Sentry ST520 - Page 20

16
Set the reference values in either of two methods：
5-2-1. Using the measured values and adjust it manually as
the reference values.
5-2-2. Using the previous values stored in memory and adjusts
it manually as the reference values.
The difference between method 5-2-1 and 5-2-2 is whether the
Data Hold was enabled before entering the set mode.（See
diagram 5-2b）
Note：
Color difference =（Measured value）–（Reference value）
Example:
⊿Ev = Ev
meas
– Ev
ref
⊿x = x
meas
– x
ref
⊿y = y
meas
– y
ref
⊿u' = u'
meas
– u'
ref
⊿v' = v'
meas
– v'
ref
⊿CT = CT
meas
– CT
ref
(522)
Diagram 5-2b
Ev
ref
x
ref
/u
'
ref
y
ref
/v'
ref
Color
dirrerence
mode
MODE
Adjust value
Set the
Reference Value
Using the
measured values
Using the previous
values recorded
⊿
Hold for 3 secs.
Data
Hold
5-2-1.
5-2-2.
/CT
ref
Data
Hold
NOT
(522)