Acer AL1914 AL1914 Service Guide - Page 18

AU Input Signals Video input • • Type Input Impedance • Polarity • Amplitude • Display Color Sync input • Signal • Polarity 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. Interface frequency The following frequency range is generalized by supported timing. If the entered mode does not match the supported timing the display optimization will not be assured. • Horizontal Frequency • Vertical Frequency 24KHz --80KHz 49Hz -------75Hz - 18 -