Agilent Technologies 6623A, 6621A, 6627A Getting Data From The Supply, Disp a, Often Used Commands

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Getting Data From The Supply

The supply is capable of measuring the values of its output parameters in response to queries. In this example, the query asks the supply to measure the output voltage at output 1.

When you send a query from remote, the supply does not display the response as it did when you executed the command from the front panel. Instead, it holds the response in an output buffer. The output buffer is a register that holds information until it is read by the computer or is replaced with new information.

NOTE

On an Agilent Series 200 Computer, the A variable must be declared before you do the following steps.

 

Refer to your computer’s operating manual for more information.

Use your computer’s enter statement to get the response from the output buffer. For example, execute:

ENTER 705; A

Followed by:

DISP A

The ENTER statement enters whatever is in the supply’s output buffer into the computer’s A variable. The DISP statement displays the A variable ’ s contents on the computer’s display.

Often Used Commands

The command set contains over forty commands that allow you to program the power supply in a variety of applications. Within this command set, however, is a small subset of commands that are all you need for most applications. These commands are: VSET, ISET, VOUT?, IOUT?, OUT, OVSET, and OCP.

Each of these commands is briefly discussed in the following paragraphs to help you get started in programming your supply. To know more about these commands, refer to Chapter 5.

Voltage and Current Programming. You can send voltage and current values to the power supply directly in volts or amps The following examples use voltage and current values that are within the range of any output that the power supply provides.

40 Getting Started

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Contents Operating Manual Agilent Part NoCertification Safety Summary Safety Summary Environmental ConditionsDeclaration of Conformity EMCWhat this Manual Contains Table Of Contents Remote Operation Local OperationCalibration Command SummaryError Messages Programming With a Series 200/300 ComputerIntroduction Safety ConsiderationsGeneral Information Instrument and Manual IdentificationModel AccessoriesDescription Output Combinations AvailableBasic Operation GP-IB BoardOutput Boards Definitions SpecificationsQualifying Conditions Output Response Characteristics Specifications Source EffectSupplemental Characteristics Outputs Low High Voltage Temperature CoefficientReadback Resolution OVPLow Voltage General Information General Information General Information General Information Location and Cooling InstallationInitial Inspection Input Power Requirements Line FuseGP-IB Line FusesPower Cord Line Voltage ConversionGP-IB Interface Connector Turning On Your Supply Front Panel Controls and IndicatorsGetting Started 15V 35A Output Controls and Indicators Number Controls/lndicators Test Pattern of all Display Segments at Power-on Normal Self Test IndicationsChecking Out Your Supply Using Local Control Sample Self-Test Failure DisplayCurrent Test Voltage TestOvervoltage Test OCP Introduction To Remote OperationIset Enter RSTReading the GP-IB Address Sending a Remote CommandOutput AddrDisp a Often Used CommandsGetting Data From The Supply Disp a Returning the Supply to Local Mode Output Connections and Operating Information Output RangesRange Selection Protection FeaturesOperating Quadrants Typical Output Range Characteristics Connecting the Load Page Wire Size Wire Bundled 10 a 20 a AWGRemote Voltage Sensing Multiple LoadsRemote Voltage Sensing Remote Sense ConnectionsProgramming Response Time with an Output Capacitor Output Type FormulaOutput Noise Considerations Open Sense LeadsOvervoltage Trigger Connections External Trigger CircuitEquivalent Internal OV Trigger Circuit Parallel Operation Power Supply Protection ConsiderationsBattery Charging Maximum Allowable Voltage Setting CV OperationCC Operation Remote SensingSeries Operation 13. Series Connections with Local Sensing CV OperationSpecifications for Series Operation 14. Series Connections with Remote SensingPage Interface Function Remote OperationGP-IB Operation GP-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 Power Supply Commands Header Output Channel Data RangePower Supply Commands Initial ConditionsVOUT? Voltage ProgrammingVSET? Current ProgrammingAvg Current-Avg RangeAvg Resolution IOUT?Range Switching Output On/OffOvercurrent Protection OCP Overvoltage OV ProtectionOVSET? Status Reporting Clear CommandMultiple Output Storage & Recall Functional Relationship of Status Registers UNR +CCUnmask 2,XXX ASTS?UNMASK? Bit Assignment of the Serial Poll Register FAULT?Service Request Generation PON RQS ERR RDY FAUSRQ? Reprogramming Delay RQS BitDisplay On/Off Other QueriesTEST? CMODE?GP-IB Code Error Messages Explanation Front Panel ResponseTEST? Responses Front PanelResponse Code Code ExplanationLocal Control Of Output Functions Local ModeLocal Operation GeneralSetting Voltage Setting CurrentResetting Overcurrent Protection Setting Overvoltage ProtectionResetting Overvoltage Protection Displaying the Contents of the Fault RegisterLocal Control Of System Functions Setting the Reprogramming DelaySetting the Supply’s GP-IB Address ConditionSTO Enter Displaying Error MessagesAddr Enter RCL EnterCalibration Procedures Test Equipment and Setup RequiredFigure A-1. Calibration Setup See Figure General Calibration ProcedureTable A-1. Calibrat ion Commands Header Channel Data Syntax Page Clear Voltmeter Output Buffer Calibration Program10 ! Calibration Example PauseFnend Input ANY More Outputs to CALIBRATE? Y or N,X$Disp END of Calibration Program Page Voltage and Current Programming Programming With a Series 200/300 ComputerPath Names Voltage and Current Programming With Variables Voltage and Current ReadbackService Request and Serial Poll Programming Power Supply RegistersPrint OUTPUT1 is in CV Mode END if Present StatusPrint ’’OVERVOLTAGE on Output #1 Enable IntrOFF Intr Print Overvoltage on Output #2Error Detection Programming Outputs Connected In Parallel Stored Operating StatesInput Enter Voltage LIMIT’’,V Input Enter Operating VOLTAGE,V1Programming Outputs Connected In Series Input Enter the Desired Current Limit POINT,ICommand Description Command SummaryTable C-1. Command Summary Table C-l. Command Summary PON? ROM?SRQ? Table D-l. Power-On Self Test Error Message Error Codes and MessagesPower-On Self Test Messages Error Responses Test ResponsesTable D-2. Error Responses Error Code Message Explanation ERR? query ERR keyTable D-3. TEST? Responses Response Code Explanation TEST? queryManual Backdating Make Changes6621A Generally Applicable AnnotationsII. CE’92 Product Specific Annotations 6623AAgilent Sales and Support Office United States Latin AmericaManual 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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