Planar LC12 - Manual (Page 14)

Title: Product Specification: LC12 High-Bright Monitor Page 14 of 24
Document Number: 023-0284-01 Revision: A
VIDEO MODES
IBM VGA VESA
RESOLUTION 640 x 400 640 x 480 800 x 600
Video Clock 25.175 MHz 25.175 MHz 50.000 MHz
Horizontal Scan Frequency 31.468 KHz 31.468 KHz 48.077 KHz
Horizontal Line Period 31 .778 µs 800 dots 31 .778 µs 800 dots 20 .800 µs 1040 dots
Horizontal Blanking 6 .356 µs 160 dots 6 .356 µs 160 dots 4 .800 µs 240 dots
Horizontal Sync Pulse 3 .813 µs 96 dots 3 .813 µs 96 dots 2 .400 µs 120 dots
Horizontal Front Porch 0 .636 µs 16 dots 0 .636 µs 16 dots 1 .120 µs 56 dots
Horizontal Back Porch 1 .907 µs 48 dots 1 .907 µs 48 dots 1 .280 µs 64 dots
Horizontal Active Display 25 .422 µs 640 dots 25 .422 µs 640 dots 16 .000 µs 800 dots
Horizontal Sync Polarity -
- +
Vertical Scan Frequency 70.087 Hz 59.94 Hz 72.187 Hz
Vertical Frame Period 14 .268 ms 449 line 16 .683 ms 525 line 13 .853 ms 666 line
Vertical Blanking 1 .557 ms 49 line 1 .430 ms 45 line 1 .373 ms 66 line
Vertical Sync Pulse 0 .064 ms 2 line 0 .064 ms 2 line 0 .125 ms 6 line
Vertical Front Porch 0 .381 ms 12 line 0 .318 ms 10 line 0 .770 ms 37 line
Vertical Back Porch 1 .112 ms 35 line 1 .049 ms 33 line 0 .478 ms 23 line
Vertical Active Display 12 .711 ms 400 line 15 .254 ms 480 line 12 .480 ms 600 line
Vertical Sync Polarity +
- +
Note: For video mode 720 x 400 missing video rows and columns are allowed. This is a text mode
only. Performance is acceptable if characters as defined section 1.2.1 are legible. Missing row or
columns at edge of display is acceptable as long as characters remain legible.