User Manual
Slam Stick User Manual
Version No. 2.0
32
the data should be a horizontal line with some scatter due to noise). This value is the
active offset of the DC accelerometer and analog accelerometer in both the X and Y
directions. The value measured should be on the order of ±0.01g for the DC accelerometer
(will be larger for the analog accelerometer).
6.
Confirm these values match the offset coefficients of the X and Y channels’ calibration
information. If the recorded value deviates from the coefficient value by an order of
magnitude or greater, click “Edit” as shown in Figure 12.
Figure 12: The calibration editing window enables the user to edit the calibration coefficients for every sub-
channel on the Slam Stick data logger.
7.
The coefficients window should display the coefficients for the DC channel, the top value
being the gain and the bottom value being the offset. If the offset value does not match
the value measured from the recording by the margin mentioned above, delete the offset
value displayed and enter the recorded value in its place.
NOTE:
If the user feels uncomfortable deciding the proper offset values, send the Slam
Stick in to
8.
The gain coefficient (i.e. the top coefficient in the window) should be within 5% of 1.0
(e.g. 0.95-1.05). If the gain coefficient is outside the mentioned range, set the gain
coefficient to 1.
