[time-nuts] another Ebay mixup

John Ackermann N8UR jra at febo.com
Sat Jun 9 06:59:12 EDT 2007

SAIDJACK at aol.com said the following on 06/09/2007 02:06 AM:

> The standard deviation of a 15ns cable-delayed signal is measured as 50ps  in 
> 100 averages.
> Is that a good number for these units? I was expecting <20ps.

When I do cable measurements, I normally see around 35 to 40 ps over 1
to 100 k measurements (I usually test at 1000pps to speed things up a
bit).  So, I'd say that your numbers may be a little bit high, but not
totally out of whack.


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