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6541A
Agilent Technologies 6541A Service Manual
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12 Verification
Figure 2-1. Basic Test
Setup
(
CV TESTS
)
(CV TESTS)
11
13
Table of Contents
Default Chapter
2
Exclusive Remedies
2
Limitation of Warranty
2
Printing History
4
Table of Contents
5
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
Disassembly Procedures
72
List of Required Tools
74
Top Cover, Removal & Replacement
74
A2 GPIB Board, Removal & Replacement (for 664Xa & 665Xa Models Only)
74
A2 Isolator Board, Removal & Replacement (for 654Xa & 655Xa Only)
75
Front Panel Assembly, Removal and Replacement
75
S1 Line Switch, Removal and Replacement
76
A3 Front Panel Board, Removal and Replacement
76
A1 Main Board
77
A4 Heatsink Assembly (500 Watt Models 6X5Xa Only)
77
A4A1 or A4A3 Left Tunnel Board, Removal and Replacement
78
A4A2 or A4A4 Right Tunnel Board
78
B1 Fan, Removal and Replacement
78
T1 Power Transformer, Removal and Replacement
78
Principles of Operation
81
Introduction
81
I/O Interface Signals
81
Overall Block Diagram (Figure 4-2)
83
Detailed Block Diagram Discussion
83
Secondary Interface Circuits (Figure 4-3)
83
Control Circuits
86
Output Power
86
Output Power and Control Circuits (Figure 4-4)
86
A3 Front Panel Board Circuits (Figure 4-5)
89
A2 GPIB Board Circuits for Agilent Models 664Xa and 665Xa Only
90
Isolator Board Circuits for Agilent Models 654Xa and 665Xa Only (Figure 4-7)
91
Replaceable Parts
95
Introduction
95
Chapter Organization
95
Model Applicability
95
How to Order Parts
95
Diagrams
137
Introduction
137
Interconnections
137
AC Input and Transformer Connections
137
Circuit Board Schematics
137
Component Location Diagrams
137
Test Points
139
Manual Backdating Changes
169
Index
173
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Agilent Technologies 6541A Specifications
General
Brand
Agilent Technologies
Model
6541A
Category
Power Supply
Language
English
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