Glossary
Sync. | The signals output from computers have a specific frequency. If the projector frequency does not |
(Synchroni- | match this frequency, the resulting images will not be of a good quality. The process of matching the |
zation) | phases of these signals (the relative position of the crests and troughs in the signal) is called |
| "synchronization". If the signals are not synchronized, problems such as flickering, blurriness and |
| horizontal interference can occur. |
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Tracking | The signals output from computers have a specific frequency. If the projector frequency does not |
| match this frequency, the resulting images will not be of a good quality. The process of matching the |
| frequency of these signals (the number of crests in the signal) is called "tracking". If tracking is not |
| carried out correctly, wide vertical stripes will appear in the projected images. |
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VGA | A type of image signal with a resolution of 640 (horizontal) × 480 (vertical) dots which is used by IBM |
| PC/ |
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XGA | A type of image signal with a resolution of 1,024 (horizontal) × 768 (vertical) dots which is used by |
| IBM PC/ |
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