User guide

Installing antennas and IRFUs Chapter 5: Installation
5-72
phn-2513_004v000 (Oct 2012)
Connecting the flexible waveguide to the IRFU
To connect the flexible waveguide from the antenna to the IRFU branching unit (BU),
proceed as follows:
1
Remove the protection cap from the BU mating flange (Figure 89).
2
Connect the flanged end of the flexible waveguide to its mating flange on the BU,
using the eight socket-head screws provided. Refer to Table 217 for the
waveguide and flange specifications.
3
Install the correct flange gasket according to the type of waveguide mating
flange (not supplied).
4
Check that the waveguide has been installed according to manufacturer’s
instructions, with sealed ends and a pressure window.
5
Pressurize the waveguide with dry air (using an appropriate dehydrator)
according to manufacturer’s instructions.
Figure 89 Partial rear view of IRFU with waveguide port