159 | Agilent Technologies E3633A, E3634A manual

Chapter 7 Tutorial

Remote Programming

If no load resistor is attached to the power supply output terminal, then the output voltage will rise linearly at a rate of CO/IL when programmed upward, and TR = CO(E2 -E1)/IL, the shortest possible up-programming time.

Figure 7-9. Speed of Response - Programming Down

Figure 7-9 shows that when the power supply is programmed down, the regulator senses that the output voltage is higher than desired and turns off the series transistors entirely. Since the control circuit can in no way cause the series regulator transistors to conduct backwards, the output capacitor can only be discharged through the load resistor and internal current source (IS).

The output voltage decays linearly with slope of IS/CO with no load and stops falling when it reaches the new output voltage which has been demanded. If full load is connected, the output voltage will fall exponentially faster.

Since up-programming speed is aided by the conduction of the series regulating transistor, while down programming normally has no active element aiding in the discharge of the output capacitor, laboratory power supplies normally program upward more rapidly than downward.

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Agilent Technologies E3633A, E3634A manual 159, Speed of Response Programming Down

Contents

3DUW1XPEHU $SULO ‹&RS\ULJKW$JLOHQW7HFKQRORJLHV,QF $OO5LJKWV5HVHUYHG Convenient bench-top features Flexible system features Front Panel at a Glance For Agilent E3633A Model **For Agilent E3634A Model Front-Panel Voltage and Current Limit Settings Display Annunciators Rear Panel at a Glance This Book Page Contents Contents Remote Interface Reference Application Programs Error MessagesTutorial Specifications General Information Safety Considerations Safety and EMC Requirements Accessories Options and AccessoriesOptions Description General Information 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 Input Power Requirements Power-Line CordPower-Line Voltage Selection General Information Input Power Requirements General Information Input Power Requirements General Information Input Power Requirements Initial Operation Initial Operation Preliminary Checkout Power-On Checkout Initial Operation Power-On CheckoutEnable the outputs Addr 05 or RS-232 Turn on the power supply Output CheckoutVoltage Output Checkout Initial Operation Output Checkout Adjust the voltage limit value to 1.0 volt Enable the outputCurrent Output Checkout Chapter 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 Adjust the knob for the desired output voltage Return to the meter modeCURRent currentMINMAX VOLTage voltageMINMAX Constant Current Operation Front-Panel Operation Constant Current Operation Adjust the knob for the desired output current 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 Turn on the recall mode Restore the operating stateSave the operating state Recall the stored operating state Setting the OVP Level and Enable the OVP Circuit Enable the OVP circuitProgramming Overvoltage Protection Front-Panel Operation Programming Overvoltage Protection Move to the clear mode Checking OVP OperationClearing the Overvoltage Condition Lower the output voltage level Move to the OVP Clear mode Raise the OVP trip levelVoltprot voltageMINMAX Voltprotstat Offon Recommended Protection Circuit for Battery Charging Setting the OCP Level and Enable the OCP Circuit Enable the OCP circuitProgramming Overcurrent Protection Front-Panel Operation Programming Overcurrent Protection Clearing the Overcurrent Condition Checking OCP OperationLower the output current level Move to the OCP Clear mode Raise the OCP trip levelCurrprot currentMINMAX Currprotstat Offon Output Rating CV RegulationOutput Noise Stability Remote Voltage Sensing Connections Remote Voltage Sensing at the Rear Panel Rear local sensing connections Front-Panel Operation Disabling the Output 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 102, ‘‘Syntax error’’ Display Control Disp OffonDisptext quoted string Disptextcle Scpi Language Version Firmware Revision QuerySYSTVERS? Front-Panel Operation Remote Interface Configuration Remote Interface ConfigurationRemote Interface Selection Baud Rate Selection RS-232 Gpib AddressParity Selection RS-232 Turn on the remote configuration mode Move to the Gpib address setting modeSave the change and turn off the I/O configuration mode To Set the Gpib Address To Set the Baud Rate and Parity RS-232 RS-232 message will be displayedChoose the RS-232 interface Save the change and choose the parity Change Saved 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 Parity and Data Bits None / 8 data bits factory setting Connection to a Computer or Terminal DTR / DSR Handshake Protocol RS-232 Troubleshooting Calibration Security Calibration OverviewFront-Panel Operation Calibration Overview Secured Unsecured Calseccode new code ‘‘CALSECSTAT OFF, HP003633* or HP003634** ’’‘‘CALSECCODE ZZ001443 ’’ ‘‘CALSECSTAT ON, ZZ001443 ’’ Calibration Count Calibration MessageCALCOUN? Calstr quoted string Remote Interface Reference Scpi Remote Interface Reference Scpi Command Summary Scpi Command SummaryScpi First-time Scpi users, see Numeric value DEFault System-Related Commands Status Reporting Commands IEEE-488.2 Common Commands Using the APPLy Command Using the Low-Level CommandsSimplified Programming Overview ‘‘VOLT Selecting a Trigger Source Reading a Query Response‘‘TRIGSOUR IMM ’’ Power Supply Programming Ranges Agilent E3633A Programming Ranges Using the APPLy Command Remote Interface Reference Using the APPLy CommandAPPLy voltage DEF MIN MAX,current DEF MIN MAX APPLy? ‘‘CURR UP’’ Output Setting and Operation Commands‘‘CURR DOWN’’ CURRentSTEP numeric valueDEFault CURRentSTEP? DEFaultCURRentTRIGgered current MINimum MAXimum CURRentTRIGgered? MINimum MAXimum CURRentPROTection? MINimumMAXimum CURRentPROTectionSTATe 01OFFONCURRentPROTectionSTATe? CURRentPROTectionTRIPped? ‘‘VOLTSTEP 0.01 ’’ ‘‘VOLT UP ’’‘‘VOLTSTEP 0.02 ’’ ‘‘VOLT Down ’’ VOLTageSTEP? DEFault VOLTageTRIGgered voltage MINimum MAXimumVOLTageTRIGgered? MINimum MAXimum VOLTagePROTection voltageMINimumMAXimum VOLTagePROTectionSTATe 01OFFON VOLTagePROTectionSTATe?VOLTagePROTectionTRIPped? VOLTagePROTectionCLEar MEASureCURRent? MEASureVOLTage? Triggering Commands Remote Interface Reference Triggering CommandsTrigger Source Choices Bus Software Triggering Immediate Triggering Trigsour BUS*TRG*WAI*TRG*WAITrigsour IMM Triggering Commands TRG System-Related Commands Outprel command SYSTemBEEPer SYSTemERRor?+0, ‘‘No error’’ OUTPutRELay? IDN? RSTCurr Currstep SAV 1 2 CURR, CURRSTEP, CURRTRIG, CURRPROT, CurrprotstatDISP, OUTP, OUTPREL, TRIGDEL, TRIGSOUR, Volt VOLTSTEP, VOLTTRIG, VOLTPROT, VOLTPROTSTAT, Calibration Commands CALibrationSECureCODE new code CALibrationSECureSTATe OFF ON,codeCALibrationSECureSTATe? CALibrationSTRing quoted string CALibrationVOLTagePROTection 100 RS-232 Interface Commands Remote Interface Reference RS-232 Interface CommandsSYSTemREMote Ctrl-C What is an Event Register? What is an Enable Register?Scpi Status Registers Remote Interface Reference Scpi Status Registers Scpi Status System 103 Questionable Status Enable register is cleared when Questionable Status RegisterQuestionable Status Event register is cleared when 104 Standard Event Register 105 Status Byte Register Standard Event Enable register is cleared when106 Using Service Request SRQ and Serial Poll Status Byte Enable register Request Service is cleared whenCausing the service request U t i o n Using *STB? to Read the Status Byte Using the Message Available Bit MAVTo Interrupt Your Bus Controller Using SRQ Clear Using *OPC to Signal When Data is in the Output Buffer To Determine When a Command Sequence is Completed109 Status Reporting Commands Remote Interface Reference Status Reporting CommandsSTATusQUEStionableCONDition? STATusQUEStionable? CLS ESE?ESR? OPC PSC? SRE?STB? WAI An Introduction to the Scpi Language 113 CURRent currentMINimumMAXimumUPDOWN Command Format Used in This Manual‘‘SOURceCURRentTRIGgered’’ ‘‘APPLy 3.5,1.5’’ 114 Command Separators Using the MIN and MAX Parameters‘‘SOURVOLT Mincurr MAX’’ ‘‘SOURVOLT MIN’’ ‘‘SOURCURR MAX’’ Querying Parameter Settings Scpi Command TerminatorsIEEE-488.2 Common Commands ‘‘CURR? MAX’’ Scpi Parameter Types Curr currentMINMAXUPDOWNTrigsour Busimm 117 Halting an Output in Progress ClearIoclear 118 Scpi Confirmed Commands Scpi Conformance InformationRemote Interface Reference Scpi Conformance Information 119 120 SOURce VOLTageLEVelIMMediateAMPLitude voltageMINMAXUPDOWN Non-SCPI Commands 121 IEEE-488 Conformance Information Error Messages *RST reset command command does not clear the error queue 102, ‘‘Syntax error’’ 124 Execution Errors 113 Undefined header Example Triggdel121 Invalid character in number Example *ESE #B01010102 Error Messages Execution Errors 141 Invalid character data 160 to Block data errors170 to Expression errors 144 Character data too long Error Messages Execution Errors 221 Settings conflict CALibrationSTRing commandReported. See also ‘‘Self-Test Errors’’, starting on 350 Too many errors Error Messages Execution Errors 430 Query Deadlocked 440 Query Unterminated after indefinite responseExample *IDN?SYSTVERS? SYSTemLOCal , SYSTem REMote , and SYSTemRWLock Self-Test Errors Error Messages Self-Test Errors Calibration Errors Error Messages Calibration Errors 714 Bad OVP cal data 716 Bad DAC DNL error correction data717 Cal OVP or OCP status enabled 718 Gain out of range for Gain Error Correction Application Programs 134 Example Program for C and C++ Application Programs Example Program for C and C++Diode.c On next 135 On next 136 On next 137 End of Program 138 Example Program for Excel Application Programs Example Program for ExcelExample Program result 140 Application Programs Example Program for Excel Diode Macro On next 141 End of Program 142 Declaration for Windows 95/NT 143 Application Programs Example Program for Excel 144 Tutorial 146 Overview of Agilent E3633A and Agilent E3634A Operation 147 RS-232 Gpib148 Tutorial Output Characteristics Output Characteristics149 Output Characteristics 150 Unregulated State Unwanted Signals151 152 Connecting the Load R n i n g Tutorial Connecting the LoadOutput Isolation Multiple Loads Remote Voltage Sensing Tutorial Connecting the Load154 Load Consideration Capacitive LoadingInductive loading Pulse Loading Tutorial Connecting the Load Reverse Current Loading 156 Extending the Voltage and Current Range Series ConnectionsParallel Connections Tutorial Extending the Voltage and Current Range Tutorial Remote Programming Remote Programming158 159 Speed of Response Programming Down Tutorial Reliability Reliability160 Specifications 162 Specifications Performance Specifications Performance Specifications163 OCP 164 Supplemental Characteristics Maximum Input Power Operating TemperatureProgramming Language State Storage Memory Dimensions WeightEnvironmental Conditions 167 Specifications Supplemental Characteristics 168 Index 169 170 Gpib 171 Scpi 172 Warranty Declaration of Conformity According to ISO/IEC Guide 22 and EN