Theory of Operation | Agilent Technologies E3634A, E3633A manual

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Agilent Technologies E3634A, E3633A manual Theory of Operation, Block Diagram Overview, starting on page

Contents

‹&RS\ULJKW$JLOHQW7HFKQRORJLHV,QF $OO5LJKWV5HVHUYHG 3DUW1XPEHU $SULO RUDUUDQW\LQIRUPDWLRQUHIHUWRWKHEDFNRIWKHPDQXDOService Guide $JLOHQW$DQG$ &3RZHU6XSSOLHV Flexible system features Convenient bench-top featuresAgilent E3633A and E3634A DC Power Supplies 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 7 Backdating Chapter 8 Schematics Contents Chapter 5 ServiceChapter 6 Replaceable Parts Contents Specifications Specifications Chapter 1 Specifications Performance SpecificationsPerformance Specifications Table 1-1. Performance Specifications Chapter 1 Specifications Performance Specifications Chapter 1 Specifications Supplemental Characteristics Supplemental CharacteristicsRemote Sensing Capability Temperature Coefficient, ±% of output + offset SCPI Standard Commands for Programmable Instruments 20 to 70 C for storage environment Chapter 1 Specifications Supplemental Characteristics Quick Start Local Quick Start Chapter 2 Quick Start To Prepare the Power Supply for Use To Prepare the Power Supply for Use3 Connect the power cord and turn on the power supply 4 Enable the outputs 100 or 115 Vac, 6.3 AT fuse 230 Vac, 3.15 AT fuse Chapter 2 Quick Start To Check the Rated Voltages of the Power Supply To Check the Rated Voltages of the Power Supply1 Turn on the power supply 2 Enable the outputs 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 To Store and Recall the Instrument State 1 Set up the power supply for the desired operating stateSTORE Chapter 2 Quick Start To Store and Recall the Instrument State RECALL DONEMemory location “1” will be displayed in the recall mode To Program Overvoltage Protection Setting the OVP Level and Enable the OVP CircuitLEVEL 22.0V E3633A LEVEL 55.0V E3634A OVP ON Clearing the Overvoltage Condition Checking OVP OperationCHANGED OVP CLEAR Adjust OVP trip level To Program Overcurrent Protection Setting the OCP Level and Enable the OCP CircuitLEVEL 22.0 A E3633A LEVEL 7.5 A E3634A OCP ON Clearing the Overcurrent Condition Checking OCP OperationOCP CLEAR Adjust OCP trip level To Rack Mount the Power Supply To Rack Mount the Power SupplyTo remove the rubber bumper, stretch a corner and then slide it off To rack mount a single instrument, order adapter kit 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 Chapter 3 Calibration Procedures Automating Calibration Procedures Automating Calibration ProceduresTest Considerations C a u t i o n Recommended Test Equipment Chapter 3 Calibration Procedures Recommended Test EquipmentTable 3-1. Recommended Test Equipment Self-Test Performance Verification TestsPerformance Verification Tests Measurement Techniques Setup for Most TestsElectronic Load Current-Monitoring Resistor General Measurement TechniquesProgramming Constant Voltage CV Verifications Constant Voltage Test SetupVoltage Programming and Readback Accuracy CV Load Effect Load Regulation CV Source effect Line Regulation CV PARD Ripple and Noise Load Transient Response Time Constant Current CC Verifications Constant Current Test SetupCurrent Programming and Readback Accuracy 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 CV Performance Test Record Performance Test Record for Agilent E3633A and E3634ACC Performance Test Record Performance Test Record for Agilent E3633A and E3634A See the procedure on page Chapter 3 Calibration Procedures Calibration Security CodeCalibration Security Code SECURED To Unsecure the Power Supply for Calibration000000 CODE 003633 CODE E3633A 003634 CODE E3634A UNSECURED To Unsecure the Power Supply Without the Security Code Calibration Count Chapter 3 Calibration Procedures Calibration CountCalibration Message CALSECSTAT OFFON,code General Calibration/Adjustment Procedure Front Panel Voltage and Current Calibration CAL SETUP30 LEFT V LO 0.5000 V MI 10.000 V E3633A V LO 0.4500V MI 10.001 V HI 19.500 V E3633A 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 LO 0.499 A I LO 0.500 A E3633AI MI 10.000 A E3633A I MI 9.999 A I HI 19.499 A I HI 19.500 A E3633AIf 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 CAL MODE Aborting a Calibration in Progress Calibration Record for Agilent E3633A/E3634A Calibration Record for Agilent E3633A/E3634A Chapter 3 Calibration Procedures Error Messages Error MessagesSystem Error Messages Self-Test 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 Front Panel Earth-Referenced LogicChapter 4 Theory of Operation Earth-Referenced Logic Service Service Is the Power Supply Inoperative? Operating ChecklistDoes the Power Supply Fail Self-Test? Standard Repair Service worldwide Types of Service AvailableExpress Exchange U.S.A. only Repacking for Shipment Chapter 5 Service Repacking for ShipmentAgilent Technologies recommends that you always insure shipments To Replace the Power-Line Fuse Electrostatic Discharge ESD PrecautionsChapter 5 Service Electrostatic Discharge ESD Precautions Surface Mount Repair Installation Procedure To Disconnect the Output Using an External Relay Unit Reports Errors 740 to Troubleshooting HintsUnit is Inoperative Unit Fails Self-Test Bias Supplies Problems Power-On Self-Test Self-Test ProceduresComplete Self-Test ±10% tolerance Chapter 5 Service Self-Test Procedures 106 Replaceable Parts To Order Replaceable Parts Replaceable PartsBackdating and Part Changes E3633/E3634-60002 Main PC Assembly E3633/E3634-60002 Main PC AssemblyChapter 6 Replaceable Parts 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 E3633A/E3634A Power Supply Assembly E3633-60011 Front Frame AssemblyE3633-60011 Front Frame 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