ActiGraph ACTITRAINER Uživatelský manuál stáhnout pdf (Strana 21)

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15 W. Main St. Pensacola, FL 32502 tel 850.332-7900 fax 850-332-7904

Sample Rate (Hz)

Active Recording Time (Days)

Memory Limit (Days)

14.06

21.35

12.84

16.01

11.50

12.81

9.82

10.68

9.85

9.15

9.23

8.01

7.71

7.12

100

7.54

6.41

Table 5 – Active Mode Battery Life after a 10 day Delay Mode period.

Low Voltage Mode (HALT)

ActiGraph devices enter a “Low Voltage Mode” (or HALT) state when the battery discharges to 3.1V during normal

operation. This mode helps ensure that all accelerometer data is consistent across the discharge profile of the battery

by stopping all data collection before the accelerometer reference voltage of 3.0V is reached. In this mode, all

important variables are stored in flash memory so as to secure the device download.

Because the device’s internal clock stops in HALT mode, the device cannot be recharged and redeployed. The device

must be downloaded and reinitialized to continue use. ActiTrainer devices will display a “HALT” symbol on the OLED

display. Other devices will flash the LED three times to indicate the HALT (low voltage) state.

Impact of Multiple Modes on Battery Life for non-GT3X+ Devices

Unlike the GT3X+, the ASM, GT3X, and ActiTrainer devices filter and accumulate raw data on the device itself (see

Raw

Data section). Although each device is capable of collecting multiple data channels, selection of those items must occur

at the time of initialization and cannot be selected during post processing. Adding other parameters to the data

collection does impact the battery life somewhat. The impact on battery life varies by device model due to the specific

battery capacity. Below is a quick break down on the effect of having all three axes turned on versus just the single axis.

ASM: from 8 to 5 days

GT3X: from 20 to 15 days

ActiTrainer: from 19 to 14 days

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ActiGraph ACTITRAINER Uživatelský manuál Strana 21