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13
Connect Power
Before connecting power, be sure the vessel is
properly grounded in accordance with marine
standards.
Grounding Requirements
Proper grounding of the TracVision system to
ship's ground is critically important, as it
protects the equipment from lightning and
electrostatic discharges (ESD). Follow these steps
to ground the system.
a. Connect the hoop of the grounding wire
(supplied in the kit) to the "Ground" screw
on the rear panel of the TV-Hub. Connect the
other end to ship's ground.
b. If multiple RF cables are connected to the
antenna, connect one or two grounding
blocks in-line with all of the RF cables (a
second grounding block is needed for RF3
and RF4). Attach a ground wire from each
grounding block to ship's ground. Then
mount each grounding block using the two
supplied #6 screws (see Figure 38).
WARNING
Failure to ground the TracVision system
properly to the vessel's ground will cause an
unsafe floating ground condition, risking
damage to the antenna and electric shock,
potentially resulting in DEATH. In a
floating ground condition, the difference
between the equipment's chassis ground and
the vessel's ground can measure well over
100 volts, when it normally should not
exceed 25 volts. Therefore, always measure
the difference in potential between chassis
ground and the vessel's ground to make
certain that there is no dangerous floating
ground condition, even if the ground pin of
the vessel's AC power plug appears to be
intact.
Figure 38: Grounding Block Example
Grounding Block
Deck
TV-Hub
Receiver
DC Power
(10-30V, 10A max)
Satellite In
Satellite In
RF1
RF2
#6 Mounting
Screw (x2)
Ground
Antenna
Receiver
AC Power
Receiver
AC Power
23
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