Sentry ST520 Instruction Manual page 15

Measuring Modes
Color measurement and color difference are switchable by
pressing MODE and
Both of them also have 3 modes to select：
‧Color Measurement：
1. Ev, x, y （Illuminance, Color coordinate）
2. Ev, u', v' （Illuminance, Color coordinate, CIE1960）
3. Ev, CT, ⊿uv （Illuminance, Color temperature）
Press the MODE button to toggle in the color measurement.
‧Color Difference：
1. ⊿Ev, ⊿x, ⊿y (Color difference of Illuminance and Color
coordinate)
2. ⊿Ev, ⊿u', ⊿v' (Color difference of Illuminance and Color
coordinate, CIE1960)
3. ⊿Ev, ⊿CT(522),⊿u'v' (Color difference of Illuminance
and Color temperature)
This function provides the users to measure or check the
difference of illuminance, color coordinate color and color
temperature between two or more than two light sources.
Press the
button.
button to toggle the color difference mode.
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