Separate ground cable
B-12 Appendix B: Ground and RF protection 99-145912-A
B.6.2 Ground cable - connection
To mount the ground cable do as follows:
1. 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).
2. Connect the ground cable at one of the mounting/grounding bolts
on the ADU.
3. Use bolts and washers of stainless steel and seal the joint with
protective coating to avoid corrosion.
4. If the ADU is to be isolated from the mounting base, use shoulder
bushings and washer, see figure B-7, Isolation of the ADU from the
mounting base on page B-12.
5. At the other end, connect the ground cable as described in To
ground the ACU on page B-2.
B.6.3 Isolation of the ADU from the mounting base
In cases where the ADU is to be isolated from the mounting base, do as
follows:
1. Use shoulder bushings and washers (accessories) as illustrated
below. Note that the isolation must be implemented on all four
mounting bolts (including the bolt securing the ground cable).
2. Connect the ground cable at one of the mounting/grounding bolts
on the ADU as illustrated below.
Figure B-7: Isolation of the ADU from the mounting base
Isolating shoulder bush
Isolating washer
Plain washer
Spring washer
(stainless steel)
(stainless steel)
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