Ross SRG-4400, Руководство пользователя

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14–4 • GPS Option SRG-4400 User Manual (Iss. 06)
Installing the GPS Antenna
The GPS antenna must be mounted in an outdoor location, and be positioned such that it has an
uninterrupted view of the sky, i.e. with as much of the hemisphere of sky above it in plain view.
With the GPS Option enabled, the SRG-4400 provides a 5 volt DC voltage that is impressed upon
the RF signal line. The current is internally limited to 50mA. The Ross supplied antenna and line
amplifier (optional equipment) require less than 30mA combined.
To install the GPS antenna
1. Remove the nut and washer from beneath the antenna cap.
Figure 14.1 Antenna Cap — Location of Nut and Washer
2. Cut a hole in the surface that will allow the cable to be thread through the surface. The
cap will rest above the surface. Refer to
Figure 14.2 for dimensions.
Figure 14.2 Antenna Cap — Dimensions
3.
Position the cap above the hole and ensure the cable is easily fed through the hole of the
surface.
Figure 14.3 Positioning the Antenna Cap
Cap
Nut
Cable
Washer
10.0
M14x1.25