Acer AT4220A AT4220A Service Guide - Page 41

• Hsync: f < 1KHz, duty cycle > 25% • Vsync: f < 10Hz, duty cycle > 25% The power consumption is valid over the specified voltage and frequency range. Power consumption is measured from AC source. There are no power saving modes for TV, AV1, AV2, COMPONENT 1 and 2, DVI and HDMI inputs. Performance Specifications The performance is checked at 25oC environment. White Balance and Uniformity Set contrast and brightness at maximum. • Standard: 10000 degree K (x=280, y=288) on x and y value. • Warm: 6500 degree K (x=312, y=329) on x and y value. • Cold: 14000 degree K (x=263, y=273) on x and y value. Display Area, Phase Center and Tilt • Display area: 42 inches diagonal • H-phase: A-B less than 1.5 mm • V-center: C-D less than 1.5mm • Tilt: E-F less than 1 mm E F C A B D Max. Brightness The brightness should exceed 350 Cd/m2 while set both of contrast and brightness to max. and color temperature of Standard is selected. (Typical value would be at 400 Cd/m2). Acoustical Noise With the display operation, the sound test is followed the ISO-7779 and shall be less than 35 dB/A in standard distance of 1 m. Also the display should not emit easily perceptible abnormal sounds. Power Supply Electrical Specifications Input Voltage and Frequency Range • Operating range of line voltage: AC 90V to 264V, 47Hz to 63Hz • Power consumption: under 291W Chapter 1 35