User Manual

7 Xsens Peripheral Software

7.1 Magnetic Field Mapper (MFM)

When an MTw is mounted to an object that contains ferromagnetic materials, the measured

(Earth) magnetic field can become distorted, causing errors in measured orientation. To

correct for known magnetic disturbances, for example, an MTw attached to a steel

prosthesis, a separate software product has been developed to allow users to remap the

magnetic field of the MTw. This software is called Magnetic Field Mapper (MFM) and is

located in the installation file of MT Manager. In this directory is also a user manual for

instructions on how to execute MFM, in terms of software steps and how to orientate the

MTw during the process. The user manual for the MFM is generic since it is useful for all

Xsens products.

First create a wireless connection for the given MTw (see Section 6.4.2, but pay particular

attention to the instructions below):

Note: MFM can be run for one MTw at a time. Therefore for each MTw that should be

mapped, use the following instructions, 1-3 depends on user preference, 4-10 applies to

both methods of choice.

In MT Manager do the following:

Power off unnecessary MTw’s

Wirelessly reject unnecessary MTw’s

Dock all MTw’s

Undock all MTw’s

Power off all but one MTw in the device

list

Wireless configuration

Wireless configuration for remaining MTw

Reject all but one MTw

Set update rate to 100Hz

Start Measuring

Close MT Manager

Activate MFM

Follow instructions for MFM

Close MFM

Repeat above for remaining MTw’s to be mapped.

7.2 Firmware Updater

With new software releases, it can be expected that new firmware is required for the

Awinda Station, Awinda USB Dongle and MTw’s. Xsens supplies a firmware updater. The

firmware updater is found in START> All Programs > Xsens > Firmware Updater.