Glossary
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FLS-2600
ISA
Industry Standard Architecture
ISO
International Organization for Standardization. Commonly
believed to stand for International Standards Organization.
In fact, ISO is not an abbreviation—it is intended to signify
uniformity (derived from the Greek
iso
meaning “equal”).
ISO is responsible for many standards including those for
data communications and computing.
ITU
International Telecommunications Union. The ruling body
for telecommunications and the source of many network
standards.
jumper
Fiber-optic cable that has connectors terminated on both
ends. Used to connect two pieces of equipment, modules,
or components.
k
Abbreviation for kilo, which indicates 10
3
units.
LD
Laser diode
LED
Light emitting diode
loopback
Type of diagnostic test in which the transmitted signal is
returned to the sending device after passing through a
communications link or network.
M
Abbreviation for mega, which indicates 10
6
units.
m
Abbreviation for milli, which indicates 10
-3
units.
min
Minute
n
Abbreviation for nano, which indicates 10
-9
units.
n
Refractive index. For the silica glass used in optical fibers,
.
NIST
National Institute of Standards and Technology. U.S.
governmental body that provides the assistance in
developing standards. It was formerly the National Bureau of
Standards.
noise figure
A measure of the quality of an amplifier, defined as the ratio
of output to input SNRs.
n
1.465
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