AValon RF GS-S - Manual (Page 6)

AVALON RF, INC. Page 4
GS Series User’s Guide & Operating Manual
1.1 RF Reception.
The GS-S-20 has a high gain 20 dBi flat panel antenna and a
detachable omni antenna (via a SMA connector) that works with our
advanced diversity electronics to yield excellent wireless video
reception. The video receiver is allowed to determine the best video
signal and the analog RSSI signals of both inputs are used to set up
a tracking mechanism.
1.2 Video Output.
The intelligent electronics in the GS-S-20 performs diversity both on
the rf signal and on the video signal. The final output is available dc
restored to ground and continuously corrected for optimum level (1V
p-p).
1.3 Telemetry Downlink.
With this feature, the audio sub-carrier on the rf signal is configured to
receive digital data at 4.8Kb/s. This received digital information is
then processed for timing recovery and made available at RS232
levels for direct connection to a serial port of a pc.
1.4 Control Uplink.
This data link is used as an uplink for camera control (typically PTZ)
and works on UHF frequencies. A separate (detachable) omni
directional antenna is installed on the GS-S-20 for communication
with a companion receiver on the airplane. The input data is RS232
compatible at 4.8Kb/s and is transmitted wirelessly with error
correction for accurate reception.
The combination of this uplink and the telemetry downlink gives a full
duplex data communication with the bird (UAV/ Helicopter).
1.5 Power.
The GS-S-20 works off a standard 12V power source. The load is
approx 1.2A or less. Please ensure that the power supply is capable
of at least 4-5A current output to allow for the turn-on current surge.