Anyone using an external 10 MHz clock is probably getting it from something like a Thunderbolt, Z3801, or homebrew GPS clock with a decent 10 MHz OCXO. Count on the external 10 MHz clock coming in at -135 dBc/Hz or better at 1 kHz, IMO, which when scaled to 100 MHz becomes -115 dBc/Hz at 1 kHz.

Bruce Matt Ettus wrote: > On my Oscilloquartz GPSDO, the 10 MHz output goes low at very close to > the same time as the 1 PPS output goes high. > > On my Fury, the 10 MHz sine wave is just dropping off of its max high > voltage as the 1 PPS goes high. The 10 MHz CMOS output goes high just > shortly before the 1 PPS. > > What do other GPSDOs do?

See, for example, http://www.leapsecond.com/pages/gpsdo-rise/ Some of these GPSDO have about a 1 V / 10 ns slew rate which means if you don't nail down your trigger level you're asking for very large shifts in 1PPS timing. The zero-crossing of a 10 MHz sinewave doesn't have the same ambiguity. /tvb

What is the difference between 1E-12, 10E-12, and 10^-12? Ed, K1GGI 2 parts in 10E-12

Hi Alexei, On 10 Nov 2008, at 12:26, Alexei Kuznetsov wrote: > Hi Ruud, > >>> I mean, the application uses 10% of cpu without any media active. >>> Also, pjsua without any params uses less than 1% cpu after start-up, >>> but 10% after the first call. Is it something you could improve in >>> the >>> future?

. > > Thank you, > Roberto EB4EQA > http://www.rbarrios.com > > > -----Mensaje original----- From: Tom Van Baak > Sent: Thursday, February 02, 2012 10:34 AM > To: Discussion of precise time and frequency measurement > Subject: Re: [time-nuts] ANFSCD - Synchronizing time in home video recorders > >> I think I've seen comments about making 32 KHz from 10 MHz in

This is for driving a 16 MHz microcontroller from a 10 MHz Rb/Cs/GPSDO. 10 MHz input is likely sine; 16 MHz output is 3v3 or 5v CMOS. > > Thanks, > /tvb > > > _______________________________________________ > time-nuts mailing list -- time-nuts@lists.febo.com > To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com > and follow

WHITE-WINGED SCOTER – present through the week with a high count of 40 on 10 Dec. BLACK SCOTER – 10 on 6 Dec off Gull Is. was the only report. HOODED MERGANSER – 2 on 6 Dec was the only report. PIED-BILLED GREBE – one was still in the marsh off the Ontario St. Boat Launch on 4 Dec.

I mean, is there actually gunk that gets past a 10-micron primary and clogs a 2-micron secondary between service intervals?

• Sunday 7/10, 11:15am-12:15pm, Spring Valley YMCA, Indoor Lap Pool (lanes 3-6): Uncoached group swim workout Have a great week! 🐊