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15 W. Main St. Pensacola, FL 32502 tel 850.332-7900 fax 850-332-7904
ActiGraph GT1M/ASM/GT3X Connected to PC
1 Flash
Li-Ion Battery is Charging
2 Flashes
Li-Ion Battery is Faulty
Steady On
Battery Charged
ActiGraph GT1M/ASM/GT3X Not Connected to PC
Not Flashing
(LED Off)
Actively collecting data (“Flash Mode” Disabled) or dead battery
1 Flash
-
Delay before start mode (the LED always flashes prior to starting data collection)
-
Actively taking data ("Flash Mode" Enabled – not recommended)
2 Flashes
Low Battery (use ActiLife Lifestyle software to check for remaining battery life) The
unit needs to be recharged
3 Flashes
-
End of memory reached (Device no longer collecting data)
- Battery has fallen below 3.1V and the unit has entered Halt mode (unit has
stopped collecting data
Note: The LED will ALWAYS flash to indicate LOW BATTERY regardless of whether "Flash Mode" is enabled or
disabled. If a “stop time” (optional) has been reached, the LED will stop flashing all together regardless of its
previous state.
Table 7 – GT1M/GT3X/ASM LED Reference Table
Low Power Modes
All ActiGraph activity monitors support a low-power mode (LPM) in which the device automatically reduces power
during periods of sedentary activity. LPM is activated when the unit records no activity for 60 seconds (every 10 seconds
for the GT3X+ product). The device’s power consumption in LPM is reduced significantly and can extend the battery
charge life of the unit by approximately 15% if the unit is left untouched
4
. Upon entering LPM, the device will “wake up”
every second (1000 milliseconds) and check for movement in the X and Y direction. If any movement is detected, LPM is
switched off and the unit resumes normal operation. At this time, there is no way to disable this feature.
4
15% battery charge life is subject to change based on firmware updates as improvements are constantly being made to enhance the
battery life of the devices.
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