B&R Industries Power Panel 300, User Manual

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Appendix A • Glossary
Power Panel 300/400 User's Manual V 2.30
EDID data
Abbreviation for " E xtended D isplay I dentification D ata". EDID data contains the characteristics
of monitors / TFT displays transferred as 128 KB data blocks to the graphics card via the Display
Data Channel (DDC). This EDID data can be used to set the graphics card to the monitor
properties.
EMC
" E lectro m agnetic C ompatibility". The ability of a device or a system to function satisfactorily in
its electromagnetic environment without introducing intolerable electromagnetic disturbances to
anything in that environment [IEV 161-01-07].
Encode, encoding
When processing information, it is often necessary to change the information from one form of
representation to another. This conversion process is called encoding, and the rules used to
assign one character set to another are referred to as encoding rules. A differentiation is made
between ambiguous and unambiguous encoding depending on if one set is a direct reflection of
the other. Most codes use unambiguous encoding with one set directly reflecting the other. A
differentiation is also made between redundant and non-redundant encoding. With non-
redundant encoding, the full range of the available character set is used, i.e. each code is
defined. With redundant encoding, the available character set also contains codes that are not
used. This differentiation is important during data transfer when detecting and, if necessary,
correcting data transfer errors.
EPROM
E rasable PROM >(completely with ultraviolet light).
Ethernet
An IEEE 802.3 standard for networks. Ethernet uses bus or star topology and controls the traffic
on communication lines using the access procedure CSMA/CD (Carrier Sense Multiple Access
with Collision Detection). Network nodes are connected using coaxial cables, fiber optic cables
or twisted pair cabling. Data transfer on an Ethernet network takes place in frames of variable
lengths that consist of supply and controller information as well as 1500 bytes of data. The
Ethernet standard provides base band transfers at 10 megabit and 100 megabit per second.
FIFO
An abbreviation for " F irst I n F irst O ut". A queuing organization method whereby elements are
removed in the same order as they were inserted. The first element inserted is the first one
removed. Such an organization method is typical for a list of documents that are waiting to be
printed.
E
F