PNI FieldForce Trax - Manual (Page 14)

PNI Sensor Corporation DOC#1016505 r06
TRAX User Manual Page 10
method used for aircraft orientation, where the outputs are heading, pitch and roll. When
using Euler angles in aviation, roll is defined as the angle rotated around an axis through
the center of the fuselage, while pitch is rotation around an axis through the center of the
wings. These rotations are dependent on each other since the axes of rotation move with
the plane.
As shown in Figure 4-1, for the TRAX a positive pitch is when the front edge of the
board is rotated upward and a positive roll is when the right edge of the board is rotated
downward. The order of rotation is given as heading, pitch, and then roll.
Figure 4-1: Positive & Negative Roll and Pitch Definition
4.3.2 Mounting Orientation
The TRAX can be mounted in 16 different orientations, as shown for the enclosed
version of the TRAX in Figure 4-2. All reference points are based on the silk-screened
arrow on the cover of the enclosed version of the TRAX, or on top side of the TRAX
PCA board. The orientation should be programmed in the TRAX using the
Configuration Tab in TRAX Studio or using the kSetConfig command and the
kMountingRef setting in the PNI Protocol, as described in Section 7.4.2. The default
orientation is “STD 0°”.