User Manual

STTRS DOCUMENTATION
Document Number 80-330501HBKM – Issue A - Draft Page 186 of 500
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9-Way Pin-Out Graphical Representation
11.4.2.7. Low Noise Amplifier (11-006702)
The Gallium-Arsenide low noise amplifiers used in 800MHz Line Amplifier (55-165703) are double
stage, solid-state low noise amplifiers. Class A circuitry is used throughout the units to ensure
excellent linearity and extremely low noise over a very wide dynamic range. The active devices are
very moderately rated to provide a long trouble-free working life. There are no adjustments on these
amplifiers, and in the unlikely event of a failure, then the complete amplifier should be replaced. This
amplifier features its own in-built alarm system which gives a volt-free relay contact type alarm that is
easily integrated into the main alarm system.
11-006702 Specification
PARAMETER SPECIFICATION
Frequency range: 800 – 1000MHz
Bandwidth: <200MHz
Gain: 29dB (typical)
1dB Compression point: 20dBm
OIP3: 33dBm
Input/Output return loss: >18dB
Noise figure: 1.3dB (typical)
Power consumption: 180mA @ 24V DC
Supply voltage: 10-24V DC
Connectors: SMA female
operational: -10°C to +60°C
Temperature range:
storage: -20°C to +70°C
Size: 90 x 55 x 30.2mm
Weight: 290gms (approximately)
Low Noise Amplifier (11-006702) ‘D’ Connector Pin-out details
Connector pin Signal
1 +Ve input (10-24V)
2 GND
3 Alarm RelayO/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