User's Manual

Table Of Contents
126 TB9400 Installation and Operation Manual
© Tait Limited December 2013 (Draft)
transmissions are made on the receive frequency programmed for the
channel.
RISC Reduced Instruction Set Computer. A type of microprocessor that
recognizes a relatively limited number of instructions. The reciters control
board has a RISC microprocessor.
router A router is an internetwork packet switch that switches data packets from
an input interface to an output interface. The interfaces can be of different
types.
RS-232 A protocol for serial communications between a DTE (data terminal
equipment) and a DCE (data communications equipment) device.
RS-485 An updated version of the RS-232 protocol for serial communications
between multiple devices.
RSSI Received Signal Strength Indicator is a level that indicates the strength of
the received signal.
RTP Real Time Protocol is an Internet protocol that supports the real-time
transmission of voice and data.
Rx Receiver.
satellite voter A channel group member that has delegated voting activity to a central
voter.
SAW filter Surface Acoustic Wave filter. A band pass filter that can be used to filter
both RF and IF frequencies. A SAW filter uses the piezoelectric effect to
turn the input signal into vibrations that are turned back into electrical
signals in the desired frequency range.
selectivity The ability of a radio receiver to select the wanted signal and reject
unwanted signals on adjacent channels (expressed as a ratio).
sensitivity The sensitivity of a radio receiver is the minimum input signal strength
required to provide a usable signal.
signaling profile A named set of configuration items related to signaling that can be applied
to any channel.
simplex Able to provide transmission and reception in only one direction at a time.