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Model
339A
Table of Contents
TABLE OF
CONTENTS
Section
Page
1.
General Information
1-1
1-1.
Introduction
1-1
1-4.
Specifications
1-1
1-6.
Instrument
and Manual
Identification
1-1
1-10.
Description
1-1
1-17.
Options
1-2
1-19.
Recommended
Test
Equipment
1-2
Section
Page
II.
Installation
2-1
2-1.
Introduction
2-1
2-3.
Initial
Inspection
2-1
2-5.
Preparation
For Use
2-1
2-6.
Power
Requirements
2-1
2-8.
Line Voltage Selection
2-1
2-10.
Power
Cable
2-1
2-12.
Grounding Requirements
2-1
2-14.
Bench Use
2-2
2-16.
Rack Mounting
2-2
2-18.
Environmental Requirements
.2-2
2-19.
Operating
and
Storage
Temperature
2-2
2-22.
Humidity
2-2
2-24.
Altitude
2-2
2-26.
Repackaging For Shipment
2-2
Section
Page
III.
Operation
3-1
3-1.
Introduction
3-1
3-3.
Operating
Characteristics
3-1
3-4.
General
3-1
3-11.
True
RMS
vs
Average
Responding
Detection
3-1
3-13.
Turn-On
and
Warm-Up
3-2
3-15.
Distortion
Measurement
3-2
3-16.
Distortion
Measurement
Using
the
339A
Internal Oscillator
3-2
3-18.
Distortion
Measurement
of
an
External
Source
3-3
3-20.
AM
Detector
3-3
3-22.
Voltmeter Operation
3-3
3-24.
Normal
Voltmeter Operation
3-3
3-26.
Relative Level
Operation
3-4
3-28.
Oscillator
Level
Operation
3-4
3-31.
VU
Measurements
3-4
3-33.
Filters
3-4
3-35.
Input
Ground
Select
3-4
3-37.
Monitor Output
3-5
Section
Page
III.
3-39.
Oscillator
Operation
3-5
3-40.
Frequency
Selection
3-5
3-42.
Output
Level
3-5
3-44.
Operational
Verification
Checks
3-5
3-46.
Preliminary Procedure
3-5
3-48.
Oscillator
3-5
3-50.
AC
Voltmeter
3-5
3-52.
Distortion
Analyzer
3-6
3-54.
Filters
3-6
3-56.
Operator's
Maintenance
3-7
3-57.
Fuse Replacement
3-7
3-
59.
Adjustment
of
Meter
Mechanical Zero
3-7
Section
Page
IV.
Performance
Test
4-1
4-
1.
Introduction
4-1
4-3.
Equipment
Required
4-1
4-5.
Test
Record
4-1
4-7.
Calibration Cycle
4-1
4-9.
Voltmeter Performance
Tests
4-1
4-11.
Full-Scale
Accuracy and
Frequency Response
Test
4-1
4-12.
Meter Tracking and Monitor
Output Accuracy
Test
4-2
4-13.
RMS
Accuracy
(crest
factor)
Test
4-4
4-14.
Filter
Accuracy
Test
4-4
4-15. Oscillator
Performance
Tests
4-5
4-16.
Output
Level
and
Flatness Test
4-5
4-17.
Output Impedance
Test
4-5
4-18.
Oscillator
Frequency Accuracy
Test
.
4-6
4-19.
Oscillator Total
Harmonic
Distortion Test
4-7
4-20.
Distortion
Analyzer
Performance
Tests
4-8
4-22.
Fundamental
Rejection
and
Induced
Distortion Test
4-8
4-24.
Distortion
Measurement
Accuracy
Test
4-10
4-25.
Residual Noise Test
4-11
4-
26.
Input
Impedance
Test
4-11
Section
Page
V.
Adjustments
5-1
5-
1.
Introduction
5-1
5-3.
Equipment
Required
5-1
5-5.
Adjustment
Locations
5-1
iii
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