User Manual

Fibre Optic Master and Remote Site
User Handbook
Document Number: 60-212701HBK - Issue No. 1 Page 29 of 50
4.2.4.6. Low Power Amplifier (1W) (11-007901)
This amplifier is dedicated to be a 1.0 W driver from 380 MHz to 470 MHz. It is a 2 stage amplifier
where each stage is in balanced configuration. It demonstrates very high linearity and good
input/output VSWR. There is a Current Fault Alarm Function, which indicates failure of each one of
the RF transistors by various alarm output options. The amplifier is housed in an aluminium case
(Iridite NCP finish) with SMA connectors for the RF input/output and a 9way D-type connector for DC
and alarm outputs.
11-007901 Specifications
PARAMETER SPECIFICATION
Frequency range: 380-470MHz
Small signal gain: 37.5dB
Gain flatness: ±0.5dB
Gain vs. temperature: 1.5dB
operational:
-20qC to +60qC
Temperature range:
storage:
-40qC to +70qC
Input/output return loss: 18dB
Maximum output power: 30.4dBm (@ 1dB comp. point)
OIP3: 43dBm
Supply voltage: 10-15V DC
Current consumption: 780mA (typical)
Noise Figure: <1.75dB
LNA ‘D’ Connector Pin-out details
Connector pin Signal
1 +ve input (10-24V)
2 GND
3 Alarm relay O/P bad
4 Alarm relay common
5 Alarm relay good
6 No connection
7 TTL voltage set
8 TTL alarm/0V (good)
9 O/C good/0V bad