PNI TCM 5 - Manual (Page 25)

PNI Sensor Corporation Doc #1007537 r12
TCM3 & TCM5 User Manual – Sept 2012 Page 25
4.2.4 Recommended Calibration Procedure For Taking The Minimum
Number Of Sample Points
This procedure provides instructions for performing a user calibration of the TCM 3/5/5L family of modules
using the TCMStudio application and demo cable. All of the TCMStudio application functions are
available in the TCM unit’s binary protocol allowing for this procedure to be translated into a user’s
imbedded solution. The scope of this procedure covers the calibration process only, for connecting to the
unit or other issues refer to the quick start guide or users manual. This calibration sequence
demonstrates a good distribution of the minimum sample points, additional points may be added.
1) With the TCM module connected and communicating with TCMStudio, go to the configuration
page.
2) Configure the unit as follows:
In the Filter Settings window set Taps to 32
Calibration Settings: Select Stability Checking check box
Select Automatic Sampling
Choose Calibration points: 12
3) Press the Save button.
4) Go to the calibration page.
Note: Once you begin taking calibration points, pausing between desired calibration points will cause
unintentional points to be taken with auto sampling enabled.
You will move the module to the following positions noting that these are not absolute heading
directs but rather approximate heading changes referenced to your first heading sample. You
do not need to know which way north is. The following 12 samples points will be taken:
Module with slight pitch (-5° to +5°)

0° yaw with 10°-20° positive roll (initial starting position)

90° yaw with 10°-20° negative roll

180° yaw with 10°-20° positive roll

270° yaw with 10°-20° negative roll
Module with large positive pitch (>+45°)

30° with 10°-20° positive roll

120° with 10°-20° negative roll

210° with 10°-20° positive roll

300° with 10°-20° negative roll