GPS Settings
Form to fill in Settings related to GPS
COM: fill in number of the COM port your
GPS receiver is connected
Baud: Baud rate, default: 4800 or more if many
NEMA sentences are transmitted
PPS : Pulse per second, cable should be
connected to CTS (clear to send)
or to DSR, if PPS is not supported
by your receiver, try RXCHAR (less exact, about 35? ms later )
Seconds to get time: about 21 or more, program checks 21 PPS to
get the GPS time.
System timer minutes ahead UT: can not be changed in this form, is
set by WinScan (can be changed at "Change Time and Date")
This is only related to the system timer,
the WinScan timer must be always at UT
Additional Offset: is added, when setting Timers, only if there
is a time lag transmitting the PPS, should be 0.0 elsewhere
Auto:
use "Auto: GetGPSTime, Set Timers" in the GPS-Form .
try's many times to get valid data and sets the timers after that (may take a while).
GPGSA or GPGSV is needed, if "number of sats used >=" is set to a value >0
Data is valid: if checked, timers are only set if the data is valid (no receiver warning)
number of sats used >= : timers are only set, if number of sats used by the receiver is
>= this number , try 3 or 0
Offset <= : set timers only, if the offset of the GPS Time and the WinScanTimer is smaller or equal.
Try 20.0 if the WinScanTimer is set to the current time, or a huge value if the current time of the WinScanTimer is uncertain.
SetSystemTimer: if checked, the System Timer will be set.
SetWinScanTimer: if checked, the WinScanTimer will be set
Frequency of WinScanTimer: If SetWinScanTimer is also checked,
WinScanTimer and Frequency will be set.