ViaSat 8116 Series, Инструкция по установке и эксплуатации

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CONTOUR ALIGNMENT SPECIFICATION AND RECORD
FOR 16 AND 18 METER ANTENNA
Antenna size _________ meters. ViaSat program manager ____________________________
Customer _________________________________ Installation location _________________________________
1. SCOPE
This specification provides panel installation and final alignment data. When completed it will also serve as a record of the
reflector alignment. Copies of this completed record are to be delivered to the customer and to the ViaSat program manager for
the job.
2. PREPARATION FOR PANEL INSTALLATION
All steps of specification 479820 leading up to Panel Contour Alignment must have been performed and verified.
Measured height from top of panel/feed mounting ring to theodolite elevation axis ___________ inches.
3. REFLECTOR PANEL INSTALLATION REFERENCE
First tier panels attach directly to the panel/feed mounting ring. All panels are spaced with a consistent 0.12 inch gap both
laterally and radially.
Offset for ½ of 0.12 inch gap (@ outside corner)
First tier: 24 panels at 15.0 degrees azimuth spacing 00-01-47 (DMS)
Second tier: 48 panels at 7.5 degrees azimuth spacing 00-01-02
Third tier: 48 panels at 7.5 degrees azimuth spacing 00-00-41
Fourth tier: 48 panels at 7.5 degrees azimuth spacing, 18 meter antenna only 00-00-36
Dimension from Theodolite elevation
axis to: 16 Meter Antenna 18 Meter Antenna
Radius Height Angle Radius Height Angle
Main reflector vertex 0 -10.75 NA 0 -10.75 NA
Top of Panel/Feed Mounting Ring 0 -10.75 NA 0 -10.75 NA
Top of Theodolite Mounting Plate 0 -9.25 NA 0 -9.25 NA
First Tier Inside 30.0 Fixed Fixed 30.0 Fixed Fixed
First Tier Outside Corner 119.94 6.454 86-55-12 119.94 6.454 86-55-12
Second Tier Outside Corner 204.95 40.824 78-44-04 204.95 40.824 78-44-04
Third Tier Outside Corner 315.00 110.536 70-39-49 314.95 111.371 70-31-33
Fourth Tier Outside Corner ▒▒▒▒ 355.00 143.656 67-58-07
4. PREPARATION FOR FINAL ALIGNMENT
Attach the drill template to the template arm, and install the arm to the spindle ring. The template must lie in the reflector with
the screw heads down and the splice and drill blocks facing up.
Drill 3/16 inch diameter holes 3 inches inside the edge of each panel using the 3rd, 4th, 7th, 8th, 10th, and 12th drill bushings,
and also the 13th and 15th drill bushings for the 18 meter antenna. Install a plastic theodolite target into each drilled hole, with
the white dots facing the theodolite.
April 23, 2004 ViaSat 479821B, page 2