EchoStar HUGHES JUPITER AN9-098-G, Руководство по установке

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Chapter 3 • Installing the antenna and radio
1039740-0001 Revision B
3. Insert the M4 Phillips head screw up through the feed support arm bracket
from underneath and into the threaded socket on the bottom of the radio, as
shown in
Figure 18 .
4. Tighten until snug.
Figure 18: Securing the radio
Changing transmit circular polarization (if needed)
The radio may be shipped with the polarizer set for left‐hand circular polarization
(LHCP) or right‐hand circular polarization (RHCP). There is no default setting. If the
radio polarization setting does not match the polarization required for the antenna
location, you will have to change the setting.
Determining the polarization setting
1. At the satellite modem System Control Center, enter the installation
parameters as described in the
JUPITER Antenna Pointing Guide
(1039429-0001) to obtain the required polarization setting.
2. Refer to Figure 19 on page 37 and check the position of the polarizer on the
radio.
— If the marker on the feed horn base aligns with L , the polarizer is set for
LHCP.
— If the marker aligns with R , the polarizer is set for RHCP. For example, the
radio shown in Figure 19 is set for LHCP, with the feed horn marker
pointing to the L.