500-0646A 36
2.2.16 Electrical Installation
The electrical installation should be conducted by referring to the appropriate Electrical
Installation Drawing included in the print pack.
Controller installation and configuration should be in accordance with the individual
Antenna Control System Manual provided with the controller.
2.2.17 Positioning the Antenna on the Satellite
To position the antenna, the elevation and azimuth pointing angles must be known.
These angles are specific for each site location and satellite. This information can be
obtained from the satellite operator and mapping data of the antenna location.
2.2.18 Adjustment of Elevation Axis
The elevation look angle can easily be found by using the bottom of the feed boom as
the reference datum. The bottom of the feed boom is parallel to the RF axis, hence, use
of an inclinometer on the bottom of the feed boom will give the elevation look angle of
the antenna. Adjust the antenna in elevation using the adjustment nuts on the elevation
strut (or by driving the jack), until the inclinometer is at the desired look angle. See
Figure 31.
2.2.19 Adjustment of Azimuth Axis
Step 1.
Use a compass to sight along the feed boom to locate the desired azimuth angle.
Note:
When using a compass note that true north varies from magnetic north
depending on the site location. The compass reading can also be
affected by steel structures in close vicinity to the compass.
Step 2.
If the desired angle is near the end of, or beyond the azimuth travel for that position of
the rotating jack arm, the arm can be repositioned as explained below. Otherwise
skip to Section 2.2.21.
2.2.20 Repositioning the Azimuth Rotating Jack Arm
CAUTION!
THIS PROCEDURE MAY ONLY BE PERFORMED IN WINDS LESS
THAN 20 MPH. ATTEMPTING TO DO THIS IN STRONGER WINDS
CAN CAUSE SERIOUS DAMAGE TO THE ANTENNA STRUCTURE
OR OTHER STRUCTURES IN CLOSE PROXIMITY TO THE
REFLECTOR AND COULD CAUSE BODILY HARM.
Step 1.
Loosen hardware and remove from the V-frame lug.
Step 2.
Manually move the pedestal to the desired position and re-attach the opposite V-
frame lug. Tighten the hardware to the specified torque values.
2.2.21 Peaking the Antenna on the Satellite
Note:
When peaking the antenna on the satellite a spectrum analyzer should
be used with the following instructions.
Summary of Contents for 500-0646
Page 8: ...500 0646A vi LIST OF TABLES Table 1 Tool List 3...
Page 23: ...500 0646A 14 Figure 11 Radial Beam Installation...
Page 24: ...500 0646A 15 Figure 12 Reflector Lacing Assembly...
Page 26: ...500 0646A 17 Figure 13 Reflector Panel Assembly...
Page 28: ...500 0646A 19 Figure 14 Reflector Panel Assembly Order...
Page 31: ...500 0646A 22 Figure 16 Feed Boom Assembly...
Page 33: ...500 0646A 24 Figure 17 Feed Boom Assembly Supports...
Page 37: ...500 0646A 28 Figure 20 Feed Assembly Figure 21 Feed Alignment...
Page 44: ...500 0646A 35 Figure 29 Azimuth Resolver with Bracket Figure 30 Azimuth Resolver side view...
Page 54: ...500 0646A A 3...
