HP 4262A User Manual

264 pages

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Model

4262A

)

Figure

8-3

Measurement

Principles

SEE

INSIOE

Table of Contents8
Introduction14
Model 4262A and Accessories14
Offset Adjustment15
Specifications20
Safety Considerations20
General Information20
Serial Number Plate20
Accessories Supplied21
General Component22
Introduction24
Initial Inspection24
Lcr24
Power Cable24
Voltage and Fuse25
Installation Instructions26
Installation of Options 907, 908 and 90926
Environment26
Rack Mount Kit28
Coupling Option 004 Comparator29
Option 101 HP-IB Remote Control and Data Output Installation29
Option Components31
Switch Setting32
Front Panel Features33
Offset Adjustment41
Measurement Error42
Relationship of Dissipation to Series and Parallel Resistance44
Unusual Operating Indications54
Option Operation58
Option 001: BCD Parallel Data58
Output58
Alternate Output of LCR and58
Assignment58
Output Timing58
Option 004-COMPARATOR62
Front Panel Features63
HP-IB Interface Capabilities63
Functions Relate64
Service Request64
Remote Program Codes65
Remote Message Coding66
Remote Message Coding67
Equipment Required68
Testrecord68
Calibration Cycle68
Accuracy Checks68
Preliminary Qperations69
Calibration of Dut's72
Capacitance Accuracy Test75
Test Signal Level78
Resistance/Esr Accuracy Test79
Inductance Accuracy Test84
Inductance Accuracy Test Setup84
Internal DC Bias Source Test86
Internal DC Bias Source86
Offset Adjustment Test87
Specifications87
Offset Adjustment Test Setup87
HP-IB Interface Test Setup92
Test98
Vadjustment106
Introduction106
Safety Requirements106
Equipment Required106
Factory Selected Components106
Adjustment Relationships106
Adjustment Locations106
Adjustable Components107
Factory Selected Components108
DUT Adjustment Recommendations109
Initial Operating Procedure110
DC Power Supply Adjustment111
Adjustment111
Nanoprocessor Operating Power112
Waveform at A13TP2116
Waveform at A13TP3117
Zero Detector & APAO120
10Khz Measurement Accuracy122
C Zero ADJ Circuit Adjustment127
Adjustment127
Replaceable Parts129
Abbreviations129
Replaceable Parts List129
Introduction129
List of Reference Designators129
Replaceable Parts139
Major Mechanical Parts - Exploded View151
Mechanical Parts - Exploded View152
Manual Changes154
Introduction154
Summary of Changes by Assembly154
Theory of Operation168
Troubleshooting168
Recommended Test Equipment168
Repair168
Basic Theory169
Front Panel Features169
Principles of Operation171
Block Diagram Discussion176
Analog Section Discussion176
Digital Control Section178
A23 Processor and ROM178
A21 Keyboard Control180
A22 Display Control180
A2 Display and Keyboard181
Timing Diagram Discussion183
Options185
Comparator185
Option 004 Comparator187
Option 101 HP-IB187
Compatible (A25)187
Troubleshooting189
Repair189
Symptoms Likely to Mislead191
Front Panel Isolation Procedure193
Removal199
Protective Diode Replacement200
ZERO ADJ Control Potentiometer (R4 and R5) Replacement200
Rear Panel217

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HP 4262A Specifications

General

Brand	HP
Model	4262A
Category	Measuring Instruments
Language	English

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