Tait TB9100, Installation And Operation Manual

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132Glossary
TB9100 Installation and Operation Manual
© Tait Electronics Limited May 2006
B
Base station
In general, a radio receiver and transmitter that is located in a
specific place (at a site) that allows portable and mobile radio
terminals to communicate over a larger range. Specifically, Tait
TB9100 equipment in a subrack.
BCD
BCD (binary coded decimal) is a code in which a string of four
binary digits represents a decimal number.
BER
Bit Error Rate. A measure of the quality of digital transmission,
expressed as a percentage. The BER indicates the proportion of
errors in a transmission.
C
C4FM
Compatible Four-level Frequency Modulation. A modulation
scheme defined in the CAI standard for 12.5 kHz bandwidth.
CAI
Common Air Interface. The over-the-air data formats and
protocols defined by the APCO P25 committee.
Calibration
Software
The TB9100 Calibration Software is a utility for defining the
switching ranges of the receiver and the exciter and for flattening
the receiver response across its switching range. It can also be
used to calibrate TB9100 modules.
call
A complete exchange of information between two or more
parties. A call requires a receive signal path and a transmit signal
path. In trunked systems, a call is a conversation, made up of a
number of overs, but in conventional systems, a call is an over.
calling profile
A group of configuration settings that defines the properties of
the TB9100 analog line, which can be regarded as equivalent to
a radio on the network.
channel
A channel is:
1. A path through which signals can flow.
2. In the RF domain, a frequency pair (or just a single frequency
in a simplex system).
3. A set of configuration information that defines the frequency
pair and other related settings (a channel configuration).
Generally, ‘channel’ has this meaning in the CSS.