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4262A
HP 4262A User Manual
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CHANGE
1
»
Page
1-10,
Table
1-4:
Change
the
recommended
oscilloscope
to
the
HP
1740A.
Table
6-3:
Change
the
table
as
shown
below:
Reference
HP
Part
Description
Designation
Number
A14
Q4
1855-0570
TRANSISTOR
J-FET
N-CHAN
SI
RS
(ZERO
ADJ
L)
2100-4086
RESISTOR-VAR
500
10%
66
04262-24004
NUT-HEX-DBL-CHAM
1/4-32-THD
68
2190-0016
WASHER-LK
INTL
T
NO.-3/8
Page
6-25:
Add
a
washer
(reference
designation
(&)
to
the
illustration,
as
shown
below:
5
7
Table of Contents
Table of Contents
8
Introduction
14
Model 4262A and Accessories
14
Offset Adjustment
15
Specifications
20
Safety Considerations
20
General Information
20
Serial Number Plate
20
Accessories Supplied
21
General Component
22
Introduction
24
Initial Inspection
24
Lcr
24
Power Cable
24
Voltage and Fuse
25
Installation Instructions
26
Installation of Options 907, 908 and 909
26
Environment
26
Rack Mount Kit
28
Coupling Option 004 Comparator
29
Option 101 HP-IB Remote Control and Data Output Installation
29
Option Components
31
Switch Setting
32
Front Panel Features
33
Offset Adjustment
41
Measurement Error
42
Relationship of Dissipation to Series and Parallel Resistance
44
Unusual Operating Indications
54
Option Operation
58
Option 001: BCD Parallel Data
58
Output
58
Alternate Output of LCR and
58
Assignment
58
Output Timing
58
Option 004-COMPARATOR
62
Front Panel Features
63
HP-IB Interface Capabilities
63
Functions Relate
64
Service Request
64
Remote Program Codes
65
Remote Message Coding
66
Remote Message Coding
67
Equipment Required
68
Testrecord
68
Calibration Cycle
68
Accuracy Checks
68
Preliminary Qperations
69
Calibration of Dut's
72
Capacitance Accuracy Test
75
Test Signal Level
78
Resistance/Esr Accuracy Test
79
Inductance Accuracy Test
84
Inductance Accuracy Test Setup
84
Internal DC Bias Source Test
86
Internal DC Bias Source
86
Offset Adjustment Test
87
Specifications
87
Offset Adjustment Test Setup
87
HP-IB Interface Test Setup
92
Test
98
Vadjustment
106
Introduction
106
Safety Requirements
106
Equipment Required
106
Factory Selected Components
106
Adjustment Relationships
106
Adjustment Locations
106
Adjustable Components
107
Factory Selected Components
108
DUT Adjustment Recommendations
109
Initial Operating Procedure
110
DC Power Supply Adjustment
111
Adjustment
111
Nanoprocessor Operating Power
112
Waveform at A13TP2
116
Waveform at A13TP3
117
Zero Detector & APAO
120
10Khz Measurement Accuracy
122
C Zero ADJ Circuit Adjustment
127
Adjustment
127
Replaceable Parts
129
Abbreviations
129
Replaceable Parts List
129
Introduction
129
List of Reference Designators
129
Replaceable Parts
139
Major Mechanical Parts - Exploded View
151
Mechanical Parts - Exploded View
152
Manual Changes
154
Introduction
154
Summary of Changes by Assembly
154
Theory of Operation
168
Troubleshooting
168
Recommended Test Equipment
168
Repair
168
Basic Theory
169
Front Panel Features
169
Principles of Operation
171
Block Diagram Discussion
176
Analog Section Discussion
176
Digital Control Section
178
A23 Processor and ROM
178
A21 Keyboard Control
180
A22 Display Control
180
A2 Display and Keyboard
181
Timing Diagram Discussion
183
Options
185
Comparator
185
Option 004 Comparator
187
Option 101 HP-IB
187
Compatible (A25)
187
Troubleshooting
189
Repair
189
Symptoms Likely to Mislead
191
Front Panel Isolation Procedure
193
Removal
199
Protective Diode Replacement
200
ZERO ADJ Control Potentiometer (R4 and R5) Replacement
200
Rear Panel
217
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HP 4262A Specifications
General
Brand
HP
Model
4262A
Category
Measuring Instruments
Language
English
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