KVH Industries TracVision 4 - Manual (Page 46)

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TracVision 4 Technical Manual
3.2 Causes and Remedies for
Common Operational Issues
There are a number of common issues that can affect the
performance of the TracVision 4. The following sections address
these issues and potential solutions.
Blown Fuse, Low Power, or Improper Wiring
Blown Fuse
The antenna unit is equipped with two fuses
mounted on its main printed circuit board (PCB).
If either of these fuses has blown or been broken,
the system will not work. For details on replacing
an antenna unit fuse, refer to Section 4.4, “Replacing
the Main PCB and Fuses” on page 54.
Low Power
If the power cable to the antenna unit is more than
50 ft (15 m) long, the power level can decrease
over the course of the cable, resulting in a voltage
level at the antenna unit that is too low to power
the system. Refer to “Connecting the Switchplate to
Vessel Power” on page 24 for details on supplying
adequate power to the antenna unit.
Wiring
If the system has been improperly wired, the
antenna unit will not operate correctly. Refer to
Section 2.4, “Wiring the Switchplate” on page 22 for
complete system wiring information.
Vessel Turning During Startup
If the vessel turns during the 60-second startup sequence that
occurs immediately after turning on the power to the
TracVision 4, the antenna gyro will record that variable motion
as “standing still.” This may cause the antenna to track
improperly. To solve this problem, turn the TracVision 4 off for
at least 10 seconds. Turn the system back on, ensuring that the
vessel is either motionless or traveling in a straight line for the
60 seconds immediately following power-up.