USB Accelerometer Model X16-1C
3.2.4.1
deadband
“deadband” defines the minimum difference between recorded sensor readings. A new sample from
the accelerometer sensor must exceed the previous recorded reading before the microcontroller records
the data. The deadband setting is expressed in "counts" units and is applied to the output of each axis.
There are 1024 counts per g. The deadband value can be set to an integer between 0 and 32767. The
deadband function is an effective way to reduce the amount of data collected and extend the system
battery life. The deadband functions as a event threshold limit when used in conjunction with the
“dwell” feature.
Figure 4: Graphical Illustration of the Deadband Feature
3.2.4.2
deadbandtimeout
“deadbandtimeout” defines the period in seconds when a sample is recorded by the device regardless
of the deadband setting. This feature ensures periodic data is recorded during extended periods of
inactivity. A valid setting for the deadbandtimeout is an integer between 0 and 65535.
3.2.4.3
dwell
The “dwell” tag defines the number of consecutive samples recorded at the set sample rate after a
deadband threshold event. The deadband threshold event occurs when a sensor reading exceeds the
last recorded value by the deadband setting. A valid dwell setting is an integer between 0 and 65535.
January 2012 Rev New
6 of 14
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