PRORXD Broadcast Receiver User Guide
Commercial in Confidence
Broadcast Solutions, HD/SD Products,
PRORXD
100167
Revision: 7.0
Commercial in Confidence
Page 10-94
I
Means…
IP Address
Internet Protocol Address – A unique numeric ID for a device in a network.
IR
Infra-Red - Infrared (IR) radiation is electromagnetic radiation whose
wavelength is longer than that of visible light.
Impedance
The total opposition offered by a circuit or component to the flow of
alternating current.
L
Means…
LOS and NLOS
Line-of-sight propagation refers to electro-magnetic radiation including light
emissions moving in a straight line. The rays or waves are diffracted,
refracted, reflected, or absorbed by atmosphere and obstructions with
material and usually cannot move above the horizon or behind obstacles.
NLOS is Non Line-of-sight.
Load
A device that consumes electrical power.
Lux
The lux (symbol: lx) is the SI unit of illuminance and luminous emittance. It
is used in photometry as a measure of the
apparent
intensity of light hitting
or passing through a surface.
M
Means…
MHz
Megahertz is the same as 1,000,000 Hz
mW
Milliwatt - The milliwatt (symbol: mW) is equal to one thousandth (10
–3
) of a
watt.
MPEG
Moving Pictures Experts Group.
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 procedure
called modulation. Signal modulation can be done in one of two ways:
analogue and digital. In recent years, digital modulation has been getting
more usual, while analogue modulation methods have been used less. There
continues to be plenty of analogue signals around, but, and they will
probably not become totally extinct.
Multicast
Multicasting is sending data from a sender to multiple receivers where each
receiver signals that they
want
to receive the data.
N
Means…
nm
A nanometre (American spelling: nanometer; symbol nm) is a unit of length
in the metric system, equal to one billionth of a metre (i.e., 10
-9
m or one
millionth of a millimetre).
