User's Manual

3CC12425AAAA TQ BJA 01 Issue 01 - April 2001 - Draft 03 29/70
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3.4 – To ground the X-Pol RT
The following parts and supplies are required:
– an adequate length of ground conductor
– an M6 ring lug
– a 1.0 thread pitch, 10 mm M6 bolt
– dielectric paste
1. Measure a length of ground conductor sufficient to run from the X-Pol RBS Tx or X-Pol RBS Rx to
the nearest suitable ground point. The required diameter, metal type and physical type of the ground
conductor may vary according to local regulations. Consult local electrical authorities for information.
2. Connect an uninsulated M6 ring lug connector securely to one end of the ground conductor using a
suitable mechanical connection method.
3. Apply an appropriately rated dielectric paste liberally to both sides of the ring lug.
4. Connect the ring lug to the X-Pol RT case with the M6 X-Pol RT ground bolt, located on the side
(side-mount X-Pol RT) or back (rear-mount X-Pol RT) of the X-Pol RT case. Tighten the bolt to
10.8 Nm ± 2.7 Nm (8 ft-lb ± 2 ft-lb) of torque.
5. Connect the remaining end of the ground conductor to a suitable lightning discharge ground, using
a mechanical connection method that is approved by local electrical authorities.
3.5 – Installation of the Terminal Station X-Pol RT unit with a non
integrated antenna
3.6 – Installation of the X-Pol RT/NT link
Procedures
– The electrical connection between the X-Pol RT unit and the NT unit of the Terminal Station is
made using a type FILOTEX or 5916 75 ohm coaxial cable equipped with "F" connectors on each
end.
– If the X-Pol RT unit is connected to two NTs, use one splitter.
– The length of the cable used must be recorded. Refer to the numbers printed on the cable at one
meter intervals to determine the length of cable installed (subtract the number printed on one end
of the cable from the number printed on the other end of the cable).
– Secure the coaxial cable every meter with a cable tie. Use collars fitted to the support used for the
path.
Figure 11 – Coaxial cable
75Ω "F" connector To X-Pol RT unit
"F" connector To NT unit