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
4.3.4 0-30dB Attenuator Circuit Diagram, Drg. # 10-000770
BYDATEDESCRIPTIONNo
ISSUE
USED O N
SELECT
ON TE S T
OPTIONA L A TTENUA TION
RF IN
RF OUT
ATT1 ATT2 ATT3 ATT4
R5 R1 1 R1 7
R3 R4 R8 R9 R1 4 R1 5 R2 0 R2 1
R2 4 R2 5
R2 3
LK1
R1 9R1 3R7 R2 2R1 6R1 0
R2 R6 R1 2 R1 8
R1
22R 47R 100R 270R
22R 47R 100R 330R
470R 470R 470R 470R 470R 470R 220R 270R 270R 220R 150R 150R 150R 150R
10-000702
1 PRODUCTION ISSUE (CR0482)
25/6/93
DBS
REFER TO PCB SUB-ASSEMBLY FOR FURTHER COMPONENT INFORMATION
AREAS SHOWN THUS: SIGNIFY 50 ohm STRIPLINE.
1A PRODUCTION ISSUE (CR0962)
21/1/99
SEW
Fax: (01494) 777002
Tel: (01494) 777000
Aerial Facilities Ltd
THIS IS A PROPRIETARY DESIGN OF AERIAL FACILITIES LTD.
REPRO DUCTIO N O R USE O F T HIS DESIG N BY O THERS IS
PERMISSIBLE O NLY IF EXPRESSLY AUTHORISED IN WRITING
BY AERIAL FACILITIES LTD.
NO DECIM AL PL ACE ± 1 mm
ONE DECIMAL PLACE ± 0.3mm
TWO DECIM AL PL ACES ± 0 .1 m m
AL L DIMENSIO NS ARE IN m m
UNL ESS O THERWISE ST AT ED
CHKD
DRAWN
APPD
DATE
TO L ERANCES
SCAL E
England
CUSTO MER DRG .No
TITLE
A
3
ISS
ATTENUATOR, SWITCHED, 0.25W, 0-30dB,
CIRCUIT DIAGRAM
10-000770
1A
DBS
25/06/93
10-000703
Two Channel UHF Cell Enhancer
User Handbook
Handbook Number: 50-187601HBKM Page: 19 of 51