Agilent Technologies 6622A, 6621A Input Enter Voltage LIMIT’’,V, Input Enter Operating VOLTAGE,V1

Page 97

CC Operation

Programming for CC operation is straightforward. Program each output to the desired voltage limit point. Then program each output to supply half of the total desired operating current. Both outputs will operate in CC mode. Note that the total desired current cannot exceed the combined current capability of both outputs. Figures 4-11 and 4-12 are examples of parallel configurations. These configurations apply to both CV and CC operating modes. Note the sense lead connections.

10 ASSIGN @Ps TO 705

20 INPUT "ENTER VOLTAGE LIMIT’’,V

30 INPUT "ENTER OPERATING CURRENT",Oc

40 C = Oc/2

50 OUTPUT @Ps;"CLR;VSET1,’’;V;";ISET1,";C;";VSET2,";V;";ISET2,";C

60 END

LINE 10: Assigns the I/O pathname to the power supply.

LINE 20,30: Enter the voltage limit and operating current.

LINE 40: Divides the total current requirement by 2.

LINE 50: Clears the supply and sets each output to supply half of the desired operating current at any voltage up to the desired voltage limit.

CV Operation

For CV operation, one output must operate in CC mode and the other output must operate in CV mode. The output that is operating in CV mode will be controlling the voltage regulation of both outputs.

In the example that follows, outputs 1 and 2 (both 40 W or 80 W Low V channels) will be operating in parallel with output 1 in CV mode and output 2 in CC mode at output voltages above 2.5 V. Each is programmed to one half of the desired current limit point. Above 2.5 V, the voltage for output 2 is always programmed higher than that of output 1 to ensure that output 2 operates in the CC mode. Note that any current from output 2 that is not required by the load flows into the downprogrammer of output 1 and is reflected in the current readback of output 1. The total current supplied to the load can be read back by adding the results of reading back the currents of outputs 1 and 2. At 2.5 V and below, the outputs are set to the same voltage and the operating modes depend upon the load.

10 ASSIGN @Ps to 705

20 INPUT "ENTER OPERATING VOLTAGE",V1

30 INPUT "ENTER TOTAL CURRENT LIMIT",Ilim

40 C = Ilim/2

50IF V1 > 7 THEN V2 = 20.2

60IF V1< =7 THEN V2=7.07

70IF Vl < = 2.5 THEN V2 = V1

80OUTPUT @Ps;"CLR;ISET1,";C;";VSET1,";V1

90OUTPUT @Ps;’’ISET2,";C;"VSET2,";V2

100WAIT 1

110OUTPUT @Ps;"VOUT?1"

120ENTER @Ps;Vout

130OUTPUT @Ps;"IOUT?1’’

140ENTER @Ps;Ioutl

150OUTPUT @Ps;"IOUT?2"

160ENTER @Ps;Iout2

170PRINT "OUTPUT VOLTAGE IS ";Vout

180PRINT "TOTAL OUTPUT CURRENT IS ";Ioutl + Iout2

190END

Programming with a Series 200/300 Computer 103

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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 OperationError Messages Command SummaryCalibration Programming With a Series 200/300 ComputerGeneral Information Safety ConsiderationsIntroduction Instrument and Manual IdentificationDescription AccessoriesModel Output Combinations AvailableGP-IB Board Basic OperationOutput Boards Qualifying Conditions SpecificationsDefinitions Output Response Characteristics Source Effect SpecificationsOutputs Low High Voltage Temperature Coefficient Supplemental CharacteristicsOVP Readback ResolutionLow Voltage General Information General Information General Information General Information Initial Inspection InstallationLocation and Cooling Line Fuse Input Power RequirementsLine Fuses GP-IBLine Voltage Conversion Power CordGP-IB Interface Connector Getting Started Front Panel Controls and IndicatorsTurning 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 ControlOvervoltage Test Voltage TestCurrent Test Iset Enter Introduction To Remote OperationOCP RSTOutput Sending a Remote CommandReading the GP-IB Address AddrGetting Data From The Supply Often Used CommandsDisp a Disp a Returning the Supply to Local Mode Output Ranges Output Connections and Operating InformationOperating Quadrants Protection FeaturesRange 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 SensingOutput Noise Considerations Output Type FormulaProgramming Response Time with an Output Capacitor Open Sense LeadsExternal Trigger Circuit Overvoltage Trigger ConnectionsEquivalent Internal OV Trigger Circuit Battery Charging Power Supply Protection ConsiderationsParallel 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 GP-IB Operation Remote OperationInterface Function GP-IB Address Selection Programming Syntax Power-On Service Request PONNumeric 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 CommandsVSET? Voltage ProgrammingVOUT? Current ProgrammingIOUT? Avg Current-Avg RangeAvg ResolutionOutput On/Off Range SwitchingOVSET? Overvoltage OV ProtectionOvercurrent Protection OCP Multiple Output Storage & Recall Clear CommandStatus Reporting UNR +CC Functional Relationship of Status RegistersUNMASK? ASTS?Unmask 2,XXX Service Request Generation FAULT?Bit Assignment of the Serial Poll Register PON RQS ERR RDY FAUSRQ? RQS Bit Reprogramming DelayOther Queries Display On/OffCMODE? TEST?Front Panel Response GP-IB Code Error Messages ExplanationResponse Code Front PanelTEST? Responses Code ExplanationLocal 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 Supply’s GP-IB Address Setting the Reprogramming DelayLocal Control Of System Functions ConditionAddr Enter Displaying Error MessagesSTO Enter RCL EnterTest Equipment and Setup Required Calibration ProceduresFigure A-1. Calibration Setup Table A-1. Calibrat ion Commands Header Channel Data Syntax General Calibration ProcedureSee Figure Page 10 ! Calibration Example Calibration ProgramClear Voltmeter Output Buffer PauseDisp END of Calibration Program Input ANY More Outputs to CALIBRATE? Y or N,X$Fnend Page Path Names Programming With a Series 200/300 ComputerVoltage and Current Programming 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 SeriesTable C-1. Command Summary Command SummaryCommand Description Table C-l. Command Summary ROM? PON?SRQ? 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? ResponsesMake Changes Manual BackdatingII. CE’92 Product Specific Annotations Generally Applicable Annotations6621A 6623AUnited 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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