User Guide

NETNode Operations Guide
Commercial in
Confidence
IP Mesh Systems
000-130
R1.8 2015-07-24
Commercial in
Confidence
Page 6-109
R
Means…
RTSP
Real Time Streaming Protocol (RTSP) is a network
control protocol designed for operation in entertainment and
communications systems to control streaming media servers. The
protocol is used for establishing and controlling media sessions
between end points. Clients of media servers issue VCR-like
commands, such as play and pause, to let real-time control of
playback of media files from the server.
Rx
Receiver, an electronic device that changes a radio signal from a
transmitter into useful information.
Radiate
To transmit RF energy.
Radio Frequency
Frequency of electrical energy capable of propagation into space
(usually above 20kHz). Also called RF.
S
Means…
SNR
Signal to Noise Ratio is an electrical engineering measurement
specified as the ratio of a signal power to the noise power
corrupting the signal.
Signal-to-noise ratio compares the level of a desired signal (such
as music) to the level of background noise. The higher the ratio,
the less obtrusive the background noise is.
Shannon Limit
The Shannon limit or Shannon capacity of a communications
channel is the theoretical maximum information transfer rate of
the channel, for a noise level.
Signal
In electronics, a signal is an electrical current or electromagnetic
field used to send data from one area to a second area. The
simplest type of signal is a direct current (DC) that is switched on
and off; this is the principle by which the earliest telegraph
worked. More complex signals consist of an alternating-current
(AC) or electromagnetic carrier that contains one or more data
streams.
Streaming
Streaming is the transmission of digital audio or video or the
listening and viewing of such data without first storing it.
T
Means…
Tx
A transmitter is an electronic device which, usually with the aid
of an antenna, propagates an electromagnetic signal such as
radio, television, or other telecommunications.