AEON Family User Guide
Commercial in Confidence
Video, Broadcast
100249
Revision: 1.0
Commercial in Confidence
Page
15-80
L
Definition
LOS
Line-of-sight propagation refers to electromagnetic radiation which travels in
a direct path from transmitter to receiver.
M
Definition
MHz
Megahertz is equal to 1,000,000 Hz.
mW
The milliwatt is equal to one thousandth (10
–3
) of a watt.
MPEG
Moving Pictures Experts Group is an organisation that sets the standards for
audio and video compression and transmission.
Modulation
To change the output of a transmitter in amplitude, phase or frequency in
accordance with the information to be transmitted. Data is superimposed on
a carrier current or wave by means of a process called modulation.
Multicast
Multicasting is sending data from a sender to multiple receivers where each
receiver signals that they
want
to receive the data.
N
Definition
NLOS
Non-line-of-sight propagation refers to electromagnetic radiation which
travels in a path which is obstructed by physical objects.
NTSC
National Television Systems Committee is the analogue television system
used mainly, but not exclusively, in the Americas.
Noise
Unwanted disturbance in an electrical signal.
O
Definition
Omnidirectional antenna An antenna whose radiation pattern shows equal radiation in all horizontal
directions.
Oscillation
A periodic, repetitive motion or set of values (voltage, current, velocity).
P
Definition
PAL
Phase Alternate Line is the analogue television system used mainly, but not
exclusively, throughout the world (see NTSC).
PTZ
Pan-tilt-zoom is a common way of referring to controllable cameras.
Propagation
A phenomenon by which any wave moves from one point to another; the travel
of electromagnetic waves through space or along a transmission line.
