Output Characteristics, 143 | Agilent Technologies E3632A guide

Chapter 7 Tutorial

Output Characteristics

Output Characteristics

An ideal constant-voltage power supply would have a zero output impedance at all frequencies. Thus, as shown in Figure 7-3, the voltage would remain perfectly constant in spite of any changes in output current demanded by the load.

Figure 7-3. Ideal Constant Voltage	Figure 7-4. Ideal Constant Current
Power Supply	Power Supply

The ideal constant-current power supply exhibits an infinite output impedance at all frequencies. Thus as Figure 7-4 indicates, the ideal constant-current power supply would accommodate a load resistance change by altering its output voltage by just the amount necessary to maintain its output current at a constant value.

The output of the E3632A power supply can operate in either constant-voltage (CV) mode or constant-current (CC) mode. Under certain fault conditions, the power supply can not operate in either CV or CC mode and becomes unregulated.

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Agilent Technologies E3632A manual Tutorial Output Characteristics, 143

Contents

3DUW1XPEHU $SULO ‹&RS\ULJKW$JLOHQW7HFKQRORJLHV,QF $OO5LJKWV5HVHUYHG Convenient bench-top features Flexible system features Front Panel at a Glance Page Front-Panel Voltage and Current Limit Settings T e Display Annunciators OVP Rear Panel at a Glance Key to This Book Page Contents Contents Remote Interface Reference Error Messages General Information Safety Considerations Safety and EMC Requirements Options and Accessories AccessoriesGeneral Information Options and Accessories Options Description General Information Description R n i n g General Information Description R n i n g Installation Initial InspectionCooling and Location General Information Installation Rack Mounting Page Input Power Requirements Power-Line CordPower-Line Voltage Selection General Information Input Power Requirements Power-line module Panel General Information Input Power Requirements Initial Operation Initial Operation Verify the power-line voltage setting on the rear panel Verify that the correct power-line fuse is installedConnect the power-line cord and turn on your power supply Preliminary Checkout Initial Operation Power-On Checkout Enable the outputsAddr 05 or RS-232 Output Checkout Voltage Output CheckoutInitial Operation Output Checkout Turn on the power supply Adjust the voltage limit value to 1.0 voltCurrent Output Checkout T e Initial Operation Output Checkout Front-Panel Operation Front-Panel Operation Front-Panel Operation Overview Front-Panel Operation Front-Panel Operation Overview Set the display to the limit mode Adjust the knob for the desired current limitConstant Voltage Operation Front-Panel Operation Constant Voltage Operation Return to the meter mode CURRent currentMINMAXVOLTage voltageMINMAX OUTPut on Adjust the knob for the desired voltage limit Constant Current OperationFront-Panel Operation Constant Current Operation Verify that the power supply is in the constant current mode Set up the power supply for the desired operating state Turn on the storage modeStoring and Recalling Operating States Store the operating state in memory location SAV RCL Setting the OVP Level and Enable the OVP Circuit Programming Overvoltage ProtectionLevel 32.0 Readjust the OVP trip level or the output voltage level Move to the clear mode Ovp onChecking OVP Operation Clearing the Overvoltage Condition Clear the overvoltage condition and exit this menu Voltprot voltageMINMAXVoltprotstat Offon Voltprotcle Setting the OCP Level and Enable the OCP Circuit Enable the OCP circuitProgramming Overcurrent Protection Front-Panel Operation Programming Overcurrent Protection Readjust the OCP trip level or the output current level Move to the clear mode Ocp onChecking OCP Operation Clearing the Overcurrent Condition Clear the overcurrent condition and exit this menu Currprot currentMINMAXCurrprotstat Offon Currprotcle Remote Voltage Sensing CV RegulationOutput Rating Output Noise Stability Remote Voltage Sensing Connections Disabling the Output Front-Panel Operation Disabling the OutputOutp Offon Disabling the Output Using an External Relay Knob Locking System-Related Operations Self-TestFront-Panel Operation System-Related Operations TST? Error Conditions ERRSYSTERR? 113, Undefined header Display Control Disp OffonDisptextcle Disptext ‘HELLO’ Firmware Revision Query Scpi Language VersionIDN? Returns HEWLETT-PACKARD,E3632A,0,X.X-X.X-X.X SYSTVERS? Remote Interface Configuration Front-Panel Operation Remote Interface ConfigurationRemote Interface Selection Gpib Address Baud Rate Selection RS-232Parity Selection RS-232 To Set the Gpib Address Gpib To Set the Baud Rate and Parity RS-232 RS-232Baud Choose the RS-232 interface For one second Gpib Interface Configuration T e Front-Panel Operation Gpib Interface Configuration RS-232 Interface Configuration RS-232 Configuration OverviewFront-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 Overview Calibration SecurityFront-Panel Operation Calibration Overview Code Calsecstat OFF, HP003632 Calsecstat ON, HP003632 Calseccode ZZ001443Calsecstat ON, ZZ00143 Calibration Count Calibration MessageCalstr ‘CAL 05-1-97’ Remote Interface Reference Scpi Scpi Command Summary Remote Interface Reference Scpi Command Summary VOLTageDC? System-Related Commands Status Reporting Commands IEEE-488.2 Common Commands Using the APPLy Command Using the Low-Level CommandsSimplified Programming Overview ‘‘VOLT Reading a Query Response Selecting a Trigger Source‘‘SYSTERR?’’ ‘‘TRIGSOUR IMM’’ 3RZHU6XSSO\3URJUDPPLQJ5DQJHV Using the APPLy Command Remote Interface Reference Using the APPLy CommandAPPLy voltage DEF MIN MAX,current DEF MIN MAX APPLy? Output Setting and Operation Commands Curr UPCurr Down CURRentSTEP numeric valueDEFault CURRentSTEP? DEFaultCURRentTRIGgered current MINimum MAXimum CURRentTRIGgered? MINimum MAXimum CURRentPROTection? MINimumMAXimum CURRentPROTectionSTATe 01OFFONCURRentPROTectionSTATe? CURRentPROTectionTRIPped? Volt UP Volt Down VOLTageSTEP? DEFault VOLTageTRIGgered voltage MINimum MAXimumVOLTageTRIGgered? MINimum MAXimum VOLTagePROTection voltageMINimumMAXimum VOLTagePROTectionSTATe 01OFFON VOLTagePROTectionSTATe?VOLTagePROTectionTRIPped? VOLTagePROTectionCLEar MEASureVOLTage? Triggering Commands Remote Interface Reference Triggering CommandsTrigger Source Choices Bus Software Triggering Trigger 705 group execute trigger Trigsour BUS*TRG*WAI*TRG*WAIImmediate Triggering Trigsour IMM Triggering Commands TRG System-Related Commands SYSTemERRor? OUTPutRELay?SYSTemBEEPer IDN? HEWLETT-PACKARD,E3632A,0,X.X-X.X-X.X RSTCurr Currstep Currtrig Currprot Currprotstat Disp Outp SAV 1 2 RCL 1 2 Calibration Commands CALibrationSECureCODE new code CALibrationSECureSTATe OFF ON,codeCALibrationSECureSTATe? CALibrationSTRing quoted string CALibrationVOLTagePROTection RS-232 Interface Commands What is an Event Register? What is an Enable Register?Scpi Status Registers Remote Interface Reference Scpi Status Registers Scpi Status System 101 Questionable Status Enable register is cleared when Questionable Status RegisterQuestionable Status Event register is cleared when 102 Standard Event Register 103 Standard Event Enable register is cleared when Status Byte Register104 ‡ RXHHFXWHWKH*CLSFOHDUVWDWXVFRPPDQG ‡ RXHHFXWHWKH*SRE 0FRPPDQGDiihfwlqvwuxphqwwkurxjksxw Using *STB? to Read the Status Byte Using the Message Available Bit MAVTo Interrupt Your Bus Controller Using SRQ To Determine When a Command Sequence is Completed Using *OPC to Signal When Data is in the Output Buffer107 Status Reporting Commands Remote Interface Reference Status Reporting CommandsSTATusQUEStionableCONDition? STATusQUEStionable? CLS ESE?ESR? OPC PSC? SRE?STB? WAI An Introduction to the Scpi Language 111 Command Format Used in This Manual CURRent currentMINimumMAXimumUPDOWN‘‘SOURceCURRentTRIGgered’’ ‘‘APPLy 3.5,1.5’’ 112 Command Separators Using the MIN and MAX ParametersSourvolt Mincurr MAX Sourvolt MIN Sourcurr MAX Querying Parameter Settings Scpi Command TerminatorsIEEE-488.2 Common Commands ‘‘CURR? MAX’’ Scpi Parameter Types Curr currentMINMAXUPDOWNTrigsour Busimm 115 Halting an Output in Progress ‡ 7KHSRZHUVXSSO\ªVLQSXWDQGRXWSXWEXIIHUVDUHFOHDUHG Scpi Conformance Information RQILUPHG&RPPDQGV 118 SOURce VOLTageLEVelIMMediateAMPLitude voltageMINMAXUPDOWN HYLFH6SHFLILF&RPPDQGV IEEE-488 Conformance Information Error Messages Error 113, Undefined header 122 Execution Errors Appl Program mnemonic too long Undefined headerExample Triggdel Invalid character in number Block data errors Expression errorsInvalid character data Character data too long Settings conflict CALibrationSTRing commandToo many errors Data out of range Isolator Uart framing error Isolator Uart overrun errorRS-232 framing error RS-232 overrun error Self-Test Errors Calibration Errors Bad DAC DNL error correction data Cal OVP or OCP status enabledCal checksum failed, DAC DNL error correction data Bad OVP cal data Application Programs 132 ++ Example for Gpibieee Application Programs C++ Example for GpibieeeDiode.c 133 Application Programs ++ Example for Gpibieee End of Program 134 Excel 5.0 Example for Windows 3.1 and Gpib 135 136 137 Visuccess End of Program 138 Tutorial 140 Overview of Agilent E3632A Operation Tutorial Overview of Agilent E3632A Operation141 142 Output Characteristics Tutorial Output Characteristics143 Output Characteristics 144 Unwanted Signals Unregulated State145 146 Connecting the Load Tutorial Connecting the LoadOutput Isolation Multiple Loads Tutorial Connecting the Load R n i n g Remote Voltage Sensing148 Load Consideration Capacitive LoadingInductive loading Pulse Loading Tutorial Connecting the Load Reverse Current Loading 150 Extending the Voltage and Current Range Series ConnectionsParallel Connections Tutorial Extending the Voltage and Current Range Remote Programming Tutorial Remote Programming152 153 Speed of Response Programming Down Reliability Tutorial Reliability154 Specifications 156 Performance Specifications Specifications Performance Specifications157 158 OCP Supplemental Characteristics Specifications Supplemental Characteristics159 160 Dimensions of Agilent E3632A Power Supply 161 Specifications Supplemental Characteristics 162 Index 163 164 165 166 Warranty Declaration of Conformity According to ISO/IEC Guide 22 and EN