WR-ARP-ELAZ-100 and WR-RCU-100 Technical User’s Guide
12
Rev. F
1. Use a GPS receiver to obtain the exact GPS coordinates of the rotator.
2. Record the latitude/longitude of this point using maximum precision.
3. Now, in Google Earth, click Add … Placemark.
4. In the Name field, enter “Rotator”.
5. Enter the rotator Latitude and Longitude. Any of the following formats may be
used:
ddd mm’ ss.ss” (degrees, minutes, seconds, decimal seconds)
ddd mm.mmmm’ (degrees, minutes, decimal minutes)
ddd.dddddd (degrees, decimal degrees)
Example: Lat = 25 26' 47.70" S and Long = 122 34’ 42.81” E
6. Click OK to fix the marker on the map.
7. Now, perform the same procedure to add a Placemark for the target object.
8.1.2 Azimuth alignment using a compass
Using a compass, determine the direction of magnetic North. Now, do the correction
to find the orientation of true North. Loosen the pinch bolts on the azimuth mast
clamp. Swing the antenna sideways until it points in the direction of true North.
Securely tighten clamp the pinch bolts.
8.2. Elevation Alignment
The reason for performing elevation alignment is to ensure that the antenna is
positioned horizontally when the Manual Tracking Controller software shows rotator
elevation as 0 degrees.
If accurate elevation alignment is not important in your application, simply align the
antenna horizontally by doing a visual inspection.
If accurate elevation alignment is crucial in your application, then place a spirit level
horizontally on the antenna. If your antenna is a dish, rotate the dish to an elevation
of 90degrees by using the Manual Tracking Controller software elevation control, and
then place the spirit level across the top of the dish. Slightly loosen the pinch bolts on
the elevation stub mast clamp and turn the antenna until it is level. Then, securely
tighten the pinch bolts. To confirm proper alignment, rotate the antenna azimuth
through 360 degrees using the Manual Tracking Controller software azimuth control,
observing that the antenna is level at all azimuth settings. Once the elevation
alignment is done, the elevation orientation can be fine tuned using the elevation
offset control in order to compensate for inaccuracies.
Note: For accurate alignment, it is essential that your mast must be absolutely
plumb (vertical).
