I/O
Input or Output
kHz
kilohertz: One thousand cycles per second. Used especially as a
radio-frequency unit.
LCD
Liquid-Crystal Display: An LCD uses two sheets of polarizing material with a
liquid-crystal solution between them. An electric current passed through the
liquid causes the crystals to align so that light cannot pass through them.
LED
Light Emitting Diode: An electronic device that lights up when electricity is
passed through it.
MDC
Motorola Data Communications. 1200 or 4800 baud data signalling scheme.
MHz
Megahertz: One million cycles per second. Used especially as a
radio-frequency unit.
MISO
Master In, Slave Out.
MOSI
Master Out, Slave In.
PA
Power Amplifier that transmits final RF signal to transmit antenna
PC Board
Printed Circuit Board. Also referred to as a PCB.
PFC
Power Factor Correction
PL
Private-Line Tone Squelch: A continuous sub-audible tone that is transmitted along with the carrier.
Programming Cable
A cable that allows the CPS to communicate directly with the radio using RS232
PTT
Glossary of Terms and Acronyms
Motorola Solutions Confidential
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