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4.1.4 Radar Interference
The energy levels radiated by radar units can overload the
antenna front-end circuits. Refer to Section 2.1, “Choosing the Best
Location and Getting the Best Reception,” to make certain that the
TracVision 4 unit is in the optimal location with regard to your
radar unit.
4.1.5 Vessel Turning During Startup
If the vessel turns during the 60-second startup and
initialization sequence that occurs immediately after turning
on the power to the TracVision 4 unit, the antenna gyro will
record that variable motion as “standing still.” This may cause
the antenna to track improperly. To solve this problem, turn
TracVision 4 off for at least 10 seconds. Turn the system back
on, making certain that the vessel is either motionless or
travelling in a straight line for the 60 seconds immediately
following power-up.
4.1.6 Incorrect or Loose RF Connectors
As part of preventive maintenance (described in Section 5,
“Maintenance,”) KVH recommends checking the Antenna Unit
cable connections. A loose RF connector can reduce the signal
quality. Refer to Section 2.3.5, “Connecting the Antenna RF Signal
Cable to the IRD” for directions on proper Antenna Unit to
RF cabling.
4.1.7 Using a Passive Multiswitch
An active multiswitch must always be used to connect the
TracVision 4 system to multiple IRDs. Refer to Section 2.3.5,
“Connecting the Antenna RF Signal Cable to the IRD” for
directions on proper multiswitch/multiple IRD cabling.
4-3
Troubleshooting
54-0150 Rev. D
Baseline RF levels are included as
part of the startup sequence
provided in Appendix F.