Hughes HughesNet Ka-band, Руководство по указанию

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Chapter 2 • Pointing the antenna
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1037663-0001 Revision A
When connected properly, the DAPT powers up
automatically. Once powered up, the DAPT displays its
current status and IFL voltage on the LCD display, as shown
below. (Voltage reading shown below is only an example.
Actual voltage may vary.)
When you press the Advance button, the DAPT briefly
displays the current software version, as shown below. (The
software version shown in the example below is current at the
time of this release.)
After a few seconds, the following message appears briefly
while the measured IFL voltage is transferred to the IDU:
When the IDU receives the voltage response message, the
satellite modem advances to the
Point state, during which the
antenna can be coarse- and fine-pointed. At any time during
the Point state, you can select one of two filters to support
antenna pointing. The SNR or “short” filter responds quickly
to antenna movement, but is also more sensitive to
scintillation caused by fluctuating weather conditions. If the
SQF readings on the DAPT display vary significantly and do
not “settle down” readily, it is usually an indication of high
scintillation. The “long” filter is normally used to peak the
beacon SQF after the satellite has been found; however, it can
also be used to provide more stable feedback during high
levels of scintillation.
Note: If the IFL voltage shown is in the neighborhood of 50
volts, the DAPT has mistakenly been connected to the
transmit cable instead of the receive cable. Disconnect the
DAPT from the transmit cable and connect it to the receive
cable before proceeding.