Table Of Contents - HP 450A Operating And Servicing Manual

Model 450A
TAILE OF CONTENTS
Table of Contents
List of Illustrations
)
Section
Page Section Page
GENERAL INFORMATION 1-1 IV SERVICE INSTRUCTIONS
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4-1
1-1.
Description . . . . 1-1 4-1. Warnings and Cautions . . . . . . 4-1
1-5.
Applicable Literature
1-1
4-4.
Equipment Required for Maintenance 4-1
4-6. Troubleshooting
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4-2
4-8. Tube Replacement . . . .
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4-2
II OPERATING INSTRUCTIONS. 2-1
4-10. Locating Shorts in Power Circuits
4-2
2-1.
Incoming Inspection 2-1 4-12. Testing Power Supply Operation. 4-2
2-4. Installation
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2-1 4-15. Measuring Amplifier Stage Gain. 4-3
2-10.
Operating Procedure 2-2 4-17. Amplifier Adjustments. . . . . 4-3
4-19. Adjusting VI and V2 Heater Voltage 4-3
4-21. Adjusting Amplifier Gain
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4-3
III THEORY OF OPERATION
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3-1 4-23. Noise and Distortion Measurement
4-4
3-1.
Amplifier Circuit Operation . . 3-1
V
REPLACEABLE PARTS .
5-1
3-4.
Regulated Power Supply Operation 3-1 5-1. Introduction
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5-1
3-6. DC Heater Supply. . . . .
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3-1 5-3. Ordering Information 5-1
LIST OF ILLUSTRATIONS
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Number
Page Number Page
1-1.
Table of Specifications . 1-0 4-3. Top View of Model 450A . . 4-6
1-2.
Model 450A Amplifier 1-0
4-4. Bottom View of Model 450A 4-7
4-1.
Test Setup for Measuring Amplifier
4-5. Voltages and Resistances on Tube
Gain
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4-3
Sockets and Terminal Boards 4-8
4-2. Test Setup for Measuring Amplifier
Distortion and Noise . . . . . .
4-4 4-6.
Schematic Diagram Model 450A . . 4-9
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00001-1
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