User's Manual

Document MV0319P.N
© Xsens Technologies B.V.
MVN User Manual
39
7.8.3 MVN Awinda: Changing Radio Channel
In the Hardware Status window, either right click or double click the number under the letters “Ch”.
A small menu appears providing the option to change radio channel, reject unused trackers or
“forget” system.
In general, when working in an environment known to have a lot of WiFi traffic, it is best to select
channel 11, 15, 20 or 25. See Section 19.12.1 for background information.
7.8.4 MVN Awinda: Reject Unused Trackers
Again, in the Hardware Status window, either right click or double click the number under the letters
“Ch”.
From the small menu it is possible to reject unused trackers. It is possible that the MTw is powered
on, but not needed for a particular session. This is particularly useful for owners of multiple Awinda
Systems where an MTw is detected by one Awinda Station but is needed at another. To remove
detected trackers, either select the “reject unused trackers” or double click anywhere on the row
the tracker appears in and select “Reject on Master ********”. If this was done accidentally of you
want to accept a new tracker, simply double click again and select “Accept on Master ********”.
7.8.5 MVN Awinda: Forget System
To explain the use of the command forget system it is first useful to understand how MVN Studio deals
with connection. For single person capture, the information in the hardware status window tends to
always be the same tracker/master information. However it may change depending on: different suit
configurations and whether or not props are used. Additionally, some institutes may have multiple suits
within radio contact of each other, each measuring one subject. For this latter usage and for the purpose
of multi-person capture (multiple suits connecting to one MVN Studio instance), MVN Studio actively
remembers which motion trackers have connected to which master (Awinda Station or Body Pack). The
result is that when the user attempts to connect the trackers to the same master at a later time, MVN
studio only allows the remembered trackers to connect. This ensures efficient connections for always
using the same suit configuration and prevents unwanted connections between masters and trackers.
Again, in the Hardware Status window, either right click or double click the number under the letters
“Ch”.
If a user attempts to make a connection in an existing configuration between an Awinda Station and
a tracker used for the first time the option “Forget System” should first be selected. After this
command, all trackers (including previously rejected ones) can connect again.
When all devices necessary for the suit configuration are detected, the 3D character will appear in the
3D viewport.
Ensure that the filename and directory are correct; then click apply to proceed. See section 8.
7.9 Props
In addition to the normal suit configuration, additional MT’s can be attached to items to be measured in
a recording, for example a sword, or a walking stick. These items to be measured are called “Props”
and the motion tracker (MTw or MTx) attached to them are “Prop Trackers”. A prop can be tracked by
attaching a prop sensor to one of the free connectors on the hands.