In the uBlox protocol specifications there is an antCableDelay, an rfGroupDelay, a userConfigDelay, all are 2's complement quantities, no bounds given in the manual.
On Tue, May 22, 2018 at 4:55 AM, Mark Sims <hol...@hotmail.com> wrote: > A related question is: Do you use positive or negative numbers to set the > antenna cable delay value? Again, most GPS receiver documentation does not > say. I think that I've only seen it explicitly mentioned in the Trimble > documentation and the Oscilloquartz Star-4 documentation. > > Also there is the question of does the receiver time message come out before > or after the 1PPS and what is the message offset time from the 1PPS? Again, > rarely documented by the receiver manufacturer. Lady Heather can measure > those (if the operating system clock is accurately set) Heather uses the > message time offset to adjust the displayed time or get the audible "tick > clock" aligned to true time. > > Heather has a table of typical message offsets for the supported receivers, > but measuring and setting the value for your receiver/computer/serial port > can improve things. > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
