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Operation
3.12 Handling alarms
The transceiver performs self checking functions continuously. If a self check fails an alarm will occur. Possible
alarm conditions are listed in Table 2.
Alarm condition
Transmitter malfunction
Antenna VSWR exceeds limit
Receiver channel x malfunc-
tion
External EPFS lost
No sensor position in use
No valid COG information
No valid SOG information
Heading lost or invalid
No valid ROT information
Table 2
Alarm conditions
A new alarm will be indicated by display of the alarm notification screen (see Figure 16). The alarm icon in the
status bar will flash whilst an alarm is active and not acknowledged by the user.
Figure 16 Alarm notification screen
Page 18
Description
This alarm can occur if there is a fault with the transmitter or if
the antenna VSWR exceeds allowable limits. The alarm will be
cleared if the transmitter recovers normal operation or the VSWR
measurement returns to an allowable value. If this alarm condi-
tion persists contact your dealer or installer.
This alarm condition can occur if the VSWR (Voltage Standing
Wave Ratio) of the AIS antenna exceeds pre-defined limits. This
alarm is cleared if the VSWR returns to an allowable value. If this
alarm condition persists contact your dealer or installer.
This alarm occurs should the receiver hardware malfunction. The
receiver is identified by the value of x. If the receiver returns to
normal operation this alarm will be cleared. If this alarm condition
persists contact your dealer or installer.
This alarm occurs if the position from the external Electronic
Position Fixing System (i.e. GNSS) is invalid or lost.
This alarm occurs if the transceiver has no valid position informa-
tion from any connected sensor.
This alarm occurs if the transceiver has no valid Course Over
Ground information from any connected sensor.
This alarm occurs if the transceiver has no valid Speed Over
Ground information from any connected sensor.
This alarm occurs if the transceiver has no valid heading infor-
mation from any connected sensor, or if the heading is unde-
fined.
This alarm occurs if the transceiver has no Rate Of Turn informa-
tion from connected sensors or via internal calculation.
13:20:47
OK
ALARM NOTIFICATION:
ID
ALARM
35:
No valid ROT information
32:
Heading lost/invalid
25:
Ex ternal EPFS lost
Goto List
INT
GPS
Ack
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