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 14
on page 31.
4.
Tighten until snug.
Figure 14: 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 15
on page 32 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 15
is set for LHCP, with the feed
horn marker pointing to the L.
Chapter 3 • Installing the antenna and radio
1039384-0001 Revision C
31
