Alcatel-Lucent 9500 MXC User Manual page 258

Chapter 2. Outdoor Installations
Vol. III-2-16
2. Remove all protective tape from the waveguide ports and check that the ODU/
coupler mounting collar, polarization rotator, coupler interface and O-ring,
are undamaged, clean, and dry.
3. Apply a thin layer of silicon grease around the coupler interface O-ring.
A tube of silicon grease is included in ODU and coupler installation kits.
4. Fully loosen the nuts on the four coupler mounting bolts.
5. Position the coupler so the waveguide slots (coupler and rotator) will be
aligned when the ODU is rotated to its end position.
6. Fit the coupler onto its mounting collar by inserting the bolts through receptor
holes in the collar, then rotate the coupler clockwise to bring the mounting
bolts hard up against the slot ends.
7. Carefully bring the coupler forward to fully engage the coupler feed head with
the polarization rotator in the mounting collar.
8. Finger-tighten the four nuts, checking to ensure correct engagement of
coupler with mounting collar.
9. Ensure the coupler bolt-down points are correctly seated, then tighten the four
nuts with an open-ended 19 mm (3/4") spanner.
10. To remove a coupler, reverse this procedure.
Figure 2-11 shows an installed coupler. Figure 2-12 and Figure 2-13 show a
completed installation with ODUs, surge suppressors and grounding.
Related procedures are:
• Installing the ODUs; refer to Direct-Mount ODU Attachment Procedure on
page 2-9. Note that when attaching an ODU to a coupler there is no requirement
to first set a polarization; the ODUs are attached such that when rotated into
position there is correct alignment of the waveguide slots. ODUs may be
attached such that cables exit to the right or left of the ODU.
• Installing the ODU Lightning Surge Suppressor; refer to Installing Lightning
Surge Suppressors on page 2-23.
• Grounding an ODU; refer to Grounding the ODU on page 2-13
Installing the ODU cable and connectors; refer to Installing ODU Cables and
Connectors on page 2-19
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