Set Function - Sentry ST520 Instruction Manual

5-2 SET Function

Color Difference ： This function allows user to set certain
reference values （ Ev
compare with the target color.
Set the Reference Value
You can select one of these color difference modes to set：
1. ⊿Ev, ⊿x, ⊿y
2. ⊿Ev, ⊿u', ⊿v'
3. ⊿Ev, ⊿CT(522), ⊿u'v'
In the Color Difference mode, press the
for 3 seconds into set mode.（See diagram 5-2a）
Color
Difference
⊿
⊿Ev ⊿CT(522) ⊿u'v'
ref
⊿Ev ⊿x ⊿y
⊿Ev ⊿u' ⊿v'
Diagram 5-2a set reference values
, x , y , u'
ref ref
⊿
Hold for 3 secs.
⊿
Hold for 3 secs.
⊿
15
, v' CT
ref ref, ref
button and hold
Set the
Reference Value
SET
Ev / x
ref
SET
Ev / u'
ref
SET
Ev / CT
ref
(522) ） to
/ y
ref ref
/ v'
ref ref
(522)
ref