AUX
auxiliary.
B
baseband
The original band of frequencies occupied by the signal before it modulates the carrier
frequency to form the transmitted signal. Characteristic of any network technology that uses a
single carrier frequency and requires all stations attached to the network to participate in
every transmission.
baud (Bd)
A measure of signaling rate based on the number of signaling events per unit of time.
beamwidth
The included angle between two rays (usually the half-power points) on the radiation pattern,
which includes the maximum lobe, of an antenna.
BIOS
basic input/output system.
blanking level
The amplitude of the front and back porches of the composite video signal. The blanking level
separates the range containing picture information from the range containing synchronization
information.
BNC
A coaxial connector that uses two bayonet lugs on the side of the female connector. BNC
stands for Bayonet Neill Concelman and is named after Amphenol engineer Carl Concelman.
BPF
bandpass filter.
BW
bandwidth. A measure of the information-carrying capacity of a communications channel, for
example the range of usable frequencies that can be carried by a CATV system. The
bandwidth corresponds to the difference between the lowest and highest frequency that can
be carried by the channel.
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