Glossary 178
Duty Cycle
Duty cycle is the page quantity which does not affect printer
performance for a month. Generally the printer has the lifespan
limitation such as pages per year. The lifespan means the average
capacity of print-outs, usually within the warranty period. For
example, if the duty cycle is 48,000 pages per month assuming 20
working days, a printer limits 2,400 pages a day.
ECM
Error Correction Mode (ECM) is an optional transmission mode built
into Class 1 fax machines or fax modems. It automatically detects
and corrects errors in the fax transmission process that are
sometimes caused by telephone line noise.
Emulation
Emulation is a technique of one machine obtaining the same results
as another.
An emulator duplicates the functions of one system with a different
system, so that the second system behaves like the first system.
Emulation focuses on exact reproduction of external behavior,
which is in contrast to simulation, which concerns an abstract model
of the system being simulated, often considering its internal state.
Ethernet
Ethernet is a frame-based computer networking technology for local
area networks (LANs). It defines wiring and signaling for the physical
layer, and frame formats and protocols for the media access control
(MAC)/data link layer of the OSI model. Ethernet is mostly
standardized as IEEE 802.3. It has become the most widespread LAN
technology in use during the 1990s to the present.
EtherTalk
A suite of protocols developed by Apple Computer for computer
networking. It was included in the original Macintosh (1984) and is
now deprecated by Apple in favor of TCP/IP networking.
FDI
Foreign Device Interface (FDI) is a card installed inside the machine
to allow a third party device such as a coin operated device or a card
reader. Those devices allow the pay-for-print service on your
machine.
FTP
A File Transfer Protocol (FTP) is a commonly used protocol for
exchanging files over any network that supports the TCP/IP protocol
(such as the Internet or an intranet).