CMC Difference Operation...continued
3) Press [FUNCTION] and [ILLUM]
at the same time to exit to the main
menu.
"REFERENCES UPDATED" is
momentarily displayed and the
procedure is finalized.
> If no measurement or entry is
made the unit will display
"REFERENCES NOT CHANGED."
Taking a CMC Difference Measurement
Before a CMC difference measurement can be made:
• LCh CMC must be set to "ON" in modes (Sec. 5.2)
• Reference must be entered (Sec. 3.5.1)
• CMC difference operation must be setup (Sec. 3.6).
1) Select desired illuminant/observer (see Sec. 3.3).
2) Select L*C*h° difference mode function.
3) Center target window over area to be compared.
4) Lower unit to target window and hold compressed. "Reading L
c
C
c
H
c
C
2
" (i.e.,
the selected illum/obs) will momentarily be displayed, and then the reference
location and data. Release the unit.
5) The display will show the difference
between the reference color and
sample, and the ∆E
CMC
value.
•Pressing the [DIF] key will toggle
the display between the absolute
measurement values and the CMC
difference values.
> "CMC cf TOLERANCE
EXCEEDED" will display during a L*C*h° difference measurement when DECMC value
exceeds the cf (commercial factor) value.
> L
c
C
c
H
c
are values used for calculating ∆E
cmc
and are not ∆L*, ∆C*, and ∆H*.
FUNCTION ILLUM
DIF
CAL
l 2 . 0 0
c 1 . 0 0
PRESS AT SAME TIME
cf = 1 . 0 0
EXIT
CMC Difference Values
Absolute
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