User Manuals: HP 494A Traveling-Wave Amplifier

Manuals and User Guides for HP 494A Traveling-Wave Amplifier. We have 1 HP 494A Traveling-Wave Amplifier manual available for free PDF download: Operating And Service Manual

HP 494A Operating And Service Manual

HP 494A Operating And Service Manual (44 pages)

traveling-wave

Brand: HP | Category: Amplifier | Size: 2 MB

Table of Contents

Table of Contents
4
General Information
6
Description
6
Instrument Identification
7
Traveling Wave Tube Warranty
7
Installation
8
Mechanical Inspection
8
Power Requirements
8
Power Cable
8
- Repackaging for Shipment
  8
Operating Instructions
10
Introduction
10
Preliminary Operating Procedure
10
Helix Control
10
Saturation Power Output
10
- Bandwidth Considerations
  10
Constant Gain or Constant Output
12
- Amplification
  12
Buffer Amplifications
12
Amplitude Modulation
12
Pulse Modulation
15
Limited Phase Modulation
15
Unlimited Phase Modulation and Frequency Shifting
15
Homodyne Detection
16
- Frequency Modulation
  18
Principles of Operation
20
Introduction
20
Regulated Power Supply
20
- Traveling Wave Tube
  20
Grid Modulation
23
Helix Modulation
23
Constant-Amplitude, Linear Sawtooth Generator
24
Maintenance
26
Introduction
26
Cleaning the Air Filter
26
Test Equipment
26
Repair
28
Cabinet Removal
28
- Tube Replacement
  28
Traveling Wave Tube Capsule
28
- Replacement
  28
Adjustments
30
Excessive Helix Current
30
- Chassis Helix Control
  30
Anode Voltage Control
30
Regulated Power Supply
30
Troubleshooting
31
Performance Checks
32
Output Power Check
32
Noise Figure Check
32
Replaceable Parts
35
Introduction
35
Ordering Information
35

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