TracVision M3-DX, Руководство пользователя

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TracVision M3 User’s Guide
31
Chapter 4 - Setup
Setting the LNB Skew Angle
To optimize reception, the antenna’s LNB (low-noise block) must be
set to the correct skew angle for the satellite(s) you want to track.
Follow the steps below to set the antenna’s LNB skew angle.
1. First determine what the correct skew angle should be
for your selected satellite(s) and position. You can find
the correct skew angle by either reading the system
startup screens (see “System Startup” on page 13 ) or
running the Diagnostics test (see “Running the
Diagnostics Test” on page 42 ).
Check the reported latitude/longitude as well. If the
interface box reports a latitude/longitude that is more
than 600 km (400 mi) away from your vessel’s actual
position, you should re-enter your position into the
interface box to obtain a more accurate skew angle. See
“Entering Latitude/Longitude” on page 22 .
Figure 4-1 Latitude/Longitude Reported During System Startup
Figure 4-2 Skew Angle Reported During System Startup
2. Turn off and unplug your satellite TV receiver.
3. Press the POWER switch on the front of the
TracVision interface box to turn off the TracVision
system. Make sure the VOLTAGE light goes out.
4. Remove the three #10-32 Phillips screws securing the
radome to the antenna.
CAUTION
Disconnect power from the antenna before you remove the
radome. The antenna has moving parts that can cause
injury.
LAT/LONG: 55N, 012E
AVERAGE SKEW:-12.3
CHECK LNB SETTING