Comtech EF Data C5 - Manual (Page 104)

Installation C5/K1/K3 Integrated Satellite Terminal System
3–8 Rev. 0
3.3.2 ODU Installation
3.3.2.1 C-Band ODU Installation
1. Install LNA with TRF to OMT as follows.
a. Visually check connection of the LNA to the TRF. Ensure attaching
hardware is present and secured.
b. Position the antenna waveguide in place on the RF IN connector and secure
with 1/4-20 x 1 bolts, 1/4 split lockwashers, 1/4 flat washers, and 1/4-20
nuts. Do not tighten the bolts and nuts at this time. (See Figure 3-2.)
c. Tighten bolts and nuts according to the illustrated sequence shown in
Figure 3-2.
d. Remove the plastic covers from all the connectors and attach the appropriate
cables.
e. Place the appropriate o-ring on the LNA.
f. Position the LNA on the OMT and secure in place using 10 screws, split
washers, flat washers, and nuts.
2. Install ODU ( Figure 3-3)as follows:
a. Install ring brackets on the ODU and secure to bracket using supplied
hardware.
b. Position the ODU on the satellite spar and secure with two U-bolts, four split
washers, and four nuts.
Note: Selection of o-ring is determined by the addition of an o-ring
groove in the LNA flange. Use larger o-ring if groove is present.