Theory of Operation | Agilent Technologies E3633A, E3634A guide

Theory of Operation

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Theory of Operation

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Agilent Technologies E3633A, E3634A manual Theory of Operation

Contents

3DUW1XPEHU $SULO RUDUUDQW\LQIRUPDWLRQUHIHUWRWKHEDFNRIWKHPDQXDO ‹&RS\ULJKW$JLOHQW7HFKQRORJLHV,QF $OO5LJKWV5HVHUYHGService Guide $JLOHQW$DQG$ &3RZHU6XSSOLHV Convenient bench-top features Flexible system 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 The Rear Panel at a Glance Use the front-panel I/OConfig key to In This Book Page Contents Contents Contents Chapter 3 Calibration Procedures Continued Chapter 4 Theory of Operation Contents Chapter 5 Service Chapter 7 Backdating Chapter 8 SchematicsChapter 6 Replaceable Parts Contents Specifications Specifications Performance Specifications Chapter 1 SpecificationsPerformance Specifications Table 1-1. Performance Specifications Chapter 1 Specifications Performance Specifications Supplemental Characteristics Chapter 1 Specifications 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 Quick Start Local To Prepare the Power Supply for Use Chapter 2 Quick Start 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 To Check the Rated Voltages of the Power Supply Chapter 2 Quick Start To Check the Rated Voltages of the Power Supply1 Turn on the power supply 2 Enable the outputs To Check the Rated Currents of the Power Supply Output On/Off Display Limit Voltage Current page 123 in chapter 5 of the User’s Guide To Use the Power Supply in Constant Voltage Mode Current Display Limit Output On/Off 1 Voltage To Use the Power Supply in Constant Current Mode Display Limit 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 1 Set up the power supply for the desired operating state To Store and Recall the Instrument StateSTORE Chapter 2 Quick Start To Store and Recall the Instrument State DONE RECALLMemory location “1” will be displayed in the recall mode Setting the OVP Level and Enable the OVP Circuit To Program Overvoltage ProtectionLEVEL 22.0V E3633A LEVEL 55.0V E3634A OVP ON Checking OVP Operation Clearing the Overvoltage ConditionCHANGED OVP CLEAR Adjust OVP trip level Setting the OCP Level and Enable the OCP Circuit To Program Overcurrent ProtectionLEVEL 22.0 A E3633A LEVEL 7.5 A E3634A OCP ON Checking OCP Operation Clearing the Overcurrent ConditionOCP 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 Agilent Technologies Calibration Services Calibration Interval Automating Calibration Procedures Chapter 3 Calibration Procedures Automating Calibration ProceduresTest Considerations C a u t i o n Chapter 3 Calibration Procedures Recommended Test Equipment Recommended Test EquipmentTable 3-1. Recommended Test Equipment Performance Verification Tests Self-TestPerformance Verification Tests Setup for Most Tests Measurement TechniquesElectronic Load General Measurement Techniques Current-Monitoring ResistorProgramming Constant Voltage Test Setup Constant Voltage CV VerificationsVoltage 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 Test Setup Constant Current CC VerificationsCurrent Programming and Readback Accuracy CC Load Effect Load Regulation CC Source Effect Line Regulation CC PARD Ripple and Noise Chapter 3 Calibration Procedures Common Mode Current Noise Common Mode Current Noise Performance Test Record for Agilent E3633A and E3634A CV Performance Test RecordCC Performance Test Record Performance Test Record for Agilent E3633A and E3634A Chapter 3 Calibration Procedures Calibration Security Code See the procedure on pageCalibration Security Code To Unsecure the Power Supply for Calibration SECURED000000 CODE 003633 CODE E3633A 003634 CODE E3634A To Unsecure the Power Supply Without the Security Code UNSECURED Chapter 3 Calibration Procedures Calibration Count Calibration CountCalibration Message CALSECSTAT OFFON,code General Calibration/Adjustment Procedure CAL SETUP Front Panel Voltage and Current Calibration30 LEFT V LO 0.5000 V LO 0.4500 V MI 10.000 V E3633AV MI 10.001 V HI 19.500 V E3633A V HI 19.495 For example, if the DVM reads 19.495 V, adjust the voltage to 19.495 V using the knob and arrow keys I LO 0.500 A E3633A I LO 0.499 AI MI 10.000 A E3633A I MI 9.999 A I HI 19.500 A E3633A I HI 19.499 AIf 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 Aborting a Calibration in Progress CAL MODE Calibration Record for Agilent E3633A/E3634A Calibration Record for Agilent E3633A/E3634A Error Messages Chapter 3 Calibration Procedures 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 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 Chapter 3 Calibration Procedures End of Program Declaration for Windows 95/NT Theory of Operation Block Diagram Overview, starting on page Block Diagram Overview Chapter 4 Theory of Operation Block Diagram Overview Block Diagram AC Input and Bias Supplies Chapter 4 Theory of Operation AC Input and Bias Supplies Floating Logic Chapter 4 Theory of Operation Floating Logic U20 Internal Signal D-to-A Converter Chapter 4 Theory of Operation D-to-A Converter A-to-D Converter Chapter 4 Theory of Operation A-to-D Converter Power Mesh and Control Chapter 4 Theory of Operation 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 Earth-Referenced Logic Front PanelChapter 4 Theory of Operation Earth-Referenced Logic Service Service Operating Checklist Is the Power Supply Inoperative?Does the Power Supply Fail Self-Test? Types of Service Available Standard Repair Service worldwideExpress Exchange U.S.A. only Chapter 5 Service Repacking for Shipment Repacking for ShipmentAgilent Technologies recommends that you always insure shipments Electrostatic Discharge ESD Precautions To Replace the Power-Line FuseChapter 5 Service Electrostatic Discharge ESD Precautions Surface Mount Repair To Disconnect the Output Using an External Relay Installation Procedure Troubleshooting Hints Unit Reports Errors 740 toUnit is Inoperative Unit Fails Self-Test Bias Supplies Problems Self-Test Procedures Power-On Self-TestComplete Self-Test ±10% tolerance Chapter 5 Service Self-Test Procedures 106 Replaceable Parts Replaceable Parts To Order Replaceable PartsBackdating and Part Changes E3633/E3634-60002 Main PC Assembly E3633/E3634-60002 Main PC AssemblyChapter 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 E3633/E3634-60002 Main PC Assembly Designator E3633/E3634-60002 Main PC Assembly 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 E3633A/E3634A Power Supply 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