Andrew 9.3-Meter ESA - Manual (Page 40)

Theodolite
Leveling
Step 1
Step 2
Step 3
40
Installation Procedures
Figure 38
Refer to Figure 38. Assemble 3 brass rod holders as shown. The brass rod holders
used for calibration of the theodolite to the reflector and subsequent alignment of the
reflector, must be installed in the third seam holes at the panel seams shown.
Before taking any readings, allow the theodolite to become acclimated to ambient condi-
tions for at least 15 to 20 minutes prior to operation.
Notice proper installation orientation setting of tribrach assembly and the position of the
tribrach leveling screws with relation to the brass rod holders. After installation of
theodolite onto the torque tube assembly, it is necessary to level the theodolite to the
reflector. This procedure is performed by adjusting the three leveling screws of the trib-
ach assembly.
Centering
223718A