FARGO electronic HDP820 service manual 504

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Glossary of Terms (continued)

Term	Definition
Cache	A type of memory buffer to store data temporarily, used to hold
	information that is most often exchanged between controller and
	peripheral, to expedite data transfer.
Calibrating	A procedure to adjust an electro-mechanical device so that it
	operates within established parameters.
Cleaning Roller	High tack rollers positioned just after the input hopper to lift debris
	off the card as it rolls over it. A clean card surface improves print
	quality.
CD (Compact Disc)	A 4.75 inch (12 cm) optical disk that stores data, written too and
	read from using a laser.
DMA (Direct Memory	Channels designated within the Windows operating environment
Access)	that are used for dedicated high-speed communication between the
	PC and the Printer port.
Centronics	A parallel communications interface that has become the standard
	for connections to Printers, designed by the Centronics Corp.
Coercivity	The property of a Magnetic Stripe that indicates the amount of force
	needed before magnetic saturation, measured in Oersted (Oe).
color matching	The process of adjusting color hue, saturation and brightness, to
	duplicate a desired color. An algorithm within the Driver, which
	adjusts the color balance and provides output with the desired
	color, automates this process.
Compressed air	Air stored in a tank or produced by an aerosol can, delivered by
	through nozzle at a high speed. Used in the Printer to blow out
	debris.
Contrast	The degree of difference in luminance of two areas.
Control Panel	The Panel on the Printer from which the user can control Printer
	functions. The Printer is usually composed of the control buttons
	and an LED or LCD Display.
	Continued on the next page

HDP￿ 800 Series Card Printer/Encoders Service Manual (Rev. 5.0) 504