Hi Didier: I seem to remember that one or more of the HP boxes that used the 6/8 channel Motorola GPS receivers used a secret method of making use of the sawtooth error information. Some trick was needed because there was a bug that caused the sawtooth to be wrong every now and then and it always was wrong in the same polarity. Therefore you could not average using the sawtooth. Most applications just ignored the sawtooth output and averaged.
But if the Z3801 is using the sawtooth, and you replace the receiver with another model, then there will be a problem. A fix would be if someone would come clean and tell us how HP got around the sawtooth bug in detail, then you could take the output from an M12+T and recreate a data stream that would look just like the 6/8 channel unit including the buggy sawtooth byte. Have Fun, Brooke Clarke http://www.PRC68.com http://www.precisionclock.com Didier Juges wrote: > Here are a few questions about reusing a Z3801A main board. > > Would the Z3801A work with another GPS receiver? > In other words, does the board talk to the GPS engine via the serial > port, other than receiving the 1 PPS? > > If it does talk to the GPS receiver, which GPS receiver other than the > original 6 channel Oncore model would work with it (compatible command > structure)? > > Thanks in advance > > Didier KO4BB > > > _______________________________________________ > time-nuts mailing list > time-nuts@febo.com > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > _______________________________________________ time-nuts mailing list time-nuts@febo.com https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
