ViaSat 8116 Series, Инструкция по установке и эксплуатации

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MECHANICAL ALIGNMENT SPECIFICATION AND REPORT
FOR 16 AND 18 METER LIMITED MOTION ANTENNA
Antenna size _________ meters. ViaSat program manager __________________________________
Customer _________________________________ Installation location __________________________________
7.0 PANEL CONTOUR ALIGNMENT
Panel contour alignment has been performed according to procedure 479821, at the customer's average elevation look
angle (or 35 to 40 degrees if look angle is not specified). Reflector panel target deviation should be no greater than 0.010
inch RMS.
Reflector alignment elevation angle _________ degrees.
Reflector alignment deviation ________ inch RMS.
ViaSat Rep._________________________________________
Date:____________________
8.0 SUBREFLECTOR ALIGNMENT
Subreflector alignment should be performed at the same elevation angle as panel alignment.
Subreflector alignment elevation angle _________ degrees.
The subreflector perpendicular distance to top of feed/panel mounting ring (vertex) should be:
192.43 inches (± 0.25) for 16 Meter Antenna
194.69 inches (± 0.25) for 18 Meter Antenna.
Actual measured distance ________ inches.
The subreflector mirror crosshair should be set to less than .060 inch (or 70 arc seconds) deviation from the reflector
parabolic axis.
Actual Deviation________ inches/seconds. (Circle one).
The subreflector mirror perpendicular (autoreflection) deviation should be less than sixty (60) arc seconds.
Actual Deviation _______ seconds.
ViaSat Rep._________________________________________
Date:____________________
May 15, 1996 ViaSat 479820A
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