User Manual

Fibre Optic Master and Remote Site
User Handbook
Document Number: 60-212701HBK - Issue No. 1 Page 31 of 50
7 8 96
1 2 3 4 5
9-Way Pin-Out Graphical Representation
4.2.4.8. Low Power Amplifier (2W) (12-021802)
The low power amplifier used is a 1 stage balanced configuration, solid-state amplifier. Class A
circuitry is used in the unit to ensure excellent linearity over a very wide dynamic range. The three
active devices are very moderately rated to provide a long trouble-free working life.
Its housing is an aluminium case (Iridite NCP finish) with SMA connectors for the RF input/output and
a D-Type connector for the power supply and the Current Fault Alarm Function.
There are no adjustments on this amplifier, and in the unlikely event of failure then the entire amplifier
should be replaced.
12-021802 Specification
PARAMETER SPECIFICATION
Temperature
-20 to +70 qC
Frequency Range 380 - 500 MHz
Small Signal Gain 15.5 +/- 0.5 dB
Gain Flatness 0.7 dB p-p Max
'Gain vs. Temperature
0.7 dB Max
In RL 20 dB Min
Out RL 20 dB Min
Output Power @ 1dB Compression Point 33 dBm Min
Output 3
rd
Order IP 46 dBm Min
Noise Figure 6 dB Max
DC Supply Voltage 10-15 Vdc
DC Supply Current 850 mA Max
operational
-20qC to +70qC
Temperature
range
storage
-40qC to +100qC
Weight <0.5 kg
Size 110.5 x 66mm x 24.6mm
Low Power Amplifier (12-021802) 9-Way Connector Pin-outs
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