A sample C3D file from a Vicon system with 128 channels of analog data from 14 force plates
using 128 channels of analog data and a subject performing a test by applying a force to each
plate during the trial session.

06/14/2005  11:10 AM         2,730,944 128analogchannels.c3d

Note that the files have FORCE_PLATFORM:ORIGIN information with the force platform origin is
stored as a positive value, implying that the mechanical origin of the force plateform is
above the surface of the force plate.