Street Atlas USA 2005 User Guide
18
Maximum Speed field
When GPS tracking, displays your maximum speed.
MDT
Mountain daylight time
MST
Mountain standard time
NMEA
National Marine Electronics Association
PDOP
The measure of how much the error in the position estimate produced from satellite range measurements is
amplified by a poor arrangement of satellites (with respect to the receiver antenna).
Port
A hardware interface used by a computer to communicate with an external device.
PPS
Precise Positioning System; radio signals available to military and other authorized personnel for GPS.
Proxy server
An application that breaks the connection between sender and receiver. All input is forwarded out a different port,
closing a straight path between two networks and preventing a cracker from obtaining internal addresses and details
of a private network. Proxy servers are available for common Internet services; for example, an HTTP proxy is used
for Web access, and an SMTP proxy is used for e-mail.
Real time
The actual time during which something takes place.
Receiver
Hardware device that receives data, such as from satellites.
Snapping
Attaching a point on one draw object to the exact coordinates of a point in another draw object. You can snap the
central shape point of an arc to another object or snap a routable road to an existing road, enabling routing from the
drawn road to the road system on the map database .
Speed field
When GPS tracking, displays your speed as you travel.
Third-party GPS device
A GPS receiver manufactured by a company other than DeLorme, such as GARMIN, Magellan, Brunton, Lowrance,
Trimble, and so forth.
Time field
When connected to a DeLorme GPS receiver, displays the Greenwich mean time.
Time to the End of the Route field
When GPS tracking, displays the time from your current position to your Finish (based on your current speed).
Time to Next Turn field
When tracking, displays the time from your current position to your next turn or route change (based on your current
speed).
