Saab R5 - Rx LED Interpretation; Tx LED Interpretation; Troubleshooting with Alarm Messages

R5 SOLID AIS System
TROUBLESHOOTING
7000 118-200, C2 Page 57
 The available current is sufficient for start up and transmission
 The external fuse is functional
 The power cable is undamaged
 The power connector is properly connected and secured
Also check so that the LED backlight is not completely turned off in the Visual Config
view accessed from Main Menu  Config  Display  Visual.
7.2.2 Rx LED (yellow)
The Rx LED is flashing yellow when the transponder is receiving a message from the
VDL. This can be intermittently.
If there is verified traffic on the VDL and the Rx LED still is dark, then check the alarm
list for any active alarms. Refer to section 7.3 for interpretation of the alarms.
Lack of reception may be an indication of a VHF antenna problem or connectivity
issues. Check the installation for problems.
7.2.3 Tx LED (red)
The Tx LED is flashing red when the transponder is transmitting a message to the VDL.
The transmission interval is between 2 – 360 seconds. Refer to section 7.5.
If the Tx LED is completely dark, then check so that the transmission is not switched off
either through an active regional area or by the Tx Mode parameter. It is possible to
check the status on each transceiver in the VHF Status view described in section 4.24.
If the transmission is activated and there is still no red flashing, then check the alarm
list for any active alarms. Refer to section 7.3 for interpretation of the alarms.
7.3 Troubleshooting with Alarm Messages
The R5 SOLID constantly monitors itself for failures, abnormal conditions and other
important parameters. Some of the monitoring trigger alarms and those alarms are
excellent aids in the troubleshooting process.
An active alarm can have two states, unacknowledged or acknowledged. The state of an
alarm will affect the STATUS LED. Refer to section 7.2.1.
A new alarm (unacknowledged) will raise a pop-up window that needs to be
acknowledged by the user. The active alarms can be found in the alarm view. Refer to
section 4.18.
All active alarms are outputted on all the serial interface ports every 30 seconds. The
alarm status can for example be used in interfacing ECDIS systems or centralized alarm
systems. The alarms can also be monitored or recorded for troubleshooting purposes by
for example a terminal application.
The status of an alarm can be identified by two letters in the alarm sentence, “A” and “V”.
The alarm sentence is constructed as: $AIALR,hhmmss.ss,xxx,A,A,c-c, where:
hhmmss.ss = Time (UTC) of alarm condition change
xxx = Unique alarm identifier
A = Alarm condition (A = Active, V = Inactive)
A = Alarm’s acknowledge state, A = acknowledged, V = unacknowledged
c-c = Alarm’s description text
$AIALR,hhmmss.ss,xxx,V,A,c-c: Tx malfunction: Alarm is Inactive
$AIALR,hhmmss.ss,xxx,V,V,c-c: Tx malfunction: Alarm is Inactive