Agilent Technologies 667xA, 665xA, 664xA manual Sre, Stb?, Bit Configuration of Status Byte Register

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*SRE

Meaning and Type

Service Request Enable Device Interface

Description

This command sets the condition of the Service Request Enable Register. This register determines which bits from the Status Byte Register (see *STB for its bit configuration) are allowed to set the Master Status Summary (MSS) bit and the Request for Service (RQS) summary bit. A 1 in any Service Request Enable Register bit position enables the corresponding Status Byte Register bit and all such enabled bits then are logically ORed to cause Bit 6 of the Status Byte Register to be set. See "Chapter 4 - Status Reporting" for more details concerning this process.

When the controller conducts a serial poll in response to SRQ, the RQS bit is cleared, but the MSS bit is not. When *SRE is cleared (by programming it with 0), the power supply cannot generate an SRQ to the controller.

Command Syntax

*SRE <NRf>

Parameters

0-to255

 

Default Value

(See *PSC)

Example

*SRE 20

 

Query Syntax

*SRE?

 

Returned Parameters

<NR1>

(Register binary value)

Related Commands

*ESE

*ESR *PSC

If *PSC is programmed to 0, then the *SRE command causes a write cycle to nonvolatile memory. The nonvolatile memory has a finite number of write cycles (see Supplemental Characteristics in the power supply Operating Guide). Programs that repeatedly write to nonvolatile memory can eventually exceed the maximum number of write cycles and may cause the memory to fail.

*STB?

Meaning and Type

Status Byte Device Status

Description

This query reads the Status Byte register, which contains the status summary bits and the Output Queue MAV bit. Reading the Status Byte register does not clear it. The input summary bits are cleared when the appropriate event registers are read (see "Chapter 4 - Status Reporting" for more information). The MAV bit is cleared at power on or by *CLS.

A serial poll also returns the value of the Status Byte register, except that bit 6 returns. Request for Service (RQS) instead of Master Status Summary (MSS). A serial poll clears RQS, but not MSS. When MSS is set, it indicates that the power supply has one or more reasons for requesting service.

Bit Configuration of Status Byte Register

Bit Position

7

6

 

5

 

4

3

2

 

1

0

Condition

OPER

MSS (RQS)1

 

ESB

 

MAV

QUES

2

 

2

2

Bit Weight

128

64

 

32

 

16

8

4

 

2

1

ESB = Event status byte summary; MAV = Message available; MSS = Master status summary;

 

 

OPER = Operation status summary; QUES = Questionable status summary; RQS = Request for service.

 

1Also represents RQS. 2These bits are always zero.

 

 

 

 

 

 

 

 

 

 

Query Syntax

*STB?

 

 

 

 

 

 

 

Returned Parameters

<NR1>

(Register binary value)

 

 

 

Related Commands

(None)

 

 

 

 

 

 

32 Language Dictionary

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Contents Programming Guide Gpib DC Power Supplies Agilent Part No Microfiche Part No JulySafety Guidelines Printing HistoryContents Description of Subsystem Commands System CommandsCurrent Subsystem Display SubsystemCommand Summary Programming Parameters Power Supply Status Structure Operation Status GroupVoltage Subsystem Questionable Status GroupPage General 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 Voltlev 4.5PROT 4.8CURR?NLVoltlev 4.5 Prot 4.8 CURR? Parts of a Scpi MessageVolt LEV Prot Curr Traversing the Command Tree Query IndicatorMessage Unit Separator Root SpecifierEffect of Optional Headers Moving Among SubsystemsOutputprotectionclear STATUSOPERATIONCONDITION? OUTPUTPROTECTIONCLEARSTATUSOPERATIONCONDITION?Including Common Commands Scpi QueriesValue Coupling Scpi Data FormatsExamples Controlling the Output Programming Status Saving and Recalling StatesWriting to the Display System Considerations Programming the Digital I/O PortGpib Address DigdataAction Display Shows Assigning the Gpib Address In ProgramsError Handling DOS DriversAgilent Basic Controllers Sample Program CodeProgramming Some Power Supply Functions Iout = OUTPUTS2Call Ioenter PS,OEVENT SPOL%=O While C O Language Dictionary IntroductionDescription Of Common Commands Common Commands Syntax DiagramCLS ESEOPC ESR?IDN? OPC? OPT?PSC PSC 0 *PSCCommand Syntax RCL NRf Parameters Example Query Syntax None Related CommandsRCL PSC *RST *SAVSAV RSTSAV Bit Configuration of Status Byte Register SRESTB? SREWAI TRGTST? Description of Subsystem Commands Calibration CommandsAbor AborCurrprotstat Current SubsystemCurr Currtrig Display Subsystem DigdataDisp Digdata 7 DigitaldatavalueDisptext Defaultmode DispmodeDisptext Dispmode Norm Displaymode Normal Displaywindowmode TextInitiate Subsystem Measure SubsystemInit Initcont MEASCURR? MEASVOLT?Outpprotcle Outpprotdel Output SubsystemOutp Outprel OutprelpolOutprel 1 Outprel OFF Outprelpol NormStatus Subsystem StatpresStatus Operation Registers STATOPER?STATUSOPERATIONENABLE? StatoperenabStatoper NTR Statoper PTR Statoperenab 1312 StatoperenabStatus Questionable Registers STATQUES?STATQUESCOND? StatquesenabSystem Commands SYSTERR? SYSTEMERROR?Statques NTR Statques PTR SYSTERR?Trigger Subsystem SystlangSYSTVERS? TrigVoltage Subsystem TrigsourVolt Volttrig Trigsour BUS Triggersource BUSCommand Summary Command SummaryCommand Parameters Subsystem Commands VoltprotCommand Parameters Common Commands ParametersProgramming Parameters Currlevtrig MAXVoltlevtrig MAX Voltprot MAXPage Power Supply Status Structure Register CommandsStatus Reporting Operation Status GroupCAL WTGUNR OPCStatus Questionable Commands Register Query Cleared By Questionable Status GroupStandard Event Status Group STATQUESNTR?Service Request Enable Register Initial Conditions At Power OnStatus Byte Register Output QueuePON Power-On Bit Servicing an Operation Status Mode EventDefault Power On Register States Condition Caused By StatpreServicing Questionable Status Events Monitoring Both Phases of a Status TransitionAdding More Operation Events Scpi Command Completion DFI Discrete Fault IndicatorRI Remote Inhibit WAIPage Error Messages Power Supply Hardware Error MessagesCalibration Error Messages System Error MessagesSummary of System Error Messages Error Error String Description/Explanation/Examples NumberScpi Confirmed Commands1 Scpi Approved CommandsScpi Conformance Information Scpi VersionNON-SCPI Commands1 Compatibility Language Compatibility LanguageParallel Polling Volt CurrVSET? ISET? CURR? VOUT?Hold OFF VolttrigHold CurrtrigFAULT? UNMASK?SRQ OFF SRQIndex IndexOperation status group, 51 optional header Trig SOUR, 46 VOLT, 46 Volt PROT, 47 Volt Trig United States Latin America Canada Australia/New ZealandEurope Asia Pacific Japan
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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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