Handbook
Table Of Contents
- AMENDMENT LIST RECORD SHEET
- INTRODUCTION
- 1.SAFETY CONSIDERATIONS
- 2.OVERVIEW/SYSTEM DESCRIPTION
- 3.SPECIFICATIONS
- 4.SYSTEM DRAWINGS
- 5.SUB-UNIT MODULES
- 5.1Bandpass Filter (02-011601)
- 5.22-Way Splitter/Combiner (05-002602)
- 5.34-Way Splitter/Combiner (05-003302)
- 5.4¼Watt 0- -30dB Switched Attenuator \(10-0007
- 5.5Low Noise Amplifiers (11-005902 & 11-006702)
- 5.5.1Description
- 5.5.2Technical Specification (11-005902)
- 5.5.3Drg. No. 11-005902 LNA General Assembly Drawing
- 5.5.4Drg. No. 11-005970, LNA Circuit Diagram (RF)
- 5.5.5Drg. No. 11-005971, LNA Circuit Diagram (DC Wiring Layout)
- 5.5.6Technical Specification (11-006702)
- 5.5.7Drg. No. 11-006702, LNA General Assembly Drawing
- 5.5.8Drg. No. 11-006770, LNA Circuit Diagram (RF Components)
- 5.5.9Drg. No. 11-006771, LNA DC Wiring Diagram
- 5.610Watt Power Amplifier (12-002105)
- 5.73 Stage Alarm Board (12-002201)
- 5.8DC/DC Converter, 24V in, 12V 8A out (13-003011)
- 5.9Channel Control & Channel Selective Modules (17-002101 & 17-009127)
- 5.1024V Single Relay Board (80-008902)
- 5.1124V 400W Flat-Pack Power Supply (96-300011)
- 6.INSTALLATION
- 7.MAINTENANCE
- APPENDIX AINITIAL EQUIPMENT SET-UP CALCULATIONS
800MHz BDA (Pasadena Figuero Tunnel)
Maintenance Handbook
H/book Number:-60-056100HBKM
Issue No:-1
Date:-21/10/2003
Page:-
28 of 52
5.6 10Watt Power Amplifier (12-002105)
5.6.1 Description
The power amplifiers fitted to this unit (up & downlink paths) are multi-stage, solid state
power amplifiers. Class A circuitry is employed throughout the device to ensure excellent
linearity over a wide dynamic frequency range. All the semi-conductor devices are very
conservatively rated to ensure low device junction temperatures and a long, trouble free
working lifetime.
The power amplifiers should require no maintenance over their operating life. Under no
circumstances should the cover be removed or the side adjustments disturbed unless it is
certain that the amplifier has failed; since it is critically aligned during manufacture and
any re-alignment will require extensive test equipment.
5.6.2 Technical Specification
PARAMETER SPECIFICATION
Frequency range: 800 - 970MHz (tuned to spec.)
Bandwidth: 10 - 100MHz (typical, tuned to
spec.)
Maximum RF output: >10.0 Watt
Gain: 30dB
1dB compression point: +40dBm
3
rd
order intercept point: +50dBm
VSWR: better than 1.5:1
Connectors: SMA female
Supply: 2.8A @ 24V DC
operational:
-10°C to +55°C
Temperature range:
storage:
-40°C to +70°C
Weight: 1.5 Kg (case only)