Yamaha LPX-510 Owner's Manual page 71

Glossary
Sync.
(Synchroni-
zation)
Tracking
VGA
XGA
68
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
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.
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.
A type of image signal with a resolution of 640 (horizontal) × 480 (vertical) dots which is used by IBM
PC/ AT-compatible computers.
A type of image signal with a resolution of 1,024 (horizontal) × 768 (vertical) dots which is used by
IBM PC/ AT-compatible computers.