Glossary – Epson Z8250NL User Manual
Page 210
Glossary
210
Tracking
The signals output from computers have a specific frequency. If the projector frequency does not match this frequency, the
resulting images are not 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 appear in the signal.
Trap IP Address
This is the IP Address
g
for the destination computer used for error notification in SNMP.
Progressive
A method of image scanning whereby the image data from a single image is scanned sequentially from top to bottom to create
a single image.
Refresh Rate
The light-emitting element of a display maintains the same luminosity and color for an extremely short time. Because of this, the
image must be scanned many times per second to refresh the light-emitting element. The number of refresh operations per
second is called the Refresh Rate and is expressed in hertz (Hz).