Filter
Top Products
Y1-03-0211 Rev D 90
5.2 Alarm Codes
ID
Description Text
Cause/Source
System Reaction / Remedy
01
AIS: Tx malfunction
VHF Antenna,
cabling
Reaction: The transponder unit stops transmission. If Alarm ID 01 and ID 02
are simultaneously displayed, then a major antenna problem has arisen.
Remedy:
Check if the antenna is AIS compatible (156-162 MHz) and if the antenna
cabling has a short circuit or is missing any contacts at the connectors.
If the ID 01 is displayed as a stand alone message, then the unit requires
replacing.
02
AIS: Antenna VSWR
exceeds limit (VSWR -
Voltage Standing Wave
Ratio)
VHF antenna,
installation
Reaction: The transponder unit continues transmission.
Remedy:
Check the antenna and the antenna cabling (RG214 / 50 Ohm cable
required).
03
AIS: Rx channel 1
malfunction
Internal error
Reaction: The transponder unit stops transmission on the affected channel,
Remedy;
If this alarm reoccurs regularly, then the transponder unit requires replacing.
04
AIS; Rx channel 2
malfunction
05
AIS: Rx channel 70
malfunction
06
AIS: General failure
Internal error
Reaction: The transponder unit stops transmission.
Remedy;
The transponder unit requires replacing.
25
AIS; External EPFS lost
(EPFS = Electronic
Position Fixing System
such as GPS)
No valid data on
Ch1, Ch2 or Ch3
is available
Reaction: The transponder unit continues operation using the position data of
the internal GPS. If there is no valid position data available from the internal
GPS, error 026 is additionally displayed.
Remedy:
Id 25 indicates that the sentences GLL, GNS, GGA, RMC cannot be received.
Check the sensor and the cabling; check if the system that delivers the data is
working. Check the baud rate settings of the sensor inputs. AIS requires the
protocol NMEA 0183 V3.0! Normally Inland Vessels have no external
EPFS no action required!
26
AIS: No sensor position
in use
No valid position
from internal GPS
or external
position sensor
Reaction: The transponder unit continues operation.
Remedy:
Check the sensor cabling and the antenna of the internal GPS sensor.
29
AIS: No valid SOG
information
No valid data from
external speed
sensor or internal
GPS
Reaction: The transponder unit continues operation and displays SOG: N/A
Remedy:
The sentences VBW, VTG, RMC cannot be received. Check the sensor and
the cabling; check if the system that delivers the data is working. Check the
baud rate settings of the sensor inputs. AIS requires the protocol NMEA 0183
V3.0!
30
AIS: No valid COG
Information
No valid data from
external sensor or
internal GPS
Reaction: The transponder unit continues operation and displays COG: N/A
Remedy:
The sentences VBW, VTG, RMC cannot be received. Check the sensor and
the cabling, check if the system that delivers the data is working. Check the
baud rate settings of the sensor inputs. AIS requires the protocol NMEA 0183
V3.0!
32
AIS: Heading lost/invalid
No valid data from
external sensor
(Gyrocompass)
Reaction: The transponder unit continues operation
Remedy:
The sentence for HDT cannot be received. Check the sensor and the cabling,
check if the system that delivers the data is working. Check the baud rate
settings of the sensor inputs. Mention AIS accepts true heading only (no
magnetic). Normally Inland Vessels have no Gyrocompass no action
required!
35
AIS: No valid ROT
Information
No ROT indicator
is used.
No valid data from
external sensor
Reaction: The transponder unit continues operation
Remedy:
The sentence for ROT cannot be received. If a Rate Of Turn indicator is not in
use, then it suffices to just acknowledge the alarm. The Alarm Status will store
the information that no ROT sensor is available. Otherwise, check the sensor
and the cabling. Check if the system that delivers the data is working. Check
the baud rate settings of the sensor inputs. The AIS requires the protocol
NMEA 0183 V3.0! Normally Inland Vessels have no ROT indicator no
action required!
53
AIS: BATTERY SOON
LOW
Battery is soon
out of capacity
Reaction: Own ship data is lost after powering on/off the system.
Remedy: consider to contact Technical Support for additional help
55
AIS: PRESS ENTER TO
EXIT 1W/AUTO TX
MODE
Conditions for
enabling 1 Watt
TX power are not
valid
Reaction: Conditions for enabling 1 Watt TX power are not valid.
This means that:
the speed is >3kn and / or
the navigational status is NOT moored / at anchor and / or
Remedy:
Check the conditions (SOG, Navstat, Shiptype)
if GPS is valid ( a invalid GPS causes also this alarm)