HP 6624A, 6623A, 6621A manual Range Switching

Page 70

Table 5-4. Programmable Output Ranges for the HP 662lA-6624A and 6627A Supplies

Model

Output

Operating

Output Voltage

Output

Overvoltage

 

Channel

Range *

(Avg.

Current-(Avg.

Range(Avg.

 

 

 

Resolution)

Resolution) **

Resolution

6621A

1 & 2

Low

0 to 7.07 V

0.13 to 10.30 A

0 to 23 V

 

(80 W Low V)

High

0 to 20.2 V

0.13 to 4.12 A

(0.10 V)

 

 

 

(0.006 V)

(0.050 A)

 

6622A

1 & 2

Low

0 to 20.2 V

0.07 to 4.12 A

0 to 55 V

 

(80 W High V)

High

0 to 50.5 V

0.07 to 2.06 A

(0.25 V)

 

 

 

(0.015 V)

(0.020 A)

 

6623A

1

Low

0 to 7.07 V

0.08 to 5.15 A

0 to 23 V

 

(40 W Low V)

High

0 to 20.2 V

0.08 to 2.06 A

(0.10 V)

 

 

 

(0.006 V)

(0.025 A)

 

 

2

Low

0 to 7.07 V

0.13 to 10.30

0 to 23 V

 

(80 W Low V)

High

0 to 20.2 V

0.13 to 4.12 A

(0.10 V)

 

 

 

(0.006 V)

(0.050 A)

 

 

3

Low

0 to 20.2 V

0.05 to 2.06 A

0 to 55 V

 

(40 W High V)

High

0 to 50.5 V

0.05 to 0.824 A

(0.25 V)

 

 

 

(0.015 V)

(0.010 A)

 

6624A

1 & 2

Low

0 to 7.07 V

0.08 to 5.15 A

0 to 23 V

 

(40 W Low V)

High

0 to 20.2 V

0.08 to 2.06 A

(0.10 V)

 

 

 

(0.006 V)

(0.025 A)

 

 

3 & 4

Low

0 to 20.2 V

0.05 to 2.06 A

0 to 55 V

 

(40 W High V)

High

0 to 50.5 V

0.05 to 0.824 A

(0.25 V)

 

 

 

(0.015 V)

(0.010 A)

 

6627A

1-4

Low

0 to 20.2 V

0.05 to 2.06 A

0 to 55 V

 

(40 W High V)

High

0 to 50.5 V

0.05 to 0.824 A

(0.25 V)

 

 

 

(0.015 V)

(0.010 A)

 

*The maximum programmable voltage values for each range are 1% higher than the rated voltage and the maximum programmable current values for each range are 3% higher than the rated current.

**Each output channel "wakes up" with current programmed to a small positive value. This permits the output channel's output voltage to be programmed up without specifically programming the current. An output channel, in fact, cannot be programmed to zero amps. If the output channel receives a command to go to zero amps, or any positive current below the minimum programmable current, it will set itself to the minimum. Note that you can use the DCPON command to cause the ouput channels to wake up with the current programmed to a small negative value. This prevents currrent overshoots at turn on if the unit is operating in constant current mode.

Range Switching

Each output operates in the boundaries of either the low range or the high range as specified in Table 5-4. Refer to page 43 for a detailed description of the dual range operation. The range is selected based on the programmed parameters. If the last parameter (voltage or current) programmed is outside of the existing range, the supply will automatically switch ranges. A sequence of examples are given on the next page to illustrate this operation. Output 1, used in the examples, is a 40 W Low V output.

Example 1: VSET 1,5; ISET 1,2

This example programs output 1 to 5 V and 2 A. These values are in the quadrant of the characteristic curve which has voltage and current boundaries common to both high and low operating ranges.

70 Remote Operation

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Contents Operating Manual HP Part NoCertification Safety Summary Safety Summary Symbol DescriptionDeclaration of Conformity EMCAppendix C--Command Summary Installation ProceduresAppendix A--Calibration Procedure Appendix D--Error MessagesTable Of Contents Remote Operation Local OperationCalibration Command SummaryError Messages Programming With The Series 200/300 ComputerPage Introduction Safety ConsiderationsGeneral Information Instrument and Manual IdentificationDescription AccessoriesOutput Combinations Available Model Output Low Range Values High Range Values Basic OperationHP-IB Board Output Boards Qualifying Conditions SpecificationsDefinitions Output Response Characteristics Specifications Source EffectSupplemental Characteristics Outputs Low High Voltage Temperature CoefficientAC Input Power and Current Outputs Low High Voltage Programming ResolutionReadback Resolution Command Processing Time see FigureOutput Impedance Safety Agency ComplianceDimensions all models Low Voltage High Voltage 80 W Low VoltageGeneral Information General Information General Information General Information Initial Inspection InstallationLocation and Cooling Input Power Requirements Line FuseLine Fuses 100/120 2110-0342 220/240 2110-0055Power Cord Line Voltage ConversionHP-IB Interface Connector Page Getting Started Front Panel Controls and IndicatorsTurning On Your Supply LCL key HP-IB Status AnnunciatorsAlphanumeric LCD Power Supply StatusAnnunciators System Control KeysOutput Control Keys Numeric Entry Keys Line SwitchNormal Self Test Indications Checking Out Your Supply Using Local Control Sample Self-Test Failure DisplayOvervoltage Test Voltage TestCurrent Test OCP Introduction To Remote OperationIset Enter Enter/Output StatementsReading the HP-IB Address Sending a Remote CommandOutput AddrGetting Data From The Supply Often Used CommandsDisp a Disp a Returning the Supply to Local Mode Output Connections and Operating Information Output RangesOperating Quadrants Protection FeaturesRange Selection Typical Output Range Characteristics Connecting the Load Page Feet Wire Bundled 10 a 20 aCross Section Meters Area in mm2 Multiple Loads Remote Voltage SensingPositive and Negative Voltages Remote 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 Battery Charging Power Supply Protection ConsiderationsParallel 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 HP-IB Operation Remote OperationInterface Function HP-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 Iset Fault ?Vset OvsetPage Power Supply Commands Initial ConditionsVoltage Programming Current ProgrammingRange Switching Overvoltage OV Protection Output On/OffOVSET? Overcurrent Protection OCP Multiple Output Storage & RecallClear Command Status ReportingUNR +CC ASTS?Unmask 2,XXX FAULT?UNMASK? Bit Assignment of the Serial Poll RegisterService Request Generation SRQ? PON ?RQS Bit Reprogramming DelayDisplay On/Off Other Queries Explanation Front PanelResponse Code TEST? Responses Code ExplanationPage Local 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 Supplys HP-IB Address ConditionSTO Enter Displaying Error MessagesAddr 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 Clear Voltmeter Output Buffer Calibration Program10 ! Calibration Example PauseDisp END of Calibration Program Input ANY More Outputs to CALIBRATE? Y or N,X$Fnend Page Page Path Names Programming With a Series 200/300 ComputerVoltage and Current Programming 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,ITable C-1. Command Summary Command SummaryCommand Description Table C-l. Command Summary PON? ROM?Previously 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? queryPage Manual Backdating Make Changes6621A Generally Applicable AnnotationsII. CE92 Product Specific Annotations 6623AFar East Or contactEurope 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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