MoTeC BR2 BTX - Manual (Page 16)

14 BR2 Beacon Receiver
LED
The LED on the front of the BR2 is used for the following purposes:
Power On
At power on the LED will turn on for about two seconds, indicating that power
has been connected.
The LED may also flash a couple of times immediately after power up but this
should stop after a few seconds.
Valid Beacon Signal
When the BR2 receives a valid beacon signal the LED will emit a short bright
flash. A beacon event signal is sent to the connected device when the LED
flashes. Note that the LED will continue to glow while receiving a valid beacon
signal.
The short bright flash is emitted once only as soon as the beacon signal is
recognised. It will not flash again until the beacon signal has been completely
removed and then reappears, or a different beacon signal is detected.
Note that when testing the beacon system with the vehicle stationary and in a
confined space it may be necessary to remove the transmitter power then
reapply it before the receiver LED will flash again. This is because the
transmitter signal can reflect off other objects so the receiver will not
recognise the transmitter signal as having stopped even when the transmitter
is pointing away from the receiver.
If the BR2 is configured for the CAN connection method then the LED will
flash for every beacon that it recognises including transmitters with a different
Mode and ID.
If the BR2 is configured for the Switched Output connection method then the
LED will only flash when it detects a transmitter with a matching Mode and ID.
Note that if the BR2 is configured for split beacons (ID = any ID) then the LED
will flash for any transmitter with the matching Mode and any ID.
Error Codes
The BR2 will emit an error code if it has a serious problem. The error codes
are in the form of a number of flashes followed by a pause. The number of
flashes indicates which error has occurred. See Appendix E – BR2 LED Error
Codes for details.