Philips 160EL1SB/00, Service Manual

Page: 81 / 92

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1.0
160E1 15.6” Wide LCD Monitor
2008/12/31 PHILIPS 10 of 20
7 Monitor Name (13 characters max.) Philips 160EL
3.12 Hot-key definition
+27.(<[OV
Any deviation between document and sample, please refer to Philips approved sample.
3.13 Smart contrast (Dynamic contrast ratio)
Smart Contrast is a kind of dynamic backlight control.
This function changes panel backlight dynamically according to the frame brightness histogram.
At least the minimum contrast ratio has to be > 6000:1
4 Visual characteristics
4.1 Test conditions
Unless otherwise specified, this specification is defined
under the following conditions.
(1) Input signal : As defined in 3.3, 1366*768
non-interlaced mode (1366*768@60Hz 85.5MHz), signal
sources must have 75 ohm output impedance.
(2) Luminance setting : controls to be set to 300 nits with
full screen 100 % duty cycle white signal
(3) Warm up: more than 30 minutes after power on with signal supplied.
(4) Ambient light: 400 -- 600 lux.
(5) Ambient temperature: 20 ± 5
q
C
4.2 Brightness
To follow Panel specification.
4.3 Image size
Actual display size : Refer to 2.1 LCD PANEL spec.
4.4 Brightness uniformity
Set contrast at 100% and turn the brightness to get average above 300 nits
at centre of the screen.
Apply the Fig 1, it should comply with the following formula:
B_min
X 100% > 75% (Follow panel spec.)
B_max
Where B_max =Maximum brightness
B_min = Minimum brightness