3.
USB backboard use
3.1.
LED Indication
3.1.1.
Normal operation
Three LED indicators are present on the USB backboard, and are visible through the
back side of the yellow plastic case.
Table 4 - LED indicators of the USB backboard
LED designator
Description
PWR (ORANGE)
The Power LED is ON whenever the sensor is powered
RED
Flashes briefly on startup to indicate proper initialization;
then switches off
GREEN
Blinks 8 times at power up.
GREEN LED blinks every 5 seconds when the sensor is streaming
data
3.1.2.
Error messages and troubleshooting
Table 5 - USB backboard LEDs troubleshooting
LED
designator
Sequence
Signification
Corrective actions
RED
Continuous
blinking
Sensor has detected a fault
and has stopped functioning
Check that the sensor is
properly connected to the
backboard, then restart
the sensor
RED /
GREEN
Both LEDs
blinking
continuously
Sensor has detected a fault in
the
sensor
initialization
process
Check USB output for
details of Error
Verify that the sensor is
properly connected and
re-power the unit
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