Is there any way to derive carrier phase from these chips? Or to get raw modulation data that might make it usable as the front end to one of PaulS's de-PSKers?
On Apr 7, 2017, 1:04 PM, at 1:04 PM, Tom Van Baak <t...@leapsecond.com> 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/mailman/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.
