HP 4328A Service Manual

Model 4328A
LLst of Tables
List of Illustration
LIST OF TABLES
Number
Title Page
1-1.
3-1.
3-2.
5-l.
5-2
5-3.
5-4.
5-5.
5-6.
5-7.
6-L
Specifications ...... , . 1-2
Characteristics of Applied Current
on Samples and Maximum Power
Dtssipation .............. ,. . . .. . . 3-5
Ma..ximum Values of Resistance and
Length of Lead Wire ....... , _ . .. . . 3-7
Recommended Test Equipment .... , ... 5-1
Linearity Test ............ , .. , ...... 5-2
Full Scale Test , .............. , ... , . 5-2
Power Supply Test .......... _. . . . _ .. 5-3
Out-of-Circuit Transistor Resistance
Measurements ........... , ......... 5-6
Safe Ohmmeter Range for Transistor
Resistance Measurements 5-6
Etched Circuit Soldering Equipment .. , 5-7
Ltst of Reference Designators and
Abbreviations ..... , ... , . . . , ........ 6-1
Number Title
6-2.
7-1.
8-1.
8-2.
8-3.
8-4.
8-5.
8-6.
8-7.
8-8.
8-9.
8-10.
Reference Designation Index ....... , ..
Backdating Changes .. , ..... , ..... .
4328A Overall Troubleshootmg .... .
Oscillator P/0 A3 Troubleshooting .
Schmitt Trigger P,'O A3
Troubleshooting , .......... _ .... , -
Flip-Flop P/0 A3 Troubleshooting .
Limitter P/0 A3 Troubleshooting . , ....
AC Amplifier P/0 A2
Troubleshooting .. , ........... .
Phase Detector and DC Amplifier
P /0 A2 Troubleshooting .
Modulator P iO A2 Troubleshooting
Power Supply Troubleshooting .... , .. ,
Ni-Cd Power Supply Troubleshooting ..
Page
6-2
7-1
8-5
8-7
8-7
8-9
8-9
8-11
8-11
8-11
8-13
8-15
LIST OF ILLUSTRATIONS
Number
Title
Page
1-1.
3-1.
3-2.
3-3.
3-4.
3-5.
3-6.
3-7.
3-8.
3-9.
4-1.
4-2.
4-3.
4-4.
4-5.
4-6.
4-7.
5-l.
5-2.
5-3.
7-1.
7-2.
8-1.
8-2.
8-3.
8-4.
8-5.
8-6.
Model 4328A Milhohmmeter . . . . . . . . . . 1-1
Front Panel Controls and Connectors . . 3-2
Rear Panel Controls and Connectors... 3-3
Operating Procedure . . . . . . . . . . . . . . . . 3-4
Probe Combmation ..... , . . . . . . . . . . . . 3-5
Probe Installation ...... ,. . . . . . . . . . . . . 3-6
16005A Clip-type Probes . . . . . . . . . . . . . 3-6
16006A Pin-type Probes ..•.... , ...... 3-6
16007A
1
B Test Leads ................ 3-6
4-Terminal Device Measurement.... . . 3-7
Basic Low Resistance Measurement ... 4-1
SimphfLed Block Diagram,....... . . . . . . 4-1
Operation of Phase Detector .... _ . . . . . 4-2
Model 4328A Oscillator Talking
Schematic .... , . . . . . . . . . . . . . . . . . . . 4-5
Model 4328A Phase-Sensitive
Amphher Talking Schematic . . . . . . . 4-7
Model 4328A Power Supply Talking
Schematic .... , _ ..... , ............ 4-9
Model 4328A Ni-Cd Power Supply .... .
Talking Schematic . . . . . . . . . . . . . . . . 4-11
Transistor Biasing CharacteristLcs ... , 5-4
(0. 9m.f2 + j 1. 8m0) Impedance ......... 5-7
(900 + J 180Q) Impedance .. , .......... 5-7
Partial Schematic of A2 Ass'y . . . . . . . . 7-1
Parhal Schematic of A3 Ass'y ........ 7-2
Schematic Diagram Notes... . . . . . . . . . . 8-2
Overall Block Diagram. . . . . . . . . . . . . . . 8-3
Model 4328A Waveforms . . . . . . . . . . . . . 8-4
Model 4328A Waveform Test Point
Locations . . . . . . . . . . . . . . . . . . . . . . . . 8-5
Model 4328A Left Internal VIew . . . . . . . 8-6
Model 4328A Bottom Internal V'lew . . . . 8-6
Number
Title
Page
8-7.
8-8.
8-9.
8-10.
8-11.
8-12.
8-13.
8-14.
8-15.
8-16.
8-17.
8-18.
8-19.
8-20.
8-21.
Model 4328A Rear Internal View ........ 8-8
Model 4328A Right Internal View ....... 8-10
Model 4328A Top lnternal View ....... 8-10
Model 4328A Power Supply PC Board ... 8-12
Model 4328A Ni-Cd Power Supply
PC Board ......................... 8-14
Oscillator Assembly A3 Component
Locations ........................ 8-16
Range Switch Assembly A4
Component Locations .............. 8-16
Oscillator Assembly A3 Schematic ..... 8-17
Range Switch Assembly A4 Schematic .. 8-17
Mother Board Assembly A5 Schemattc .. 8-17
Phase Sensittve Amplifier Assembly
A2 Component Locations .....•..•.. 8-18
Mother Board Assembly A5
Component Locations .............. 8-18
Phase Sensitive Amplifier Assembly
A2 Schematic ............ , ....... 8-19
Mother Board Assembly A5
Schematic ...•......•..........•.. 8-19
Power Supply Assembly Al .......... .
Component Locations .............. 8-20
Power Supply Assembly Al
Schematic ........................ 8-21
Mother Board Assembly A5
Schematic ........... , ............ 8-21
Ni-Cd Power Supply Assembly A6
Component Locations .............. 8-22
Mother Board Assembly A5
Schematic _ ......... _ ....... _ ..... 8-23
Ni-Cd Power Supply Assembly A5
Schematic . . . . . . ........... , ...... 8-23
iii

HP 4328A Specifications

General

Brand	HP
Model	4328A
Category	Measuring Instruments
Language	English