1035930-0001 Revision 2
7-1
7.0 ANTENNA POINTING
7.1 POINTING PROCEDURES
This section describes how to point the antenna at the satellite. Correct alignment is critical to the
operation of the system. When the antenna is pointed directly at the satellite, it receives a strong signal.
If it is not positioned properly, the signal may be weak, and errors may result during data transfers. The
signal quality would also deteriorate on cloudy, windy, or rainy days.
The predetermined elevation angle, azimuth heading, and polarization angle should be accurate enough to
allow the antenna to acquire the satellite signal. You may need to refer to the indoor unit (IDU) manual
for other pointing or peaking information
Pre-setting elevation, azimuth, and polarization
1.
Using the predetermined elevation angle, which was roughly preset during antenna assembly,
raise or lower the antenna until the angle is read on the elevation scale. Raising the antenna
increases elevation. Lowering it decreases elevation. Rotate the top hex nut on the elevation
adjustment rod sufficiently away from the pinion. Raise the antenna by turning the lower hex nut
of the elevation adjustment rod clockwise. Lower the antenna by turning the hex nut counter-
clockwise.
2.
Note that there are two possible pinion mounting slots in the az/el assembly. See Figure 16. The
assembly is shipped with the pinion in the upper mounting slot. This position is for elevation
angles from 0 degrees up to 55 degrees. Fro elevation angles greater than 55 degrees, it will be
necessary to move the pinion to the lower mounting slot before setting elevation.
Elevation Lock
Down Hardware
Elevation Scale
Elevation Lock
Down Hardware
Upper Mounting
Slot
Lower
Mounting Slot
FIGURE 15
FIGURE 16
Summary of Contents for DIRECWAY
Page 27: ...1035930 0001 Revision 2 8 4 ...