Winegard WV750 Product Manual page 50

d. At the "DC>" prompt, enter the command "p 0 +100" and press enter. This will
rotate the azimuth counterclockwise back towards the center of the tray.
e. Continue to rotate the azimuth towards the center. It may be necessary to
decrease the amount of travel by entering values less than 100 in order to stop
at exactly the center position.
f. The system must be brought to the center position from this direction. If the
system overshoots the center position, it will be necessary to start back at step
5c above.
7. Calibrate the center (0) position.
a. From the "DC>" prompt, type "calib" and press enter.
b. Then type "y" when asked if the azimuth is at 0 (do not press enter).
c. The azimuth should move in both directions. It may not return to the centered
position.
8. From the "DC>" menu, type "home" and press enter.
a. The IDU screen should change to the "HOME>" prompt.
9. At the "HOME>" prompt type "h" and press enter.
a. The system should go through a motor calibration.
b. Verify that when the system stows it is centered on the stow tray.
c. If the system is not centered, it will be necessary to return to step 3 and repeat
this procedure.
8.4.2 - 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.
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