Input Signals (Recommended Timing)
For IBM and compatibles
Input signals: The video output signal timing of different types of video signals are shown below
For Apple Macintosh Series
VIDEO SIGNAL
for reference.
e
VIDEO SIGNAL
HORIZONTAL SYNC SIGNAL
VIDEO SIGNAL
VERTICAL SYNC SIGNAL
a | b | c | d |
w | x | y | z |
VIDEO SIGNAL
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| e = 2 dot | ||||
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| w |
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| IBM |
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| IBM | IBM | IBM | IBM | IBM | IBM | IBM | IBM | Apple | Apple | Apple |
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| VGA |
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| VESA | SVGA | SVGA | SVGA | SVGA | XGA | XGA | XGA | MacintoshTM | MacintoshTM | MacintoshTM |
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| IIsi | LC |
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| MODE |
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| TEXT |
| Graphic |
| Graphic | Graphic | VESA | VESA | VESA | VESA | VESA | VESA | 13" Monitor | 13" Monitor | 16" Monitor | ||
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| Guideline | Standard | Standard | Guideline | Standard | Standard | ||||||||||
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| 720 dot |
| 640 dot |
| 640 dot | 800 dot | 800 dot | 800 dot | 800 dot | 1024 dot | 1024 dot | 1024 dot | 640 dot | 640 dot | 832 dot | ||
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| 350 line |
| 400 line | 350 line | 400 line | 480 line | 480 line | 600 line | 600 line | 600 line | 600 line | 768 line | 768 line | 768 line | 480 line | 480 line | 624 line |
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| LEVEL |
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| 75Ω load |
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| 75Ω load | 75Ω load | 75Ω load | 75Ω load | 75Ω load | 75Ω load | 75Ω load | 75Ω load | 75Ω load | 75Ω load | 75Ω load | |||
| VIDEO |
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| TYPE |
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| R • G • B |
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| R • G • B | R • G • B | R • G • B | R • G • B | R • G • B | R • G • B | R • G • B | R • G • B | R • G • B | R • G • B | R • G • B | ||
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| C.SYNC | C.SYNC | C.SYNC | |||||||||||
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| FRONT PORCH | a |
| dot |
| 17 |
| 14 |
| 24 | 24 | 40 | 56 | 16 | 24 | 24 | 16 | 64 | 78 | 31 | |
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| SYNC | b |
| dot | 108 |
| 96 |
| 40 | 72 | 128 | 120 | 80 | 136 | 136 | 96 | 64 | 62 | 65 | ||
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| BACK PORCH | c |
| dot |
| 55 |
| 50 |
| 128 | 128 | 88 | 64 | 160 | 160 | 144 | 176 | 96 | 116 | 224 | |
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| VIDEO PERIOD | d |
| dot | 720 |
| 640 |
| 640 | 800 | 800 | 800 | 800 | 1,024 | 1,024 | 1,024 | 640 | 640 | 832 | ||
H |
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| dot | 900 |
| 800 |
| 832 | 1,024 | 1,056 | 1,040 | 1,056 | 1,344 | 1,328 | 1,312 | 864 | 896 | 1,152 | |||
S | 1H (a+b+c+d) |
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Y |
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| ∝s | 31.7774 |
| 31.7776 |
| 26.413 | 28.444 | 26.400 | 20.800 | 21.333 | 20.677 | 17.707 | 16.660 | 28.5714 | 28.595 | 20.124 | ||
N |
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C | 1 dot |
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| ns | 35.3082 |
| 39.7219 |
| 31.746 | 27.777 | 25.000 | 20.000 | 20.202 | 15,385 | 13.3 | 12.7 | 33.0688 | 31.914063 | 17.468 | ||
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| 1/H |
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| kHz | 31.4689 |
| 31.4688 |
| 37.860 | 35.156 | 37.879 | 48.077 | 46.875 | 48,363 | 56.476 | 60.023 | 35.0000 | 34.971149 | 49.693 | ||
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| 1/dot |
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| MHz | 28.322 |
| 25.175 |
| 31.500 | 36.000 | 40.000 | 50.000 | 49.500 | 65.000 | 75.0 | 78.75 | 30.2400 | 31.334149 | 57.246 | ||
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| LEVEL |
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| TTL |
| TTL |
| TTL |
| TTL | TTL | TTL | TTL | TTL | TTL | TTL | TTL | TTL | TTL | TTL |
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| SYNC POLARITY |
| +/– | + |
| – | + | – | – | – | +/– | + | + | + | – | – | + | – | – | – | |
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| FRONT PORCH | w |
| H | 38 |
| 13 | 38 | 13 | 11 | 9 | 1 | 1 | 37 | 1 | 3 | 3 | 1 | 3 | 3 | 1 |
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| SYNC | x |
| H | 2 |
| 2 | 2 | 2 | 2 | 3 | 2 | 4 | 6 | 3 | 6 | 6 | 3 | 3 | 3 | 3 |
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| BACK PORCH | y |
| H | 59 |
| 34 | 59 | 34 | 32 | 28 | 22 | 23 | 23 | 21 | 29 | 29 | 28 | 39 | 39 | 39 |
V |
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VIDEO PERIOD | z |
| H | 350 |
| 400 | 350 | 400 | 480 | 480 | 600 | 600 | 600 | 600 | 768 | 768 | 768 | 480 | 480 | 624 | |
S |
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Y |
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| H | 449 |
| 449 | 449 | 449 | 525 | 520 | 625 | 628 | 666 | 625 | 806 | 806 | 800 | 525 | 525 | 667 |
N | 1V (w+x+y+z) |
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C |
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| ms | 14.2681 |
| 14.2681 | 14.2681 | 14.2681 | 16.6832 | 13.735 | 17.778 | 16.579 | 13.853 | 13.333 | 16.666 | 14.272 | 13.328 | 15.00 | 15.00 | 13.423 | |
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| 1/v |
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| Hz | 70.0866 |
| 70.0866 | 70.0863 | 70.0863 | 59.9405 | 72.809 | 56.250 | 60.317 | 72.188 | 75.000 | 60.006 | 70.069 | 75.029 | 66.67 | 66.67 | 74.502 |
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| LEVEL |
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| TTL |
| TTL | TTL | TTL | TTL | TTL | TTL | TTL | TTL | TTL | TTL | TTL | TTL | TTL | TTL | TTL |
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| SYNC POLARITY |
| +/– | – |
| + | – | + | – | – | +/– | + | + | + | – | – | + | – | – | – | |
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Notes:
•When connecting a notebook computer to the
•This projector may not be able to display images from notebook computers in simultaneous (CRT/LCD) mode. If this occurs, turn off the LCD display on the notebook computer and output the display data in “CRT only” mode. Details on how to change display modes can be found in your notebook computer’s operation manual.