Tom Van Baak wrote: >> This raises some questions on the interpreatation of the M12+T and >> Jupiter-T receiver specs. >> >> Some measurements are required in order to settle the questions once and >> for all. >> >> Can anyone that has either or both of these receivers make the required >> measurements? >> > > We know the sawtooth correction message only comes once > a second, for both receivers, right? That may be a clue. > > /tvb > > > Tom
The picket fence technique can be used to timestamp the leading edges of the 100Hz (or 10kHz for the Jupiter -T) outputs. The 100Hz signal being used to start the TIC whilst a 1kHz signal derived from a low noise OCXO output is used to STOP the TIC. Sawtooth error should then be able to be derived from the measurements after removing phase wraps. ADEV could then be plotted for Tau ranging from 10ms to say 100s. With a 10KHz signal the STOP input frequency would need to be around 100KHz or so. Any known frequency >= 2*(Start frequency) will suffice. Bruce _______________________________________________ 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.