MotoSAT J1 User And Installation Manual page 39

 Read both the Dish Elevation and Target Elevation values on the
HTML System Status page.
 Record the difference of these values.
 If Dish Elevation value is greater than Target Elevation then enter
difference as a positive value in the Elevation Origin field.
 If Dish Elevation value is less than Target Elevation then enter
difference as a negative value in the Elevation Origin field
After adjusting this value return to the main System Status Page to confirm the
Dish Elevation and Target Elevation values are approximately the same. (+/- .25
degrees)
When the Dish Mount is Stowed the Dish Elevation on the main System Status
Page will display the Elevation Origin Offset value with the +/- inverted.
Skew Origin
After a Calibrate Dish (Test Dish) is performed the total mechanical Skew
movement is recorded. Based on Skew counts per degree the mechanical
stall limits are known and total Degrees are assigned. Skew Origin is ½ of
the total degrees of Skew travel and is considered the lower stall limit.
Skew 0 (zero) is the center of this mechanical travel and is extremely
important for proper polarization for Transmitter Isolation.
Only under direction of MotoSAT technical support should this value be
modified.
This adjustment does not set the Stowed location of the LNB Feed
Assembly. See Skew Stow Position in this section.
Skew Offset
The J1 Controller use GPS Location to calculate the correct Horizontal
and Vertical Skew Angles of a specific satellite base upon the Dish
location on earth. However, some Satellites in the Clarke Orbit are
Skewed off several degrees from what should be a true H/V based upon
their Longitudal position.
Your ISP or NOC should provide you with a Skew Offset in this case
which you can add as a positive or negative value in Skew Offset. This
will correct the initial search skew angle.
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