ActiGraph LLC 03 Manual Do Utilizador
actigraphcorp.com
49 E. Chase Street Pensacola, FL 32502
tel (850) 332-7900
fax (850) 332-7904
TAS14DOC07 User’s Manual
Page 10 of 21
Introduction
The ActiGraph Link activity monitors provide objective measurements of human activity and are used in
many research and clinical applications. They include a microelectromechanical system (MEMS) based
accelerometer, gyroscope, magnetometer, and a capacitive touch based wear sensor as data collection
end points. No formal training is required to use the ActiGraph Link and patients may be the intended
operator. This document will serve as the only necessary training guide needed to get full functionality
from the device.
many research and clinical applications. They include a microelectromechanical system (MEMS) based
accelerometer, gyroscope, magnetometer, and a capacitive touch based wear sensor as data collection
end points. No formal training is required to use the ActiGraph Link and patients may be the intended
operator. This document will serve as the only necessary training guide needed to get full functionality
from the device.
Specifications and Functionality of the ActiGraph Link
Data
The Link includes two accelerometers, gyroscope, and magnetometer sensors. Data will not be
negatively affected by lint, dust, or direct sunlight.
negatively affected by lint, dust, or direct sunlight.
Acceleration
Acceleration is measured by two accelerometers; a primary that is utilized for all historical and standard
data collection efforts and a secondary which is used in very specific use cases where a higher dynamic
range is necessary.
data collection efforts and a secondary which is used in very specific use cases where a higher dynamic
range is necessary.
Parameter
Primary
Secondary Units
Axis
3
3
Sensitivity
0.5
4
mg/LSB
Dynamic Range
+/-16
+/- 8
g
Table 1 – Accelerometer Key Specifications
Acceleration data from the primary sensor is sampled at rates ranging from 30 Hz to 100 Hz (user
selectable) and the secondary accelerometer data is sampled at a fixed 100 Hz. Output from both
devices are stored in a raw, non-filtered/accumulated format in the units of gravity (g’s). This data is
stored directly into a non-volatile flash memory. The accelerometer is very sensitive and is accurate
within +/- 0.5% of the data collected.
selectable) and the secondary accelerometer data is sampled at a fixed 100 Hz. Output from both
devices are stored in a raw, non-filtered/accumulated format in the units of gravity (g’s). This data is
stored directly into a non-volatile flash memory. The accelerometer is very sensitive and is accurate
within +/- 0.5% of the data collected.
Gyroscope
A three axis gyroscope collects angular velocity in units of degrees/sec. Data is sampled at 100 Hz.
Parameter
Value
Units
Axis
3
Sensitivity
0.06
Deg/LSB