Hmm, the frequency mode sigma is the same as the TI mode sigma for 200*tau. That is if I take the sigma at 200*tau from the TI mode I have the same figure of the frequency mode. Maybe the frequency mode 2 seconds sample time uses 100 averages per second.
On Tue, Oct 2, 2012 at 1:50 PM, Timeok <[email protected]> wrote: > correction: HP53132A > > > timeok > > Il 2012-10-02 13:29 Timeok ha scritto: > > test using HP53123A: >> The pink line is the noise floor using the TI mode >> The blue line is the noise floor using the Frequency mode (gate 2 sec) >> The other two line are the same oscillator, an HP105B tested with >> both the modes. >> As you can see the range between 1 and 200 sec is "totally >> compromised" by the system noise floor using the TI method. >> The approximation using the freq mode can be anyway usefull to make a >> comparatinon between two source. >> I suppose to have right measurements, without any restriction we have >> to use the Timepod or other high level instruments than this kind of >> counters. >> >> Luciano >> > > -- > > > ______________________________**_________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to https://www.febo.com/cgi-bin/** > mailman/listinfo/time-nuts<https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts> > and follow the instructions there. > _______________________________________________ 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.
