HP 6621A, 6623A, 6624A manual Equivalent Internal OV Trigger Circuit

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Figure 4-8. External Trigger Circuit

The internal equivalent OV circuit is shown in Figure 4-9. Note the internal DC blocking capacitor, bleed resistor and noise bypass capacitors.

Do not exceed 50 volts maximum between the + OV and the - OV terminals. The OV terminals are rated at ±240 Vdc (including external OV voltage) from chassis ground or any other output terminals.

Figure 4-9. Equivalent Internal OV Trigger Circuit

Output Connections and Operating Information 53

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Contents HP Part No Operating ManualCertification Safety Summary Symbol Description Safety SummaryEMC Declaration of ConformityAppendix A--Calibration Procedure Installation ProceduresAppendix C--Command Summary Appendix D--Error MessagesTable Of Contents Local Operation Remote OperationError Messages Command SummaryCalibration Programming With The Series 200/300 ComputerPage General Information Safety ConsiderationsIntroduction Instrument and Manual IdentificationOutput Combinations Available Model AccessoriesDescription HP-IB Board Basic OperationOutput Low Range Values High Range Values Output Boards Definitions SpecificationsQualifying Conditions Output Response Characteristics Source Effect SpecificationsOutputs Low High Voltage Temperature Coefficient Supplemental CharacteristicsReadback Resolution Outputs Low High Voltage Programming ResolutionAC Input Power and Current Command Processing Time see FigureDimensions all models Safety Agency ComplianceOutput Impedance Low Voltage High Voltage 80 W Low VoltageGeneral Information General Information General Information General Information Location and Cooling InstallationInitial Inspection Line Fuse Input Power Requirements100/120 2110-0342 220/240 2110-0055 Line FusesLine Voltage Conversion Power CordHP-IB Interface Connector Page Turning On Your Supply Front Panel Controls and IndicatorsGetting Started HP-IB Status Annunciators LCL keyAnnunciators Power Supply StatusAlphanumeric LCD System Control KeysOutput Control Keys Normal Self Test Indications Line SwitchNumeric Entry Keys Sample Self-Test Failure Display Checking Out Your Supply Using Local ControlCurrent Test Voltage TestOvervoltage Test Iset Enter Introduction To Remote OperationOCP Enter/Output StatementsOutput Sending a Remote CommandReading the HP-IB Address AddrDisp a Often Used CommandsGetting Data From The Supply Disp a Returning the Supply to Local Mode Output Ranges Output Connections and Operating InformationRange Selection Protection FeaturesOperating Quadrants Typical Output Range Characteristics Connecting the Load Page Cross Section Meters Area in mm2 Wire Bundled 10 a 20 aFeet Positive and Negative Voltages Remote Voltage SensingMultiple Loads Remote Sense Connections Remote Voltage SensingOutput Noise Considerations Output Type FormulaProgramming Response Time with an Output Capacitor Open Sense LeadsExternal Trigger Circuit Overvoltage Trigger ConnectionsEquivalent Internal OV Trigger Circuit Parallel Operation Power Supply Protection ConsiderationsBattery Charging CV Operation Maximum Allowable Voltage SettingRemote Sensing CC Operation13. Series Connections with Local Sensing CV Operation Series Operation14. Series Connections with Remote Sensing Specifications for Series OperationPage Page Interface Function Remote OperationHP-IB Operation HP-IB Address Selection Numeric Data Power-On Service Request PONProgramming Syntax Sheet 1 of 2. Syntax Forms for Power Supply Commands Sheet 2 of 2. Syntax Forms for Power Supply Commands Vset Fault ?Iset OvsetPage Initial Conditions Power Supply CommandsCurrent Programming Voltage ProgrammingRange Switching OVSET? Output On/OffOvervoltage OV Protection Multiple Output Storage & Recall Overcurrent Protection OCPStatus Reporting Clear CommandASTS? UNR +CCUNMASK? FAULT?Unmask 2,XXX Bit Assignment of the Serial Poll RegisterService Request Generation PON ? SRQ?Display On/Off Reprogramming DelayRQS Bit Other Queries Response Code Front PanelExplanation Code Explanation TEST? ResponsesPage Local Operation Local ModeLocal Control Of Output Functions GeneralSetting Current Setting VoltageResetting Overvoltage Protection Setting Overvoltage ProtectionResetting Overcurrent Protection Displaying the Contents of the Fault RegisterSetting the Supplys HP-IB Address Setting the Reprogramming DelayLocal Control Of System Functions ConditionAddr Enter Displaying Error MessagesSTO Enter RCL EnterPage Test Equipment and Setup Required Calibration ProceduresFigure A-1. Calibration Setup General Calibration Procedure Are not stored. Exercise care when moving the leads 10 ! Calibration Example Calibration ProgramClear Voltmeter Output Buffer PauseFnend Input ANY More Outputs to CALIBRATE? Y or N,X$Disp END of Calibration Program Page Page Voltage and Current Programming Programming With a Series 200/300 ComputerPath Names Voltage and Current Readback Voltage and Current Programming With VariablesPrint OUTPUT1 is in CV Mode END if Programming Power Supply RegistersService Request and Serial Poll Present StatusOFF Intr Enable IntrPrint Overvoltage on Output #1 Print Overvoltage on Output #2Error Detection Stored Operating States Programming Outputs Connected In ParallelInput Enter Operating VOLTAGE,V1 Input Enter Voltage LIMIT,VInput Enter the Desired Current Limit POINT,I Programming Outputs Connected In SeriesCommand Description Command SummaryTable C-1. Command Summary Table C-l. Command Summary ROM? PON?Previously Power-On Self Test Messages Error Responses Error Codes and MessagesTable D-l. Power-On Self Test Error Message Test ResponsesError Code Message Explanation ERR? query ERR key Table D-2. Error ResponsesResponse Code Explanation TEST? query Table D-3. TEST? ResponsesPage Make Changes Manual BackdatingII. CE92 Product Specific Annotations Generally Applicable Annotations6621A 6623AEurope Or contactFar East Latin America