> For question for TomVB; is the shading in the raw plots the noise floor > of the instrumentation ?
Yes, the noise floor of the instrument, taking into account the measurement time (which was one hour). Note the noise of the reference itself isn't removed; for those plots I used a HP 58503B as the reference. /tvb > Brian > > [EMAIL PROTECTED] wrote: >> Hello Ulrich, >> >> This is so true. See Tom's phase noise tests of a Russian Rubidium >> prototype >> disciplined by a Fury GPSDO. Lot's of times there is not much space to put >> a >> good OCXO inside the Rb's case. >> >> BTW: using the Fury's 1PPS input, that unit can be used as a cleanup loop >> for dirty Rb's that have 1PPS outputs. >> >> _http://www.leapsecond.com/pages/fury/phase.htm_ >> (http://www.leapsecond.com/pages/fury/phase.htm) >> >> I just fired up my FTS1200-100 tonight for testing, it's dead on 5MHz. Does >> anyone have a good circuit idea to go from 5MHz to 10MHz? I was thinking of >> something similar to the HP5370B input circuit - basically a tuned amplifier >> >> locking onto the 10MHz overtone. >> >> bye, >> Said >> >> >> In a message dated 4/19/2008 06:33:21 Pacific Daylight Time, >> [EMAIL PROTECTED] writes: >> >> temperature related frequency changes in a typical flat. Given the fact >> that most rbs's stability at short observation times is worse that that >> of good xtal oscillators this makes the FTS1200 the best choice in my >> GPSDO despite of owning an LPRO101 and an FRK-L. >> >> Best regards >> Ulrich _______________________________________________ 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.
