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Wireless Sensor Networks
MTS/MDA Sensor Board User’s Manual
Table 5-1. Summary of ADXL202JE Specifications.
Channels
G-range
Bandwidth
Resolution
Sensitivity
Offset:
X (ADC3), Y (ADC4)
± 2 G (1 G = 9.81 m/s2)
DC-50 Hz (controlled by C20, C21)
2 mG (0.002 G) RMS
167 mV/G ±17 %
2.5 V ±0.4 V
; NOTE: The ADXL202 sensitivity and offset have a wide initial tolerance. A simple calibration using
earth’s gravitational field can greatly enhance the accuracy of the ADXL202 sensor. By rotating the
sensor into a +1 G and a –1 G position, the offset and sensitivity can be calculated to within 1 %.
5.4 TinyOS Test Firmware
A driver, a test and a mesh-networking firmware for the MTS510, and both a text and graphical
user-interface to view/save the data on a PC is available on the TinyOS Support Tools CDROM.
See Chapter 8 for details.
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