Installation of the ADU
3-22 Chapter 3: Installation 98-137654-A
3.3.3 Grounding the ADU
The ADU must be grounded using the mounting bolts. If the ADU
cannot or should not be electrically connected directly to the
mounting surface, you can use a separate grounding cable to make
the connection between the ADU and the common ground to which
the ACU is also connected. If grounding to the ship ground is
impossible, for example if you have a fibre glass hull, see
Alternative grounding for fibre glass hulls on page B-9.
To obtain a good ground connection, the metal underneath the
head of at least one bolt must be clean of insulating protective
coating and a serrated washer should be used. After tightening the
bolts we recommend that you seal the area suitably in order to
avoid corrosion of the grounding point. Use stainless steel bolts and
washers.
Optimum grounding is achieved by connecting the ground wire to
the bolt marked in Figure 3-20.
For further information on grounding and RF protection see
Grounding and RF protection on page B-1.
Figure 3-20: ADU, bolt for optimum grounding
Bolt used
for best grounding
SAILOR100TM.book Page 22 Tuesday, January 29, 2013 2:44 PM
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