NEC SpectraView Profiler 5 User Manual page 39

Profiler
User Manual
CRT - monitors
In CRTs the intensity of the 3 phosphors is controlled by an analog
signal that can be modulated nearly infinitely variable. Since the inten-
sity of each channel can be controlled individually (gain), the color
temperature can be set very exactly. Gradation curves in a CRT can not
be influenced, each monitor has it's more or less fixed gamma. That's
why a CRT can not be calibrated in hardware completely.
Mac OS X
The color management framework of OS X (ColorSync) automati-
cally detects the presence of calibration curves in an ICC-profile and
downloads them into the video card at system start-up or when allocat-
ing a different ICC-profile using the monitors control panel.
Windows
Some older Windows color management frameworks (ICM) does not
support this functionality, a separate LUT-loader is required. Spectra-
View Profiler 5 contains such a LUT-loader which is installed automati-
cally into the start-up programs folder when installing SpectraView
Profiler 5
At Windows start-up the LUT-loader downloads the calibration curves
into the video card. When changing the monitor profile, the LUT-loader
must be launched manually in order to download the correct LUT.
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