Connect Power - KVH Industries TV3 Installation Manual

15

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. Single-cable systems are grounded by the TV-
Hub grounding wire. Connect the hoop of the
grounding wire (supplied in the kit) to the
"Ground" screw on the rear of the TV-Hub.
b. Connect the other end of the grounding wire
to ship's ground.
c. For the dual linear LNB system, connect the
two RF cables to a grounding block (supplied
in the kit). Attach the supplied ground wire
to ship's ground, and, using the two #6
screws supplied with the grounding block,
mount the block inside the vessel (see
Figure 35).
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 35: Grounding Block Example
Grounding Block
Deck
TV-Hub
DC Power
(10-30V, 10A max)
Satellite In
Satellite In
RF1
RF2
#6 Mounting
Screw (x2)
Antenna
Receiver
Receiver
AC Power
Receiver
AC Power
21