Hughes HughesNet Ka-band, Pointing Manual

Page: 33 / 44

Chapter 2 • Pointing the antenna
1037663-0001 Revision A
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Pointing validation
During the pointing validation phase, you will record the final
dither readings and compare them to pointing accuracy
thresholds. The DAPT walks you through this process, displaying
the appropriate squinter position to use for each step.
Upon completion of the previous phase, the DAPT display reads:
This message indicates that the DAPT is capturing and storing the
SQF value without the squinter on the feed horn, also known as
the
center value.
1. Press Advance . The DAPT display shows a
Wait
message
for approximately 15 seconds, then reads:
2. Place the squinter on the feed horn in either of the two
azimuth positions as explained in Fine pointing on page 17,
and press Advance .
The DAPT display reads
Wait AZ1
while the IDU records
the first azimuth measurement. (This process could take up to
15 seconds.)
Note: Because you will be close to the feed horn when adjusting
the squinter during the pointing validation tests, it is likely that the
beacon signal will be lost for short periods of time. If the beacon
signal is lost, the SQF reading on the DAPT display reads:
Be careful that you do not block the front of the feed horn for
longer than 10 seconds. If the beacon signal is lost for more than
10 seconds, the satellite modem will most likely revert to coarse
pointing mode and you will have to start the pointing process over.