Causes And Remedies For Common Operational Issues; Operational Issues - KVH Industries KVHTRACVISION G4 Technical Manual

TracVision G4 Technical Manual
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4.2 Causes and Remedies for
Common Operational Issues
There are a number of common issues that can affect the
performance of the TracVision G4. 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).
The ADCU is equipped with one fuse mounted on
its upper PCB. If any of these fuses has blown or
been broken, the system will not work. For details
on replacing an antenna unit fuse, refer to
Section 5.4, "Replacing the Main PCB and Fuses" on
page 106. For details on replacing the ADCU fuse,
refer to Section 4.3, "GyroTrac-specific Issues" on
page 97.
Low Power
If the power cable from the antenna unit to the
power source or ADCU 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 ADCU to
Vessel Power" on page 37 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 2.6, "Wiring the ADCU" on page 29 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 G4, 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 G4 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.
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