Bob, It would be easy to start a timer when the TBolt reaches a certain state, and send specific commands after certain times, and restart the sequence if the TBolt loses lock.
The processor's clock has 0.5% accuracy, which should be sufficient. There is plenty of code space left in the GPSMon processor. Didier ------------------------ Sent from my BlackBerry Wireless thingy while I do other things... -----Original Message----- From: Bob Camp <[email protected]> Sender: [email protected] Date: Wed, 7 Jul 2010 22:08:33 To: Discussion of precise time and frequency measurement<[email protected]> Reply-To: Discussion of precise time and frequency measurement <[email protected]> Subject: Re: [time-nuts] Auto TBolt TC Adjust Hi I suspect that I only need to decode one of the packets and send one of three or four specific strings. I could send them "blind" and hope they work, or actually confirm they took effect. Either way it should fit in a pretty small chip. Thanks! Bob On Jul 7, 2010, at 9:55 PM, Didier Juges wrote: > That could be done easily with my GPSMon project, just add code :) > > The project decodes the TSIP binary format, so it would not be so hard to > decode the packets you need. At the moment, the project does not talk to the > TBolt, and I forgot if the Tx routines are in the code. If they are not and > someone is interested, I'll send you the code. > > It's open source by the way. > > http://www.ko4bb.com/Timing/GPSMonitor/ > > Didier KO4BB > > ------Original Message------ > From: Bob Camp > Sender: [email protected] > To: Time-Nuts > ReplyTo: Time-Nuts > Subject: [time-nuts] Auto TBolt TC Adjust > Sent: Jul 7, 2010 8:22 PM > > Hi > >> From looking at the numbers on a set of TBolt's it's apparent that adjusting >> the time constant after they have been on power for a while is a good idea. >> Something like: > > Start at 10 seconds until pps is within 10 ns for 5 minutes > Run at 50 seconds until the same condition is met > Bump to 200 seconds, check > Bump to 1000 seconds > > More or less you would be making the TBolt do a dumbed down version of what > the Z38xx's do. > > Before I go out and build up a gizmo to read TSIP and shoot the commands to > the TBolt, I thought I'd see if somebody had already made one of these up. > Anybody have one of these already? > > Thanks! > > Bob > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > > > ------------------------ > Sent from my BlackBerry Wireless thingy while I do other things... > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
