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Evaluation Board User Guide
SENSITIVITY CHECK PANEL
The last panel (see Figure 24) provides a method for checking
the approximate sensitivity of a given device. The data sheet
specification for sensitivity is 80 ± 3% LSBs/°/sec. This panel is
designed to use the nominal sensitivity to calculate the angle of
rotation experienced by the satellite board. If you have access to
a firmly rooted straight edge, you can use the Sensitivity Check
panel as follows:
1.
Place a flat edge of the satellite board firmly against the
stable straight edge.
2.
Click the Perform Sensitivity Check button. Do not rotate
the satellite board until instructed by the evaluation GUI.
The software must perform an initial calibration step to
accurately calculate the angle of rotation.
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Figure 24. Sensitivity Check Panel
3.
When prompted, slowly rotate the satellite board through
180° (90° can also be used). Because the satellite board is
approximately square, as each adjacent side is brought flush
with the straight edge, 90° of rotation is experienced. After
the gyro graphic in the GUI rotates through 180°, the
measurement stops.
4.
If you finish rotating the device before completion of the
measurement, firmly hold the satellite board against the
straight edge to ensure that no additional rotation is
applied to the device.
At the completion of the measurement, the angle through
which the satellite board was rotated should appear in the GUI.
This measurement should be considered approximate because
error sources incurred during the angle integration can alter the
results.
Rev. 0 | Page 15 of 20
UG-260
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