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Transport Data Logger | TDL 110
5.5 Blinking Pattern
The TDL is equipped with a two-color LED to indicate the status of the TDL.
Color
Behavior
Meaning
Triggered by
Mobile App
Device
Blinks 3 times green
(2 Hz)
TDL starts logging
Tap “Start Logging”
After transferring the
configuration push the
button for 2 to 5 s
TDL continues logging
Tap “Disconnect” while
logging
Blinks 3 times red
(2 Hz)
TDL does not start
logging
Tap “Disconnect” while
not logging
TDL has been reset
Tap “Reset”
Blinks 3 times green
(10 Hz)
Configuration transmis-
sion or change setup
has been successful
Transfer a configuration or
changed setup to the TDL
Blinks 3 times red
(10 Hz)
Configuration trans-
mission or change
setup has failed
Transfer a configuration or
changed setup to the TDL
Possible reasons: Vibra-
tions or a bad Bluetooth
connectivity
Blinks reiteratively
green (0.2 Hz)
Bluetooth is enabled,
either connection or
advertising
Push the button for 0.3
to 1.5 s
Lights up green for
3 s
No violation has been
registered
Push the button for 0.3
to 1.5 s
Lights up red for 3 s
One or more violations
have been registered
Push the button for 0.3
to 1.5 s
Lights up red for 1 s
Invalid operation,
Bluetooth connection
is already established
Any button press
Invalid operation, TDL
is not ready to start
logging or is already
logging
Button press for 2 to 5 s
Blinks 5 times
red/green (10 Hz)
TDL starts up after
battery change
Change of battery
Table 6: Blinking Pattern
Figure 13: LED on the TDL
