On Thu, Oct 4, 2018 at 11:00 AM Magnus Danielson <[email protected]> wrote:
> Regardless, the 53230A does a filtered frequency estimation, which is > great for achieving high precision frequency measures quickly, but not > good for ADEV measures, as it introduces a bias due to the lower > bandwidth of the filtering as compared to the sampling interval. > Dead-time gaps biases also comes in. > True - but be aware that the *first sample* returned from the instrument, when fetched using "READ", will also be biased in an absolute sense - the frequency reported will systematically be too high or too low (the magnitude and direction of the error depending primarily on gate time, from what I've seen). So even when using this mode to only look at high resolution "absolute frequency measurements", it is easy to get bitten if the data is collected using a computer. BR, Ole _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
