Tait TB9100, Installation And Operation Manual

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TB9100 Installation and Operation Manual
Glossary135
© Tait Electronics Limited May 2006
digital input value
A value that the base station computes from the state of a
configured number of digital inputs. The digital input value is an
input into Task Manager.
digital P25 mode
A mode of operation in which the RF interface transmits and
receives digital signal as defined by the APCO P25 CAI. The
digital line sends and receives IMBE speech packets.
dispatcher
A dispatcher is a person who gives official instructions by radio
to a fleet.
dotted quad
A method for writing IPv4 addresses. The form is
DDD.DDD.DDD.DDD where DDD is an 8-bit decimal
number.
DSP
Digital Signal Processor.
dual mode
The ability to operate as a transceiver in two different ways:
analog FM and P25 digital. Dual mode equipment can be
configured to support either mode or to switch between modes
from one over to another.
duplex channel
group
The duplex channel group has two voters at each channel group
member, which allows for two directions of speech flow
simultaneously. The selected inbound stream can be sent to all
line interfaces and control speakers at the same time as an
outbound stream is selected and sent to all RF interfaces (see
inbound and outbound).
duty cycle
Duty cycle is used in relation to the PA. It is the proportion of
time (expressed as a percentage) during which the PA is operated.
E
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.