COBHAM SAILOR 600 VSAT Ka, Руководство по установке

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Installation of the ADU
98-148248-A Chapter 3: Installation 3-19
Installation
3.3.3 To ground the ADU
The ADU must be grounded using one of the mounting bolts.
To ground the ADU do as follows:
1. Clean the metal underneath the head of
at least
one bolt of insulating protective
coating and use a serrated washer to obtain a good ground connection
2. Tighten the bolt. Use stainless steel bolts and washers.
Tightening torque value: 30 Nm.
3. Seal the area suitably to avoid corrosion of the grounding point (recommended).
For optimum grounding connect the ground wire to the bolt marked in the figure below.
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 ground for fibre glass
hulls on page B-7.
For further information on grounding and RF protection see the appendix Ground and RF
protection on page B-1.
Figure 3-18: ADU, thread for optimum grounding
282.8
R221 R238
200
200
220
226.4
18
73.5
THREAD for GROUNDING
M10 (depth: 22mm)
SAILOR600Ka-IM-98-148248.book Page 19 Monday, November 23, 2015 1:36 PM