Separate ground cable
98-133966-G1 Appendix F: Grounding and RF protection F-11
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Grounding and RF
F.6.2 Ground cable - connection
Mount the ground cable close to and parallel to the shielded coax cable
thus minimizing ground loop problems. If possible, route the coax cable
and the ground cable in metal conduits bonded to the hull or within a
mast (depending on the actual installation).
The ground cable must be connected at one of the
mounting/grounding bolts on the ADU. Use bolts and washers of
stainless steel and seal the joint with protective coating to avoid
corrosion. If the ADU is to be isolated from the mounting base, shoulder
bushings and washers must be used — see figure F-7, Isolation of the
ADU from the mounting base on page F-11.
At the other end, connect the ground cable as described in Grounding
the ACU on page F-2.
F.6.3 Isolation of the ADU from the
mounting base
In cases where the ADU is to be isolated from the mounting base,
shoulder bushings and washers (accessories) must be used as illustrated
below. Please note that the isolation has to be implemented on all four
mounting bolts (including the bolt securing the ground cable).
Figure F-7: Isolation of the ADU from the mounting base
Isolating shoulder bush
Isolating washer
Plain washer
Spring washer
(stainless steel)
(stainless steel)
SAILOR900TM.book Page 11 Monday, September 16, 2013 11:01 AM
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