Agilent Technologies 66lxxA manual Outpttltsour

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Table 5-1. Trigger Subsystem Status and Event Signals

Signal

DWE

LSC

RTG

TDC

STC

STS

WTG

Type

Status Bit

Event Handle

Event Handle

Event Handle

Event Handle

Event Handle

Status Bit

Description

Dwelling. True only during the dwelling state. DWE can be monitored at the Operation Status register (see "Chapter 4 - Status Reporting").

List Sequence Complete. Occurs upon exit from the Dwelling state after the last programmed list point has been executed. If LIST: COUNt is greater than 1, LSC occurs once for each count until the list is done.

Received a trigger. Occurs upon exit from the Initiated state.

Trigger delay complete. Occurs upon exit from the Delaying state.

Step Completed. Occurs upon exit from the Dwelling state.

Step Started. Occurs upon transition into the Dwelling state.

Waiting for trigger. True only when the trigger subsystem is in either the Initiated or the Delaying state. WTG can be monitored at the Operation Status register (see "Chapter 4 - Status Reporting”).

Trigger In and Trigger Out

The mainframe has two bnc connectors labeled Trigger In and Trigger Out. Figure 5-2 shows the model for these signals, which are applied to all power modules in the mainframe (see “TrigIn/TrigOut Characteristics” in Chapter 1 of Agilent 66000A Installation Guide for electrical parameters). Trigger In and Trigger Out are electrically isolated at each power module from the mainframe chassis reference ground.

Trigger In

Trigger In is a TTL level input that can be selected as a trigger source for each module. Modules recognize a Trigger In signal on its falling edge. Trigger In is selected as a trigger source with the EXTernal parameter. For example:

TRIGger:SOURce EXT

OUTPut:TTLT:SOURce EXT

Trigger Out

The Trigger Out signal is a 20-microsecond, negative-true TTL pulse. This pulse can be driven by each power module by programming the OUTPut:TTLTrg commands. Each module can also select Trigger Out as a trigger source by programming the SCPI TRIGger:SOURce TTLT command (see "Chapter 3 - Language Dictionary" for details of these commands).

∙To select the Trigger In connector as a trigger source, use TRIG: SOUR EXT

∙To apply a trigger to the Trigger Out connector, use OUTP:TTLT ON. You must also select the source

(OUTP:TTLT:SOUR).

Figure 5-2. TTLT Trigger Model

60 Synchronizing Power Module Output Changes

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Contents Programming Guide Agilent Part No Microfiche Part No Update AprilSafety Guidelines Contents Abor Status Reporting Error Messages Synchronizing Power Module Output ChangesExternal References IntroductionAbout This Guide Documentation SummarySupported Applications VXIplug&play Power Products Instrument DriversDownloading and Installing the Driver Accessing Online HelpIntroduction To Scpi Gpib Capabilities Of The Power ModuleIntroduction To Programming Module Gpib AddressRST *IDN? *SRE Voltlev 8.0 Prot 8.8 CURR? Volt LEV Prot CurrOutpprotdel Effect of Optional Headers Traversing the Command TreeVolttrig 7.5INIT*TRG Outp OFF*RCL 2OUTP on Outputprotectionclear STATUSOPERATIONCONDITION?OUTPUTPROTECTIONCLEARSTATUSOPERATIONCONDITION? Voltagelevel 7PROTECTION 8CURRENTLEVEL 3MODE ListSuffixes and Multipliers Class Unit Unit with Multiplier SymbolNumerical Data Formats Talking Formats Listening FormatsAssign @PM3TO System ConsiderationsAgilent Basic Controllers Error HandlingUsing the National Instruments Gpib Interface Sending the Command Volt 5 in C Sending the Command Volt 5 in BasicReceiving Module Data with Basic Receiving Data from the ModuleReceiving Module Data with C Introduction Language DictionaryDescription Description Of Common CommandsCLS Meaning and TypeESR? Bit Configuration of Standard Event Status Enable RegisterESE ESEOPC? IDN?OPC PSC OPT?RST RCLRCL SRE SAVSRE TRG Bit Configuration of Status Byte RegisterSTB? Abor Description of Subsystem CommandsTST? WAICalauto Subsystem Tree Diagram Calibration SubsystemCalpass Calauto 1 Calauto OnceCalcurr CalcurrlevCalvoltlev CalsaveCalstat CalvoltCurrmode CalvoltprotCurr Curr 500 MA CurrlevCurrtrig 1200 MA Currlevtrig CurrprotstatCurrprotstat OFF CurrtrigListcurr Init Initcont 1 Initcont onListcoun Listcoun Listcoun INFListstep LISTCURRPOIN?Listdwel LISTDWELPOIN?MEASCURR? MEASVOLT? ListvoltListvolt 2.0,2.5,3.0 Listvolt MAX,2.5,MIN LISTVOLTPOIN?Outpprot Outp Outpstat ON,NORELAYNorm Outpprotcle Outpprotdel 75E-1Outprel OutprelpolOutpttltsour Link OutpttltOutpttlt 1 Outpttlt OFF OutpttltlinkStatoperenab STATOPER?STATOPEREVEN? STATOPERCOND?Statpres Stat Oper NTR 32 Stat Oper PTRStat Ques COND? STATQUES?STATQUESEVEN? STATQUESCOND?Trig SYSTERR?SYSTVERS? Trigger SubsystemTriglink Trig Trig IMMTrigdel Trigdel .25 Trigdel MAXVoltmode List Voltmode FIX VoltVoltlev VoltmodeVolttrig 1200 MV Voltlevtrig VOLTSENSSOUR?Volttrig Link Parameter List Power Module Programming ParametersOperation Status Group Power Module Status StructureStatus Register Bit Configuration Status ReportingQuestionable Status Group Bit Signal Bit Configurations of Status Registers MeaningStatus Questionable Commands Query Standard Event Status Group Power Module Status ModelLocation Of Event Handles Status Byte RegisterOutput Queue Examples Initial Conditions At Power OnStatoperptr 1024NTR Statoperenab 1024*SRE Statoperptr 5376ENABStatquesptr 18ENAB STATOPEREVEN?QUESEVEN?Model of Fixed-Mode Trigger Operation Synchronizing Power Module Output ChangesTrigger Subsystem Initiated State Delaying StateIdle State Output Change State Model of List Mode Trigger OperationINITiateCONTinuous Command Trigger Status and Event SignalsOutpttltsour List Subsystem Triggering a List Listvolt 3.0,3.25,3.5,3.75 Listdwel 10,10,25,40Automatically Repeating a List Listcurr 2,3,12,15Timing diagrams of Liststep Operation RI Remote Inhibit Subsystem DFI Discrete Fault Indicator SubsystemScpi Command Completion Standard Event Status Register Error Bits Error MessagesPower Module Hardware Error Messages System Error Messages222 -223 -241 -310 -330 -350 -400 -410 -420 -430 Scpi Version Scpi Confirmed CommandsScpi Approved Commands Scpi Conformance InformationNon-SCPI Commands Application Programs Application 1. Sequencing Multiple Modules During Power Up Variations On This Implementation Figure B1-1. Block Diagram of Application #1Figure B1-2. Timing Diagram of Application #1 Enable Response to Trigger Reset and Clear ModuleEnable Backplane TTL Trigger Drive Enable OutputImplementation Details How The MPS Implements The Solution MPS Set Up Figure B2-1. Block Diagram of Application #2 Start AT 15 When a CV-TO-CC Transition OccursEnable TTL Trigger Drive Enable Response to TTL TriggerApplication 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 Seconds Option BaseStart Voltage for Ramp Stop Voltage for RampFigure B4-1. Voltage Waveform for Application #4 Application 4. Providing Time-Varying VoltagesModule set up Variations On This Implementation Enables Detection on Positive TRANSITION, I.E Enable OCPNo Delay Before Protection Occurs Enable Detection of OC ConditionApplication 5. Providing Time-Varying Current Limiting Figure B5-1. Typical DUT Current vs. Time Implementation Details How The MPS Implements The Sequence SET to GET Current from List GO to 12 V When TriggeredCurrent Limit Data Dwell Time DataNominal 12 Application 6. Output Sequencing Paced by the ComputerMPS Set Up Figure B6-1. Block Diagram of Application #6 Number of Bias Supply Limit C0MBINATIONS These are the BiasSupply Limit Conditions To be TestedReturn Overview Of Application Advantages/Benefits Of The MPS Solution Figure B7-1. Block Diagram of Application #7 Enable Intr Identify Handler Subroutine When the Module Indicates SIC Step CompletedWhen IT Completes the LIST. OPC Generates SRO Enable SRQ InterruptSupplemental Information CMD$ = Voltmode List ‘ SET to GET Voltage from List CMD$ = Output on ‘ Enable OutputCMD$ = Initiate ‘ Enable Trigger to Start List ‘ Conversion to Send Real Numbers Over the BUSWend Call Iooutputs SLOTO, CMDS, LWaiting for Trigger BIT 5 of the Operation Status Register CONDITION.DATA =‘ INSTRUMENT.NAME$ = Sloto ‘ Disable Auto Serial PollIf IBSTA% 0 then Goto ‘ AS Part of the Command String ‘ Program N3.BASStop ‘ General Error HandlerIf IBSTA% 0 then Goto Selected AS a Trigger Source Dwell = ramptime Application #3 Controlling Voltage Ramp UP AT Turn onTo 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 IndexIndex Index Index United States Latin America Agilent Sales and Support OfficesManual Updates