User Manual

Fibre Optic Master and Remote Site
User Handbook
Document Number: 60-212701HBK - Issue No. 1 Page 16 of 50
4. REMOTE SITE 60-212801
The Remote Site 60-212801 is composed of two rack mount chassis, one containing the filtering, and
amplification modules along with the fibre optic transmitter and receiver (60-212802), the second tray
is a 100 W amplifier (80-245101), part of the Downlink signal path.
60-212801 sub components
section Component
Part
Component Part Description Qty Per
Assembly
4.1. 80-245101 100W Linearised Amplifier 1
4.2. 60-212802 Remote Uplink/Downlink Tray 1
4.1. 100W Linearised Amplifier (80-245101)
100W Linearised Amplifier (80-245101) shelf is a Class A 100W TETRA Linearised Class A amplifier
where 4 linearised power amplifiers are combined together in a ‘phased-parallel’ arrangement. Its
housing is a 4U 19” Rack-mount shelf with SMA connectors for the RF input/output, 2 D-Type
connectors for the alarm function and 2 DC connectors with fuses for the 24 DC supplies. Cooling is
effected by fans mounted on the front panel.
It has a built in Current Fault Alarm Function with the four amplifiers in two summary alarm paths. The
summary alarm on ‘D’ connector ‘A’ will show an alarm for the two amplifiers mounted on the top of
the shelf (amplifier pair “A”). The summary alarm on ‘D’ connector ‘B’ will show an alarm for the two
amplifiers mounted at the bottom of the shelf (amplifier pair “B”)
4.1.1. 80-245101 Specification
PARAMETER SPECIFICATION
Frequency range: 440-500MHz
Small signal gain: 37dB
Gain flatness: ±0.5dB
I/O Return loss: >18dB
1dB compression point: +50dBm
OIP3: +69dBm
Supply voltage: 24V DC (x2)
Supply current: 18-19Amps
Impedance: 50ȍ
Environmental protection rating: IP44
operational: -10°C to +60°C
Temperature range
storage: -40°C to +70°C
Weight: <5kg
4.1.2. 80-245101 Parts List (Major Components)
AFL Part No. Part Description Qty.
05-002603 UHF 3dB Splitter/Combiner 6
12-026902 25W Linearised Amplifier Module 4
80-008902 24V Relay PCB Assembly 2
96-400002 Cooling Fan 4