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Measurement
Preparation
User Calibration
User calibration indicates to set user’s original correction coefficients in calibration chan-
nel by setting calibration value (For L
v
, x, and y or L
v
, u’ and v’ or X, Y and Z) in this in-
strument.
Displayed and output values for every measurement are values corrected with this cor-
rection coefficient unexceptionally.
Following calibration is available based on coefficient set by user.
(1) Difference in instrument readings due to difference between CIE 1931 color-matching
functions and spectral sensitivity.
(2) Difference in instrument readings between units if multiple numbers of this unit are
used.
This instrument employs monocalibration for user calibration. Accurate measurement
can be performed at luminance and chromaticity around calibration light source.
If you obtain calibration value by measuring a calibration light source with a prototype
standard, set the prototype standard and CS-200 in the same position and angle as
for the calibration light source and measure the same area. If measurement conditions
with the prototype standard and with CS-200 are different, you fail to perform correct
caliblation.
Keep calibration light source as stable as possible with fixed voltage power source
during measurement.
User calibration can be applied to every channel except for CH00.
KONICA MINOLTA SENSING’s correction coefficient has been set in all channels includ
-
ing CH00 by the time of shipment.
This shall restore if user calibration is reset.
Color on which user calibration is based is to set as target color in the same calibration
channel.
Target color serves as reference to determine how measured color deviates from refer-
ence.
User calibration can be done through either of following methods.
(1) Measurement
(2) Select from stored data
(3) Copy from other calibration channel