ViewSonic EA771B User Guide - Page 14

Factory Preset Timings The following table lists the factory preset timings: Resolution Horizontal Vertical Polarity of SynFrequency Frequency chronizing Signal Timing Pixels x Lines kHz Hz HorizNertical E N VESA 640 x 480O60Hz 640 x 480 31.50 60 -/- G VESA 640 x 480O75Hz 640 x 480 37.50 75 -/- L VESA 800 x 600O75Hz 800 x 600 46.88 75 +/+ S VESA 1024 x7680075Hz 1024 x 768 60.02 75 -/- H VESA 1280 x 1024@60Hz 1280 x 1024 63.98 60 +/+ MAC 640 x 480O60Hz 640 x 480 31.5 60 -/- Note • Input timing must be within the horizontal and vertical frequency ranges in order to set the screen size and position. Before registering a new signal, check its horizontal and vertical timing specifications. • The factory preset timing is registered when the difference between the user definable timing and the factory preset timing is smaller than the allowable deviation; also, the polarity of their synchronizing signals must be the same. 16 Operation ViewSonic EA771/EA771B