Application Programs | Agilent Technologies 66lxxA specs

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Application Programs

This section contains seven example applications. For each application, there is:

∙An overview of the application.

∙Which MPS features are used to implement the application.

∙The advantages and benefits of the MPS solution.

∙The details of the implementation of the solution.

∙A block diagram of the setup.

∙A sample program listing in Agilent BASIC.

∙A description of variations on the application.

The following table lists what MPS features are used in each of the applications. It can be used as an index into this section.

Application 1. Sequencing Multiple Modules During Power Up

Application 2. Sequencing Multiple Modules to Power Down on Event

Application 3. Controlling Output Voltage Ramp Up at Turn On

Application 4. Providing Time-Varying Voltages

Application 5. Providing Time-Varying Current Limiting

Application 6. Output Sequencing Paced by the Computer

Application 7. Output Sequencing Without Computer Intervention

Lists

20-point current List

20-point voltage List

Repetitive Lists

Dwell time

List Pacing

Dwell-paced Lists

Trigger-paced Lists

Actions Due To A Change In Status

Generate an SRQ

Generate a trigger

Disable the output

Stop the List

Triggers

Change the voltage on trigger

Trigger in/out from MPS backplane TTL Trigger

Trigger on a GPIB trigger command

Trigger delay

Other Features

Active downprogramming

Overcurrent protection

Application

1 2 3

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Application Programs 69

Image 68

Agilent Technologies 66lxxA manual Application Programs

Contents

Agilent Part No Microfiche Part No Update April Programming Guide Safety Guidelines Contents Abor Status Reporting Synchronizing Power Module Output Changes Error Messages Introduction About This GuideDocumentation Summary External References VXIplug&play Power Products Instrument Drivers Downloading and Installing the DriverAccessing Online Help Supported Applications Gpib Capabilities Of The Power Module Introduction To ProgrammingModule Gpib Address Introduction To Scpi RST *IDN? *SRE Volt LEV Prot Curr Voltlev 8.0 Prot 8.8 CURR? Outpprotdel Traversing the Command Tree Effect of Optional Headers Outputprotectionclear STATUSOPERATIONCONDITION? OUTPUTPROTECTIONCLEARSTATUSOPERATIONCONDITION?Voltagelevel 7PROTECTION 8CURRENTLEVEL 3MODE List Volttrig 7.5INIT*TRG Outp OFF*RCL 2OUTP on Symbol Numerical Data Formats Talking FormatsListening Formats Suffixes and Multipliers Class Unit Unit with Multiplier System Considerations Assign @PM3TO Error Handling Agilent Basic Controllers Using the National Instruments Gpib Interface Sending the Command Volt 5 in Basic Sending the Command Volt 5 in C Receiving Data from the Module Receiving Module Data with Basic Receiving Module Data with C Language Dictionary Introduction Description Of Common Commands CLSMeaning and Type Description Bit Configuration of Standard Event Status Enable Register ESEESE ESR? OPC? IDN?OPC OPT? PSC RST RCLRCL SRE SAVSRE TRG Bit Configuration of Status Byte RegisterSTB? Description of Subsystem Commands TST?WAI Abor Subsystem Tree Diagram Calibration Subsystem Calauto Calauto 1 Calauto Once CalcurrCalcurrlev Calpass Calsave CalstatCalvolt Calvoltlev Calvoltprot CurrCurr 500 MA Currlev Currmode Currprotstat Currprotstat OFFCurrtrig Currtrig 1200 MA Currlevtrig Init Initcont 1 Initcont on ListcounListcoun Listcoun INF Listcurr LISTCURRPOIN? ListdwelLISTDWELPOIN? Liststep Listvolt Listvolt 2.0,2.5,3.0 Listvolt MAX,2.5,MINLISTVOLTPOIN? MEASCURR? MEASVOLT? Outp Outpstat ON,NORELAY Outpprot Outpprotcle Outpprotdel 75E-1 OutprelOutprelpol Norm Outpttlt Outpttlt 1 Outpttlt OFFOutpttltlink Outpttltsour Link STATOPER? STATOPEREVEN?STATOPERCOND? Statoperenab Stat Oper NTR 32 Stat Oper PTR Statpres STATQUES? STATQUESEVEN?STATQUESCOND? Stat Ques COND? SYSTERR? SYSTVERS?Trigger Subsystem Trig Trig Trig IMM TrigdelTrigdel .25 Trigdel MAX Triglink Volt VoltlevVoltmode Voltmode List Voltmode FIX Volttrig 1200 MV Voltlevtrig VOLTSENSSOUR?Volttrig Power Module Programming Parameters Link Parameter List Power Module Status Structure Status Register Bit ConfigurationStatus Reporting Operation Status Group Questionable Status Group Bit Signal Bit Configurations of Status Registers MeaningStatus Questionable Commands Query Power Module Status Model Standard Event Status Group Location Of Event Handles Status Byte RegisterOutput Queue Initial Conditions At Power On Examples Statoperptr 5376ENAB Statquesptr 18ENABSTATOPEREVEN?QUESEVEN? Statoperptr 1024NTR Statoperenab 1024*SRE Model of Fixed-Mode Trigger Operation Synchronizing Power Module Output ChangesTrigger Subsystem Initiated State Delaying StateIdle State Model of List Mode Trigger Operation INITiateCONTinuous CommandTrigger Status and Event Signals Output Change State Outpttltsour List Subsystem Listvolt 3.0,3.25,3.5,3.75 Listdwel 10,10,25,40 Automatically Repeating a ListListcurr 2,3,12,15 Triggering a List Timing diagrams of Liststep Operation RI Remote Inhibit Subsystem DFI Discrete Fault Indicator SubsystemScpi Command Completion Error Messages Power Module Hardware Error MessagesSystem Error Messages Standard Event Status Register Error Bits 222 -223 -241 -310 -330 -350 -400 -410 -420 -430 Scpi Confirmed Commands Scpi Approved CommandsScpi Conformance Information Scpi Version Non-SCPI Commands Application Programs Application 1. Sequencing Multiple Modules During Power Up Figure B1-1. Block Diagram of Application #1 Variations On This Implementation Figure B1-2. Timing Diagram of Application #1 Reset and Clear Module Enable Backplane TTL Trigger DriveEnable Output Enable Response to Trigger Implementation Details How The MPS Implements The Solution MPS Set Up Figure B2-1. Block Diagram of Application #2 When a CV-TO-CC Transition Occurs Enable TTL Trigger DriveEnable Response to TTL Trigger Start AT 15 Application 3. Controlling Output Voltage Ramp Up at Turn On Figure B3-1. Simulating a Slow Voltage Ramp Generating the Desired Voltage Ramp for Application #3 Option Base Start Voltage for RampStop Voltage for Ramp Seconds Application 4. Providing Time-Varying Voltages Figure B4-1. Voltage Waveform for Application #4 Module set up Variations On This Implementation Enable OCP No Delay Before Protection OccursEnable Detection of OC Condition Enables Detection on Positive TRANSITION, I.E Application 5. Providing Time-Varying Current Limiting Figure B5-1. Typical DUT Current vs. Time Implementation Details How The MPS Implements The Sequence GO to 12 V When Triggered Current Limit DataDwell Time Data SET to GET Current from List Application 6. Output Sequencing Paced by the Computer Nominal 12 MPS Set Up Figure B6-1. Block Diagram of Application #6 These are the Bias Supply Limit ConditionsTo be Tested Number of Bias Supply Limit C0MBINATIONS Return Overview Of Application Advantages/Benefits Of The MPS Solution Figure B7-1. Block Diagram of Application #7 When the Module Indicates SIC Step Completed When IT Completes the LIST. OPC Generates SROEnable SRQ Interrupt Enable Intr Identify Handler Subroutine Supplemental Information CMD$ = Output on ‘ Enable Output CMD$ = Initiate ‘ Enable Trigger to Start List‘ Conversion to Send Real Numbers Over the BUS CMD$ = Voltmode List ‘ SET to GET Voltage from List Call Iooutputs SLOTO, CMDS, L Waiting for Trigger BIT 5 of the Operation Status RegisterCONDITION.DATA = Wend ‘ Disable Auto Serial Poll If IBSTA% 0 then Goto ‘ AS Part of the Command String‘ Program N3.BAS ‘ INSTRUMENT.NAME$ = Sloto Stop ‘ General Error HandlerIf IBSTA% 0 then Goto Selected AS a Trigger Source Application #3 Controlling Voltage Ramp UP AT Turn on Dwell = ramptime To terminate the iooutputa Int error Char *badstring If error != EOl enabled for both read and write Strcatvlist, vpoint This is a generalized error checking routine Index Index Index Index Index Agilent Sales and Support Offices United States Latin America Manual Updates