From: Tony
As I said, I measured the pulses at either 104ns (9.6MHz), with some
being shorter at 84ns. I've just repeated the measurements on a Reyax
RYN25AI (UBLOX MAX-7C) with the same results. Actually the scope
measures the longer pulses at either 104.3ns or 105.2ns and the shorter
pulses at 82.89ns or 83.82ns. Since it is a 1GS/s scope, the differences
are almost certainly just the scope sampling uncertainties rather than
actual jitter in the clock.
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Tony, any chance you could do a quick measurement at 8 MHz - I think that
should be a more constant period. That's if I understood the data sheet
correctly, and what applied to earlier models applies also to the ublox 7!
Thanks,
David
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