Trimble Outdoors AcutimeTM2000 Synchronization Kit, Part Number 45005-00-ENG manual Dce

	Glossary
C/A code	The Coarse/Acquisition code. This is the civilian code made
	available by the Department of Defense. It is subject to
	selective availability (SA). Users can reduce the effects of
	SA by using differential GPS.
carrier	The radio signal on which information is carried. The carrier
	can be sensed to determine the presence of a signal.
channel	Either a single frequency or a pair of radio frequencies used
	as a communication path.
chip	The length of time to transmit either a zero or a one in a
	binary pulse code.
chip rate	Number of chips per second (e.g., C/A code = 1.023 MHz).
configuration	A set of conditions or parameters that define the structure of
	an item. In regards to Placer, a configuration defines the
	GPS processing and characteristics of the RS-232 interface
	ports. The term configuration can also define the hardware
	components that comprise a subsystem or system.
data bits	The bits in a byte of data which carry the actual information.
datum	A mathematical model of the earth. Many local datums
	model the earth for a small region: for example, Tokyo
	datum, Alaska, NAD-27 (North America). Others, such as
	WGS-84, model the whole earth.
DCE	Data Communications Equipment. The equipment that
	provides the functions required to establish, maintain, and
	terminate a communication connection. Any equipment that
	connects to DTE using an RS-232 or CCITT V.24 standard
	interface.
default setting	A preset or initial value that is assumed to be the preferred
	or appropriate selection for most situations. The Placer GPS
	sensor is shipped with factory default configuration settings;
	the settings were determined by Trimble.

Acutime 2000 Synchronization Kit User Guide Glossary-3