Motorola APX 5000 Service Manual page 427

Glossary
Term
Megahertz
microcontroller unit
MISO
MOSI
multiplexer
MUX
night operation
night vision
NiMH
nv
OMPAC
open architecture
oscillator
OSW
OTAR
outbound signaling
word
over-molded pad-
array carrier
over-the-air rekeying
One million cycles per second. Used especially as a radio-frequency
unit.
Also written as µC. A microprocessor that contains RAM and ROM
components, as well as communications and programming components
and peripherals.
See Master In Slave Out.
See Master Out Slave In.
An electronic device that combines several signals for transmission on
some shared medium (e.g., a telephone wire).
See multiplexer.
A display mode intended for un-aided eye-sight in dark environments.
This is accomplished by a reduced brightness level of the keypad, front
and top displays. Also, an inverted color scheme utilizing red text, red
numbers, and red icons on a black background at two low levels of
backlighting.
A display mode intended for equipment aided eye-sight in dark
environments, typically using some form of Night Vision Gear. This is
accomplished by a significantly reduced brightness level of the keypad,
front and top displays. Also, an inverted color scheme utilizing red text,
red numbers, and red icons on a black background at three ultra-low
levels of backlighting.
Nickel-metal-hydride.
See night vision.
See over-molded pad-array carrier.
A controller configuration that utilizes a microprocessor with extended
ROM, RAM, and EEPROM.
An electronic device that produces alternating electric current and
commonly employs tuned circuits and amplifying components.
See outbound signaling word.
See over-the-air rekeying.
Data transmitted on the control channel from the central controller to the
subscriber unit.
A Motorola custom IC package, distinguished by the presence of solder
balls on the bottom pads.
Allows the dispatcher to remotely reprogram the encryption keys in the
radio.
Definition
Glossary-5