Installation Manual
MN003109A01_aa
Glossary-2
GPS Global Positioning System: U.S.A.’s Satellite based radio navigation
system developed by the U.S. Department of Defense and operated by
the U.S. Air Force, which consists of at least 24 operational satellites
which fly in medium Earth orbit at an altitude of approximately 20,180
km. Each satellite circles the Earth twice a day. GPS provides Time and
Location to anywhere on Earth, where there is an unobstructed line of
sight to four or more GPS satellites. A GPS receiver triangulates its
position using these satellites.
kHz See kilohertz.
kilohertz One thousand cycles per second. Used especially as a radio-frequency
unit.
MCU See microcontroller unit.
MHz See Megahertz.
Megahertz One million cycles per second. Used especially as a radio-frequency
unit.
microcontroller unit Also written as μC. A microprocessor that contains RAM and ROM
components, as well as communications and programming components
and peripherals.
PA Power amplifier.
paging One-way communication that alerts the receiver to retrieve a message.
PTT See Push-to-Talk.
Publication Manual
Revision
A publication that provides supplemental information for its parent
publication before it is revised and reissued.
Push-to-Talk The switch or button that causes the radio to transmit when pressed.
When the PTT switch or button is released, the unit returns to standby
or receive operation.
radio frequency The portion of the electromagnetic spectrum between audio sound and
infrared light (approximately 10 kHz to 10 GHz).
receiver Electronic device that amplifies RF signals. A receiver separates the
audio signal from the RF carrier, amplifies it, and converts it back to the
original sound waves.
registers Short-term data-storage circuits within the microcontroller unit or
programmable logic IC.
RESET Reset line: an input to the microcontroller that restarts execution.
RF See radio frequency.
RX Receive.
Term Definition
Draft
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