HP User Manual for Power Supplies: 6621A, 6623A, and 6624A Models
Page 12

Accessories

10833A HP-IB cable, 1 m (3.3 ft)

10833B HP-IB cable, 2 m (6.6 ft)

10833C HP-IB cable, 4 m (13.2 ft)

10833D HP-IB cable, 0.5 m (1.6 ft)

10834A HP-IB connector extender Slide mount kit (1494-0059)

Description

The HP 6621A-6624A, and 6627A Multiple Output Linear Power Supplies feature a combination of programming capabilities and linear power supply performance that make systems applications. The five models in this family offer a total of up to 200 watts of output power, with voltages up to 50 volts and currents up to 10 amps. The output combinations that correspond to each model are shown in Table 1-1. Each isolated output can supply power in two ranges as shown in Figure 1-1. This flexibility allows you to use the same output to power loads with different voltage and current requirements. No separate command is required to program ranges; the power supply automatically selects one of the operating ranges based on the last parameter (voltage or current) that is set. Additionally, each output contains an active downprogrammer, which means that voltage downprogramming can be accomplished as quickly as upprogramming, even without a load.

Table 1-1. Output Combinations Available

Model

 

Output 1

 

Output 2

Output 3

Output 4

HP 6621A

80

W Low Voltage

80

W Low Voltage

-

-

HP 6622A

80

W High Voltage

80

W High Voltage

-

-

HP 6623A

40

W Low Voltage

80

W Low Voltage

40 W High Voltage

-

HP 6624A

40

W Low Voltage

40

W Low Voltage

40 W High Voltage

40 W High Voltage

HP 6627A

40

W High Voltage

40

W High Voltage

40 W High Voltage

40 W High Voltage

The output voltage and current for any output can be monitored with the front panel display. Output specific error messages are also displayed. Front panel annunciators show the operating status of the instrument. The front panel keypad lets you set and readback the voltage limit, current limit, and overvoltage trip level of any output. With the keypad, you can also enable or disable outputs, mask and delay bits in the fault register, enable overcurrent protection, reset overvoltage and overcurrent protection, and return to local operating mode.

Your multiple output power supply can be both a listener and a talker on the HP-IB. (HP-IB is Hewlett-Packard's implementation of IEEE-488). The built-in interface is tailored to the supply, resulting in simpler programming. Voltage and current settings can be sent directly to the specified dual range output in volts and amps.

Service can be requested from your power supply for up to ten reasons. The supply responds to a serial poll by identifying the output on which the fault occurred. Self-contained measurement and readback capability eliminate the need for externally scanning the outputs using a separate DVM. Upon command the supply will measure its output voltage or current and return the value on the HP-IB. The following functions are implemented via the HP-IB:

Voltage and current programming.

Voltage and current measurement and readback.

Present and accumulated status readback.

Programmable service request mask.

Programmable overvoltage and overcurrent protection.

12 General Information

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Contents Operating Manual HP Part NoCertification Safety Summary Safety Summary Symbol DescriptionDeclaration of Conformity EMCInstallation Procedures Appendix A--Calibration ProcedureAppendix C--Command Summary Appendix D--Error MessagesTable Of Contents Remote Operation Local OperationCommand Summary Error MessagesCalibration Programming With The Series 200/300 ComputerPage Safety Considerations General InformationIntroduction Instrument and Manual IdentificationAccessories DescriptionOutput Combinations Available Model Basic Operation Output Low Range Values High Range ValuesHP-IB Board Output Boards Specifications Qualifying ConditionsDefinitions Output Response Characteristics Specifications Source EffectSupplemental Characteristics Outputs Low High Voltage Temperature CoefficientOutputs Low High Voltage Programming Resolution Readback ResolutionAC Input Power and Current Command Processing Time see FigureSafety Agency Compliance Dimensions all modelsOutput Impedance Low Voltage High Voltage 80 W Low VoltageGeneral Information General Information General Information General Information Installation Initial InspectionLocation and Cooling Input Power Requirements Line FuseLine Fuses 100/120 2110-0342 220/240 2110-0055Power Cord Line Voltage ConversionHP-IB Interface Connector Page Front Panel Controls and Indicators Getting StartedTurning On Your Supply LCL key HP-IB Status AnnunciatorsPower Supply Status AnnunciatorsAlphanumeric LCD System Control KeysOutput Control Keys Line Switch Numeric Entry KeysNormal Self Test Indications Checking Out Your Supply Using Local Control Sample Self-Test Failure DisplayVoltage Test Overvoltage TestCurrent Test Introduction To Remote Operation Iset EnterOCP Enter/Output StatementsSending a Remote Command OutputReading the HP-IB Address AddrOften Used Commands Getting Data From The SupplyDisp a Disp a Returning the Supply to Local Mode Output Connections and Operating Information Output RangesProtection Features Operating QuadrantsRange Selection Typical Output Range Characteristics Connecting the Load Page Wire Bundled 10 a 20 a FeetCross Section Meters Area in mm2 Remote Voltage Sensing Multiple LoadsPositive and Negative Voltages Remote Voltage Sensing Remote Sense ConnectionsOutput Type Formula Output Noise ConsiderationsProgramming Response Time with an Output Capacitor Open Sense LeadsOvervoltage Trigger Connections External Trigger CircuitEquivalent Internal OV Trigger Circuit Power Supply Protection Considerations Battery ChargingParallel Operation 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 Page Remote Operation HP-IB OperationInterface Function HP-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 Fault ? VsetIset OvsetPage Power Supply Commands Initial ConditionsVoltage Programming Current ProgrammingRange Switching Output On/Off Overvoltage OV ProtectionOVSET? Overcurrent Protection OCP Multiple Output Storage & RecallClear Command Status ReportingUNR +CC ASTS?FAULT? UNMASK?Unmask 2,XXX Bit Assignment of the Serial Poll RegisterService Request Generation SRQ? PON ?Reprogramming Delay RQS BitDisplay On/Off Other Queries Front Panel ExplanationResponse Code TEST? Responses Code ExplanationPage Local Mode Local OperationLocal Control Of Output Functions GeneralSetting Voltage Setting CurrentSetting Overvoltage Protection Resetting Overvoltage ProtectionResetting Overcurrent Protection Displaying the Contents of the Fault RegisterSetting the Reprogramming Delay Setting the Supplys HP-IB AddressLocal Control Of System Functions ConditionDisplaying Error Messages Addr EnterSTO Enter RCL EnterPage Calibration Procedures Test Equipment and Setup RequiredFigure A-1. Calibration Setup General Calibration Procedure Are not stored. Exercise care when moving the leads Calibration Program 10 ! Calibration ExampleClear Voltmeter Output Buffer PauseInput ANY More Outputs to CALIBRATE? Y or N,X$ Disp END of Calibration ProgramFnend Page Page Programming With a Series 200/300 Computer Path NamesVoltage and Current Programming Voltage and Current Programming With Variables Voltage and Current ReadbackProgramming Power Supply Registers Print OUTPUT1 is in CV Mode END ifService Request and Serial Poll Present StatusEnable Intr OFF IntrPrint Overvoltage on Output #1 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 Summary Table C-1. Command SummaryCommand Description Table C-l. Command Summary PON? ROM?Previously Error Codes and Messages Power-On Self Test Messages Error ResponsesTable D-l. Power-On Self Test Error Message Test ResponsesTable D-2. Error Responses Error Code Message Explanation ERR? query ERR keyTable D-3. TEST? Responses Response Code Explanation TEST? queryPage Manual Backdating Make ChangesGenerally Applicable Annotations II. CE92 Product Specific Annotations6621A 6623AOr contact EuropeFar East Latin America

6624A, 6621A, 6623A specifications

The HP 6623A, 6621A, and 6624A are precision DC power supplies widely recognized for their reliability and performance in various laboratory and industrial applications. These models are part of HP's 662X series, designed to cater to the needs of engineers, researchers, and technicians who require accurate power sources for their testing and development activities.

The main features of the HP 6623A, 6621A, and 6624A include their high stability, low ripple, and excellent load regulation, ensuring that the output voltage and current remain stable during testing. The power supplies provide multiple output channels, allowing users to power multiple devices simultaneously. The flexibility in setting voltage and current levels makes these models ideal for a wide range of applications, including semiconductor testing, device characterization, and system integration.

One of the standout technologies in the HP 662X series is the use of smart design techniques that minimize noise and enhance output performance. These power supplies incorporate advanced feedback mechanisms to maintain steady output, even under varying load conditions. Additionally, they feature programmable outputs, which means users can adjust the output levels through a connected computer or control system, streamlining the testing process and improving efficiency.

The HP 6623A model offers three independent outputs, with total power capabilities of 40 watts. It includes a 0-20V output, which can deliver up to 2A of current, along with two additional outputs that are adjustable. The 6621A provides a single output option, delivering a maximum of 20V and 2A, making it well-suited for simple applications where a single power source is required. In contrast, the HP 6624A stands out with its four independent output channels, providing a total of 60 watts, making it the most versatile of the three models.

Characteristics of these power supplies include user-friendly interfaces, allowing for easy configuration and monitoring of settings. LED indicators provide real-time feedback on voltage and current levels, enabling users to quickly assess the performance of their tests. Moreover, built-in protection features safeguard both the power supply and the connected devices from overvoltage and overcurrent conditions.

Overall, the HP 6623A, 6621A, and 6624A power supplies embody advanced engineering and design, making them invaluable tools for professionals looking for high-quality, reliable power sources for their electronic testing needs.
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