P a g e
|
69
8.4.3 - Calibrating Pitch and Roll
This procedure requires the use of a digital inclinometer that is accurate to at least +/-
0.1 degrees.
The system should be stowed. Enter the debug menu as described above.
1.
The IDU screen should display “trk>”.
2.
Hold down the control key (ctrl), press “t”, release both keys and then press enter.
a.
The IDU screen should change to the capital “TRK>” prompt.
3.
At the “TRK>” prompt type “tilt” and press enter.
a.
The IDU screen should now display the “TILT>” prompt.
4.
At the “TILT>” prompt type “mount [pitch] [roll]” and press enter.
a.
[pitch] and [roll] are the values obtained using the inclinometer (see figures
below).
b.
The command for the following example would be “mount -0.5 -0.4”
c.
The IDU will display the message “Is the antenna stowed with p=[pitch],
r=[roll]? y/n”
d.
Selecting “n” will cancel the calibration.
e.
Selecting “y” will display the message “Calibration Successful”.
5.
The pitch and roll should be verified. Type “att” and press return.
a.
The IDU should now display the “ATT>” prompt.
6.
Type “att” and press return.
a.
Values for pitch, roll, and heading will now be displayed on the IDU screen.
b.
Press any key to stop.
c.
The pitch and roll should be +/- 0.2 degrees from the values entered.
Pitch
– If the front of the
system is higher than the
rear, the pitch is a positive
value. The front of the
system is the antenna dish
and the rear is the
actuator.
Pitch
– In this example the
front of the system is lower
than the rear, so the pitch
is -0.5 degrees.
Summary of Contents for WX980
Page 10: ...P a g e 10 3 Open lids on both sides as shown below ...
Page 19: ...P a g e 19 ...
Page 56: ...P a g e 56 ...
Page 81: ...P a g e 81 9 4 Wiring Diagram User Supplied Device ...
