132 | Agilent Technologies E3632A specs

Application Programs

This chapter contains two application programs over the remote interface to help you develop programs for your own application. Chapter 4, “Remote Interface Reference,” starting on page 71, lists the syntax for the SCPI (Standard Commands for Programmable Instruments) commands available to program the power supply.

All program examples have been tested on a PC with Windows 3.1 or Windows for Workgroups. Both examples are for use with GPIB (IEEE 488). These examples require a VISA (Virtual Instrument Software Architecture) driver with your GPIB PC card. You should have the “visa.dll” in your windows/system directory for the GPIB examples to work. All program examples perform the same task. They step through voltages and make corresponding current readings to characterize a power diode.

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Agilent Technologies E3632A manual 132

Contents

‹&RS\ULJKW$JLOHQW7HFKQRORJLHV,QF $OO5LJKWV5HVHUYHG 3DUW1XPEHU $SULO Flexible system features Convenient bench-top features Front Panel at a Glance Page T e Front-Panel Voltage and Current Limit Settings OVP Display Annunciators Key to Rear Panel at a Glance This Book Page Contents Contents Remote Interface Reference Error Messages General Information Safety and EMC Requirements Safety Considerations Accessories Options and AccessoriesGeneral Information Options and Accessories Options General Information Description Description R n i n g General Information Description R n i n g Initial Inspection InstallationCooling and Location General Information Installation Rack Mounting Page Power-Line Cord Input Power RequirementsPower-Line Voltage Selection General Information Input Power Requirements Panel Power-line module General Information Input Power Requirements Initial Operation Initial Operation Verify that the correct power-line fuse is installed Verify the power-line voltage setting on the rear panelConnect the power-line cord and turn on your power supply Preliminary Checkout Enable the outputs Initial Operation Power-On CheckoutAddr 05 or RS-232 Voltage Output Checkout Output CheckoutInitial Operation Output Checkout Adjust the voltage limit value to 1.0 volt Turn on the power supplyCurrent Output Checkout T e Initial Operation Output Checkout Front-Panel Operation Front-Panel Operation Front-Panel Operation Front-Panel Operation Overview Front-Panel Operation Overview Adjust the knob for the desired current limit Set the display to the limit modeConstant Voltage Operation Front-Panel Operation Constant Voltage Operation CURRent currentMINMAX Return to the meter modeVOLTage voltageMINMAX OUTPut on Constant Current Operation Adjust the knob for the desired voltage limitFront-Panel Operation Constant Current Operation Verify that the power supply is in the constant current mode Turn on the storage mode Set up the power supply for the desired operating stateStoring and Recalling Operating States Store the operating state in memory location RCL SAV Programming Overvoltage Protection Setting the OVP Level and Enable the OVP CircuitLevel 32.0 Move to the clear mode Ovp on Readjust the OVP trip level or the output voltage levelChecking OVP Operation Clearing the Overvoltage Condition Voltprot voltageMINMAX Clear the overvoltage condition and exit this menuVoltprotstat Offon Voltprotcle Enable the OCP circuit Setting the OCP Level and Enable the OCP CircuitProgramming Overcurrent Protection Front-Panel Operation Programming Overcurrent Protection Move to the clear mode Ocp on Readjust the OCP trip level or the output current levelChecking OCP Operation Clearing the Overcurrent Condition Currprot currentMINMAX Clear the overcurrent condition and exit this menuCurrprotstat Offon Currprotcle CV Regulation Remote Voltage SensingOutput Rating Output Noise Remote Voltage Sensing Connections Stability Front-Panel Operation Disabling the Output Disabling the OutputOutp Offon Knob Locking Disabling the Output Using an External Relay Self-Test System-Related OperationsFront-Panel Operation System-Related Operations TST? ERR Error ConditionsSYSTERR? 113, Undefined header Disp Offon Display ControlDisptextcle Disptext ‘HELLO’ Scpi Language Version Firmware Revision QueryIDN? Returns HEWLETT-PACKARD,E3632A,0,X.X-X.X-X.X SYSTVERS? Front-Panel Operation Remote Interface Configuration Remote Interface ConfigurationRemote Interface Selection Baud Rate Selection RS-232 Gpib AddressParity Selection RS-232 Gpib To Set the Gpib Address RS-232 To Set the Baud Rate and Parity RS-232Baud Choose the RS-232 interface For one second T e Front-Panel Operation Gpib Interface Configuration Gpib Interface Configuration RS-232 Configuration Overview RS-232 Interface ConfigurationFront-Panel Operation RS-232 Interface Configuration RS-232 Data Frame Format Connection to a Computer or Terminal DTR / DSR Handshake Protocol RS-232 Troubleshooting Calibration Security Calibration OverviewFront-Panel Operation Calibration Overview Calsecstat OFF, HP003632 Code Calsecstat ON, HP003632 ZZ001443 CalseccodeCalsecstat ON, ZZ00143 Calibration Message Calibration CountCalstr ‘CAL 05-1-97’ Remote Interface Reference Scpi Remote Interface Reference Scpi Command Summary Scpi Command Summary VOLTageDC? System-Related Commands Status Reporting Commands IEEE-488.2 Common Commands Using the Low-Level Commands Using the APPLy CommandSimplified Programming Overview ‘‘VOLT Selecting a Trigger Source Reading a Query Response‘‘SYSTERR?’’ ‘‘TRIGSOUR IMM’’ 3RZHU6XSSO\3URJUDPPLQJ5DQJHV Remote Interface Reference Using the APPLy Command Using the APPLy CommandAPPLy voltage DEF MIN MAX,current DEF MIN MAX APPLy? Curr UP Output Setting and Operation CommandsCurr Down CURRentSTEP? DEFault CURRentSTEP numeric valueDEFaultCURRentTRIGgered current MINimum MAXimum CURRentTRIGgered? MINimum MAXimum CURRentPROTectionSTATe 01OFFON CURRentPROTection? MINimumMAXimumCURRentPROTectionSTATe? CURRentPROTectionTRIPped? Volt Down Volt UP VOLTageTRIGgered voltage MINimum MAXimum VOLTageSTEP? DEFaultVOLTageTRIGgered? MINimum MAXimum VOLTagePROTection voltageMINimumMAXimum VOLTagePROTectionSTATe? VOLTagePROTectionSTATe 01OFFONVOLTagePROTectionTRIPped? VOLTagePROTectionCLEar MEASureVOLTage? Remote Interface Reference Triggering Commands Triggering CommandsTrigger Source Choices Bus Software Triggering Trigsour BUS*TRG*WAI*TRG*WAI Trigger 705 group execute triggerImmediate Triggering Trigsour IMM TRG Triggering Commands System-Related Commands OUTPutRELay? SYSTemERRor?SYSTemBEEPer HEWLETT-PACKARD,E3632A,0,X.X-X.X-X.X RST IDN?Curr Currstep Currtrig Currprot Currprotstat Disp Outp RCL 1 2 SAV 1 2 Calibration Commands CALibrationSECureSTATe OFF ON,code CALibrationSECureCODE new codeCALibrationSECureSTATe? CALibrationSTRing quoted string CALibrationVOLTagePROTection RS-232 Interface Commands What is an Enable Register? What is an Event Register?Scpi Status Registers Remote Interface Reference Scpi Status Registers 101 Scpi Status System Questionable Status Register Questionable Status Enable register is cleared whenQuestionable Status Event register is cleared when 102 103 Standard Event Register Status Byte Register Standard Event Enable register is cleared when104 ‡ RXHHFXWHWKH*SRE 0FRPPDQG ‡ RXHHFXWHWKH*CLSFOHDUVWDWXVFRPPDQGDiihfwlqvwuxphqwwkurxjksxw Using the Message Available Bit MAV Using *STB? to Read the Status ByteTo Interrupt Your Bus Controller Using SRQ Using *OPC to Signal When Data is in the Output Buffer To Determine When a Command Sequence is Completed107 Remote Interface Reference Status Reporting Commands Status Reporting CommandsSTATusQUEStionableCONDition? STATusQUEStionable? ESE? CLSESR? OPC SRE? PSC?STB? WAI 111 An Introduction to the Scpi Language CURRent currentMINimumMAXimumUPDOWN Command Format Used in This Manual‘‘SOURceCURRentTRIGgered’’ ‘‘APPLy 3.5,1.5’’ 112 Using the MIN and MAX Parameters Command SeparatorsSourvolt Mincurr MAX Sourvolt MIN Sourcurr MAX Scpi Command Terminators Querying Parameter SettingsIEEE-488.2 Common Commands ‘‘CURR? MAX’’ Curr currentMINMAXUPDOWN Scpi Parameter TypesTrigsour Busimm 115 ‡ 7KHSRZHUVXSSO\ªVLQSXWDQGRXWSXWEXIIHUVDUHFOHDUHG Halting an Output in Progress RQILUPHG&RPPDQGV Scpi Conformance Information SOURce VOLTageLEVelIMMediateAMPLitude voltageMINMAXUPDOWN 118 HYLFH6SHFLILF&RPPDQGV IEEE-488 Conformance Information Error Messages 113, Undefined header 122 Error Appl Execution Errors Undefined header Program mnemonic too longExample Triggdel Invalid character in number Expression errors Block data errorsInvalid character data Character data too long CALibrationSTRing command Settings conflictToo many errors Data out of range Isolator Uart overrun error Isolator Uart framing errorRS-232 framing error RS-232 overrun error Self-Test Errors Calibration Errors Cal OVP or OCP status enabled Bad DAC DNL error correction dataCal checksum failed, DAC DNL error correction data Bad OVP cal data Application Programs 132 Application Programs C++ Example for Gpibieee ++ Example for GpibieeeDiode.c 133 End of Program 134 Application Programs ++ Example for Gpibieee 135 Excel 5.0 Example for Windows 3.1 and Gpib 136 Visuccess 137 End of Program 138 Tutorial 140 Tutorial Overview of Agilent E3632A Operation Overview of Agilent E3632A Operation141 142 Tutorial Output Characteristics Output Characteristics143 144 Output Characteristics Unregulated State Unwanted Signals145 146 Tutorial Connecting the Load Connecting the LoadOutput Isolation Multiple Loads Remote Voltage Sensing Tutorial Connecting the Load R n i n g148 Capacitive Loading Load ConsiderationInductive loading Pulse Loading 150 Tutorial Connecting the Load Reverse Current Loading Series Connections Extending the Voltage and Current RangeParallel Connections Tutorial Extending the Voltage and Current Range Tutorial Remote Programming Remote Programming152 Speed of Response Programming Down 153 Tutorial Reliability Reliability154 Specifications 156 Specifications Performance Specifications Performance Specifications157 OCP 158 Specifications Supplemental Characteristics Supplemental Characteristics159 160 161 Dimensions of Agilent E3632A Power Supply Specifications Supplemental Characteristics 162 163 Index 164 165 166 Warranty According to ISO/IEC Guide 22 and EN Declaration of Conformity