Mike you may have missed it in the thread. I made a mistake its not the cme8000 chip. Thats a classic am decoder. *You want the ES100*. Thats a true wwvb bpsk decoder. Contact La Crosse and ask if they have a model. Regards Paul WB8TSL
On Fri, Apr 7, 2017 at 1:18 PM, Mike Seguin <n1...@burlingtontelecom.net> wrote: > Does anyone know of a clock with digital readout that uses the CME-8000? > > Tnx, > Mike > > > On 2017-04-07 13:03, Tom Van Baak wrote: > >> Very good catch it is *not* the cme8000 chip. Thats a classic am receiver. >>> It is the everset chip. Sorry for mis-leading. >>> >> >> Hi Paul, >> >> I can confirm (from talking with the guys backing it) that, yes, it's >> the EverSet ES100, in die form (CoB). I believe you and I have both >> used the early Xtendwave dev kits with the ES100 as SMT part. It's >> nice to see the chip still lives and finally made it to a product! >> >> >> I uploaded more ultrAtomic info and tear-down photos: >> >> http://leapsecond.com/pages/ultratomic/ >> >> I encourage those of you who just bought these clocks to do some >> experiments. The obvious ones are: >> >> 1) See how long it takes to acquire the correct time, at all sorts of >> different and difficult environments, compared to the traditional WWVB >> clocks. Check for off-by-one second, or minute, or hour errors. >> >> 2) See how accurate they really are. For clocks like this I use a >> variety of piezo sensors (feel the tick), acoustic sensors (hear the >> tick), optical sensors (see the tick), and mostly electrical sensors. >> Some of these are passive (non-destructive) timings and good enough. >> Others require some level of disassembly but are more precise. For a >> stepper motor clock it's easy to tap onto the coil connections and get >> a sharp pulse every second or two. Then use a time interval counter, >> or picPET, or TICC, or PC-based PPS-capture to collect readings. Note >> the signal level is usually low power and below typical TTL levels, >> and they do NOT drive 50R! >> >> >> If all goes well, we can soon talk about a time-nuts special where we >> get someone to make a timing board or disciplined timing board based >> on the ES100 chip. The bad news is that at the same price it would be >> like a million times worse than GPS. The good news is that lots of >> applications need only ms level timing; there are places where WWVB is >> receivable and GNSS is not; and then there's the redundancy and >> low-power factor. >> >> /tvb >> >> ----- Original Message ----- >> From: "paul swed" <paulsw...@gmail.com> >> To: "Discussion of precise time and frequency measurement" < >> time-nuts@febo.com> >> Sent: Friday, April 07, 2017 5:08 AM >> Subject: Re: [time-nuts] The ultraAtomic clock for home >> >> >> Tom >> Very good catch it is *not* the cme8000 chip. Thats a classic am receiver. >> It is the everset chip. Sorry for mis-leading. >> Regards >> Paul >> WB8TSL >> >> >> _______________________________________________ >> time-nuts mailing list -- time-nuts@febo.com >> To unsubscribe, go to https://www.febo.com/cgi-bin/m >> ailman/listinfo/time-nuts >> and follow the instructions there. >> > --- > 73, > Mike, N1JEZ > "A closed mouth gathers no feet" > > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/m > ailman/listinfo/time-nuts > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.