Sentry ST520 Instruction Manual page 16

Measuring Modes Diagram
Ev
x
y
⊿Ev
⊿ x
⊿ y
MODE
Ev
u'
v'
MODE
⊿Ev
⊿ u'
⊿ v'
⊿
Ev
CT
⊿uv
⊿
⊿Ev
⊿
CT
(522)
⊿u'v'
12
Color
Measurement
Color
Difference