Dell P2225H User Manual page 12

Eye Comfort 3.0 Requirements and Star Rating Scheme for Monitors
Category Test item
Low Blue Light
Eye Care
Flicker Free
Ambient Light Sensor
performance
Ambient Light Intelligent CCT
Management control
Intelligent Luminance
control
Refresh Rate
Luminance uniformity Luminance uniformity ≥ 75%
Color Uniformity
Freedom of
movement
Gamma difference
Image quality
Wide color gamut
Eye Comfort
User guide
User Guide
1
Software controls the blue light emission by reducing excessive blue light, resulting in a
more yellow tone.
2
Color gamut describes the availability of colors in the display. Various standards were
developed for specific purposes. 100% corresponds to the full color space as defined in the
standard.
3
NTSC stands for National Television Standards Committee, which developed a color
space for the television system that is used in the United States.
Remark
4
sRGB is a standard red, green, and blue color space that is in use on monitors, printers,
and the World Wide Web.
5
DCI-P3, short for Digital Cinema Initiatives - Protocol 3, is a color space used in digital
cinema that encompasses a wider range of colors than the standard RGB color space.
6
Adobe RGB is a color space created by Adobe Systems that encompasses a broader
range of colors than the standard RGB color model, particularly in the cyans and greens.
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12 About your monitor
3-star
TÜV Hardware LBL
Category III (≤50%)
or Software LBL
1
solution
TÜV Flicker Reduced
or TÜV Flicker Free
No sensor
No
No
>60 Hz
Color uniformity Δu'v' ≤ 0.02
Luminance changes shall decrease less than 50%;
The color shift shall be less than 0.01.
Gamma difference
≤ ±0.2
3
NTSC Min.72% (CIE
1931) or
2
4
sRGB Min.95% (CIE
1931)
Yes
Star Rating Scheme
4-star
TÜV Hardware LBL
Category II (≤35%)
or Category I (≤20%)
TÜV Flicker Reduced
or TÜV Flicker Free
No sensor
No
No
>75 Hz
Gamma difference
≤ ±0.2
4
sRGB Min.95% (CIE
1931)
Yes
5-star
TÜV Hardware LBL
Category II (≤35%)
or Category I
(≤20%)
Flicker Free
Ambient light
sensor
Yes
Yes
>120 Hz
Gamma difference
≤ ±0.2
5
DCI-P3 Min.95%
(CIE 1976) &
4
sRGB Min.95%
(CIE 1931) or
6
Adobe RGB
Min.95% (CIE 1931)
4
& sRGB Min.95%
(CIE 1931)
Yes