Vinten Radamec Free-d - Manual (Page 20)

Vinten Broadcast Ltd free - d ™ Installation Manual V1.4.4
Page 20 of 46
The file lom1.bat can be run on the calibration PC/laptop to check the system
is working correctly. It shows useful diagnostic information including number
of targets seen, targets used, rms error as well as position information output
to the VR system. The rms error should ideally be in the region 0.05 to 0.10
and must always be less than 0.25. Anything above this will cause the yellow
error light on the
free-d™ processor card to illuminate and is considered a non-
trivial problem.
Within the lom1.bat program is a graph facility
that plots the fluctuation of measured x,y and z
(height). Keep the
free-d ™ TSC stationary.
Press “G”, if the plotted lines are within the
indicated “1mm” level, then the system is
operating within specification whilst stationary.
Further tests need to be performed for overall
acceptance.
Calibration need only be carried out once, assuming none of the targets are
subsequently moved. Should a target be accidentally knocked out of
alignment, its position can be temporarily deleted from the database. This
effectively removes any erroneous positions, which may introduce error had
the target remained within the system calculations.
6.3 Additional free-d™ Processors
If more than one processor is being used, the additional units can be
calibrated simply by uploading the final database via the laptop and cable from
the freed_v14.exe program “utilities”, “upload database” function as before.
Ensure RMS error
is less than 0.1