R5 SOLID AIS System
TROUBLESHOOTING
7000 118-200, C2 Page 58
$AIALR,hhmmss.ss,xxx,A,A,c-c: Tx malfunction: Alarm is Active and Acknowledged
$AIALR,hhmmss.ss,xxx,A,V,c-c: Tx malfunction: Alarm is Active and Unacknowledged
The alarms that can occur in the R5 SOLID are listed below:
7.3.1 AIS: Tx Malfunction (ID 001)
A Tx Malfunction alarm is generated if there is a malfunction in the radio transmitter
hardware or if the antenna VSWR exceeds an allowed ratio. If the radio transmitter
returns to normal operation or if VSWR returns to a value below the allowed threshold,
the alarm is cleared. The Tx Malfunction alarm is also generated when the MMSI is
configured to “0”, in which case the R5 SOLID will not transmit.
7.3.2 AIS: Antenna VSWR Exceeds limit (ID 002)
The VSWR (Voltage Standing Wave Ratio) of the antenna is checked for every
transmission and if it exceeds a given ratio then a VSWR alarm is generated. If the
VSWR goes below the allowed threshold, the alarm is cleared.
7.3.3 AIS: Rx Ch A Malfunction (ID 003)
7.3.4 AIS: Rx Ch B Malfunction (ID 004)
7.3.5 AIS: Rx Ch C Malfunction (ID 005)
The radio receivers are continuously monitored and if any part of the receivers’
hardware should malfunction, an Rx Malfunction alarm is generated for that receiver. If
the radio receiver returns to normal operation, the alarm is cleared.
7.3.6 AIS: General Failure (ID 006)
This alarm is generated if the R5 SOLID fails to initiate the radio or if a severe
hardware failure has occurred. If this alarm occurs, contact your retailer.
7.3.7 AIS: UTC Sync Invalid (ID 007)
This alarm is generated when the R5 SOLID loses UTC direct synchronization (cannot
synchronize from internal GPS receiver).
7.3.8 AIS: MKD connection lost (ID 008)
This alarm is active if the communication between the control unit and the display unit
in the R5 SOLID does not work.
7.3.9 AIS: Internal/External GNSS position mismatch (ID 009)
This alarm is generated if the difference between the internal and external GNSS
position is more than 100 m for more than 15 minutes.
7.3.10 AIS: NavStatus incorrect (ID 010)
This alarm is generated if the navigational status is incorrect. If e.g. the navigational
status is set to “At Anchor” but the ship is moving faster than 3 knots, the NavStatus
incorrect alarm will become active.
7.3.11 AIS: Heading sensor offset (ID 011)
This alarm is active when SOG (Speed Over Ground) is greater than 5 kn and the
difference between COG (Course Over Ground) and HDT (True Heading) is greater
than 45˚ for 5 min.
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