Acer AL1916 AL1916p Service Guide - Page 16

opposite boxes, A&C or B&D. Btgt will only be displayed for aligning the LMD. It will be turned off for the actual measurement. ♦ The target box point (Btgt) will be measured with the source box (Bsrc) turned on then off. (Btgt is for alignment purpose only) Display the background only at level Gbkg. Display Btgt determined in step 2 above. Using the correct distance, angle, and measurement aperture, align the LMD to the center of the Btgt. Turn off Btgt. With Gbkg set to its proper level, measure the luminance (or color). Next,turn on the source box Bsrc. Again measure at the center point of Btgt (without Btgt present.). In this case the LMD will be measuring the shadowing level, Lsh. Panel Relative Humidity Input Signals Video input • Type • Input Impedance • Polarity • Amplitude • Display Color Sync input • Signal • Polarity JP777-E02 Analog R, G, B. 75 ohm +/- 2% Positive 0 - 0.7 +/- 0.05 Vp same as LCD panel separate horizontal and vertical sync, or composite sync which are TTL compatible positive and negative. - 16 -