Epson Z8250NL, Z8455WUNL, Z8255NL manual 208, Tracking, Trap IP Address, Progressive, Refresh Rate

Glossary 208

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 Addressg 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).