Acer AL1911 AL1911 Service Guide - Page 6

• Lamp Current 7mA rms.( typ). 4 Lamp • Weight 2500g . • Optical Specifications The following items are measured under stable conditions. The optical characteristics should be measured in a dark room or equivalent state with the methods shown in Note(4). wMeasuring equipment : TOPCON BM-5A, BM-7, PHOTO RESEARCH PR650 (Inverter Freq. : 54kHz) *Ta =25 ± 2°C, VDD=5V, fv=60 Hz, fDCLK=54 MHz, IL= 6.5mArms Item Contrast Ratio (Center of screen) Response Time Rising Falling Luminance of White (Center of screen) Red Color Chromaticity (CIE 1931) Green Blue White Hor. Viewing Angle Ver. Brightness Uniformity (9 points) Symbol CR TR TF YL Rx Ry Gx Gy Bx By Wx Wy θ L θ R φ H φ L BUNI Condition Normal φ = 0° θ = 0° Viewing Angle CR≥10 Min. Typ. Max. Unit 400 700 - - 15 30 msec - 10 25 240 300 - cd/m2 TYP. -0.03 85 85 85 85 0.648 0.349 0.292 0.596 0.148 0.125 0.313 0.329 - TYP. +0.03 - Degrees 75 - - % Note (1)(2)(4) BM-5A (1)(3) BM-7 (5) BM-5A (1)(4) PR650 (1)(4) BM-5A (6) BM-5A Note 1) Definition of Viewing Angle: Viewing angle range (10≤CR) 6