2-2
Installation
XT-50, XT-80, and XT-100 Amplifiers
Waveguide Connection
The RF output waveguide port (C-Band and X-Band CPR-137G, or Ku-Band WR-75) is located on the
“output end” of the amplifier as shown in Figure 2-2.
Figure 2-2
. “Output End”
Proceed as follows:
1.
Ensure that the proper matching waveguide flange and gaskets are used to
connect the RF output to the feed system or antenna.
2.
Position the interconnecting waveguide flange parallel to the output
waveguide flange. Make sure that the flanges can be mated without strain
or torsion.
3.
If the two flanges cannot be properly aligned or if the installation is subject
to vibration, a flexible waveguide section should be utilized to eliminate
potential strain on the waveguide connection.
4.
Insert any necessary gasket and/or window between the two flanges.
If the connecting waveguide is to be pressurized at greater than 5
psi, a waveguide window must be installed at the output flange of
the amplifier.
5.
Install and hand tighten all mounting screws (#6-32 for Ku-Band and #10-
32 for C-Band and X-Band).
Do not overtighten the waveguide mounting screws.
Overtightening may strip the threads in the waveguide flange.
6.
Tighten all mounting screws to the torque values shown in Figure 2-3. A
typical sequence is indicated by the numbers in the grayed areas of Figure
2-3. Proceed as follows:
a.
Partially tighten one of the screws (#1).
b.
Move the tool to the screw that is diagonally opposite to the screw
tightened in step 1 (#2) and partially tighten that screw.
c.
Move clockwise to the next screw to be tightened (#3) and partially tighten
that screw.
d.
Move to the screw diagonally opposite screw #3 and partially tighten that
screw (#4).
e.
Repeat this process for the remaining screws (#5-#6, #7-#8).
f.
When you reach the first screw tightened in step a (#1) increase the torque
on the screw and repeat the process of steps (1) through (5) until the
screws have all been tightened to the torque levels included in Figure 2-3.
