Service Self-Test Procedures 106 | Agilent Technologies E3634A

Chapter 5 Service

Self-Test Procedures

106

Image 107

Agilent Technologies E3634A, E3633A manual Service Self-Test Procedures 106

Contents

$JLOHQW$DQG$ &3RZHU6XSSOLHV 3DUW1XPEHU $SULO RUDUUDQW\LQIRUPDWLRQUHIHUWRWKHEDFNRIWKHPDQXDO‹&RS\ULJKW$JLOHQW7HFKQRORJLHV,QF $OO5LJKWV5HVHUYHG Service Guide Agilent E3633A and E3634A DC Power Supplies Convenient bench-top featuresFlexible system features The Front Panel at a Glance For Agilent E3633A Model **For Agilent E3634A Model Front-Panel Voltage and Current Limit Settings Display Annunciators Use the front-panel I/OConfig key to The Rear Panel at a Glance In This Book Page Contents Contents Chapter 4 Theory of Operation Contents Chapter 3 Calibration Procedures Continued Chapter 6 Replaceable Parts Contents Chapter 5 ServiceChapter 7 Backdating Chapter 8 Schematics Contents Specifications Specifications Table 1-1. Performance Specifications Performance SpecificationsChapter 1 Specifications Performance Specifications Chapter 1 Specifications Performance Specifications Temperature Coefficient, ±% of output + offset Supplemental CharacteristicsChapter 1 Specifications Supplemental Characteristics Remote Sensing Capability SCPI Standard Commands for Programmable Instruments 20 to 70 C for storage environment Chapter 1 Specifications Supplemental Characteristics Quick Start Local Quick Start 4 Enable the outputs To Prepare the Power Supply for UseChapter 2 Quick Start To Prepare the Power Supply for Use 3 Connect the power cord and turn on the power supply 100 or 115 Vac, 6.3 AT fuse 230 Vac, 3.15 AT fuse 2 Enable the outputs To Check the Rated Voltages of the Power SupplyChapter 2 Quick Start To Check the Rated Voltages of the Power Supply 1 Turn on the power supply Output On/Off Display Limit Voltage Current To Check the Rated Currents of the Power Supply page 123 in chapter 5 of the User’s Guide To Use the Power Supply in Constant Voltage Mode 1 Voltage Current Display Limit Output On/Off Display Limit To Use the Power Supply in Constant Current Mode Check that the Limit annunciator still flashes. Set the knob for current control. The second digit of the ammeter will be flashing. Change the flashing digit using the resolution selection keys and adjust the knob to the desired output current Chapter 2 Quick Start To Store and Recall the Instrument State 1 Set up the power supply for the desired operating stateTo Store and Recall the Instrument State STORE Memory location “1” will be displayed in the recall mode DONERECALL OVP ON Setting the OVP Level and Enable the OVP CircuitTo Program Overvoltage Protection LEVEL 22.0V E3633A LEVEL 55.0V E3634A OVP CLEAR Checking OVP OperationClearing the Overvoltage Condition CHANGED Adjust OVP trip level OCP ON Setting the OCP Level and Enable the OCP CircuitTo Program Overcurrent Protection LEVEL 22.0 A E3633A LEVEL 7.5 A E3634A OCP CLEAR Checking OCP OperationClearing the Overcurrent Condition Adjust OCP trip level To rack mount a single instrument, order adapter kit To Rack Mount the Power SupplyTo Rack Mount the Power Supply To remove the rubber bumper, stretch a corner and then slide it off To Rack Mount the Power Supply Chapter 2 Quick Start To Rack Mount the Power Supply Calibration Procedures Calibration Procedures Calibration Interval Agilent Technologies Calibration Services C a u t i o n Automating Calibration ProceduresChapter 3 Calibration Procedures Automating Calibration Procedures Test Considerations Table 3-1. Recommended Test Equipment Chapter 3 Calibration Procedures Recommended Test EquipmentRecommended Test Equipment Performance Verification Tests Performance Verification TestsSelf-Test Electronic Load Setup for Most TestsMeasurement Techniques Programming General Measurement TechniquesCurrent-Monitoring Resistor Voltage Programming and Readback Accuracy Constant Voltage Test SetupConstant Voltage CV Verifications CV Load Effect Load Regulation CV Source effect Line Regulation CV PARD Ripple and Noise Load Transient Response Time Current Programming and Readback Accuracy Constant Current Test SetupConstant Current CC Verifications CC Load Effect Load Regulation CC PARD Ripple and Noise CC Source Effect Line Regulation Common Mode Current Noise Chapter 3 Calibration Procedures Common Mode Current Noise Performance Test Record for Agilent E3633A and E3634A Performance Test Record for Agilent E3633A and E3634ACV Performance Test Record CC Performance Test Record Calibration Security Code Chapter 3 Calibration Procedures Calibration Security CodeSee the procedure on page 003633 CODE E3633A 003634 CODE E3634A To Unsecure the Power Supply for CalibrationSECURED 000000 CODE UNSECURED To Unsecure the Power Supply Without the Security Code CALSECSTAT OFFON,code Chapter 3 Calibration Procedures Calibration CountCalibration Count Calibration Message General Calibration/Adjustment Procedure V LO 0.5000 CAL SETUPFront Panel Voltage and Current Calibration 30 LEFT V HI 19.500 V E3633A V LO 0.4500V MI 10.000 V E3633A V MI 10.001 For example, if the DVM reads 19.495 V, adjust the voltage to 19.495 V using the knob and arrow keys V HI 19.495 I MI 9.999 A I LO 0.500 A E3633AI LO 0.499 A I MI 10.000 A E3633A If the entered number is within an acceptable range, an ‘‘ENTERED’’ message appears for one second. If the entered number is not correct, an ‘‘MIN VALUE’’ or ‘‘MAX VALUE’’ message appears for one second and the display shows the middle current calibration point again. The display now shows the high current calibration point I HI 19.500 A E3633AI HI 19.499 A CAL MODE Aborting a Calibration in Progress Calibration Record for Agilent E3633A/E3634A Calibration Record for Agilent E3633A/E3634A Self-Test Error Messages Error MessagesChapter 3 Calibration Procedures Error Messages System Error Messages Calibration Error Messages An Example program of Excel 97 for Calibration An Example program of Excel 97 for Calibration An Example program of Excel 97 for Calibration Chapter 3 Calibration Procedures An Example program of Excel 97 for Calibration Chapter 3 Calibration Procedures An Example program of Excel 97 for Calibration Chapter 3 Calibration Procedures An Example program of Excel 97 for Calibration Chapter 3 Calibration Procedures An Example program of Excel 97 for Calibration End of Program Declaration for Windows 95/NT Theory of Operation Block Diagram Overview, starting on page Chapter 4 Theory of Operation Block Diagram Overview Block Diagram Overview Block Diagram Chapter 4 Theory of Operation AC Input and Bias Supplies AC Input and Bias Supplies Chapter 4 Theory of Operation Floating Logic Floating Logic U20 Internal Signal Chapter 4 Theory of Operation D-to-A Converter D-to-A Converter Chapter 4 Theory of Operation A-to-D Converter A-to-D Converter Chapter 4 Theory of Operation Power Mesh and Control Power Mesh and Control Two error amplifiers are included in a CV/CC supply, one for controlling output voltage, the other for controlling output current. Since the constant voltage amplifier tends to achieve zero output impedance and alters the output current whenever the load resistance changes, while the constant current amplifier causes the output impedance to be infinite and changes the output voltage in response to any load resistance change, it is obvious that the two amplifiers can not operate simultaneously. For any given value of load resistance, the power supply must act either as a constant voltage source or as a constant current source - it can not be both transfer between these two modes is accomplished at a value of load resistance equal to the ratio of the output voltage control setting to the output current control setting Chapter 4 Theory of Operation Earth-Referenced Logic Earth-Referenced LogicFront Panel Service Service Does the Power Supply Fail Self-Test? Operating ChecklistIs the Power Supply Inoperative? Express Exchange U.S.A. only Types of Service AvailableStandard Repair Service worldwide Agilent Technologies recommends that you always insure shipments Chapter 5 Service Repacking for ShipmentRepacking for Shipment Surface Mount Repair Electrostatic Discharge ESD PrecautionsTo Replace the Power-Line Fuse Chapter 5 Service Electrostatic Discharge ESD Precautions Installation Procedure To Disconnect the Output Using an External Relay Unit Fails Self-Test Troubleshooting HintsUnit Reports Errors 740 to Unit is Inoperative Bias Supplies Problems Complete Self-Test Self-Test ProceduresPower-On Self-Test ±10% tolerance Chapter 5 Service Self-Test Procedures 106 Replaceable Parts Backdating and Part Changes Replaceable PartsTo Order Replaceable Parts Chapter 6 Replaceable Parts E3633/E3634-60002 Main PC AssemblyE3633/E3634-60002 Main PC Assembly Chapter 6 Replaceable Parts E3633/E3634-60002 Main PC Assembly Chapter 6 Replaceable Parts E3633/E3634-60002 Main PC Assembly Chapter 6 Replaceable Parts E3633/E3634-60002 Main PC Assembly Chapter 6 Replaceable Parts E3633/E3634-60002 Main PC Assembly Chapter 6 Replaceable Parts E3633/E3634-60002 Main PC Assembly Chapter 6 Replaceable Parts Designator Chapter 6 Replaceable Parts For use with E3634A model only E3633-60003 Front-Panel Display PC Assembly E3633-60003 Front-Panel Display PC Assembly E3633-60011 Front Frame Assembly E3633-60011 Front Frame AssemblyE3633A/E3634A Power Supply Assembly Manufacturer’s List Manufacturer’s List Chapter 6 Replaceable Parts Manufacturer’s List 122 Backdating Backdating Schematics Mechanical Disassembly, on page Page Page Page Page Page Page Page Page Copyright 1998 Agilent Technologies All Rights Reserved