PNI FieldForce Trax - Manual (Page 37)

PNI Sensor Corporation DOC#1016505 r06
TRAX User Manual Page 33
to place it in Compass Mode. Specifically, it is necessary to calibrate the TRAX in
Compass Mode. (This is handled automatically in TRAX Studio, so it is not
necessary for the user to place the TRAX in Compass Mode when doing a calibration
in TRAX Studio.) Also, it may be beneficial to operate in Compass Mode to
conserve battery life, since in Compass Mode the TRAX turns off the gyros,
generally uses less CPU power, and can be placed in Sleep Mode to significantly
reduce current consumption.
Truth Method
This field allows the user to have control over the breadth of criteria used to establish
if the local magnetic field conforms to the reference magnetic field criteria. “Auto” is
the default.
Reference Field Reset
Clicking the Reference Field button re-establishes the criteria for a clean
magnetic field. After clicking this button the Heading Status box will go green.
Assuming an accurate heading reading is desired, this should be done only when the user
is confident the local magnetic field is free from distortions. For the purpose of
demonstrating the general capabilities of the TRAX a distortion-free local magnetic field
may not be required, but the user should realize the heading reading likely will not meet
the accuracy specification.
6.7 Log Data Tab
TRAX Studio can capture measurement data and then export it to a text file.