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Measuring Instruments
4328A
HP 4328A Service Manual
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Model
4328A
Reference
Designation
A1
AlC1-
A1C300
A1C301
A1C302
A1C303
A1C304
A1CR1-
A1CR300
A1CR301
A1CR302
A1CR303
A1CR304
A1CR305
A1CR306
A1CR307
A1CR308
A1CR309
A1CR310
AlQl-
AlQ300
A1Q301
A1Q302
A1Q303
A1Q304
A1Q305
A1Q306
A1R1-
A1R300
AlR301
A1R302
AlR303
AlR304
A1R305
A1R306
A1R307
AlR308
A1R309
Table
6-2,
Reference
Designation
Index
Stock
No.
Description
04304-7043
POWER
SUPPLY
ASS'Y
AC
POWER
OPERATION
ONLY
04304-8704
BOARD:
BLANK
P.
C.
NOT
ASSIGNED
0180-0967
C:
FXD
ALUM
470f.LF
25VDCW
0180-0756
C:
FXD
ALUM
22f.LF
16VDCW
0180-0967
C:
FXD
ALUM
470f.LF
25VDCW
0180-0756
C:
FXD
ALUM
22p.F
16VDCW
NOT
ASSIGNED
1901-0230
SEMICON
DEVICE:
DIODE
SILICON
1S1625
600V
350mA
1901-0230
SEMICON
DE
VICE,
DIODE
SILICON
1S1625
600V
350mA
1901-0230
SEMICON
DE
VICE,
DIODE
SILICON
1S1625
600V
350mA
1901-0230
SEMICON
DEVICE,
DIODE
SILICON
1S1625
600V
350mA
1902-0049
SEMICON
DEVICE·
DIODE
BREAKDOWN
6.
19V
400mW
1901-0230
SEMICON
DEVICE·
DIODE
SILICON
1S1625
600V
350mA
1901-0230
SEMICON
DEVICE·
DIODE
SILICON
1S1625
600V
350mA
1901-0230
SEMICON
DEVICE-
DIODE
SILICON
181625
600V
350mA
1901-0230
8EMICON
DEVICE·
DIODE
SILICON
181625
600V
350mA
1902-0049
SEMICON
DEVICE·
DIODE
BREAKDOWN
6.
19V
400mW
NOT
ASSIGNED
1854-0854
TRANSISTOR·
NPN
SILICON
1854-0003
TRANSISTOR
NPN
SILICON
SIMILAR
TO
2N1711
1854-0854
TRANSISTOR:
NPN
SILICON
1854-0854
TRANSISTOR
NPN
SILICON
1854-0003
TRANSISTOR:
NPN
SILICON
SIMILAR
TO
2Nl
711
1854-0854
TRANSISTOR:
NPN
SILICON
NOT
ASSIGNED
0683-1245
R:
FXD
COMP
120kfl
500
1/4W
0683-3925
R:
FXD
COMP
3.
9kfl
500
1/4W
0683-5635
R::
FXD
COMP
56kfl
500
1/4W
0683-5635
R::
FXD
COMP
56kfl
5%
1,'4W
0683-1245
R::
FXD
COMP
120kfl
5%
1/4W
0683-3925
R:
FXD
COMP
3.
9kr.l
5%
1/4W
0683-5635
R:
FXD
COMP
56kfo
5%
1/4W
0683-5635
R:
FXD
COMP
56kfl
500
1/4W
0683-3335
R:
FXD
COMP
33kr.l
5"b
1/4W
MISCELLANEOUS
5040-3304
HOLDER:
CAPACITOR
2
REQ'D
See
list
of
abbreviations
m
introduction
to
th1s
section
Section
VI
Table
6-2
Note
6-3
42
44
Table of Contents
Table of Contents
10
General Information
12
Description
12
Accessories Furnished
12
Instrument Identification
13
Manual Changes
13
Installation
14
Introduction
14
Unpacking and Inspection
14
Environment
14
Combining Case
14
Adapter Frame
14
Power Connection
14
Line Voltage
14
Power Cable
14
Operation
15
Introduction
15
Battery Operation
15
Instrument Temperature Range
15
Measurement
15
Operating Procedure
15
Measuring Voltage on Samples
15
Front Panel Controls and Connectors
16
Rear Panel Controls and Connectors
17
Operating Procedure
18
Samples
19
DC Bias Superimposed
19
Recorder Output
19
Probe Connection
19
General
19
On Samples and Maximum Power
19
Probe Installation
20
16005A Clip-Type Probe
20
16006A Pin-Type Probe
20
16007A B Test Leads
20
Notes on Operation
20
In Using the 1 and 3M Ohm
20
Positive Contact
20
16005A Clip-Type Probes
20
16006A Pin-Type Probes
20
Changing Test Lead Length
21
4-Terminal Device Measurement
21
Theory of Operation
22
Introduction
22
Simplified Functional Description
22
20Mv Peak Limiter
23
Phase Sensitive Voltmeter
23
Operation of Phase Detector
23
Model 4328A Oscillator Talking Schematic
26
Model 4328A Phase-Sensitive
28
Model 4328A Power Supply Talking Schematic
30
Talking Schematic
32
Maintenance
33
Contents
33
Performance Checks
33
Adjustments
33
Test Equipment
33
Maintenance
34
4328A Performance Checks
34
Mechamcal Meter Zero
34
Linearity Check
34
Full Scale Check
34
Cover Removal and Replacement
34
Top Cover Removal
34
Top Cover Replacement
34
Linearity Test
34
Bottom Cover Removal
35
Bottom Cover Replacement
35
Adjustment Procedures
35
Mechanical Meter Adjustment
35
DC Power Supply Check
35
Bias Adjustment
35
T302 Adjustment
35
Oscillator Output Adjustment
35
Electrical Zero Adjustment
35
Power Supply Test
35
Full Scale Adjustment
36
Recorder Output Adjustment
36
Reactance Component Offset Adjustment
36
Transistor Biasing Characteristlcs
36
Isolating Trouble in Transistor Circuits
37
General
37
In Circuit Testing
37
Out-Of-Circuit Testing
37
Component Replacement M Etched Circuits
37
Axial-Lead Components
37
Other Components
37
Out-Of-Circuit Transistor Resistance
38
Resistance Measurements
38
Etched Circuit Soldering Equipment
39
Impedance
39
Replaceable Parts
41
Introduction
41
Reference Designation Index
42
Manual Changes and Options
53
Options
53
Manual Changes
53
Later Instruments
53
Earlier Instruments
53
Partial Schematic of A2 Ass'y
54
Diagrams
61
Introduction
61
Troubleshooting
61
Schematics
61
Schematic Diagram Notes
62
Overall Block Diagram
67
Model 4328A Waveforms
68
4328A Overall Troubleshootmg
70
Model 4328A Left Internal View
74
Schmitt Trigger P,'O A3 Troubleshooting
76
Flip-Flop P/0 A3 Troubleshooting
81
Troubleshooting
85
Model 4328A Right Internal View
86
Model 4328A Top Lnternal View
86
AC Amplifier P/0 A2
87
Phase Detector and DC Amplifier P/0 A2 Troubleshooting
87
Model 4328A Power Supply PC Board
92
Power Supply Troubleshooting
93
Model 4328A Ni-CD Power Supply PC Board
98
Ni-CD Power Supply Troubleshooting
100
Oscillator Assembly A3 Component Locations
103
Range Switch Assembly A4
103
Component Locations
109
A2 Component Locations
109
Mother Board Assembly A5
109
Phase Sensitive Amplifier Assembly
109
Power Supply Assembly al
115
Ni-CD Power Supply Assembly A6 Component Locations
121
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HP 4328A Specifications
General
Brand
HP
Model
4328A
Category
Measuring Instruments
Language
English
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