AFDAU-T1 Aerial Firefighting
Data Acquisition Unit
Installation Manual
AMS-IM-1-01 Rev. 7
22 September 2021
40
Troubleshooting
FAULT DESCRIPTION
CAUSE
RECTIFICATION
No event messages of any type are
being shown on TracPlus Pro 3, or
Apple and Android TracPlus App.
1. Configuration of the AFDAU-T1
or Modem Device is incorrect.
2. Serial RS232 wiring between the
AFDAU-T1 and Modem Device
is not connected correctly
1. Check wiring between the
AFDAU-T1 and Modem
Device
2. Ensure AFDAU-T1 is
configured for the correct
Modem Type and RS232
Port
3. Ensure the modem
’s serial
RS232 port is properly
configured (refer Section
4.5.3).
Drop messages are not display on
the Apple and Android TracPlus
App.
At this time, the drop messages will
only display on the TracPlus Pro 3
desktop app.
1. Use the TracPlus Pro 3
desktop app to view the
drop messages.
The Power (Green) LED light does
not light up when powered on.
Internal power supply circuit is not
getting a regulated 5VDC.
1. Ensure that 14-28VDC is
available on Pin 1 of P1
Main Connector
2. Ensure that airframe ground
is available on Pin 20 of P1
Main Connector
3. If steps 1-2 above are OK,
there is an internal fault in
the AFDAU-T1. Contact
AMS for repair.
The Status (Amber) light is always
on steady (remains on for more than
1 minute)
The unit is not progressing through
the bootloader stage.
1. Reset power to the unit.
2. An internal fault has
occurred in the AFDAU-T1.
Contact AMS for repair.
The Status (Amber) light is not on.
The Power (Green) light is on.
The unit has an internal fault
1. An internal fault has
occurred in the AFDAU-T1.
Contact AMS for repair.
The Status (Amber) light is flashing
in a heartbeat pattern (flash-flash-
pause)
The unit has a configuration fault
(modem not configured or corrupt
configuration file).
1. Use the AFDAU Config Tool
to write a new configuration
file to the AFDAU-T1. Make
sure a modem (RockAIR or
v2track) is assigned to a
serial port.
