ETC Congo Family v6.4.0 - Manual (Page 638)

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NOTE
(v5.0) If you change the scroller calibration for a device and close the
Scroller Calibration Editor, recorded data (presets, palettes) for the
previous frame values will be updated to the new frame values.
Values between frames will not be affected.
To "clear" calibrations from a device/scroller: Re-select the same
scroller roll in the Device list
Scroller Fan override
In the Attribute setup (SETUP & ATTRIBUTE) it is possible to specify an Override value for
all Scroller Fans. If you set a value > 0%, this value will be used instead of the Fan values
programmed in the Scroller Roll. This is useful for making a temporary and absolute override
of all fans, for example during long rehearsals when heat is higher than during a
performance.