Motorola SSETM 5000 - Manual (Page 217)

6881094C12-A November 11, 2004
Glossary-9
termination An impedance, often resistive, that is connected to a radio as a dummy
load, for test purposes.
thin small-outline
package A type of dynamic random-access memory (DRAM) package that is
commonly used in memory applications.
time-out timer A timer that limits the length of a transmission.
TOT See time-out timer.
transceiver Transmitter-receiver. A device that both transmits and receives analog
or digital signals. Also abbreviated as XCVR.
transmitter Electronic equipment that generates and amplifies an RF carrier signal,
modulates the signal, and then radiates it into space.
TSOP See thin small-outline package.
TX Transmit.
UART See also Universal Asynchronous Receiver Transmitter.
UHF Ultra-High Frequency.
Universal
Asynchronous
Receiver Transmitter A microchip with programming that controls a computer's interface to its
attached serial devices.
Universal Serial Bus An external bus standard that supports data transfer rates of 12 Mbps.
USB See Universal Serial Bus.
VCO See voltage-controlled oscillator.
VHF Very-High Frequency.
VOCON See vocoder/controller.
vocoder An electronic device for synthesizing speech by implementing a
compression algorithm particular to voice. See also voice encoder.
vocoder/controller A PC board that contains a radio’s microcontroller, DSP, memory, audio
and power functions, and interface support circuitry.
voice encoder The DSP-based system for digitally processing analog signals, and
includes the capabilities of performing voice compression algorithms or
voice encoding. See also vocoder.
voltage The electric pressure between two points, which is capable of producing
current flow when there is a closed circuit between the two points.
voltage-controlled
oscillator An oscillator in which the frequency of oscillation can be varied by
changing a control voltage.
XCVR See transceiver.
Term Definition