On my Oscilloquartz GPSDO, the 10 MHz output goes low at very close to the same time as the 1 PPS output goes high.
On my Fury, the 10 MHz sine wave is just dropping off of its max high voltage as the 1 PPS goes high. The 10 MHz CMOS output goes high just shortly before the 1 PPS. What do other GPSDOs do? Clearly, any device trying to latch the 1 PPS signal using the 10 MHz clock will need to choose which clock edge to use, depending on which type of GPSDO is used. How is this normally handled? Also, I noticed that the TADD-1 has some weird distortion of a 10 MHz sine wave. It turns it into a sort of a 3 valued square wave. Essentially, it stops and dwells at the midpoint for a while instead of making a sharp transition. I think this would be bad if that dwell point is close to the threshold for the receiving device. Has anyone else noticed this? Thanks, Matt _______________________________________________ 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.
