Motorola M12 Oncore User Manual page 104

Motorola GPS Products
M12 Oncore User' s Guide Supplement
Revision 1.0 01/25/00
GPVTG (TRACK MADE GOOD AND GROUND SPEED)
This command enables the GPVTG Track Made Good and Ground Speed message
and determines the rate at which the information is transmitted. The periodic rate
field (yyyy) instructs the receiver either to output this message once (polled), or to
output this message at the indicated update rate (continuously). Once the receiver is
set to continuous output, the continuous flow can be stopped by sending a one-time
(polled) output request. The receiver will output the response one final time, and
then terminate any further message outputs.
If the receiver is not computing a position fix, all numeric fields (a.a, c.c, e.e, g.g)
will be nulled.
NOTE: The magnetic track (c.c) will always be null since the M12 Oncore does not
have this information.
Default mode: Disabled
104