Agilent Technologies 6622A, 6621A, 6627A, 6623A, 6624A manual

Page 87

Start with output channel 1 and use the following commands to calibrate your power supply:

NOTE

Do not turn the power supply off during the calibration procedures. Otherwise, the correction constants

 

are not stored. Exercise care when moving the leads.

 

 

1.CMODE < param > - This command turns the calibration mode either on or off. The parameter must be either a 1 or a 0. CMODE1 is used in the beginning of the calibration procedure to turn calibration mode on. CMODE must be on to use any of the calibration statements. CMODE0 is used at the end of the procedure to store the correction constants and turn calibration mode off. The CMODE? query can also be used at any time to determine if the supply is in calibration mode. A 1 indicates calibration mode is on; a 0 indicates calibration mode is off. Continue to the next command.

2.VHl<channel> - This command causes the voltage of the specified output channel to go to the high calibration point (full scale). After the command is sent, use the voltmeter to read the actual voltage <Vhi > put out by the power supply. Continue to the next command.

3.VLO < channel > - This command causes the voltage of the specified output channel to go to the low calibration point (voltage offset). After the command is sent, use the voltmeter to read the actual voltage < Vlo > put out by the power supply. Continue to the next command.

4.VDATA < channel >, < Vlo >, < Vhi > - This command is used to send the actual values measured by the voltmeter in the previous steps to the power supply. Refer to Table A-2 for the range of valid voltage readings that can be sent to the supply. <Vlo> is the voltage in volts that was measured after the VLO command was sent. < Vhi > is the voltage in volts that was measured after the VHI command was sent. The power supply uses these values to calculate the voltage and voltage readback correction constants of the specified output. Continue to the next command.

5.OVCAL < channel > - This command automatically calibrates the programmable overvoltage. This can only be done after the voltage has been calibrated. It may take up to 10 seconds for this command to execute. During this time, the front panel display indicates "CALIBRATING" .

When the front panel display of the power supply no longer indicates ’’CALIBRATING", the overvoltage portion of the calibration procedure is complete. The voltages on the output are returned to zero volts after the overvoltage calibration. To continue with the current portion of the calibration procedure, connect a four terminal 0.1Ω current shunt resistor (0.05%, 10 A) between the +V and -V output terminals. Connect the voltmeter to the resistor’s sense terminals. Refer to the current calibration setup in Figure A-1.

Continue calibrating output 1 with the following commands:

6.IHI < channel > - This command causes the current of the specified output channel to go to the high calibration point (full scale). After the command is sent, use the voltmeter to read the voltage drop across the current shunt resistor. Divide this reading by the shunt value to derive the actual current in amps < Ihi > put out by the supply. Continue to the next command.

7.ILO <channel> - This command causes the current of the specified output channel to go to the low calibration point (current offset). After the command is sent, use the voltmeter to read the voltage drop across the current shunt resistor. Divide this reading by the shunt value to derive the actual current in amps <Ilo> put out by the supply. Continue to the next command.

8.IDATA < channel >, < IIO >, < Ihi > - This command is used to send the actual current values derived in steps 6 and 7 to the power supply. Refer to Table A-2 for the range of valid current readings that can be sent to the supply. < Ilo > is the current in amps that was put out by the supply after the ILO command was sent. < Ihi > is the current in amps that was put out by the supply after the IHI command was sent. The power supply uses these values to calculate the current and current readback correction constants of the specified output.

92 Calibration Procedures

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Contents Agilent Part No Operating ManualCertification Safety Summary Environmental Conditions Safety SummaryEMC Declaration of ConformityWhat this Manual Contains Table Of Contents Local Operation Remote OperationProgramming With a Series 200/300 Computer Command SummaryError Messages CalibrationInstrument and Manual Identification Safety ConsiderationsGeneral Information IntroductionOutput Combinations Available AccessoriesDescription ModelGP-IB Board Basic OperationOutput Boards Specifications Qualifying ConditionsDefinitions Output Response Characteristics Source Effect SpecificationsOutputs Low High Voltage Temperature Coefficient Supplemental CharacteristicsOVP Readback ResolutionLow Voltage General Information General Information General Information General Information Installation Initial InspectionLocation and Cooling Line Fuse Input Power RequirementsLine Fuses GP-IBLine Voltage Conversion Power CordGP-IB Interface Connector Front Panel Controls and Indicators Getting StartedTurning On Your Supply 15V 35A Output Controls and Indicators Number Controls/lndicators Normal Self Test Indications Test Pattern of all Display Segments at Power-onSample Self-Test Failure Display Checking Out Your Supply Using Local ControlVoltage Test Overvoltage TestCurrent Test RST Introduction To Remote OperationIset Enter OCPAddr Sending a Remote CommandOutput Reading the GP-IB AddressOften Used Commands Getting Data From The SupplyDisp a Disp a Returning the Supply to Local Mode Output Ranges Output Connections and Operating InformationProtection Features Operating QuadrantsRange Selection Typical Output Range Characteristics Connecting the Load Page AWG Wire Size Wire Bundled 10 a 20 aMultiple Loads Remote Voltage SensingRemote Sense Connections Remote Voltage SensingOpen Sense Leads Output Type FormulaOutput Noise Considerations Programming Response Time with an Output CapacitorExternal Trigger Circuit Overvoltage Trigger ConnectionsEquivalent Internal OV Trigger Circuit Power Supply Protection Considerations Battery ChargingParallel Operation 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 Remote Operation GP-IB OperationInterface Function GP-IB Address Selection Power-On Service Request PON Programming SyntaxNumeric Data Sheet 1 of 2. Syntax Forms for Power Supply Commands Sheet 2 of 2. Syntax Forms for Power Supply Commands Data Range Power Supply Commands Header Output ChannelInitial Conditions Power Supply CommandsCurrent Programming Voltage ProgrammingVSET? VOUT?IOUT? Avg Current-Avg RangeAvg ResolutionOutput On/Off Range SwitchingOvervoltage OV Protection OVSET?Overcurrent Protection OCP Clear Command Multiple Output Storage & RecallStatus Reporting UNR +CC Functional Relationship of Status RegistersASTS? UNMASK?Unmask 2,XXX PON RQS ERR RDY FAU FAULT?Service Request Generation Bit Assignment of the Serial Poll RegisterSRQ? RQS Bit Reprogramming DelayOther Queries Display On/OffCMODE? TEST?Front Panel Response GP-IB Code Error Messages ExplanationCode Explanation Front PanelResponse Code TEST? ResponsesGeneral Local ModeLocal Operation Local Control Of Output FunctionsSetting Current Setting VoltageDisplaying the Contents of the Fault Register Setting Overvoltage ProtectionResetting Overvoltage Protection Resetting Overcurrent ProtectionCondition Setting the Reprogramming DelaySetting the Supply’s GP-IB Address Local Control Of System FunctionsRCL Enter Displaying Error MessagesAddr Enter STO EnterTest Equipment and Setup Required Calibration ProceduresFigure A-1. Calibration Setup General Calibration Procedure Table A-1. Calibrat ion Commands Header Channel Data SyntaxSee Figure Page Pause Calibration Program10 ! Calibration Example Clear Voltmeter Output BufferInput ANY More Outputs to CALIBRATE? Y or N,X$ Disp END of Calibration ProgramFnend Page Programming With a Series 200/300 Computer Path NamesVoltage and Current Programming Voltage and Current Readback Voltage and Current Programming With VariablesPresent Status Programming Power Supply RegistersPrint OUTPUT1 is in CV Mode END if Service Request and Serial PollPrint Overvoltage on Output #2 Enable IntrOFF Intr Print ’’OVERVOLTAGE on Output #1Error 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 Summary Table C-1. Command SummaryCommand Description Table C-l. Command Summary ROM? PON?SRQ? Test Responses Error Codes and MessagesPower-On Self Test Messages Error Responses Table D-l. Power-On Self Test Error MessageError Code Message Explanation ERR? query ERR key Table D-2. Error ResponsesResponse Code Explanation TEST? query Table D-3. TEST? ResponsesMake Changes Manual Backdating6623A Generally Applicable AnnotationsII. CE’92 Product Specific Annotations 6621AUnited States Latin America Agilent Sales and Support OfficeManual Updates

6627A, 6621A, 6624A, 6623A, 6622A specifications

Agilent Technologies is renowned for its high-quality electronic test and measurement equipment, and the Agilent 6600 series is no exception. This series includes models like the Agilent 6621A, 6622A, 6623A, 6624A, and 6627A, each designed to meet the needs of various application requirements, making them an essential part of modern laboratories.

The Agilent 6621A is a single-output DC power supply that provides a stable output voltage and current, making it ideal for testing and powering electronic devices. It features a low noise specification, which is crucial for sensitive applications. With a maximum output voltage of 30V and a current of 3A, it offers flexibility for a range of projects, from powering prototypes to performing benchmark tests.

The Agilent 6622A, a dual-output model, enhances versatility by allowing users to power two devices concurrently. It delivers output voltages of up to 20V and a total output current of 5A, which is perfect for powering circuit boards with multiple components. The built-in voltage and current limiting functions protect the equipment under test, preventing any potential damage.

On the other hand, the Agilent 6623A provides additional capabilities with its three outputs, making it particularly suitable for complex testing procedures. With a maximum voltage of 20V and output current reaching 6A across all channels, it ensures that multiple loads can be powered simultaneously without compromising performance.

The Agilent 6624A further pushes these capabilities with its higher output power. This model boasts two outputs with a combined maximum output of up to 6A, supporting devices that require more demanding power levels. Its advanced control features allow for precise voltage and current adjustments, enhancing reliability during experiments.

Lastly, the Agilent 6627A stands out as a highly scalable power supply, capable of delivering up to 40V and 7.5A across its multiple outputs. This model is particularly beneficial for applications requiring higher voltages, enabling engineers and technicians to work with a broader array of components and systems.

All models in the Agilent 6600 series incorporate built-in protection features to guarantee safety during testing. They are equipped with memory functions, allowing users to save and recall settings quickly. Additionally, the intuitive interface and various connectivity options make these power supplies user-friendly, ensuring efficient workflow in any laboratory setting. In summary, the Agilent 6600 series offers a compelling combination of versatility, precision, and advanced features, catering to diverse electronic testing applications.
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