Agilent Technologies 66332A Organization, Safety Considerations, Related Documents, Chapter

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1

Introduction

Organization

This manual contains information for troubleshooting and repairing to the component level the Agilent Model 66332A Dynamic Measurement DC Source and the Agilent Model 6632B, 6633B, 6634B System DC Power Supplies. Hereafter all models will be referred to as the dc power supply.

This manual is organized as follows:

Chapter 1

Organization

Chapter 2

Performance tests

Chapter 3

Troubleshooting procedures

Chapter 4

Principles of operation on a block-diagram level

Chapter 5

Replaceable parts

Chapter 6

Diagrams

Safety Considerations

WARNING: Hazardous voltages exist within the dc power supply chassis.

This dc power supply; is a Safety Class I instrument, which means it has a protective earth terminal. This terminal must be connected to earth ground through a power source equipped with a 3-wire, ground receptacle. Refer to the "Safety Summary" page at the beginning of this manual for general safety information. Before operation or repair, check the dc power supply and review this manual for safety warnings and instructions. Safety warnings for specific procedures are located at appropriate places in the manual.

Related Documents

The following documents are shipped with your dc power supply:

aa User’s Guide, containing installation, operating, and calibration information

aa Programming Guide, containing detailed GPIB programming information.

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Contents Agilent Part No Microfiche No September Certification Warranty InformationBefore Applying Power Safety SummarySymbol Description Safety Symbol DefinitionsInstrument Identification Printing HistoryTable of Contents Disassembly Procedures Initialization ROM UpgradeIntroduction General Schematic Notes Backdating Post-repair CalibrationPage Organization Safety ConsiderationsRelated Documents ChapterElectrostatic Discharge RevisionsManual Revisions Firmware RevisionsTest Equipment Required IntroductionMeasurement Techniques Test SetupPerformance Tests Operation Verification TestsElectronic Load Current-Monitoring ResistorConstant Voltage CV Tests CV SetupVoltage Programming and Readback Accuracy CV Load EffectCV Noise Pard CV Source EffectCC Setup Transient Recovery TimeConstant Current CC Tests Current Programming and Readback AccuracyCurrent Sink -CC Operation Low Range Current Readback AccuracyCC Load and Line Regulation CC Source Effect CC Load EffectCC Noise Pard Performance Test Equipment FormPerformance Test Record Forms Iout Iout + 4.3 mA Iout + 0.25 mAIout Iout + 2.3 mA Troubleshooting Flow Charts Overall TroubleshootingTest Equipment Required for Troubleshooting Type Purpose Recommended ModelSheet 1. Main Flowchart Sheet 2. Main Flowchart Sheet 3. Main Flowchart Sheet 4. OV at Turn-On Sheet 5. OV at Turn-On Sheet 6. FS Indicated but Fuse OK Sheet 7. No Output Voltage Sheet 8. No Output Voltage Sheet 9 No Output Voltage Sheet 10. No Current Limit Sheet 11. Unit Does Not OV Sheet 12. High Output Voltage Power-on Self-test Failures Specific Troubleshooting ProceduresSelf-Test Error Codes/Messages Error Code Description Probable CauseBias and Rail Voltages CV/CC Status Annunciators TroubleshootingBias and Reference Voltages Bias Test Point Common MeasurementVoltage Measurements at J307 A2 Interface to A1 Main board J307 Voltage MeasurementsManual Fan Speed Control Disabling Protection FeaturesInhibit Calibration Switch Calibration PasswordPost-repair Calibration Upgrade Procedure ROM UpgradeInitialization Identifying the FirmwareDisassembly Procedures Remote sense leads before attempting disassemblyList of Required Tools Cover, Removal and Replacement A2 Interface Board, Removal and ReplacementFront Panel Assembly, Removal and Replacement A3 Front Panel Board, Removal and Replacement S1 Line Switch, Removal and ReplacementT1 Power Transformer, Removal and Replacement A1 Main Control BoardTransformer Wiring Line Voltage WiringInterface Signals Power Supply Interface signalsConnector Signal Description A2 Interface Circuits A3 Front Panel CircuitsPrimary Interface Secondary InterfaceA2/A3 Block Diagram A1 Main Board Circuits Power CircuitsA1 Block Diagram Control Circuits Principles of Operation Page Designator Model PartNumber Qty Description Chassis, ElectricalDesignator Model Part Number Qty Description Chassis, MechanicalMechanical Parts ldentification A1 Control Board PC Board Assembly Replaceable Parts Replaceable Parts Replaceable Parts Replaceable Parts Replaceable Parts Replaceable Parts Replaceable Parts Replaceable Parts Replaceable Parts Replaceable Parts Replaceable Parts Binding Post Option #020 A5 AC input/RFI BoardRelay Option #760 Model-dependent Components General Schematic NotesDiagrams A1 Board Component Locations R434 825 R500 175 325 R435 R505 A1 Board Component Locations A4 and A6 Board Component Locations A1 Board schematic sheet A1 Board schematic sheet A1 Board schematic sheet A6 Relay Option Board schematic Index Index
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6632B, 6633B, 66332A, 6634B specifications

Agilent Technologies, a leader in electronic test and measurement solutions, offers a range of power supplies designed to meet various application needs. Notable models include the 6632B, 6634B, 66332A, 6633B, and 6612C. Each of these units provides unique features and technologies that cater to researchers, engineers, and technicians in the industry.

The Agilent 6632B is a single-output DC power supply that delivers up to 30V and 3A. It is known for its excellent load regulation and low noise, making it ideal for sensitive electronic testing. The model includes built-in voltage and current measurement capabilities, allowing users to monitor output conditions in real time. The 6632B is commonly used in laboratory environments, educational institutions, and manufacturing lines.

Moving to the 6634B, this model offers dual-output capabilities with a maximum output of 30V and 6A. This versatility enables simultaneous powering of two different devices or circuit sections. It also features parallel and series operation options, allowing users to create a custom power supply configuration for specific applications. With a programmable interface, the 6634B simplifies test automation, ensuring efficiency in extensive testing scenarios.

The Agilent 66332A stands out with its precision and high performance. This power supply provides three outputs—two programmable and one fixed—yielding flexible power configurations. Its intuitive user interface allows easy adjustment of voltage and current settings. The device is equipped with extensive protection features to safeguard both the power supply and the connected load against faults. It is an excellent choice for complex testing setups that require reliable power.

The 6633B model offers a high-performance power supply with dual outputs, similar to the 6634B but with enhanced specifications. It can provide up to 40V and 2A per channel, delivering precision for demanding applications. This model is particularly suited for industries focused on high-reliability applications, such as telecommunications and aerospace.

Lastly, the Agilent 6612C is a compact and lightweight power supply providing single-output up to 60V and 2A. This model is designed for simplicity and ease of use, making it an excellent choice for portable applications. The 6612C’s unique characteristics include a compact design and user-friendly controls, which facilitate operation in field settings.

In summary, Agilent Technologies’ power supply models—6632B, 6634B, 66332A, 6633B, and 6612C—offer an array of features that cater to a wide range of testing and research needs, ensuring reliable power delivery in various contexts.