Agilent Technologies 669xA Remote Programming, GPIB Capabilities Of The Power Supply, Conventions

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Remote Programming

2

Remote Programming

GPIB Capabilities Of The Power Supply

All power supply functions except for setting the GPIB address are programmable over the IEEE 488 bus (also known as the General Purpose Interface Bus or "GPIB"). The IEEE 488.1 capabilities of the power supply are listed in the Supplemental Characteristics of the Operating Guide. The power supply operates from a GPIB address that is set from the front panel (see System Considerations at the end of this chapter).

Introduction To SCPI

lmportant Learn the basics of power supply operation (see "Chapter 5 - Front Panel Operation" in the power supply Operating Guide) before using SCPI.

SCPI (Standard Commands for Programmable Instruments) is a programming language for controlling instrument functions over the GPIB (IEEE 488) instrument bus. SCPI is intended to function with standard GPIB hardware and conforms to the IEEE Standard Digital Interface for Programmable Instrumentation. 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 power supply display state and the display state of a SCPI-compatible multimeter.

Note

HPSL and TMSL (Test and Measurement System Language) were earlier versions of SCPI. If you have

 

programmed in either, then you probably can go directly to "Chapter 3 - Language Dictionary".

Conventions

The following conventions are used throughout this chapter:

Angle brackets

< >

Items within angle brackets are parameter abbreviations. For example,

 

 

 

<NR1> indicates a specific form of numerical data.

Vertical bar

 

Vertical bars separate one of two or more alternative parameters. For

 

 

 

example, 0OFF indicates that you may enter either "0" or "OFF" for the

 

 

 

required parameter.

Square

[

]

Items within square brackets are optional. The representation

Brackets

 

 

[SOURce]:CURRent 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

 

 

 

"A" is a required parameter, while "B" may be omitted or may be entered

 

 

 

one or more times.

Boldface font

 

 

Boldface font is used to emphasize syntax in command definitions.

 

 

 

TRIGger:DELay <NRf> shows a command syntax.

Computer font

 

 

Computer font is used to show program text within normal text.

 

 

 

TRIGger:DELay .5 represents program text.

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Contents PROGRAMMING GUIDE GPIB DC POWER SUPPLIES Agilent Part NoMicrofiche Part No JulySafety Guidelines Printing HistoryContents GENERAL INFORMATIONREMOTE PROGRAMMING LANGUAGE DICTIONARYDescription of Subsystem Commands ERROR MESSAGES STATUS REPORTINGSCPI CONFORMANCE INFORMATION COMPATIBILITY LANGUAGEGeneral Information About this GuideDocumentation Summary User’s GuidePrerequisites for Using this Guide VXIplug&play Power Product Instrument DriversDownloading and Installing the Driver Accessing Online HelpGPIB Capabilities Of The Power Supply Remote ProgrammingIntroduction To SCPI ConventionsTypes of SCPI Commands SCPI MessagesStructure of a SCPI Message Common CommandsParts of a SCPI Message Figure 2-1.Command Message StructureMessage Component VOLT LEV PROT CURRTraversing the Command Tree Query IndicatorMessage Unit Separator Root SpecifierFigure 2-2.Partial Command Tree Active Header PathThe Effect of Optional Headers Moving Among SubsystemsIncluding Common Commands SCPI QueriesValue Coupling SCPI Data FormatsExamples Listening FormatsTable 2-2.Suffixes and Multipliers ClassControlling the Output Disable the outputEnable the output Programming Voltage and CurrentProgramming Status Saving and Recalling StatesWriting to the Display The GPIB Address System ConsiderationsProgramming the Digital I/O Port A direct primary address and a secondary address DOS Drivers Agilent BASIC ControllersSample Program Code Error HandlingProgramming Some Power Supply Functions Controller Using Agilent 82335A InterfaceProgramming Some Power Supply Functions continued 22 Remote ProgrammingProgramming Some Power Supply Functions continued 24 Remote Programming Related Commands Common CommandsSubsystem Commands Language DictionaryDescription Of Common Commands Figure 3-1.Common Commands Syntax Diagram0 to Meaning and TypeDescription ESR? IDN?Related Commands Query SyntaxOPC? OPT?Power-onStatus Clear Device Initialization PSC 0 *PSCMeaning and Type DescriptionMeaning and Type STB? Bit Configuration of Status Byte RegisterTST? Description of Subsystem Commands Calibration CommandsABOR Figure 3-2.Subsystem Commands Tree DiagramCurrent Subsystem CURR CURR TRIGCURR PROT STAT CURRENT:LEVEL 200 MADisplay Subsystem DIG DATADISP Digital I/O Port Programming ChartDISP MODE DISP TEXTDISP TEXT DEFAULT MODE enclosed in either single ‘ or double quotesInitiate Subsystem Measure SubsystemINIT INIT:CONT MEAS CURR? MEAS VOLT?Output Subsystem OUTPOUTP PROT CLE OUTP PROT DEL 0 orOUTP REL OUTP REL POLOUTP REL 1 OUTP REL OFF OUTP REL POL NORMStatus Subsystem STAT PRESStatus Operation Registers STAT OPER?STATUS OPERATION ENABLE? STAT OPER ENABSTAT OPER NTR STAT OPER PTR Status Questionable Registers STAT QUES?STAT:QUES:COND? STAT QUES ENABSystem Commands STAT QUES NTR STAT QUES PTRSYST ERR? corresponding Questionable Event registerTrigger Subsystem SYST LANGSYST VERS? TRIGVoltage Subsystem TRIG SOURVOLT VOLT TRIG VOLTAGE LEVEL 200 MVCommand Summary VOLT:PROTCommand Summary CommandCommand Parameters Characteristics in the Operating Guide Programming ParametersParameter Agilent Model and ValuePower Supply Status Structure Register CommandsStatus Reporting Operation Status GroupTable 4-2.Bit Configurations of Status Registers SignalFigure 4-1.Power Supply Status Model MeaningQuestionable Status Group Standard Event Status GroupTable 4-3.Status Questionable Commands CLS *ESR?Service Request Enable Register Initial Conditions At Power OnDetermining the Cause of a Service Interrupt Status Byte RegisterThe PON Power-OnBit Servicing an Operation Status Mode EventTable 4-4.Default Power On Register States Caused ByMonitoring Both Phases of a Status Transition Adding More Operation EventsServicing Questionable Status Events Table 4-5.Generating RQS from the CC EventSCPI Command Completion DFI Discrete Fault IndicatorRI Remote Inhibit Techniques in ANSI/IEEE StdError Messages Power Supply Hardware Error MessagesCalibration Error Messages System Error Messages60 Error Messages SCPI Confirmed Commands1 SCPI Approved CommandsSCPI Conformance Information SCPI VersionNON-SCPICommands1 Compatibility Language Similar SCPI Table B-1.ARPS CommandsARPS Command1 Table B-1.ARPS Commands continued Table B-1.ARPS Commands continued Index 68 Index Page Agilent Sales and Support Office United StatesLatin America Canada
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668xA, 669xA, 667xA, 664xA, 665xA specifications

Agilent Technologies has long been a pioneer in the production of high-performance electronic test and measurement instruments, particularly in the field of power sources. Among its notable offerings are the Agilent 667xA, 669xA, 665xA, 664xA, and 668xA series of power supplies. These instruments are designed to provide stable, reliable power for a variety of applications, including electronic testing, industrial processes, and research laboratories.

The Agilent 667xA series is characterized by its programmability and advanced measurement functions. These power supplies support a wide range of output voltages and currents, allowing for flexible configurations that cater to different testing needs. The built-in measurement capabilities enable users to monitor the voltage, current, and power with high precision, which is essential for ensuring optimal performance in electronic applications.

The Agilent 669xA series stands out with its high-power outputs, making it suitable for demanding applications. These power supplies deliver high voltage and current levels, making them ideal for testing high-performance devices, such as power amplifiers and motor drives. Additionally, the 669xA series includes features such as overvoltage protection and complex output sequencing to enhance the safety and reliability of the testing process.

The Agilent 665xA and 664xA series focus on delivering high accuracy and excellent regulation. These models are particularly known for their low noise operation, which is critical for sensitive applications where precision is paramount. The integrated programming capabilities allow users to automate testing sequences, thus improving efficiency in research and development settings.

The 668xA series features advanced digital signal processing that enhances the precision and stability of the output. Users benefit from features like remote sensing and monitoring, allowing feedback adjustments that maintain output accuracy despite cable losses. Furthermore, the 668xA models can integrate seamlessly with various test environments thanks to their LAN, GPIB, and USB connectivity options.

Overall, the Agilent 667xA, 669xA, 665xA, 664xA, and 668xA power supplies provide a comprehensive range of solutions for diverse electronic testing needs. With their advanced features, superb measurement capabilities, and robust performance, these instruments empower engineers and researchers to conduct their work with confidence, precision, and efficiency.
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