Samsung 215TW Service Manual - Page 60

14-4 Timing Chart 14 Reference Infomation - This section of the service manual describes the timing that the computer industry recognizes as standard for computer-generated video signals. Table 14-1 Timing Chart Mode IBM VESA VGA2/ 70 Hz VGA3/ 60 Hz 640/75 Hz 800/60 Hz 800/75 Hz 1024/60Hz 1024/75Hz 1280/60Hz 1280/75Hz 1600/60Hz Timing 720 x 400 640 x 480 640x480 800x600 800x600 1024x768 1024x768 1280x1024 1280x1024 1600x1200 fH (kHz) 31.469 A μsec 31.777 B μsec 3.813 C μsec 1.589 31.469 31.778 3.813 1.589 37.500 26.667 2.032 3.810 37.879 26.400 3.200 2.200 46.875 21.333 1.616 3.232 48.363 20.677 2.092 2.462 60.023 16.660 1.219 2.235 63.981 11.852 1.037 2.296 79.975 12.504 1.067 1.837 75.000 13.333 1.185 1.877 D μsec 26.058 E μsec 0.318 fV (Hz) 70.087 O msec 14.268 P msec 0.064 Q msec 0.858 R msec 13.155 S msec 0.191 Clock Freq. (MHz) 28.322 26.058 0.318 59.940 16.683 0.064 0.794 15.761 0.064 26.175 20.317 0.508 75.000 13.333 0.080 0.427 12.800 0.027 31.500 20.000 0.000 60.317 16.579 0.106 0.607 15.840 0.0261 40.000 16.162 0.323 75.000 13.333 0.064 0.448 12.800 0.021 49.500 15.754 0.369 60.004 16.666 0.124 0.600 15.880 0.062 75.000 13.003 0.203 75.029 13.328 0.050 0.466 12.795 0.017 9.259 0.000 60.020 16.005 0.047 0.594 15.630 0.016 9.481 0.119 75.025 13.329 0.038 0.475 12.804 0.013 9.877 0.395 60.000 16.667 0.040 0.613 16.000 0.013 78.750 108.000 135.000 162.000 Polarity H.Sync Negative Negative Negative Positive Positive Negative Positive Positive Positive Positive V.Sync Positive Negative Negative Positive Positive Negative Positive Positive Positive Positive Remark Separate Separate Separate Separate Separate Separate Separate Separate Separate Separate Separate Sync H/V Composite Sync Video C D E Sync B A A : Line time total C : Back porch E : Front porch Video Q R S Sync P O Sync-on-Green B : Horizontal sync width D : Active time O : Frame time total Q : Back porch S : Front porch P : Vertical sync width R : Active time 14-7