Constant Current Operation | Agilent Technologies E3632A guide

Chapter 3 Front-Panel Operation

Constant Current Operation

Power

Display Limit

Constant Current Operation

To set up the power supply for constant current (CC) operation, proceed as follows.

•Front-panel operation:

1 Connect a load to the output terminals.

With power-off, connect a load to the (+) and (-) output terminals.

2Turn on the power supply.

The power supply will go into the power-on / reset state; the output is disabled (the OFF annunciator turns on); the 15V/7A range is selected (the 15V annunciator turns on); and the knob is selected for voltage control.

To operate the power supply in the 30V/4A range, press 30V,4A key before proceeding to the next step. The 30V annunciator turns on.

3Set the display to the limit mode.

Notice that the Limit annunciator blinks, indicating that the display is in the limit mode. When the display is in the limit mode, you can see the voltage and current limit values of the selected supply.

In constant current mode, the current values between the meter mode and limit mode are the same, but the voltage values are not. Moreover, if the display is in the meter mode, you cannot see the change of voltage limit value when adjusting the knob. We recommend that you should set the display to “limit” mode to see the change of voltage limit value in the constant current mode whenever adjusting the knob.

4Adjust the knob for the desired voltage limit. 1

Check that the Limit annunciator still blinks and the second digit of voltmeter blinks to indicate the knob is selected for voltage control. The blinking digit can be changed using the resolution keys and the blinking digit can be adjusted by turning the knob. Adjust the knob for the desired voltage limit.

1You can use the resolution selection keys to move the blinking digit to the right or left when setting the voltage.

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Agilent Technologies E3632A manual Front-Panel Operation Constant Current Operation

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 Options Options and AccessoriesAccessories General Information Options and Accessories General Information Description 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 General Information Input Power Requirements Input Power RequirementsPower-Line Cord Power-Line Voltage Selection Panel Power-line module General Information Input Power Requirements Initial Operation Initial Operation Preliminary Checkout Verify the power-line voltage setting on the rear panelVerify that the correct power-line fuse is installed Connect the power-line cord and turn on your power supply 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 Front-Panel Operation Overview Front-Panel Operation Overview Front-Panel Operation Constant Voltage Operation Set the display to the limit modeAdjust the knob for the desired current limit Constant Voltage Operation OUTPut on Return to the meter modeCURRent currentMINMAX VOLTage voltageMINMAX 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 Store the operating state in memory location Set up the power supply for the desired operating stateTurn on the storage mode Storing and Recalling Operating States RCL SAV Setting the OVP Level and Enable the OVP Circuit Programming Overvoltage ProtectionLevel 32.0 Clearing the Overvoltage Condition Readjust the OVP trip level or the output voltage levelMove to the clear mode Ovp on Checking OVP Operation Voltprotcle Clear the overvoltage condition and exit this menuVoltprot voltageMINMAX Voltprotstat Offon Front-Panel Operation Programming Overcurrent Protection Setting the OCP Level and Enable the OCP CircuitEnable the OCP circuit Programming Overcurrent Protection Clearing the Overcurrent Condition Readjust the OCP trip level or the output current levelMove to the clear mode Ocp on Checking OCP Operation Currprotcle Clear the overcurrent condition and exit this menuCurrprot currentMINMAX Currprotstat Offon Output Noise Remote Voltage SensingCV Regulation Output Rating Remote Voltage Sensing Connections Stability Disabling the Output Front-Panel Operation Disabling the OutputOutp Offon Knob Locking Disabling the Output Using an External Relay TST? System-Related OperationsSelf-Test Front-Panel Operation System-Related Operations 113, Undefined header Error ConditionsERR SYSTERR? Disptext ‘HELLO’ Display ControlDisp Offon Disptextcle SYSTVERS? Firmware Revision QueryScpi Language Version IDN? Returns HEWLETT-PACKARD,E3632A,0,X.X-X.X-X.X Remote Interface Configuration Front-Panel Operation Remote Interface ConfigurationRemote Interface Selection Gpib Address Baud Rate Selection RS-232Parity Selection RS-232 Gpib To Set the Gpib Address Choose the RS-232 interface To Set the Baud Rate and Parity RS-232RS-232 Baud For one second T e Front-Panel Operation Gpib Interface Configuration Gpib Interface Configuration RS-232 Data Frame Format RS-232 Interface ConfigurationRS-232 Configuration Overview Front-Panel Operation RS-232 Interface Configuration Connection to a Computer or Terminal DTR / DSR Handshake Protocol RS-232 Troubleshooting Calibration Overview Calibration SecurityFront-Panel Operation Calibration Overview Calsecstat OFF, HP003632 Code Calsecstat ON, HP003632 ON, ZZ00143 CalseccodeZZ001443 Calsecstat Calibration Count Calibration MessageCalstr ‘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 ‘‘VOLT Using the APPLy CommandUsing the Low-Level Commands Simplified Programming Overview ‘‘TRIGSOUR IMM’’ Reading a Query ResponseSelecting a Trigger Source ‘‘SYSTERR?’’ 3RZHU6XSSO\3URJUDPPLQJ5DQJHV APPLy? Using the APPLy CommandRemote Interface Reference Using the APPLy Command APPLy voltage DEF MIN MAX,current DEF MIN MAX Output Setting and Operation Commands Curr UPCurr Down CURRentTRIGgered? MINimum MAXimum CURRentSTEP numeric valueDEFaultCURRentSTEP? DEFault CURRentTRIGgered current MINimum MAXimum CURRentPROTectionTRIPped? CURRentPROTection? MINimumMAXimumCURRentPROTectionSTATe 01OFFON CURRentPROTectionSTATe? Volt Down Volt UP VOLTagePROTection voltageMINimumMAXimum VOLTageSTEP? DEFaultVOLTageTRIGgered voltage MINimum MAXimum VOLTageTRIGgered? MINimum MAXimum VOLTagePROTectionCLEar VOLTagePROTectionSTATe 01OFFONVOLTagePROTectionSTATe? VOLTagePROTectionTRIPped? MEASureVOLTage? Bus Software Triggering Triggering CommandsRemote Interface Reference Triggering Commands Trigger Source Choices Trigsour IMM Trigger 705 group execute triggerTrigsour BUS*TRG*WAI*TRG*WAI Immediate Triggering TRG Triggering Commands System-Related Commands SYSTemERRor? OUTPutRELay?SYSTemBEEPer Currtrig Currprot Currprotstat Disp Outp IDN?HEWLETT-PACKARD,E3632A,0,X.X-X.X-X.X RST Curr Currstep RCL 1 2 SAV 1 2 Calibration Commands CALibrationSTRing quoted string CALibrationSECureCODE new codeCALibrationSECureSTATe OFF ON,code CALibrationSECureSTATe? CALibrationVOLTagePROTection RS-232 Interface Commands Remote Interface Reference Scpi Status Registers What is an Event Register?What is an Enable Register? Scpi Status Registers 101 Scpi Status System 102 Questionable Status Enable register is cleared whenQuestionable Status Register Questionable Status Event register is cleared when 103 Standard Event Register 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 STATusQUEStionable? Status Reporting CommandsRemote Interface Reference Status Reporting Commands STATusQUEStionableCONDition? OPC CLSESE? ESR? WAI PSC?SRE? STB? 111 An Introduction to the Scpi Language Command Format Used in This Manual CURRent currentMINimumMAXimumUPDOWN‘‘SOURceCURRentTRIGgered’’ ‘‘APPLy 3.5,1.5’’ 112 Sourvolt MIN Sourcurr MAX Command SeparatorsUsing the MIN and MAX Parameters Sourvolt Mincurr MAX ‘‘CURR? MAX’’ Querying Parameter SettingsScpi Command Terminators IEEE-488.2 Common Commands 115 Scpi Parameter TypesCurr currentMINMAXUPDOWN Trigsour Busimm ‡ 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 Invalid character in number Program mnemonic too longUndefined header Example Triggdel Character data too long Block data errorsExpression errors Invalid character data Data out of range Settings conflictCALibrationSTRing command Too many errors RS-232 overrun error Isolator Uart framing errorIsolator Uart overrun error RS-232 framing error Self-Test Errors Calibration Errors Bad OVP cal data Bad DAC DNL error correction dataCal OVP or OCP status enabled Cal checksum failed, DAC DNL error correction data Application Programs 132 133 ++ Example for GpibieeeApplication Programs C++ Example for Gpibieee Diode.c 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 Overview of Agilent E3632A Operation Tutorial Overview of Agilent E3632A Operation141 142 Output Characteristics Tutorial Output Characteristics143 144 Output Characteristics Unwanted Signals Unregulated State145 146 Multiple Loads Connecting the LoadTutorial Connecting the Load Output Isolation Tutorial Connecting the Load R n i n g Remote Voltage Sensing148 Pulse Loading Load ConsiderationCapacitive Loading Inductive loading 150 Tutorial Connecting the Load Reverse Current Loading Tutorial Extending the Voltage and Current Range Extending the Voltage and Current RangeSeries Connections Parallel Connections Remote Programming Tutorial Remote Programming152 Speed of Response Programming Down 153 Reliability Tutorial Reliability154 Specifications 156 Performance Specifications Specifications Performance Specifications157 OCP 158 Supplemental Characteristics Specifications 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