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A Guide to TracVision L3
3-4
begin tracking the satellite again. This convenient feature is ideal
for when a vehicle is parked for a short time or idling and
passengers want to watch TV.
KVH recognizes that some customers may not want to take
advantage of this convenient feature. In this case, it is possible to
disable Sleep Mode using a simple software command as follows:
1. Connect a laptop computer to the system used the
maintenance port and a terminal emulation
program, as described in Section 2.4.1, Installing
Your Selected Satellites.
2. Turn on the antenna. When the limit switch test is
complete:
A. Type
HALT<cr>
return/ENTER key)
B. Type
DEBUGON<cr>
C. Type
SLEEPOFF<cr>
3. Cycle the antenna's power. Sleep Mode is now
disabled.
4. To reactivate Sleep Mode, follow this same
process, instead using
Conical Scan Tracking
The antenna control unit uses conical scanning to maintain peak
signal strength to the receiver and to update the satellite's
position. When conical scan tracking is active, the antenna moves
continually with a circular motion to sweep across the satellite's
peak signal. The signal strength is then fed back to the control
circuits to keep coming back to the direction of the strongest
signal.
If the satellite signal is lost while the system is in conical scan
track mode, the control software imposes a 45-second time-out
delay. If the signal is not regained during that time, the antenna
reverts to the set of Search Modes to start looking for the satellite
signal. This is an automatic process that does not require user
intervention.
(<cr> indicates a carriage
in Step C.
SLEEPON<cr>
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Table of Contents
Troubleshooting
