User guide

Charnwood Dynamics Ltd. Coda cx1 User Guide – Coda Basics I - 1
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However, for the special case with a multi-Coda set-up, where the markers defining the
co-ordinate axes are not visible to all Codas (i.e. the fields of view from each Coda unit do
not sufficiently overlap), then the alignment transforms must be generated using the Align
Multi-Coda system… command on the CODA menu.
This procedure requires the use of a simple alignment jig, manufactured by Charnwood
Dynamics, and is documented separately (Please call Charnwood Dynamics for further
details).
Using an Alignment Transform
The use of a (stored) alignment transform when displaying or acquiring marker co-
ordinates is determined in the Acquisition Setup dialog by the Co-ordinate Transform
selection (CODA menu: Acquisition Setup… command).
After creating and storing alignment transforms, the Co-ordinate Transform selection is
automatically set to ‘CodaAlignment’. This selection is stored in the Codamotion Analysis
Setup file (Setup: Save Setup…).
When Codamotion Analysis is started with an ‘Aligned’ multi-Coda configuration, the
stored transformation matrices are re-loaded and will be used automatically if the
Acquisition Setup specifies ‘CodaAlignment’ in the Co-ordinate Transform box. Data
acquisition is disabled if the ‘CodaAlignment’ transform is not selected or is unavailable
when using an ‘Aligned’ configuration.
Remember that the transform matrix will be invalid if any Coda unit has been moved.
There is no automatic warning of misalignment of Codas.