User's Manual

Two Channel 400MHz Cell Enhancer
User Handbook
Handbook N.-50-128501HBK Issue No:-A
Date:-12/08/2005
Page:-
22 of 39
4.7 5Watt Medium Power Tetra Amplifier (12-021601)
4.7.1 Description
The power amplifier fitted to this unit is a multi-stage, solid state power amplifier. 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 amplifier should require no maintenance over its 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.
4.7.2 Technical Specification
PARAMETER SPECIFICATION
Frequency range: 380-470MHz (as required)
Bandwidth: 10-40MHz (typical, tuned to spec.)
Maximum RF output: >5Watts
Gain: >30dB
1dB compression point: +37.5dBm
3
rd
order intercept point: +50dBm
VSWR: better than 1.5:1
Connectors: SMA female
Supply: 1.9Amps @ 12V DC
Weight: 1kg (excluding heatsink)
operational:
-10°C to +60°C
Temperature range:
storage:
-20°C to +70°C
4.7.3 PA 7-Way Connector Pin-outs
Connector Pin Signal
A1 (large pin) +12V DC
A2 (large pin) GND
1 Alarm relay common
2 TTL alarm/0V good
3 Alarm relay contact (bad)
4 Alarm relay contact (good)
5 O/C good/0V bad (TTL)