14 Reference Infomation
14-4 Timing Chart
This section of the service manual describes the timing that the computer industry recognizes as standard for computer- generated video signals.
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Mode |
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| 1280/60Hz |
| 2560/60Hz |
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Timing | 1280X800 |
| 2560X1600 |
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fH (kHz) | 49.306 |
| 98.713 |
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A μsec | 20.282 |
| 10.13 |
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B μsec | 0.451 |
| 0.119 |
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C μsec | 1.127 |
| 0.298 |
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D μsec | 18.028 |
| 9.534 |
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E μsec | 0.676 |
| 0.179 |
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fV (Hz) | 59.91 |
| 59.972 |
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O msec | 16.692 |
| 16.675 |
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P msec | 0.122 |
| 0.061 |
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Q msec | 0.284 |
| 0.375 |
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R msec | 13.225 |
| 16.209 |
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S msec | 0.061 |
| 0.030 |
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Clock | 71.00 |
| 268.500 |
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Freq. |
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(MHz) |
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Polarity | Positive |
| Positive |
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H.Sync |
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V.Sync | Negative |
| Negative |
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| <Separate Sync Only> |
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| Separate Sync |
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Video |
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| Video |
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C | D | E | Q | R | S |
Sync |
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| Sync |
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| B |
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| P |
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| A |
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| O |
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H/V Composite Sync |
A : Line time total | B : Horizontal sync width | O : Frame time total | P : Vertical sync width |
C : Back porch | D : Active time | Q : Back porch | R : Active time |
E : Front porch |
| S : Front porch |
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