Model 3438A
Table of Contents
TABLE OF CONTENTS
Section
I
.
GENERAL INFORMATION
....
...........
1.1
.
Introduction
1.3
.
Description
...........
..........
.
1.7 Specifications
1.9
.
Instrument and Manual
Identification
........
1-1 1
.
Options
..............
1
.
14
.
Accessories
...........
1.16
.
Safety Considerations
.....
Page
..........
1-1
..........
1-1
..........
1-1
..........
1-1
Section Page
I1
.
INSTALLATION
.....................
2-1
2.1
.
Introduction
.....................
2-1
2.3
.
Initial Inspection
..................
2-1
2.5
.
Power Requirements
...............
2-1
2.7
.
Environmental Requirements
..........
2-1
2.9
.
Instrument Mounting
...............
2-1
2-1 1
.
Hewlett-Packard Interface
Bus (HP-IB)
...................
2-1
2-1 3
.
Interface Cable Length
.............
2-1
2-1 5
.
Repackaging for Shipment
...........
2-1
2.19
.
Power Cords and Receptacles
..........
2-2
Section Page
111
.
OPERATING INSTRUCTIONS
............
3-1
3.1
.
Introduction
.....................
3-1
3.3
.
AC Operation
....................
3-1
3.5
.
Overload/Overrange/Improper
Function Indication
..............
3-1
Section Page
111
.
OPERATING INSTRUCTIONS
............
3-1
3.1
.
Introduction
.....................
3-1
...................
.
3.3 AC Operation 3-1
3.5
.
Overload/Overrange/Improper
Function Indication
..............
3-1
3.8
.
Auto
........................
3-1
3-1 1
.
Input Terminals
.................
3-1
3-1 6
.
DC Voltage Measurements
(Front or Rear
Input Terminals)
.....
3-3
3-1
8
.
AC Voltage Measurements
(Front or Rear Input Terminals)
.....
3-3
3.20
.
DC Current Measurements
..........
3-4
3.22
.
AC Current Measurements
..........
3-4
3.24
.
Resistance Measurements
.....
(Front or Rear Input Terminals) 3-5
3.26
.
HP-IB Applications
................
3-5
3.28
.
Data Output Format
..............
3-5
3.32
.
Talk Only Mode
.................
3-5
3.39
.
Addressable to Talk Mode
..........
3-6
3.43
.
-hp- 981 5A Sa~nple Application
.......
3-7
3.44
.
-hp- 9825 Sample Application
........
3-7
3.45
.
-11p- 9830 Sample Application
........
3-7
3.46
.
Option Decal
...................
3-7
348
.
Amps Input Fuse Replacement
.......
3-7
3.50
.
Multinreter Cleaning
..............
3-7
Section Page
.
................
IV PERFORMANCE TESTS 4-1
.
.....................
4.1 Introduction 4-1
........... .
4.3 Test Equipment Required 4-1
................. .
4.5 Performance Tests 4-1
.
........
4.8 DC Voltmeter Accuracy Test 4-1
.
........
4-1
0
AC Voltmeter Accuracy Test 4-1
.........
.
4-1 2 DC Ammeter Accuracy Test 4-2
.........
.
4.14 AC Ammeter Accuracy Test 4-3
4-1 6
.
Ohmmeter Accuracy Test
...........
4-3
4.18
.
AC Normal-Mode Rejection Test
......
4-5
4-2 1
.
AC Common Mode Rejection
Ratio
.
CMRR
.................
4-5
Section Page
V
.
ADJUSTMENT PROCEDURES
............
5-1
5.1
.
Introduction
.....................
5-1
...............
.
5.3 Equipment Required 5-1
................
.
5.5 Adjustment Interval 5-1
...........
.
5.7 Pre-Adjustment Procedures 5-1
5.9
.
Test Point and
Adjustment Locations
............
5-1
5-1
1
.
Adjustment Procedure
..............
5-1
5.13
.
A +7 V Power Supply
..............
Adjustment (R417) 5-2
5.14
.
B U725 Back Gate
Bias Adjustment
(R603)
...........
5-2
5-1 5
.
Clock Frequency
Adjustment (R9)
................
5-2
5.16
.
AC Zero Adjustment (R203)
....
5-2
5.17
.
20 Ohms Zero
Adjustment
(R111)
..............
5-2
5.18
.
DC Gain Adjustment (R403)
....
5-2
5.19
.
Ohms Gain Adjustment (R119)
...
5-3
5.20
.
AC Gain Adjustment (R123)
....
5-3
5.21
.
20 V Range, 20 kHz
Adjustment
(R102)
..............
5-3
5.22
.
2 V Range, 20 kHz
..............
Adjustment (R110) 5-3
5.23
.
20 V ac Range, 100 kHz
Adjustment
(C109)
..............
5-3
5.24
.
Power Requirement
Modification Instructions
..........
5-4
Section Page
V1
.
REPLACEABLE PARTS
................
6-1
6.1
.
Introduction
.....................
6-1
...............
.
64 Ordering Information 6-1
..................
.
6.6
Non-Listed Parts 6-1
.
....................
6.8 Parts Changes 6-1
..................
.
6.10 Proprietary Parts 6-1
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