Difference Measurement...continued
> When entering references with any illuminant other than C
2
, Yellowness and Whiteness
(per ASTM E313) are not calculable.
> Once a reference has been set, changing between CIE Lab or Hunter Lab; Lch (ab) or
Lch (uv); and XYZ or X%Y%Z%, the references will not be automatically adjusted.
Note: You can set all reference locations to OFF by:
•Activating difference mode.
•Hold down [DIF] until reference entry is activated, then simultaneously press
[ILLUM] and [FUNCTION].
Ref 1 defaults to ON if all references are turned OFF.
Refer to Steps 2 and 3 below.
3.5.1 Entry of Reference Values
By Measurement
1) Select desired Illum/Obs (see
Sec. 3.3).
2) Press
[FUNCTION]
to select
desired measurement space.
> If ∆ is not displayed, press
[DIF] to activate Difference
mode.
3) Hold down
[DIF]
until
"SET
REF VALUES - ENTER or
MEASURE"
is displayed.
First displayed are the
previous entered reference
values for the last selected
reference location.
The reference location is
momentarily displayed.
Then "EXIT" is displayed.
> You can set all reference
locations to OFF by: holding
down [DIF] then
simultaneously pressing
[ILLUM] and [FUNCTION].
Note, Ref 1 defaults to ON.
FUNCTION ILLUM
DIF
CAL
SET REF VALUES
ENTER or MEASURE
XYZ
Z 2 . 6 9
C
2
Y 4 . 4 5
X 6 . 1 6
Z 2 . 6 9
Y 4 . 4 5
X 6 . 1 6
Z 2 . 6 9
Y 4 . 4 5
X 6 . 1 6
EXIT
REF 03
HOLD DOWN
FUNCTION ILLUM
DIF
CAL
X + 4 . 1 2
Y 2 . 8 7
Z + 2 . 4 1
C
2
X Y Z
+
PRESS
14
