User's Manual

Table Of Contents
TB9400 Installation and Operation Manual 121
© Tait Limited December 2013 (Draft)
CWID
Continuous Wave Identification is a method of automatically identifying
the base station using a Morse code. Continuous wave means transmission
of a signal with a single frequency that is either on or off, as opposed to a
modulated carrier.
DAC Digital-to-Analog Converter. A device for converting a digital signal to an
analog signal that represents the same information.
DDC Digital Down Converter. A device which converts the digitized IF signal of
the receiver down to a lower frequency (complex baseband) to suit the DSP.
dispatcher A person who gives official instructions by radio to one or more SU users.
dotted quad A method for writing IPv4 addresses. The form is DDD.DDD.DDD.DDD
where DDD is an 8-bit decimal number.
downlink The transmission path from fixed equipment to SUs.
DSP Digital Signal Processor.
duplex Providing transmission and reception in both directions simultaneously.
duty cycle Used in relation to the PA, it is the proportion of time (expressed as a
percentage) during which the PA is transmitting.
EIA Electronic Industries Alliance. Accredited by the American National
Standards Institute (ANSI) and responsible for developing
telecommunications and electronics standards in the USA.
EMC Electromagnetic Compatibility. The ability of equipment to operate in its
electromagnetic environment without creating interference with other
devices.
ETSI European Telecommunications Standards Institute. The non-profit
organization responsible for producing European telecommunications
standards.
failsoft mode An optional operational mode of Tait P25 trunked networks. It comes into
effect when the channel group loses all connection to the trunking site
controller.
FCC Federal Communications Commission. The FCC is an independent United
States government agency that regulates interstate and international radio
communications.