User's Manual

DRAFT 1
TB9300 Installation and Operation Manual Glossary 117
© Tait Limited May 2013
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.
fallback mode An operational mode of TaitNet DMR trunked networks. It comes into
effect when the base station loses communication with the trunking node
controller. Fallback mode turns one of the base station’s two logical
channels into a control channel. In this mode the base station functions
almost as an open channel, available to all calls without requiring
authorization.
FCC Federal Communications Commission. The FCC is an independent United
States government agency that regulates interstate and international radio
communications.
feature code The alphanumeric code used to identify a feature set.
feature set A function or mode of operation of the base station which can be enabled
or disabled using the web interface. Each feature set requires a license to
be purchased from Tait before it can be enabled.
feature license key The unique set of digits belonging to a license which is programmed into
the base station to enable a feature set.
fill-in receiver An additional receiver placed within the coverage area of a base station to
receive MS transmissions that are too weak to be received by that base
station.
FLASH Electrically block-erasable and programmable read-only memory.