Cisco 1552 Series, Руководство по установке

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Cisco Aironet 1552 Series for Hazardous Locations Installation Guide
O
omni-directional
This typically refers to a primarily circular antenna radiation pattern.
OFDM
Orthogonal frequency division multiplex is a modulation technique used by
IEEE 802.11a-compliant wireless LANs for transmission at 6, 9, 12, 18, 24, 36,
48, and 54 Mb/s.
P
packet
A basic message unit for communication across a network. A packet usually includes routing
information, data, and sometimes error detection information.
Q
QPSK
Quadruple phase shift keying is a modulation technique used by IEEE
802.11b-compliant wireless LANs for transmission at 2 Mb/s.
R
range
A linear measure of the distance that a transmitter can send a signal.
RAP
Root Access Point
receiver sensitivity
A measurement of the weakest signal a receiver can receive and still correctly
translate it into data.
RF
Radio frequency. A generic term for radio-based technology.
RP-TNC
A connector type unique to Cisco Aironet radios and antennas. Part 15.203 of
the FCC rules covering spread spectrum devices limits the types of antennas that
may be used with transmission equipment. In compliance with this rule, Cisco
Aironet, like all other wireless LAN providers, equips its radios and antennas
with a unique connector to prevent attachment of non-approved antennas to
radios.