Salicru SOHO Serie Manual De Usuario página 46

7.2.- Glossary.
Electromagnetic Compatibility
VA
LCD
Serial port
Modem
Circuit breaker
LAN
AVR
Autonomy
Branch of the electronic and telecommunication technology that is in
charge of the interferences between the electric and electronic
equipments. It is defined (in accordance with the international standard
collected on the Technical file of the International Electrotechnical
Comission 61000-1-1) as «the capacity of any device, equipment or
system to operate in suitable way in its electromagnetic environment
without making electromagnetic perturbations over anything in that
environment».
Voltampere is the unit of the apparent power in alternating current.
In the direct current is almost equal to the real power but in the
alternating current it can be different depending on the power factor.
The voltamperes are arithmetic product of the multiplication between
the voltage and current.
LCD are the English acronyms of Liquid Crystal Display.
A serial port is a communication interface among computers and peri
pherals, where the data is transmitted bit by bit and sending one bit
only every time, meanwhile the parallel port sends several bits at the
same time.
It is the acronym of the words modulator/demodulator. Modulador
sends a constant analogical signal called holder. Generally, it is a simple
sinewave. When digital data needs to be sent, it is modified any
characteristic of the holder signal, therefore it is stating if it is sending
a «zero» or «one».
A circuit breaker is based in the operation of two effects made by the
electrical current circulation in a circuit, the magnetic and thermal
(Joule effect). So, the device has two parts, an electromagnet and a
bimetal plate, connected in series and the current is circulating through
them to the load.
LAN is the acronym of Local Area Network or just Local Network. A
local network interconnects several computers and peripherals. Its
extension is physically limited to one building or to one surrounding of
a few kilometers. Its most extended application is the interconnection
of personal computers and workstations in offices, factories, etc; to
share resources and to exchange data and applications.
It is the acronym of Automatic Voltage Regulator, and it is a device
ready to stabilize the output electrical voltage to preset values (accuracy)
in front of fluctuations at its input (input range).
It is the time, previously specified, during which the UPS is able to supply
a fixed voltage and frequency and a certain current to the loads connected
to is output.
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