Acer P3250 Acer P1350 and P3250 Projector Series Service Guide - Page 72

4-8 Optical Performance Measure Inspection Condition - Environment luminance: 5 Lux - Product must be warmed up for 3 minutes - Distances from the screen: 2.36 M - Screen Size: 60 inches diagonal - Reset to default before measurement 1. Test equipment Procedure - Press "Power→Left→Left→Menu". - Select "Spoke Test" 2. Brightness Procedure Criteria - Full white pattern - Use CL100 to measure brightness values of P1~P9. - Follow the brightness formula to calculate brightness values. ☼ Brightness F ormula Avg.(P1~ P9)x1.1m2 - 900 lumens 3. Ful On/Full Off Contrast Procedure - Full white pattern & full black pattern - Use CL100 to measure brightness values of full white pattern P5 & full black pattern B5 ( see image: full white) - Follow Contrast formula to calculate contrast values. Full white pattern Full black pattern P3150/P3250/P3150 Refresh/P3250 Refresh Confidential 4-10