Subreflector
Adjustment
Step 1
Step 2
Step 3
Step 4
Refer to Figure 42. Use tape measure to set rim of subreflector to required distance of 119.110 in (302.6 cm) measured from the top of first seam hardware to the aperture plane of the subreflector using three subreflector adjustment studs.
Attach right angle viewing piece to theodolite. Move subreflector laterally to align the subreflector so it is centered with the theodolite while set at vertical (0° 00’ 00”). A hole is provided at the center of the subreflector to facilitate alignment.
Ensure subreflector is centered and set at required distance. Snug adjustment hardware after centering and height adjustments are complete.
Check distance between subreflector aperture plane and first seam reflector hardware.
Figure 42
45 | Installation Procedures |