DDE Advise/Request Item Support
A destination application may set up DDE advises/requests directly to the
Geographic Tracker.
Supported DDE Advise/Request items include:
Latitude - the current latitude value
Longitude - the current longitude value
Eheight - the current ellipsoidal height value
Gheight - the current geoid height value
Speed - the current speed
Heading - the current heading
PDOP - the current PDOP value
Time - the current UTC or Local time
Depth - the current water depth in meters. This variable is only output if the
NMEA 0183 message type is selected and a serial port multiplexor is used to
interface to output from a depth sounder.
The units of the above item values are as specified from within the Set
Preferences dialog box.