Raymarine UK Ltd. AIS500 Manuel D’Utilisation
18
Problem
Possible cause
Solution
Active alarm shown:
VHF Antenna VSWR fault
VHF Antenna VSWR fault
The VHF antenna is not
connected or is not suitable for
use with the AIS
connected or is not suitable for
use with the AIS
Check the VHF antenna
connections.
Check the AIS installation
manual against the specification
of your VHF antenna
connections.
Check the AIS installation
manual against the specification
of your VHF antenna
Active alarm shown:
12V Power supply fault
12V Power supply fault
The power supply to the AIS is
outside the specified range.
outside the specified range.
Check the power supply voltage
to the AIS against that specified
in the installation manual.
to the AIS against that specified
in the installation manual.
Active alarm shown:
Channel A Noise fault OR
Channel B Noise fault
Channel A Noise fault OR
Channel B Noise fault
The AIS cannot transmit
because the background noise
level is too high
because the background noise
level is too high
Check the VHF antenna
connections.
Check the AIS installation
manual against the specification
of your VHF antenna.
In very busy shipping channels
this alarm may appear
temporarily. This is normal
operation for Class B AIS.
connections.
Check the AIS installation
manual against the specification
of your VHF antenna.
In very busy shipping channels
this alarm may appear
temporarily. This is normal
operation for Class B AIS.
Active alarm shown with
message not listed here
message not listed here
The VHF antenna is not
connected or is not suitable for
use with the AIS.
AIS has an internal fault.
connected or is not suitable for
use with the AIS.
AIS has an internal fault.
Check the VHF antenna
connections.
Check the AIS installation
manual against the specification
of your VHF antenna.
Please contact your dealer.
connections.
Check the AIS installation
manual against the specification
of your VHF antenna.
Please contact your dealer.