Sailor 100, Руководство по установке

Страница: 153 / 186

Grounding Recommendations
98-136280-B Appendix B: Grounding and RF protection B-3
BBBB
Gr
ounding and RF
Per used jumper cable the maximum cable length of the cable to the antenna is
reduced by:
• Enviroflex 400: 1.25 m
• SPUMA 400-FR: 6 m
• SUCOFEED 1/2" FR: 10 m
B.2.2 Grounding the ADU
You can ground the ADU to the ship/hull via one or more 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 possible grounding path e.g. on
steel hulls the ADU should be grounded directly to the hull
2
. However, due to the fact
that this is not possible on e.g. fibreglass hulls (nor is it preferable on aluminium hulls)
a number of alternative grounding methods are suggested in the following
paragraphs.
Figure B-2: Grounding the ADU
Note
For optimum grounding use the mounting bolt located closest to the ADU
cable plate, see Figure 3-20:
ADU, bolt for optimum grounding on page 3-20.
2. Please note that the ADU ground connection is made at the same electrical ground potential as
the ACU.
Antenna bottom
Mounting base
M12 bolt
Serrated washer
(stainless steel)
(stainless steel)
SAILOR100IM.book Page 3 Friday, January 18, 2013 10:28 AM