Agilent Technologies 6622A, 6621A, 6627A, 6623A, 6624A manual Remote Voltage Sensing, Multiple Loads

Page 47

Multiple Loads

If you are using the as-shipped terminal block strapping pattern (local sensing) and are connecting multiple loads to one output, connect each load to the output terminals using separate connecting wires (see Figure 4-4). This minimizes mutual coupling effects and takes full advantage of the power supply’s low output impedance. Each pair of wires should be as short as possible and twisted or bundled to reduce lead inductance and noise pickup.

If load considerations require the use of distribution terminals that are located remotely from the supply, connect the power supply output terminals to the remote distribution terminals by a pair of twisted or bundled wires. Connect each load to the distribution terminals separately. Remote voltage sensing is recommended under these circumstances. Sense either at the remote distribution terminals or, if one load is more sensitive than the others, directly at the critical load.

Figure 4-4. Optimum Hookup for Multiple Loads, Local Sensing

NOTE When a load is connected through relay or switch contacts, contact bounce may activate the overvoltage circuit and shut down the supply. Therefore, it is recommended that the output be downprogrammed to 0 or turned-off (disabled) before the relay (or switch) contact is opened or closed .

Positive and Negative Voltages

Either positive or negative voltages can be obtained from the supply by grounding (or "commoning") one of the output terminals. Always use two wires to connect the load to the supply regardless of where or how the system is grounded.

This supply can be operated with any output terminal ± 240 Vdc (including output voltage) from ground.

Remote Voltage Sensing

Because of the unavoidable voltage drop developed in the load leads, the as-shipped terminal block strapping pattern shown in Figure 4-4 does not provide the best possible voltage regulation at the load. The remote sensing connections shown in Figure 4-5 improve the voltage regulation at the load by monitoring the voltage there instead of at the supply’s output terminals. This allows the power supply to automatically compensate for the voltage drop in the load leads. Remote sensing is especially useful for CV operation with load impedances that vary or have significant lead resistance. It has no effect during CC operation. Because sensing is independent of other power supply functions, remote sensing can be used

Output Connections and Operating Information 49

Page 46 Page 48
Image 47
Page 46 Page 48
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 Definitions SpecificationsQualifying Conditions Output Response Characteristics Source Effect SpecificationsOutputs Low High Voltage Temperature Coefficient Supplemental CharacteristicsOVP Readback ResolutionLow Voltage General Information General Information General Information General Information Location and Cooling InstallationInitial Inspection Line Fuse Input Power RequirementsLine Fuses GP-IBLine Voltage Conversion Power CordGP-IB Interface Connector Turning On Your Supply Front Panel Controls and IndicatorsGetting Started 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 ControlCurrent Test Voltage TestOvervoltage Test RST Introduction To Remote OperationIset Enter OCPAddr Sending a Remote CommandOutput Reading the GP-IB AddressDisp a Often Used CommandsGetting Data From The Supply Disp a Returning the Supply to Local Mode Output Ranges Output Connections and Operating InformationRange Selection Protection FeaturesOperating Quadrants 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 Parallel Operation Power Supply Protection ConsiderationsBattery Charging 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 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 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 SwitchingOvercurrent Protection OCP Overvoltage OV ProtectionOVSET? Status Reporting Clear CommandMultiple Output Storage & Recall UNR +CC Functional Relationship of Status RegistersUnmask 2,XXX ASTS?UNMASK? 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 See Figure General Calibration ProcedureTable A-1. Calibrat ion Commands Header Channel Data Syntax Page Pause Calibration Program10 ! Calibration Example Clear Voltmeter Output BufferFnend 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 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 Description Command SummaryTable C-1. Command Summary 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.
Top Page Image Contents