Definitions
122 Manpack Transceiver 2110 series Repair Guide
Glossary
THD total harmonic distortion
Tx transmit, transmitter
UART universal asynchronous receiver/transmitter
USB upper sideband
VCO voltage-controlled oscillator
VSWR voltage standing wave ratio
This term... Means...
channel A frequency range over which signals can be transmitted and
received.
coder/decoder A device combining analogue to digital and digital to analogue
converters.
digital signal
processor (DSP)
A microprocessor-like device that is designed to provide real-time
processing of high-volume digital data streams.
Easitalk
®
A feature that enables the user to reduce the level of background
noise that is present when listening to a channel.
frequency The number of cycles per second of a radio wave, usually
expressed in kilohertz.
front panel A panel on the transceiver that is used to control the functions of
the transceiver. It consists of a display, keypad and connectors.
handset A hand-held device that consists of a microphone, PTT button, and
earphone.
PTT button Press-to-talk button, located on the left side of the handset. This
button enables you to communicate during voice calls, switch mute
off, cancel voice calls prior to the point where voice can be
transmitted, cancel calls where data is being transmitted, and exit
out of editable screens without saving changes.
transceiver unit The unit in a transceiver that modulates audio signals onto radio
frequencies that can be transmitted on air, and demodulates the
radio frequencies it receives into audio signals.
This acronym... Means...
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