User Manual
Table Of Contents
- 1. INTRODUCTION
- Scope and Purpose of Document
- Limitation of Liability Notice
- 2. SAFETY CONSIDERATIONS
- 3. EQUIPMENT OVERVIEW
- 4. SUB-UNIT MODULES
- 4.1 Bandpass Filter (02-010201)
- 4.2 Two-Way Splitter (07-002503)
- 4.3 0.25Watt 0- -30dB Switched Attenuator (10-000703)
- 4.4 11-007302 & 11-007402 Low Noise Amplifiers
- 4.4.1 Description
- 4.4.2 Technical Specification (11-007302)
- 4.4.3 Technical Specification (11-007402)
- 4.4.4 LNA ‘D’ Connector Pin-out details
- 4.4.5 Drg. # 11-007302, LNA Assembly With Alarm Relay
- 4.4.6 Drg. # 11-007370, LNA RF Circuit Diagram
- 4.4.7 Drg. # 11-007371, LNA DC Wiring Diagram
- 4.4.8 Drg. # 11-003971, LNA DC Circuit Diagram
- 4.4.9 Drg. # 11-007402, LNA Assembly With Alarm Relay
- 4.4.10 Drg. # 11-007470, LNA RF Circuit Diagram
- 4.5 12-021601 5Watt Medium Power Tetra Amplifier
- 4.6 12-022101 10Watt Power Tetra Amplifier
- 4.7 8A Mains Filter Assembly (13-003301)
- 4.8 Channel Control Module (17-002101)
- 4.9 Channel Selective Module (17-003007)
- 4.10 12V Single Relay Board (80-008901)
- 4.11 12V Switch-Mode PSU (96-300052)
- 5. INSTALLATION
- 6. FAULT FINDING & MAINTENANCE
- 6.1 General Fault Finding Procedures
- 6.2 Downlink
- 6.3 Uplink
- 6.4 Fault repair
- 6.5 Checking service
- 6.6 Service Support
- 6.7 Tools & Test Equipment
- 6.8 General Maintenance Procedures
- _
- 6.9 Module Removal (LNA’s, general procedure)
- 6.10 Module Replacement (general)
- 6.11 Power Amplifiers
- 6.12 Low Power Amplifier Replacement
- 6.13 Module Transportation
- APPENDIX A
- _
- APPENDIX B
Two Channel UHF Cell Enhancer
User Handbook
Handbook Number: 50-187601HBKM Page: 36 of 51
4.8 Channel Control Module (17-002101)
4.8.1 Description
The purpose of the channel control modules is to change the channel selective module frequencies
by means of a series of D.I.P switch banks, each switch corresponding to a different ‘frequency bit’.
4.8.2 Technical Specification
Below shows the pin assignments for each switch on a channel control module.
IDC PIN 25-way Connector Function
1 13 Freq. bit 1 (12.5kHz)
2 25 Freq. bit 2 (25kHz)
3 12 Freq. bit 3 (50kHz)
4 24 Freq. bit 4 (100kHz)
5 11 Freq. bit 5 (200kHz)
6 23 Freq. bit 6 (400kHz)
7 10 Freq. bit 7 (800kHz)
8 22 Freq. bit 8 (1.6MHz)
9 9 Freq. bit 9 (3.2MHz)
10 21 Freq. bit 10 (6.4MHz)
11 8 Freq. bit 11 (12.8MHz)
12 20 Freq. bit 12 (25.6MHz)
13 7 Freq. bit 13 (51.2MHz)
14 19 Freq. bit 14 (102.4MHz)
15 6 Freq. bit 15 (204.8MHz)
16 18 Freq. bit 16 (409.6MHz)
17 5 Module alarm
18 17
19 4
20 16
21 3
N/C
22 15 +5V
23 2 0V
24 14 Switched 12V
25 1 0V
26 --- ---
4.8.3 VHF/ UHF Programming Procedure
Check that the required frequency falls within the operational frequency limits of the Cell Enhancer.
For each channel required, subtract the synthesiser offset from the required operating frequency and
record the resulting local oscillator frequency.
Divide each local oscillator frequency by the channel spacing and check that the result is an integer
(i.e.: no remainder).
If the synthesiser division ratio is not an integer value, check the required operational frequency and
repeat the calculation checking for mistakes.
Convert the required local oscillator frequency to synthesiser programming switch state patterns
according to the following table.
Switch number Synthesiser offset added when switch in UP position