TB9400 Installation and Operation Manual
139
© Tait International Limited November 2019
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.
dispatcher
A person who gives official instructions by radio to one or more SU users.
downlink
The transmission path from fixed equipment to SUs.
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.
FCC
Federal Communications Commission. The FCC is an independent United
States government agency that regulates interstate and international radio
communications.
feature licence key
The unique set of digits belonging to a licence which is programmed into
the base station to enable a feature set.
flash
Electrically block-erasable and programmable read-only memory.
FM
Frequency Modulation. Often used as an adjective to denote analog radio
transmission.
frequency band
The range of frequencies that the equipment is capable of operating on.
front panel
The cover over the front of the base station containing the indicator LEDs,
four-line LCD display, user controls and cooling fans.