Panasonic C1381 - Page 9

IBM PS/2 (VGA)
Mode 1 Mode 2 Mode 3
Pixel Period 35.30 ns 35.30 ns 39.70 ns
Pixel Rate 28.32 MHz 28.32 MHz 25.176 MHz
Horizontal Frequency 31.47 kHz 31.47 kHz 31.47 kHz
Line Time Total 31.78 us 31.78 ps 31.78 ps
Active 25.42 us 25.42 us 25.42 us
Blanking 6.36 ps 6.36 ps 6.36 Us
Front Porch 0.64 ps 0.64 pus 0.64 us
Sync Pulse 3.81 us 3.81 ps 3.81 Us
Back Porch 1.91 us 1.91 ps 1.91 us
Vertical Frequency 70.08 Hz 70.08 Hz 59.95 Hz
Frame Time Total 14.27. ms 14.27, ms 16.68 ms
Active 11.12 ms 12.71 ms 15.25 ms
Blanking 3.147 ms 1.557 ms 1.431 ms
Front Porch 1.176 ms 0.381 ms 0.318 ms
Sync Pulse 0.064 ms 0.064 ms 0.064 ms
Back Porch 1.907 ms 1.112 ms 1.049 ms
Active Dots 640 x 350 640 x 400 640 x 480
Signal Timing for Apple MAC IL
Apple MAC IL* * When the Apple MACIL is used, adjust H-Size and
V-Size to proper size (approximately 236mm x 176mm)
Pixel Period 33.1 ns by H-SIZE control (R514) and V-SIZE control (R445).
Pixel Rate 30.21 MHz
Horizontal Frequency 35.00 kHz ; ;
Line Time Total 28.571 us NOTE 1: C1381 is not auto sized and centered when
Active 21.164 ps used with Apple MACIL.
Blanking 7.407 us
Front Porch 2.116 us NOTE 2: When Apple MACII is used, an optional
Sync Pulse 2.116 bs 15P-15P mini adaptor (C81M2) is needed.
Back Porch 3.175 us
Vertical Frequency 66.67 Hz
Frame Time Total 15.000 ms
Active 13.714 ms
Blanking 1.286 ms
Front Porch 0.086 ms
Sync Pulse 0.086 ms
Back Porch 1.114 ms
Active Dots 640 x 480
* H/V composite sync