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On top of the sensor is the LED giving the indications of sensor states. There is a power
button in the middle of the sensor to wake up, stop recording or power off sensor. The
micro-USB port at the bottom can be used to power on and charge the sensor.
NOTES:
•
Sensor will always reboot when plugged in with a powered USB cable, no matter it
is ON or OFF.
2.2.2
Power button
Table 1 shows the functions of the power button.
Table 1: Power button function
Function
Power button pattern
Power OFF sensor
Long press over 3 seconds
Stop recording
Press for 1 second
Wake the sensor from power saving mode
Single press the button
Button callback function
If there is a single click on the power button during connection, a BLE notification will be
sent with a timestamp when this single click is applied.
This function is called “Button
callback”.
This is available in the Xsens DOT SDK or in the BLE Service Specifications
manual. Refer to those for additional information on the button callback.
2.2.3
LED status
Xsens DOT sensor has LED patterns to indicate different sensor states. Table 2 shows the
LED behaviors.
Table 2: LED patterns
State
LED Pattern
Power
ON/OFF
Powered off or power-saving mode
OFF
Sensor is being powered off
On for 1 second and fade out in 3
seconds
Measurement Advertisement mode
Blink 1 time per second
Connection mode (not measuring)
Blink 1 time every 10 seconds
Real-time streaming mode
Blink 2 times every 10 seconds
Recording mode (including record,
export and clear data)
Fast blink 2 times and a short pause
Synchronization
OFF during sync period, all sensors
blink synchronously for 3 second if
sync succeeds.
Charging
Charging (battery full)
ON
Charging (75% <= battery < 100%)
Fade in/out, 4-second cycle
Charging (50% <= battery < 75%)
Fade in/out, 3-second cycle
Charging (25% <= battery < 50%)
Fade in/out, 2-second cycle
Charging (battery < 25%)
Fade in/out, 1-second cycle
Other states
Identifying sensor
Fast blink 8 times and a short pause