Campbell Scientific RAWS-H Remote Automated Weather Station - Manual (Page 17)

RAWS-H Remote Automated Weather Station
5.4 GOES Transmitter
5.4.1 General Description
The High Data Rate GOES transmitter (pn TX320) shown in FIGURE 5-2
supports one-way communication, via satellite, from a Campbell Scientific
datalogger to a ground receiving station. Satellite telemetry offers a convenient
communication alternative for field stations where phone systems or RF
systems are impractical or rendered unreliable after a tragedy to the local
infrastructure. Data transmission rates of 100, 300, and 1200 bps are
supported. Because clock accuracy is critical for GOES satellite telemetry, the
TX320 includes a robust, TCXO-based real-time clock and a GPS receiver.
The TX320 has two siting requirements for proper operation. The GOES
antenna must have a clear view of the spacecraft. The GOES antenna is
directional and should be aimed at the spacecraft; both elevation and azimuth
are unique to the location of the planet and must be set. A poorly aimed
antenna will cause a drop in signal strength or possibly prevent successful
transmission.
For more information on the TX320 and antenna siting, go to our website at
www.campbellsci.com , enter the “TX320” in the “Search” box, and go to the
equipment manual. The TX320 manual is also provided on the ResourceDVD
which ships with the RAWS-H.
The spacecraft specific DCP-Setup parameters for the GOES
transmitter must be entered in the CR1000 program. NOTE
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