Agilent Technologies 669xA, 665xA The PON Power-OnBit, Servicing an Operation Status Mode Event

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Table 4-4. Default Power On Register States

Table 4-4. Default Power On Register States

Register

Condition

Caused By

Operation PTR; Questionable PTR

All bits = 1

STAT:PRE

Operation NTR; Questionable NTR

All bits = 0

STAT:PRE

Operation Event; Questionable Event

All bits = 0

*CLS

Operation Enable; Questionable Enable

All bits = 0

STAT:PRE

Standard Event Status Enable

All bits = 01

*ESE 0

Status Byte

All bits = 0

*CLS

Status Request Enable

All bits = 01

*SRE 0

Output Queue

Cleared

*CLS

1If PSC=1. If PSC = 0, then the last previous state before turn on is recalled. The value of PSC is stored in nonvolatile memory.

The PON (Power-On) Bit

The PON bit in the Standard Event register is set whenever the power supply is turned on. The most common use for PON is to generate an SRQ at power on following an unexpected loss of power. To do this, bit 7 of the Standard Event Enable register must be set so that a power-on event registers in the ESB (Standard Event Summary Bit). Also, bit 5 of the Service Request Enable register must be set to permit an SRQ to be generated. The commands to accomplish these two conditions are:

*ESE 128 *SRE 32

If *PSC is programmed to 0, the contents of the Standard Event Enable and Service RequestEnable registers are saved in nonvolatile memory and recalled at power on. This allows a PON event to generate SRQ at power on. Programming *PSC to 1 prevents these registers from being saved and they are cleared at power on. This prevents a PON event from generating SRQ at power on.

Examples

Note

These examples are generic SCPI commands. See "Chapter 2 - Remote Programming" for

 

information about encoding the commands as language strings.

 

 

Servicing an Operation Status Mode Event

This example assumes you want a service request generated whenever the power supply switches to the CC (constant current) mode. From Figure 4-1, note that the required path is for a condition at bit 10 (CC) of the Operation Status register to set bit 6 (RQS) of the Status Byte register. The required register programming is shown in Table 4-5.

Status Reporting 55

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Contents Agilent Part No PROGRAMMING GUIDE GPIB DC POWER SUPPLIESMicrofiche Part No JulyPrinting History Safety GuidelinesGENERAL INFORMATION ContentsREMOTE PROGRAMMING LANGUAGE DICTIONARYDescription of Subsystem Commands STATUS REPORTING ERROR MESSAGESSCPI CONFORMANCE INFORMATION COMPATIBILITY LANGUAGEAbout this Guide General InformationDocumentation Summary User’s GuideVXIplug&play Power Product Instrument Drivers Prerequisites for Using this GuideDownloading and Installing the Driver Accessing Online HelpRemote Programming GPIB Capabilities Of The Power SupplyIntroduction To SCPI ConventionsSCPI Messages Types of SCPI CommandsStructure of a SCPI Message Common CommandsFigure 2-1.Command Message Structure Parts of a SCPI MessageMessage Component VOLT LEV PROT CURRQuery Indicator Traversing the Command TreeMessage Unit Separator Root SpecifierActive Header Path Figure 2-2.Partial Command TreeThe Effect of Optional Headers Moving Among SubsystemsSCPI Queries Including Common CommandsValue Coupling SCPI Data FormatsListening Formats ExamplesTable 2-2.Suffixes and Multipliers ClassDisable the output Controlling 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 Agilent BASIC Controllers DOS DriversSample Program Code Error HandlingController Using Agilent 82335A Interface Programming Some Power Supply Functions22 Remote Programming Programming Some Power Supply Functions continued1130 24 Remote Programming Common Commands Related CommandsSubsystem Commands Language DictionaryFigure 3-1.Common Commands Syntax Diagram Description Of Common Commands0 to Meaning and TypeDescription IDN? ESR?Related Commands Query SyntaxOPT? OPC?Power-onStatus Clear Device Initialization PSC 0 *PSCDescription Meaning and TypeDescription Bit Configuration of Status Byte Register STB?TST? Calibration Commands Description of Subsystem CommandsABOR Figure 3-2.Subsystem Commands Tree DiagramCURR CURR TRIG Current SubsystemCURR PROT STAT CURRENT:LEVEL 200 MADIG DATA Display SubsystemDISP Digital I/O Port Programming ChartDISP TEXT DISP MODEDISP TEXT DEFAULT MODE enclosed in either single ‘ or double quotesMeasure Subsystem Initiate SubsystemINIT INIT:CONT MEAS CURR? MEAS VOLT?OUTP Output SubsystemOUTP PROT CLE OUTP PROT DEL 0 orOUTP REL POL OUTP RELOUTP REL 1 OUTP REL OFF OUTP REL POL NORMSTAT PRES Status SubsystemStatus Operation Registers STAT OPER?STATUS OPERATION ENABLE? STAT OPER ENABSTAT OPER NTR STAT OPER PTR STAT QUES? Status Questionable RegistersSTAT:QUES:COND? STAT QUES ENABSTAT QUES NTR STAT QUES PTR System CommandsSYST ERR? corresponding Questionable Event registerSYST LANG Trigger SubsystemSYST VERS? TRIGTRIG SOUR Voltage SubsystemVOLT VOLT TRIG VOLTAGE LEVEL 200 MVVOLT:PROT Command SummaryCommand Summary CommandCommand Parameters Programming Parameters Characteristics in the Operating GuideParameter Agilent Model and ValueRegister Commands Power Supply Status StructureStatus Reporting Operation Status GroupSignal Table 4-2.Bit Configurations of Status RegistersFigure 4-1.Power Supply Status Model MeaningStandard Event Status Group Questionable Status GroupTable 4-3.Status Questionable Commands CLS *ESR?Initial Conditions At Power On Service Request Enable RegisterDetermining the Cause of a Service Interrupt Status Byte RegisterServicing an Operation Status Mode Event The PON Power-OnBitTable 4-4.Default Power On Register States Caused ByAdding More Operation Events Monitoring Both Phases of a Status TransitionServicing Questionable Status Events Table 4-5.Generating RQS from the CC EventDFI Discrete Fault Indicator SCPI Command CompletionRI Remote Inhibit Techniques in ANSI/IEEE StdPower Supply Hardware Error Messages Error MessagesCalibration Error Messages System Error Messages60 Error Messages SCPI Approved Commands SCPI Confirmed Commands1SCPI Conformance Information SCPI VersionNON-SCPICommands1 Compatibility Language Similar SCPI Table B-1.ARPS CommandsARPS Command1 Table B-1.ARPS Commands continued ARPS Command1 Index 68 Index Page United States Agilent Sales and Support OfficeLatin 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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