Agilent Technologies 6541A Service Manual

5
Table of Contents
Introduction ............................................................................................................................................................................ 7
Scope .................................................................................................................................................................................. 7
Conventions Used In Text................................................................................................................................................... 7
Manual Revisions................................................................................................................................................................ 8
Safety Considerations ......................................................................................................................................................... 8
Firmware Revisions ............................................................................................................................................................ 8
Electrostatic Discharge ....................................................................................................................................................... 8
Verification.............................................................................................................................................................................. 9
Introduction......................................................................................................................................................................... 9
Test Equipment Required.................................................................................................................................................... 9
Measurement Techniques.................................................................................................................................................. 11
Setup for Most Tests...................................................................................................................................................... 11
Electronic Load.............................................................................................................................................................. 11
Current-Monitoring Resistor.......................................................................................................................................... 11
Operation Verification Tests............................................................................................................................................. 11
Performance Tests............................................................................................................................................................. 11
Programming.................................................................................................................................................................. 13
Constant Voltage (CV) Tests......................................................................................................................................... 13
CV Setup..................................................................................................................................................................... 13
Voltage Programming and Readback Accuracy.......................................................................................................... 13
CV Load Effect........................................................................................................................................................... 14
CV Source Effect ........................................................................................................................................................ 14
CV Noise (PARD)....................................................................................................................................................... 14
Transient Recovery Time............................................................................................................................................ 15
Constant Current (CC) Tests.......................................................................................................................................... 15
CC Setup..................................................................................................................................................................... 15
Current Programming and Readback Accuracy .......................................................................................................... 15
Current Sink (CC-) Operation. .................................................................................................................................... 16
CC Load and Line Regulation..................................................................................................................................... 16
CC Load Effect ........................................................................................................................................................... 16
CC Source Effect......................................................................................................................................................... 17
CC Noise (PARD)....................................................................................................................................................... 17
Troubleshooting.................................................................................................................................................................... 31
Introduction....................................................................................................................................................................... 31
Test Equipment Required.................................................................................................................................................. 31
Overall Troubleshooting................................................................................................................................................... 34
Power-On Self-Test........................................................................................................................................................... 34
Signature Analysis ............................................................................................................................................................ 35
Firmware Revisions (for Models 664xA & 665xA)....................................................................................................... 41
Test Headers .................................................................................................................................................................. 41
Troubleshooting Procedures ............................................................................................................................................. 49
Flow Charts.................................................................................................................................................................... 49
Bias and Reference Supplies.......................................................................................................................................... 49
CV/CC Status Annunciators Troubleshooting................................................................................................................ 49
Post Repair Calibration..................................................................................................................................................... 49
Inhibit Calibration Jumper ............................................................................................................................................. 49
Calibration Password ..................................................................................................................................................... 50
EEPROM Initialization..................................................................................................................................................... 66
Transferring Calibration Constants Into Factory Preset Locations ................................................................................... 66

Agilent Technologies 6541A Specifications

General

Brand	Agilent Technologies
Model	6541A
Category	Power Supply
Language	English