | MAXimum | MINimum

LIST:PHAS 90,120,150

[SOURce:]LIST:PHAS? <NR3> {,<NR3>} LIST:FREQ:POIN? LIST:COUN LIST:DWEL LIST:STEP

Language Dictionary - 3

LIST:PHASe:POINts?

This query returns the number of points specified in LIST:PHASe. Note that it returns only the total number of points, not the point values.

Query Syntax

Returned Parameters

Examples

Related Commands

[SOURce:]LIST:PHASe:POINTs? <NR1>

LIST:PHAS:POIN?

LIST:PHAS

LIST:SHAPe

This command sets the sequence of the waveform shape entries. The order in which the shapes are given determines the sequence in which the list of shape will be output when a list is triggered. Changing list data while a subsystem is in list mode generates an implied ABORt. The following shapes may be specified:

SINusoid SQUare CSINusoid

<table>

NOTE: For HP models 6814B, 6834B and 6843A, you cannot program a voltage that produces a

higher volt-second on the output than a 300 Vrms sinewave.

Command Syntax

Parameters

Examples

Query Syntax

Returned Parameters

Related Commands

[SOURce:]LIST[:SHAPe] <shape> {,<shape>} SINusoid | SQUare | CSINusoid | <table>

LIST:SHAP

[SOURce:]LIST:SHAPe? <CRD> {,<CRD>} LIST:SHAP:POIN? LIST:COUN LIST:DWEL LIST:STEP LIST:VOLT LIST:VOLT:OFFS

LIST:SHAPe:POINts?

This query returns the number of points specified in LIST:SHAP. Note that it returns only the total number of points, not the point values.

Query Syntax

Returned Parameters

Examples

Related Commands

[SOURce:]LIST:SHAPe:POINTs? <NR1>

LIST:SHAP:POIN?

LIST:SHAP

3 - Language Dictionary

LIST:STEP

This command specifies how the list sequencing responds to triggers. The following parameters may be specified:

ONCE AUTO

Returned Parameters

causes the list to advance only one point after each trigger. Triggers that arrive during a dwell delay are ignored causes the entire list to be output sequentially after the starting trigger, paced by its dwell delays. As each dwell delay elapses, the next point is immediately output

Command Syntax

Parameters *RST Value

Examples

Query Syntax

Related Commands

[SOURce:]LIST:STEP <step> ONCE | AUTO AUTO

LIST:STEP ONCE

[SOURce:]LIST:STEP? <CRD> LIST:COUN LIST:DWEL

LIST:TTLTrg

This command sets the sequence of Trigger Out list points. Each point which is set ON will cause a pulse to be output at Trigger Out when that list step is reached. Those entries which are set OFF will not generate Trigger Out pulses.

The order in which the list points are given determines the sequence in which Trigger Out pulses will be output when a list is triggered. Changing list data while a subsystem is in list mode generates an implied ABORt.

Command Syntax

Parameters

Examples

Query Syntax

Returned Parameters

Related Commands

[SOURce:]LIST:TTLTrg <bool> {,<bool>} 0 | 1 | OFF | ON

LIST:TTLT 1,0,1 LIST:TTLT ON,OFF,ON

[SOURce:]LIST:TTLTrg? 0 | 1 {,0 | 1} LIST:TTLT:POIN? LIST:COUN LIST:DWEL LIST:STEP OUTP:TTLT OUTP:TTLT:SOUR

LIST:TTLTrg:POINts?

This query returns the number of points specified in LIST:TTLT. Note that it returns only the total number of points, not the point values.

Query Syntax

Returned Parameters

Examples

Related Commands

[SOURce:]LIST:TTLTrg:POINTs? <NR1>

LIST:TTLT:POIN?

LIST:TTLT

Language Dictionary - 3

LIST:VOLTage

Phase Selectable

This command specifies the output voltage points in a list. The voltage points are given in the command parameters, which are separated by commas. The order in which the points are entered determines the sequence in which they are output when a list is triggered. Changing list data while a subsystem is in list mode generates an implied ABORt.

NOTE: For HP models 6814B, 6834B and 6843A, you cannot program a voltage that produces a

higher volt-second on the output than a 300 Vrms sinewave.

Command Syntax

Parameters

Unit

Examples

Query Syntax

Returned Parameters

Related Commands

[SOURce:]LIST:VOLTage[:LEVel] <NRf+> {,<NRf+>} For sinewaves: 0 to 300 | MAXimum | MINimum V (rms voltage)

LIST:VOLT 115,126,120 LIST:VOLT MAX,120,MIN

[SOURce:]LIST:VOLTage[:LEVel]? <NR3> {,<NR3>} LIST:VOLT:POIN? LIST:COUN LIST:DWEL LIST:STEP LIST:VOLT:SLEW LIST:VOLT:OFFS

LIST:VOLTage:POINts?

This query returns the number of points specified in LIST:VOLTage. Note that it returns only the total number of points, not the point values.

Query Syntax

Returned Parameters

Examples

Related Commands

[SOURce:]LIST:VOLTage[:LEVel]:POINTs? <NR1>

LIST:VOLT:POIN?

LIST:VOLT

LIST:VOLTage:SLEW

Phase Selectable

This command specifies the output voltage slew list points. The slew points are given in the command parameters, which are separated by commas. The order in which the points are entered determines the sequence in which they are output when a list is triggered. Changing list data while a subsystem is in list mode generates an implied ABORt.

Command Syntax

Parameters

Unit

Examples

Query Syntax

Returned Parameters

Related Commands

[SOURce:]LIST:VOLTage:SLEW <NRf+> | INF {,<NRf+> | INF} 0 to 9.9E37 | MAXimum | MINimum | INFinity V (volts per second)

LIST:VOLT:SLEW 10,20,1E2

[SOURce:]LIST:VOLTage:SLEW? <NR3> {,<NR3>} LIST:VOLT:SLEW:POIN? LIST:COUN LIST:DWEL LIST:STEP

3 - Language Dictionary

LIST:VOLTage:SLEW:POINts?

This query returns the number of points specified in LIST:VOLTage:SLEW. Note that it returns only the total number of points, not the point values.

Query Syntax

Returned Parameters

Examples

Related Commands

[SOURce:]LIST:VOLTage:SLEW:POINTs? <NR1>

LIST:VOLT:SLEW:POIN?

LIST:VOLT:SLEW

LIST:VOLTageOFFSet

HP 6811B, HP 6812B, HP 6813B Only

This command specifies the dc offset points in a list. The offset points are given in the command parameters, which are separated by commas. The order in which the points are entered determines the sequence in which they are output when a list is triggered. Changing list data while a subsystem is in list mode generates an implied ABORt.

Command Syntax

Parameters

Unit

Examples

Query Syntax

Returned Parameters

Related Commands

[SOURce:]LIST:VOLTage:OFFSet <NRf+> {,<NRf+>} –425 to +425 | MAXimum | MINimum V (dc voltage)

LIST:VOLT:OFFS 50,75,100

[SOURce:]LIST:VOLTage:OFFSet? <NR3> {,<NR3>} LIST:VOLT:OFFS:POIN? LIST:COUN LIST:DWEL LIST:STEP LIST:VOLT:SLEW

LIST:VOLTage:OFFSet:POINts?

HP 6811B, HP 6812B, HP 6813B Only

This query returns the number of points specified in LIST:VOLTage:OFFSet. Note that it returns only the total number of points, not the point values.

Query Syntax

Returned Parameters

Examples

Related Commands

[SOURce:]LIST:VOLTage:OFFSet:POINTs? <NR1>

LIST:VOLT:OFFS:POIN?

LIST:VOLT:OFFS

Language Dictionary - 3

LIST:VOLTage:OFFSet:SLEW

HP 6811B, HP 6812B, HP 6813B Only

This command specifies the dc offset slew list points. The slew points are given in the command parameters, which are separated by commas. The order in which the points are entered determines the sequence in which they are output when a list is triggered. Changing list data while a subsystem is in list mode generates an implied ABORt.

Command Syntax

Parameters

Unit

Examples

Query Syntax

Returned Parameters

Related Commands

[SOURce:]LIST:VOLTage:OFFSet:SLEW <NRf+> | INF {,<NRf+> | INF} 0 to 9.9E37 | MAXimum | MINimum | INFinity V (volts per second)

LIST:VOLT:OFFS:SLEW 10,20,1E2

[SOURce:]LIST:VOLTage:OFFSet:SLEW? <NR3> {,<NR3>} LIST:VOLT:SLEW:POIN? LIST:COUN LIST:DWEL LIST:STEP

LIST:VOLTage:OFFSet:SLEW:POINts?

HP 6811B, HP 6812B, HP 6813B Only

This query returns the number of points specified in LIST:VOLTage:OFFSet:SLEW. Note that it returns only the total number of points, not the point values.

Query Syntax

Returned Parameters

Examples

Related Commands

[SOURce:]LIST:VOLTage:OFFSet:SLEW:POINTs? <NR1>

LIST:VOLT:OFFSet:SLEW:POIN?

LIST:VOLT:OFFS

3 - Language Dictionary

Source Subsystem (Phase)

This subsystem programs the output phases of the . When phase commands are used to program singlephase units, the only discernible effect in using the phase commands is to cause an instantaneous shift in the output waveform phase.

Subsystem Syntax

[SOURce:]

PHASe

[:IMMediate] <n> Sets the output phase :MODE <mode> Sets the phase mode (FIX | STEP | PULS | LIST) :TRIGgered <n> Sets the triggered phase (step or pulse mode only)

PHASe

Phase Selectable

This command sets the phase of the output voltage waveform relative to an internal reference. The phase angle is programmed in degrees. Positive phase angles are used to program the leading phase, and negative phase angles are used to program the lagging phase.

The PHASe command is not influenced by INSTrument:COUPle ALL. It applies only to the current output phase selected by INSTrument:NSELect.

Command Syntax

Parameters *RST Value

Examples

Query Syntax

Returned Parameters

Related Commands

[SOURce:]PHASe[:ADJust|:IMMediate] <NRf+> –360 through +360 (degrees) | MAXimum | MINimum phase 1 = 0, phase 2 = 240, phase 3 = 120

PHAS 90 PHAS MAX

[SOURce:]PHASe[:ADJust|:IMMediate]? <NR3> PHAS:MODE PHASE:TRIG

Language Dictionary - 3

PHASe:MODE

Phase Selectable

This command determines how the output phase is controlled during a triggered output transient. The choices are:

FIXed STEP

PULSe LIST

Returned Parameters

The output phase is unaffected by a triggered output transient. The output phase is programmed to the value set by PHASe:TRIGgered when a triggered transient occurs. The output phase is changed to the value set by PHASe:TRIGgered for a duration determined by the pulse commands. The output phase is controlled by the phase list when a triggered transient occurs.

Command Syntax

Parameters *RST Value

Examples

Query Syntax

Related Commands

[SOURce:]PHASe:MODE <mode> FIXed | STEP | PULSe | LIST FIXed

PHAS:MODE LIST PHAS:MODE FIX

[SOURce:]PHASe:MODE? <CRD> PHAS PHAS:TRIG

PHASe:TRIGgered

Phase Selectable

This command sets the output phase when a triggered step or pulse transient occurs. The phase of the output voltage waveform is expressed relative to an internal reference. The phase angle is programmed in degrees. Positive phase angles are used to program the leading phase, and negative phase angles are used to program the lagging phase.

The PHASe command is not influenced by INSTrument:COUPle ALL. It applies only to the current output phase selected by INSTrument:NSELect.

Command Syntax

Parameters *RST Value

Examples

Query Syntax

Returned Parameters

Related Commands

[SOURce:]PHASe:TRIGgered <NRf+> –360 through +360 (degrees) | MAXimum | MINimum triggered phase 1 = 0, triggered phase 2 = 240, triggered phase 3 = 120

PHAS:TRIG 90 PHAS:TRIG MAX

[SOURce:]PHASe:TRIGgered? <NR3> PHAS:MODE PHASE

3 - Language Dictionary

Source Subsystem (Pulse)

This subsystem controls the generation of output pulses. The PULSe:DCYCle, PULSe:HOLD, PULSe:PERiod, and PULSe:WIDTh commands are coupled, which means that the values programmed by any one of these commands can be affected by the settings of the others. Refer to the tables under PULSe:HOLD for an explanation of how these commands affect each other.

Subsystem Syntax

[SOURce:]

PULSe

:COUNt <n> | INFinity Selects transient pulse count :DCYCle <n> Selects pulse duty cycle :HOLD <parameter> Selects parameter that is held constant (WIDTh | DCYCle) :PERiod <n> Selects pulse period when the count is greater than 1 :WIDTh <n> Selects width of the pulses

PULSe:COUNt

This command sets the number of pulses that are output when a triggered output transient occurs. The command accepts parameters in the range 1 through 9.9E37. If INFinity or MAXimum is sent, the output pulse repeats indefinitely.

Command Syntax

Parameters *RST Value

Examples

Query Syntax

Returned Parameters

Related Commands

[SOURce:]PULSe:COUNt <Nrf+> | INFinity 1 to 9.9E37 | MINimum | MAXimum | INFinity 1

PULS:COUN 3 PULS:COUN MIN PULS:COUN INF

[SOURce:]PULSe:COUNt? <NR3> PULS:DCYC PULS:HOLD PULS:PER PULS:PER

PULSe:DCYCle

This command sets the duty cycle of the triggered output pulse. The duty cycle units are specified in percent.

Command Syntax

Parameters *RST Value

Examples

Query Syntax

Returned Parameters

Related Commands

[SOURce:]PULSe:DCYCle <Nrf+> 0 to 100 (percent) | MINimum | MAXimum 50

PULS:DCYC 75 PULS:DCYC MAX

[SOURce:]PULSe:DCYCle? <NR3> PULS:COUN PULS:HOLD PULS:PER PULS:WIDT

Language Dictionary - 3

PULSe:HOLD

This command specifies whether the pulse width or the duty cycle is to be held constant when the pulse period changes. The following tables describe how the duty cycle, period, and width are affected when one, two, or all three parameters are set in a single program message.

Command Syntax

Parameters *RST Value

Examples

Query Syntax

Returned Parameters

Related Commands

Parameter Set Action

DCYCle PERod WIDTh

Set Sets WIDTh. If WIDTh < PERiod, recalculates DCYCle; otherwise

Set Sets PERiod. If WIDTh < PERiod, recalculates DCYCle; otherwise

Set Set Sets WIDTh. If WIDTh < PERiod, sets the PERiod and

Set Sets DCYCle and recalculates the PERiod. Set Set Sets DCYCle and WIDth and recalculates the PERiod. Set Set Sets DCYCle and PERiod and recalculates the WIDTh. Set Set Set Sets WIDTh. If WIDTh < PERiod, sets the PERiod and

[SOURce:]PULSe:HOLD <parameter> WIDTh | DCYCle WIDTh

PULS:HOLD DCYC

[SOURce:]PULSe:HOLD? <CRD> PULS:COUN PULS:DCYC PULS:PER PULS:WIDT

PULSe:HOLD = WIDTh

recalculates the PERiod and DCYCle.

recalculates DCYCle; otherwise recalculates the PERiod and DCYCle.

PULSe:HOLD = DCYCle

Parameter Set Action

DCYCle PERod WIDTh

Set Sets WIDTh and recalculates the PERiod. Set Sets PERiod and recalculates the WIDTh. Set Set Sets WIDTh. If WIDTh < PERiod, sets the PERiod and

recalculates DCYCle; otherwise recalculates the PERiod and

DCYCle. Set Sets DCYCle and recalculates the PERiod. Set Set Sets DCYCle and WIDth and recalculates the PERiod. Set Set Sets DCYCle and PERiod and recalculates the WIDTh. Set Set Set Sets WIDTh. If WIDTh < PERiod, sets the PERiod and

recalculates DCYCle; otherwise recalculates the PERiod and

DCYCle.

3 - Language Dictionary

PULSe:PERiod

This command sets the period of a triggered output transient The command parameters are modeldependent.

Command Syntax

Parameters

Unit

*RST Value

Examples

Query Syntax

Returned Parameters

Related Commands

[SOURce:]PULSe:PERiod <NRf+> 3-phase models: 0 to 1.07533E6 | MINimum | MAXimum 1-phase models: 0 to 4.30133E5 | MINimum | MAXimum S (seconds) .03333

PULS:PER 0.001 PULS:PER MIN

[SOURce:]PULSe:PERiod? <NR3> PULS:COUN PULS:DCYC PULS:PER PULS:HOLD

PULSe:WIDTh

This command sets the width of a transient output pulse. The command parameters are modeldependent.

Command Syntax

Parameters

Unit

*RST Value

Examples

Query Syntax

Returned Parameters

Related Commands

[SOURce:]PULSe:WIDTh <NRf+> 3-phase models: 0 to 1.07533E6 | MINimum | MAXimum 1-phase models: 0 to 4.30133E5 | MINimum | MAXimum S (seconds) .01667 (equals the period of a single 60 Hz cycle)

PULS:WIDT 0.001 PULS:WIDT MIN

[SOURce:]PULSe:WIDTh? <NR3> PULS:COUN PULS:DCYC PULS:PER PULS:HOLD

Source Subsystem (Voltage)

This subsystem programs the output voltage of the ac source.

Subsystem Syntax

[SOURce:]

VOLTage

[:LEVel]

[:IMMediate]

[:AMPLitude] <n> Sets the ac rms voltage amplitude

:TRIGgered

[:AMPLitude] <n> Sets the transient voltage amplitude :MODE <mode> Sets the voltage mode (FIX | STEP | PULS | LIST) :OFFSet

[:IMMediate] <n> Sets the dc offset voltage :MODE <mode> Sets the offset mode (FIX | STEP | PULS | LIST) :TRIGgered <n> Sets the transient dc offset voltage :SLEW

[:IMMediate] <n> | INFinity Sets the voltage slew rate

:MODE <mode> Sets voltage slew mode (FIX | STEP | PULS | LIST)

:TRIGgered <n> | INFinity Sets the transient voltage slew rate :PROTection

[:LEVel] <n> Sets the overvoltage protection threshold

:STATe <bool> Sets the overvoltage protection state :RANGe <n> Sets the voltage range :SENSe |ALC

:DETector RTIMe | RMS Sets the sense detector for the voltage control loop

:SOURce INTernal | EXTernal Sets voltage sense source :SLEW

[:IMMediate] <n> | INFinity Sets the voltage slew rate

:MODE <mode> Sets voltage slew mode (FIX | STEP | PULS | LIST)

:TRIGgered <n> | INFinity Sets the transient voltage slew rate

Language Dictionary - 3

3 - Language Dictionary

VOLTage

Phase Selectable

This command programs the ac rms output voltage level of the ac source. The maximum peak voltage that the ac source can output is 425 V peak. This includes any combination

of voltage, voltage offset, and function shape values. Therefore, the maximum value that can be programmed depends on the peak-to-rms ratio of the selected waveform. For a sinewave, the maximum voltage that can be programmed is 300 V rms.

NOTE: For HP models 6814B, 6834B and 6843A, you cannot program a voltage that produces a

higher volt-second on the output than a 300 Vrms sinewave.

Command Syntax

Parameters

Unit

*RST Value

Examples

Query Syntax

Returned Parameters

Related Commands

[SOURce:]VOLTage[:LEVel][:IMMediate][:AMPLitude] <NRf+> For sinewaves: 0 to 300 | MAXimum | MINimum V (rms voltage) 1

VOLT 115 VOLT:LEV 250

[SOURce:]VOLTage[:LEVel][:IMMediate][:AMPLitude]? <NR3> VOLT:MODE VOLT:TRIG VOLT:OFFS FUNC:SHAP

VOLTage:TRIGgered

Phase Selectable

This command selects the ac rms amplitude that the output waveform will be set to during a triggered step or pulse transient.

NOTE: For HP models 6814B, 6834B and 6843A, you cannot program a voltage that produces a

higher volt-second on the output than a 300 Vrms sinewave.

Command Syntax

Parameters

Unit

*RST Value

Examples

Query Syntax

Returned Parameters

Related Commands

[SOURce:]VOLTage[:LEVel]:TRIGgered[:AMPLitude] <NRf+> For sinewaves: 0 to 300 | MAXimum | MINimum V (rms voltage) 1

VOLT:TRIG 120 VOLT:LEV:TRIG 150

[SOURce:]VOLTage[:LEVel]:TRIGgered[:AMPLitude]? <NR3> (if the trigger level is not programmed, the immediate

level is returned)

VOLT VOLT:MODE VOLT:OFFS FUNC:SHAP

Language Dictionary - 3

VOLTage:MODE

Phase Selectable

This command determines how the ac rms output voltage is controlled during a triggered output transient. The choices are:

FIXed STEP

PULSe LIST

Returned Parameters

The voltage is unaffected by a triggered output transient. The voltage is programmed to the value set by VOLTage:TRIGgered when a triggered transient occurs. The voltage is changed to the value set by VOLTage:TRIGgered for a duration determined by the pulse commands. The voltage is controlled by the voltage list when a triggered transient occurs.

Command Syntax

Parameters *RST Value

Examples

Query Syntax

Related Commands

[SOURce:]VOLTage:MODE <mode> FIXed | STEP | PULSe | LIST FIXed

VOLT:MODE FIX VOLT:MODE:LIST

[SOURce:]VOLTage:MODE? <CRD> VOLT VOLT:TRIG

VOLTage:OFFSet

HP 6811B, HP 6812B, HP 6813B Only

This command programs the dc output voltage level of the ac source. The maximum peak voltage that the ac source can output is 425 V peak. This includes any combination

NOTE: The OUTPut:COUPling must be set to DC to get non-zero dc output.

Command Syntax

Parameters

Unit

*RST Value

Examples

Query Syntax

Returned Parameters

Related Commands

[SOURce:]VOLTage:OFFSet[:IMMediate] <NRf+> –425 to +425 | MAXimum | MINimum V (dc voltage) 0

VOLT:OFFS 100

[SOURce:]VOLTage:OFFSet[:IMMediate]? <NR3> VOLT:OFFS:MODE OUTP:COUP FUNC:SHAP

3 - Language Dictionary

VOLTage:OFFSet:MODE

HP 6811B, HP 6812B, HP 6813B Only

This command determines how the dc offset voltage is controlled during a triggered output transient. The choices are:

FIXed STEP

PULSe LIST

Returned Parameters

The offset is unaffected by a triggered output transient. The offset is programmed to the value set by VOLTage:OFFSet:TRIGgered when a triggered transient occurs. The offset is changed to the value set by VOLTage:OFFSet:TRIGgered for a duration determined by the pulse commands. The offset is controlled by the voltage list when a triggered transient occurs.

Command Syntax

Parameters *RST Value

Examples

Query Syntax

Related Commands

[SOURce:]VOLTage:OFFSet:MODE <mode> FIXed | STEP | PULSe | LIST FIXed

VOLT:OFFS:MODE FIX VOLT:OFFS:MODE:LIST

[SOURce:]VOLTage:OFFSet:MODE? <CRD> VOLT:OFFS VOLT:OFFS:TRIG

VOLTage:OFFSet:TRIGgered

HP 6811B, HP 6812B, HP 6813B Only

This command selects the dc offset that the output waveform will be set to during a triggered step or pulse transient.

NOTE: The OUTPut:COUPling must be set to DC to get non-zero dc output.

Command Syntax

Parameters

Unit

*RST Value

Examples

Query Syntax

Returned Parameters

Related Commands

[SOURce:]VOLTage:OFFSet:TRIGgered <NRf+> –425 to +425 | MAXimum | MINimum V (dc voltage) 0

VOLT:OFFS:TRIG 50 VOLT:OFFS:TRIG INF

[SOURce:]VOLTage:OFFSet:TRIGgered? <NR3> VOLT:OFFS:MODE OUTP:COUP

Language Dictionary - 3

VOLTage:OFFSet:SLEW

HP 6811B, HP 6812B, HP 6813B Only

This command sets the slew rate for all programmed changes in dc output voltage. A parameter of MAXimum or INFinity sets the slew to its maximum possible rate. The SCPI representation for INFinity is

9.9E37.

Command Syntax

Parameters

Unit

*RST Value

Examples

Query Syntax

Returned Parameters

Related Commands

[SOURce:]VOLTage:OFFSet:SLEW[:IMMediate] <NRf+> | INFinity 0 to 9.9E37 | MAXimum | MINimum | INFinity V (volts per second) INFinity

VOLT:OFFS:SLEW 50 VOLT:OFFS:SLEW MAX

[SOURce:]VOLTage:OFFSet:SLEW[:IMMediate]? <NR3> VOLT:OFFS:MODE OUTP:COUP

VOLTage:OFFSet:SLEW:MODE

HP 6811B, HP 6812B, HP 6813B Only

This command determines how the dc offset slew rate is controlled during a triggered output transient. The choices are:

FIXed STEP

PULSe LIST

The offset slew rate is unaffected by a triggered output transient. The offset slew rate is programmed to the value set by VOLTage:OFFSet:SLEW:TRIGgered when a triggered transient occurs. The offset slew rate is changed to the value set by VOLTage:OFFSet:SLEW:TRIGgered for a duration determined by the pulse commands. The offset slew rate is controlled by the voltage offset slew list when a triggered transient occurs.

Command Syntax

Parameters *RST Value

Examples

Query Syntax

Returned Parameters

Related Commands

[SOURce:]VOLTage:OFFSet:SLEW:MODE <mode> FIXed | STEP | PULSe | LIST FIXed

VOLT:OFFS:SLEW:MODE STEP

[SOURce:]VOLTage:OFFSet:SLEW:MODE? <CRD> VOLT:OFFS:SLEW VOLT:OFFS:SLEW:TRIG

3 - Language Dictionary

VOLTage:OFFSet:SLEW:TRIGgered

HP 6811B, HP 6812B, HP 6813B Only

This command selects the dc offset slew rate that will be set during a triggered step or pulse transient. A parameter of MAXimum or INFinity sets the slew to its maximum possible rate. The SCPI representation for infinity is 9.9E37.

Command Syntax

Parameters

Unit

*RST Value

Examples

Query Syntax

Returned Parameters

Related Commands

[SOURce:]VOLTage:OFFSet:SLEW:TRIGgered <NRf+> | INFinity 0 to 9.9E37 | MAXimum | MINimum | INFinity V (volts per second) INFinity

VOLT:OFFS:SLEW:TRIG 50 VOLT:OFFS:SLEW:TRIG MAX

[SOURce:]VOLTage:OFFSet:SLEW:TRIGgered? <NR3> VOLT:OFFS:SLEW VOLT:OFFS:SLEW:MODE

VOLTage:PROTection

Phase Selectable

This command sets the overvoltage protection (OVP) level of the ac source. If the peak output voltage exceeds the OVP level, then the output is disabled and the Questionable Condition status register OV bit is set (see chapter 4 under Programming the Status Registers). An overvoltage condition can be cleared with the OUTPut:PROTection:CLEar command after the condition that caused the OVP trip is removed. The OVP always trips with zero delay and is unaffected by the OUTPut:PROTection:DELay command.

Command Syntax

Parameters

Unit

*RST Value

Examples

Query Syntax

Returned Parameters

Related Commands

[SOURce:]VOLTage:PROTection[:LEVel] <NRf+> 0 to 500 | MAXimum | MINimum V (peak voltage) MAXimum

VOLT:PROT 400 VOLT:PROT:LEV MAX

[SOURce:]VOLTage:PROTection[:LEVel]? <NR3> OUTP:PROT:CLE OUTP:PROT:DEL

VOLTage:PROTection:STATe

HP 6811B, HP 6812B, HP 6813B Only

This command enables or disables the over-voltage protection feature.

Command Syntax

Parameters *RST Value

Examples

Query Syntax

Returned Parameters

Related Commands

[SOURce:]VOLTage:PROTection:STATe <Bool> 0 | 1 | OFF | ON OFF

VOLT:PROT:STAT 1 VOLT:PROT:STAT ON

[SOURce:]VOLTage:PROTection:STATe? <NR3> VOLT:PROT

Language Dictionary - 3

VOLTage:RANGe

HP 6814B, HP 6834B, HP 6843A Only

Phase Selectable

This command sets the voltage range of the ac source. Two voltage ranges are available: a 150 volt range and a 300 volt range. Sending a parameter greater than 150 selects the 300 volt range, otherwise the 150 volt range is selected.

When the range is set to 150, the maximum rms voltage that can be programmed for a sine wave is 150 volts. For other waveshapes, the maximum programmable voltage may be different, depending on the waveform crest factor.

The VOLTage:RANGe command is coupled with the CURRent command. This means that the maximum current limit that can be programmed at a given time depends on the voltage range setting in which the unit is presently operating. Refer to chapter 4 under "Coupled Commands" for more information.

Command Syntax

Parameters *RST Value

Examples

Query Syntax

Returned Parameters

Related Commands

[SOURce:]VOLTage:RANGe <NRf+> 150 | 300 | MAXimum | MINimum MAXimum

VOLT:RANG 150 VOLT:RANG MIN

[SOURce:]VOLTage:RANGe? <NR3> VOLT

VOLTage:SENSe:DETector VOLTage:ALC:DETector

HP 6811B, HP 6812B, HP 6813B Only

These commands select the type of closed loop feedback that is used by the output power circuits of the ac source. The commands are interchangeable; they both perform the same function. The following closed loop feedbacks can be selected:

RTIMe RMS

Returned Parameters

Related Commands

This feeds the instantaneous output voltage back to the error amplifier and compares it to the reference waveform. This converts the rms output voltage to dc and compares it to a dc reference.

Command Syntax

Parameters *RST Value

Examples

Query Syntax

[SOURce:]VOLTage:SENSe:DETector <type> [SOURce:]VOLTage:ALC:DETector <type> RTIMe | RMS RTIMe

VOLT:SENS:DET RTIM VOLT:ALC:DET RMS

[SOURce:]VOLTage:SENSe:DETector? [SOURce:]VOLTage:ALC:DETector? <CRD> VOLT:SENS:SOUR

3 - Language Dictionary

VOLTage:SENSe:SOURce VOLTage:ALC:SOURce

These commands select the source from which the output voltage is sensed. The commands are interchangeable; they both perform the same function. The following voltage sense sources can be selected:

INTernal EXTernal

Returned Parameters

Related Commands

This senses the voltage at the output of the power amplifier on the inboard side of the output disconnect relay. This senses the output voltage at the rear panel voltage sense terminals, which allows remote voltage sensing at the load.

Command Syntax

Parameters *RST Value

Examples

Query Syntax

[SOURce:]VOLTage:SENSe:SOURce <source> [SOURce:]VOLTage:ALC:SOURce <source> INTernal | EXTernal INTernal

VOLT:SENS:SOUR INT VOLT:ALC:SOUR EXT

[SOURce:]VOLTage:SENSe:SOURce? [SOURce:]VOLTage:ALC:SOURce? <CRD> VOLT:SENS:DET

VOLTage:SLEW

Phase Selectable

This command sets the slew rate for all programmed changes in the ac rms output voltage level of the ac source. A parameter of MAXimum or INFinity sets the slew to its maximum possible rate. The SCPI representation for INFinity is 9.9E37.

Command Syntax

Parameters

Unit

*RST Value

Examples

Query Syntax

Returned Parameters

Related Commands

[SOURce:]VOLTage:SLEW[:IMMediate] <NRf+> | INFinity 0 to 9.9E37 | MAXimum | MINimum | INFinity V (volts per second) INFinity

VOLT:SLEW 50 VOLT:SLEW INF

[SOURce:]VOLTage:SLEW[:IMMediate]? <NR3> VOLT:SLEW:MODE VOLT:SLEW:TRIG

Language Dictionary - 3

VOLTage:SLEW:MODE

Phase Selectable

This command determines how the output voltage slew rate is controlled during a triggered output transient. The choices are:

FIXed STEP

PULSe LIST

Returned Parameters

The slew rate is unaffected by a triggered output transient. The slew rate is programmed to the value set by VOLTage:SLEW:TRIGgered when a triggered transient occurs. The slew rate is changed to the value set by VOLTage:SLEW:TRIGgered for a duration determined by the pulse commands. The slew rate is controlled by the voltage slew list when a triggered transient occurs.

Command Syntax

Parameters *RST Value

Examples

Query Syntax

Related Commands

[SOURce:]VOLTage:SLEW:MODE <mode> FIXed | STEP | PULSe | LIST FIXed

VOLT:SLEW:MODE STEP

[SOURce:]VOLTage:SLEW:MODE? <CRD> VOLT:SLEW VOLT:SLEW:TRIG

VOLTage:SLEW:TRIGgered

Phase Selectable

This command selects the slew rate that will be set during a triggered step or pulse transient. A parameter of MAXimum or INFinity sets the slew to its maximum possible rate. The SCPI representation for infinity is 9.9E37.

Command Syntax

Parameters

Unit

*RST Value

Examples

Query Syntax

Returned Parameters

Related Commands

[SOURce:]VOLTage:SLEW:TRIGgered <NRf+> | INFinity 0 to 9.9E37 | MAXimum | MINimum | INFinity V (volts per second) INFinity

VOLT:SLEW:TRIG 50 VOLT:SLEW:TRIG MAX

[SOURce:]VOLTage:SLEW:TRIGgered? <NR3> VOLT:SLEW VOLT:SLEW:MODE

3 - Language Dictionary

Status Subsystem

This subsystem programs the ac source status registers. The ac source has four groups of status registers; Operation, Questionable, Questionable Instrument ISummary and Standard Event. The Standard Event group is programmed with Common commands. The Operation, Questionable, and Instrument ISummary status groups each consist of the following five registers: Condition Enable Event NTR Filter PTR Filter.

Refer to chapter 4 under “Programming the Status Registers” for more information.

Subsystem Syntax

STATus

:PRESet Presets all enable and transition registers to power-on :OPERation

[:EVENt]? Returns the value of the event register :CONDition? Returns the value of the condition register :ENABle <n> Enables specific bits in the Event register :NTRansition<n> Sets the Negative transition filter :PTRansition<n> Sets the Positive transition filter

:QUEStionable

:ISUMmary

[:EVENt]? Returns the selected phase's event register value :CONDition? Returns the selected phase's condition register value :ENABle <n> Enables specific bits in the selected phase's Event register :NTRansition<n> Sets the selected phase's Negative transition filter :PTRansition<n> Sets the selected Phase's Positive transition filter

STATus:PRESet

This command sets the Enable, PTR, and NTR registers of the status groups to their power-on values. These values are:

Enable Registers:all bits set to 0 (OFF) PTR Registers: all defined bits set to 1 (ON) NTR Registers: all bits set to 0 (OFF)

Command Syntax

Parameters

Examples

STATus:PRESet None

STAT:PRES

Language Dictionary - 3

Bit Configuration of Operation Status Registers

Bit Position 15–9 8 7–6 5 4–1 0 Bit Name not used CV not used WTG not used CAL Bit Weight 256 32 1 CAL = Interface is computing new calibration constants

WTG = Interface is waiting for a trigger. CV = Output voltage is regulated.

STATus:OPERation?

This query returns the value of the Operation Event register. The Event register is a read-only register which holds (latches) all events that are passed by the Operation NTR and/or PTR filter. Reading the Operation Event register clears it.

Query Syntax

Parameters

Examples

Returned Parameters

Related Commands

STATus:OPERation[:EVENt]? None

STAT:OPER:EVEN?

<NR1> (register value) *CLS STAT:OPER:NTR STAT:OPER:PTR

STATus:OPERation:CONDition?

This query returns the value of the Operation Condition register. That is a read-only register which holds the real-time (unlatched) operational status of the ac source.

Query Syntax

Parameters

Examples

Returned Parameters

Related Commands

STATus:OPERation:CONDition? None

STAT:OPER:COND?

<NR1> (register value) STAT:QUES:COND?

STATus:OPERation:ENABle

This command and its query set and read the value of the Operation Enable register. This register is a mask for enabling specific bits from the Operation Event register to set the operation summary bit (OPER) of the Status Byte register. The operation summary bit is the logical OR of all enabled Operation Event register bits.

Command Syntax

Parameters

Default Value

Examples

Query Syntax

Returned Parameters

Related Commands

STATus:OPERation:ENABle <NRf+> 0 to 32767 | MAXimum | MINimum 0

STAT:OPER:ENAB 32 STAT:OPER:ENAB 1

STATus:OPERation:ENABle? <NR1> (register value) STAT:OPER?

3 - Language Dictionary

STATus:OPERation:NTRansition STATus:OPERation:PTRansition

These commands set or read the value of the Operation NTR (Negative-Transition) and PTR (PositiveTransition) registers. These registers serve as polarity filters between the Operation Enable and Operation Event registers to cause the following actions:

u When a bit in the Operation NTR register is set to 1, then a 1-to-0 transition of the corresponding

bit in the Operation Condition register causes that bit in the Operation Event register to be set.

u When a bit of the Operation PTR register is set to 1, then a 0-to-1 transition of the corresponding

bit in the Operation Condition register causes that bit in the Operation Event register to be set.

u If the same bits in both NTR and PTR registers are set to 1, then any transition of that bit at the

Operation Condition register sets the corresponding bit in the Operation Event register.

u If the same bits in both NTR and PTR registers are set to 0, then no transition of that bit at the

Operation Condition register can set the corresponding bit in the Operation Event register.

NOTE: Setting a bit in the PTR or NTR filter can of itself generate positive or negative events in

the corresponding Operation Event register.

Command Syntax

Parameters

Default Value

Examples

Query Syntax

Returned Parameters

Related Commands

STATus:OPERation:NTRansition <NRf+> STATus:OPERation:PTRansition <NRf+> 0 to 32767 | MAXimum | MINimum 0

STAT:OPER:NTR 32 STAT:OPER:PTR 1

STATus:OPERation:NTRansition? STATus:OPERation:PTRansition? <NR1> (register value) STAT:OPER:ENAB

Bit Configuration of Questionable Status Registers

Language Dictionary - 3

Bit Position

Bit Name not

Bit Weight

OV over-voltage protection has tripped OCP over-current protection has tripped SOA safe operating area protection has tripped (HP 6811B, 6812B, 6813B) UNR output is unregulated OT over-temperature protection has tripped RI remote inhibit is active CL peak peak current limit is active (HP 6811B, 6812B, 6813B) Rail rail protection tripped (HP 6811B, 6812B, 6813B);

CL rms rms current limit is active Isum summary of Isum registers (HP 6834B) MeasOvld current measurement exceeded low current range capability (HP 6811B, 6812B, 6813B)

15 14 13 12 11 10 9 8–5 4 3 2 1 0

Meas

used

rail voltage unregulated (HP 6814B, 6834B, 6843A)

Ovld

16384 8192 4096 2048 1024 512 16 8 4 2 1

Isum CL

rms

Rail CL

peak

RI not

used

OT UNR SOA OCP OV

STATus:QUEStionable?

This query returns the value of the Questionable Event register. The Event register is a read-only register which holds (latches) all events that are passed by the Questionable NTR and/or PTR filter. Reading the Questionable Event register clears it.

NOTE: On the HP 6834B, each signal that is fed into the Questionable Status Condition register

is logically-ORed from three corresponding status signals that originate from each phase.

Query Syntax

Parameters

Examples

Returned Parameters

Related Commands

STATus:QUEStionable[:EVENt]? None

STAT:QUES:EVEN?

<NR1> (register value) *CLS STAT:QUES:NTR STAT:QUES:PTR

STATus:QUEStionable:CONDition?

This query returns the value of the Questionable Condition register. That is a read-only register which holds the real-time (unlatched) questionable status of the ac source.

Query Syntax

Parameters

Examples

Returned Parameters

Related Commands

STATus:QUEStionable:CONDition? None

STAT:QUES:COND?

<NR1> (register value) STAT:OPER:COND?

3 - Language Dictionary

STATus:QUEStionable:ENABle

This command sets or reads the value of the Questionable Enable register. This register is a mask for enabling specific bits from the Questionable Event register to set the questionable summary (QUES) bit of the Status Byte register. This bit (bit 3) is the logical OR of all the Questionable Event register bits that are enabled by the Questionable Status Enable register.

Command Syntax

Parameters

Default Value

Examples

Query Syntax

Returned Parameters

Related Commands

STATus:QUEStionable:ENABle <NRf+> 0 to 32767 | MAXimum | MINimum 0

STAT:QUES:ENAB 32 STAT:QUES:ENAB 1

STATus:QUEStionable:ENABle? <NR1> (register value) STAT:QUES?

STATus:QUEStionable:NTRansition STATus:QUEStionable:PTRansition

These commands set or read the value of the Questionable NTR (Negative-Transition) and PTR (Positive-Transition) registers. These registers serve as polarity filters between the Questionable Enable and Questionable Event registers to cause the following actions:

u When a bit in the Questionable NTR register is set to 1, then a 1-to-0 transition of the

corresponding bit in the Questionable Condition register causes that bit in the Questionable Event register to be set.

u When a bit of the Questionable PTR register is set to 1, then a 0-to-1 transition of the

corresponding bit in the Questionable Condition register causes that bit in the Questionable Event register to be set.

u If the same bits in both NTR and PTR registers are set to 1, then any transition of that bit at the

Questionable Condition register sets the corresponding bit in the Questionable Event register.

u If the same bits in both NTR and PTR registers are set to 0, then no transition of that bit at the

Questionable Condition register can set the corresponding bit in the Questionable Event register.

NOTE: Setting a bit in the PTR or NTR filter can of itself generate positive or negative events in

the corresponding Questionable Event register.

Command Syntax

Parameters

Default Value

Examples

Query Syntax

Returned Parameters

Related Commands

STATus:QUEStionable:NTRansition <NRf+> STATus:QUEStionable:PTRansition <NRf+> 0 to 32767 | MAXimum | MINimum 0

STAT:QUES:NTR 32 STAT:QUES:PTR 1

STATus:QUEStionable:NTRansition? STATus:QUEStionable:PTRansition? <NR1> (register value) STAT:QUES:ENAB

Language Dictionary - 3

Bit Configuration of Questionable Instrument Summary Registers

Bit Position

Bit Name not

Bit Weight 4096 2048 512 16 8 2 1 OV over-voltage protection has tripped

OCP over-current protection has tripped UNR output is unregulated OT over-temperature protection has tripped RI remote inhibit is active Rail rail protection tripped (HP 6811B, 6812B, 6813B);

CL rms rms current limit is active

15–13 12 11 10 9 8–5 4 3 2 1 0

Rail not

usedCLrms

rail voltage unregulated (HP 6814B, 6834B, 6843A)

used

RI not

used

OT UNR not

used

OCP OV

STATus:QUEStionable:INSTrument:ISUMmary?

HP 6834B Only

Phase Selectable

This command returns the value of the Questionable Event register for a specific output of a three-phase ac source. The particular output phase must first be selected by INST:NSEL.

The Event register is a read-only register which holds (latches) all events that are passed by the Questionable NTR and/or PTR filter. Reading the Questionable Event register clears it.

Query Syntax

Parameters

Examples

Returned Parameters

Related Commands

STATus:QUEStionable:INSTrument:ISUMmary[:EVENt]? None

STAT:QUES:INST:ISUM:EVEN?

<NR1> (register value) *CLS INST:NSEL STAT:QUES:INST:ISUM:NTR STAT:QUES:INST:ISUM:PTR

3 - Language Dictionary

STATus:QUEStionable:INSTrument:ISUMmary:CONDition?

HP 6834B Only

Phase Selectable

This query returns the value of the Questionable Condition register for a specific output of a three-phase ac source. The particular output phase must first be selected by INST:NSEL.

The Condition register is a read-only register which holds the real-time (unlatched) questionable status of the ac source.

Query Syntax

Parameters

Examples

Returned Parameters

Related Commands

STATus:QUEStionable:INSTrument:ISUMmary:CONDition]? None

STAT:QUES:INST:ISUM:COND?

<NR1> (register value) STAT:QUES:COND?

STATus:QUEStionable:INSTrument:ISUMmary:ENABle

HP 6834B Only

Phase Selectable

This command sets or reads the value of the Questionable Enable register for a specific output of a three-phase ac source. The particular output phase must first be selected by INST:NSEL.

The Enable register is a mask for enabling specific bits from the Questionable Event register to set the questionable summary (QUES) bit of the Status Byte register. This bit (bit 3) is the logical OR of all the Questionable Event register bits that are enabled by the Questionable Status Enable register.

Command Syntax

Parameters

Default Value

Examples

Query Syntax

Returned Parameters

Related Commands

STATus:QUEStionable:INSTrument:ISUMmary:ENABle <NRf+> 0 to 32767 | MAXimum | MINimum 0

STAT:QUES:INST:ISUM:ENAB 32

STATus:QUEStionable:INSTrument:ISUMmary:ENABle? <NR1> (register value) STAT:QUES:INST:ISUM?

100

Agilent 6812B Programmers Guide

Specifications and Main Features

Frequently Asked Questions

User Manual

Safety Summary

Printing History

Table of Contents

General Information

About this Guide

External References

Introduction to Programming

HP-IB Capabilities of the AC Source

RS-232 Capabilities of the AC Source

Introduction to SCPI

The SCPI Command Tree

Structure of a SCPI Message

SCPI Data Formats

System Considerations

Language Dictionary

Subsystem Commands

Calibration Subsystem Commands

Display Subsystem Commands

Instrument Subsystem

Output Subsystem

Sense Subsystem

CURRent

FREQuency

FUNCtion

LIST

PHASe

PULSe

VOLTage

Status Subsystem