KVH Industries TracPhone F55, Installation Manual

Page: 133 / 157

Appendix G: Grounding and RF protection
Grounding Recommendations 111
GGG
G.4.2 Grounding the ADU
The ADU must be grounded to the ship/hull via at least one of its mounting
bolts. Make sure to remove painting, dirt, grease etc. at the mounting holes in
order to make good electrical contact to the hull. Use serrated washers when
securing the mounting bolts and seal the joint with protective coating to avoid
corrosion.
It is always recommended to establish the shortest grounding path as possible
e.g. on steel hulls the ADU should be grounded directly to the hull
1
. However,
due to the fact that this is not possible on e.g. fiberglass hulls (nor is it
preferable on aluminum hulls) a number of alternative grounding methods
are suggested in the following paragraphs.
1. Please note that the ADU ground connection is made at the same electrical
ground potential as the BDU.
Mounting Base
M10 Mounting Bolt
(stainless steel)
Serrated Washer
(stainless steel)
Grounding/Mounting Stud on ADU
ADU
tighten to 25 +/- 5 Nm