Manual

PNI Sensor Corporation DOC#1014688 r06
TCM User Manual – July 2013 Page 17
Table 5-3: 12 Point 2D Calibration Pattern
Sample #
Yaw
Pitch
1
Roll
1
1
0°
0°
0°
2
30°
max. negative
max. negative
3
60°
0°
0°
4
90°
max. positive
max. positive
5
120°
0°
0°
6
150°
max. negative
max. negative
7
180°
0°
0°
8
210°
max. positive
max. positive
9
240°
0°
0°
10
270°
max. negative
max. negative
11
300°
0°
0°
12
330°
max. positive
max. positive
Footnote:
1. For best results, the tilt experienced during calibration should match that experienced
in service. For example, if the TCM is restrained to a level plane in service, then
calibration should be in a plane, where “max. positive” and “max. negative” are 0°.
5.1.3 Limited Tilt Range Calibration
A Limited Tilt Range Calibration is recommended when 45° of tilt isn’t feasible, but >5°
of tilt is possible. It provides both hard-iron and softiron distortion correction. The
recommended 12 point calibration pattern given below is a series of 3 circles of evenly
spaced points, with as much tilt variation as expected during use.
Table 5-4: 12 Point Limited-Tilt Calibration Pattern
Sample #
Yaw
Pitch
Roll
First Circle
1
0°
0°
0°
2
90°
0°
0°
3
180°
0°
0°
6
270°
0°
0°
Second Circle
7
45°
> +5°
> +5°
8
135°
> +5°
> +5°
11
225°
> +5°
> +5°
12
315°
> +5°
> +5°
Third Circle
13
45°
< -5°
< -5°
14
135°
< -5°
< -5°
17
225°
< -5°
< -5°
18
315°
< -5°
< -5°