User's Manual

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VHF Headstation & In-Line Amplifiers

User Handbook

Handbook Nō.-50-127201FCC Issue No:-A

Date:-14/06/2005

Page:-

2 of 45

Table of Contents

AMENDMENT LIST RECORD SHEET ...................................................................................................4

INTRODUCTION.........................................................................................................................................5

Scope ........................................................................................................................................................................... 5

Purpose ....................................................................................................................................................................... 5

Glossary of Terms...................................................................................................................................................... 6

Key to AFL RF Module Drawing Symbols ............................................................................................................. 7

1. SAFETY CONSIDERATIONS.........................................................................................................8

1.1 Earthing of Equipment ................................................................................................................................ 8

1.2 Electric Shock Hazard.................................................................................................................................. 8

1.3 RF Radiation Hazard ................................................................................................................................... 9

1.4 Chemical Hazard ........................................................................................................................................ 10

1.5 Emergency Contact Numbers.................................................................................................................... 10

2. OVERVIEW/SYSTEM DESCRIPTION .......................................................................................11

3. VHF AMPLIFIERS .........................................................................................................................12

3.1 VHF Headstation Bi-Directional Amplifier ............................................................................................. 12

3.1.1 VHF Headstation Bi-Directional Amplifier Description.......................................................................... 12

3.1.2 VHF Headstation Bi-Directional Amplifier Electrical Specifications...................................................... 12

3.1.3 VHF Headstation Bi-Directional Amplifier Mechanical Specifications................................................... 13

3.1.4 VHF Headstation Bi-Directional Amplifier System Diagram .................................................................. 14

3.1.5 VHF Headstation Bi-Directional Amplifier Parts List .............................................................................15

3.2 VHF In-Line Amplifier Description.......................................................................................................... 17

3.2.1 VHF In-Line Amplifier Electrical Specifications...................................................................................... 17

3.2.2 VHF In-Line Amplifier Mechanical Specifications................................................................................... 18

3.2.3 VHF In-Line Amplifier System Diagram .................................................................................................. 19

3.2.4 VHF In-Line Amplifier Parts List ............................................................................................................. 20

4. SUB-UNIT MODULES....................................................................................................................22

4.1 Bandpass Filter (01-002503) ...................................................................................................................... 22

4.1.1 Description ............................................................................................................................................... 22

4.1.2 Technical Specification............................................................................................................................. 22

4.2 VHF 30dB Coupler (07-000108)................................................................................................................ 23

4.2.1 Description ............................................................................................................................................... 23

4.2.2 Technical Specification............................................................................................................................. 23

4.3 ¼Watt 0- -30dB Switched Attenuator (10-000701)..................................................................................24

4.3.1 Switched Attenuators ................................................................................................................................ 24

4.3.2 Remote Attenuators (10-001201).............................................................................................................. 24

4.4 VHF/UHF Low Noise Amplifier (11-006002)........................................................................................... 25

4.4.1 Description ............................................................................................................................................... 25

4.4.2 Technical Specification............................................................................................................................. 25

4.4.3 LNA ‘D’ Connector Pin-out details.......................................................................................................... 25

4.5 10Watt Power Amplifier (12-002001) ....................................................................................................... 26

4.5.1 Description ............................................................................................................................................... 26

4.5.2 Technical Specification............................................................................................................................. 26

4.6 3 Stage Amplifier Alarm Board (12-002201)............................................................................................ 27

4.6.1 Description ............................................................................................................................................... 27

4.6.2 Technical Specification............................................................................................................................. 28

4.7 Single DC/DC Converter (13-001710)....................................................................................................... 29

4.7.2 Technical Specification............................................................................................................................. 29

4.8 Automatic Gain Control (17-001101, det. & 17-001201, atten.)............................................................. 30

4.8.1 Description ............................................................................................................................................... 30

4.8.2 Technical Specification............................................................................................................................. 31

4.9 Controller/Monitor Board (17-006801) .................................................................................................... 32