Acer H243H H243 LCD Monitor Service Guide - Page 6

Acer œ75% (DC output full loading and nominal AC input voltage range) Acer -LCD-H243H Ripple and Noise Total composite ripple and noise less than 800mV for +25V output, and less than 150mV for +5V output, and 50mV for +3.3V output tested by DC loading side parallel with a 47uF/EC and 0.1uF/Ceramic. Capacitors and measured band-width with DC-20MHz DC Output Voltage and Current 3.1 Brightness output The test to verify specifications in this section shall be performed under the following standard conditions unless otherwise noted. Temperature Test pattern Video Resolution Video input level Warm-up time : 25 ± 5°C : white : 1920 x 1080 : 700 mV ± 2% : 30 minutes Set brightness control and also contrast control at maximum, to measure the screen center, the light output shall BL ≥ 240 cd/m2 (as panel spec). 3.2 White balance The test standard conditions refer to Sec 3.1.( Brightness and contrast are under default value ) Mode Cool Warm User 9300K 6500K Chromaticity Coordinate x 0.283 ± 0.030 y 0.297 ± 0.030 0.313 ± 0.030 0.329 ± 0.030 Panel While x Panel While y 3.3 Brightness uniformity The test standard conditions refer to Sec 3.1. Min. Max. luminance luminance of of nine nine points points (backlight ) (backlight ) ‡75% L/10 L/2 4 5 6 W/10 1 2 3 7 8 9 W/2 5