Redline Communications Inc. AN80IA 用户手册
Red
CONNEX
TM
AN-80i
PMP
User Manual
70-00072-01-03
Proprietary Redline Communications © 2007
March 19, 2007
Page 59 of 60
Term
Definition
obstructions within the first Fresnel zone.
obstructions within the first Fresnel zone.
MAC
Media Access Control. A unique number assigned to a network device.
Corresponds to ISO Network Model Layer 2 data link layer.
Corresponds to ISO Network Model Layer 2 data link layer.
MHz
Megahertz. 1,000,000 Hz
Modem
MOdulator/DEModulator. A hardware device that converts digital data
into analog and vice versa.
into analog and vice versa.
Modulation Any of several techniques for combining user information with a
transmitter carrier signal.
Multipath
The radio echoes created as a radio signal bounces off objects.
NVRAM
Non-volatile RAM. System parameters are stored in NVRAM. This data is
not affected by powering off the system.
not affected by powering off the system.
NLOS
Non Line Of Sight. Completely obstructed path between two antennas.
OFDM
Orthogonal Frequency Division Multiplexing. OFDM spreads data to be
transmitted over a large number of orthogonal carriers.
transmitted over a large number of orthogonal carriers.
OLOS
Optical Line Of Sight. A clear direct path between two antennas, with
obstructions within the first Fresnel zone.
obstructions within the first Fresnel zone.
Packet
A bundle of data organized in a specific way for transmission. The three
principal elements of a packet include the header, the text, and the trailer
(error detection and correction bits).
principal elements of a packet include the header, the text, and the trailer
(error detection and correction bits).
PHY
Physical Layer. Provides for the transmission of data through a
communications channel by defining the electrical, mechanical, and
procedural specifications.
communications channel by defining the electrical, mechanical, and
procedural specifications.
PMP
Point to Multipoint
PTP
Point to Point
QAM
Quadrature Amplitude Modulation
QPSK
Quadrature Phase Shift Keying
Receiver
Sensitivity
Sensitivity
A measurement of the weakest signal a receiver can receive and still
correctly translate it into data.
correctly translate it into data.
RF Radio
Frequency
Rx Receiver
S/N
S/N
Signal to Noise Ratio
SINADR
Signal to noise and distortion ratio.
TCP/IP
Transmission Control Protocol/Internet Protocol
The standard set of protocols used by the Internet for transferring
information between computers, handsets, and other devices.
The standard set of protocols used by the Internet for transferring
information between computers, handsets, and other devices.
TFTP
Trivial File Transfer Protocol
Tx Transmitter
UBR
UBR
Uncoded Burst Rate