Motorola SSETM 5000 service manual Kvl

Glossary-4

Term	Definition
frequency	Number of times a complete electromagnetic-wave cycle occurs in a
	fixed unit of time (usually one second).
frequency	This unit generates ultra-stable, low-phase noise master clock and other
generation unit	derived synchronization clocks that are distributed throughout the
	communication network.
General-Purpose	Pins whose function is programmable.
Input/Output
GPIO	See General-Purpose Input/Output.
ground	In an electrical circuit, a common return path that (a) may not
	necessarily be connected to earth and (b) is the zero-voltage reference
	level for the equipment or system.
ground plane	An electrically conductive surface that serves as the near-field reflection
	point for an antenna.
host code	Object code executed by the host processor in a subscriber radio. The
	host is responsible for control-oriented tasks such as decoding and
	responding to user inputs.
IC	See integrated circuit.
IF	Intermediate Frequency.
impedance	The total opposition, including both resistance and reactance, that a
	circuit offers to the flow of alternating current (AC) or any other varying
	current at a particular frequency.
inbound signaling	Data transmitted on the control channel from a subscriber unit to the
word	central control unit.
integrated circuit	An assembly of interconnected components on a small semiconductor
	chip, usually made of silicon. One chip can contain millions of
	microscopic components and perform many functions.
ISW	See inbound signaling word.
key-variable loader	A device used to load encryption keys into a radio.
kHz	See kilohertz.
kilohertz	One thousand cycles per second. Used especially as a radio-frequency
	unit.
KVL	See key-variable loader.
LCD	See liquid-crystal display.
LED	See LED.
light emitting diode	An electronic device that lights up when electricity is passed through it.

November 11, 2004 6881094C12-A