On Friday, August 12, 2016 12:21:55 PM David wrote: > On Fri, 12 Aug 2016 13:56:40 +0200, you wrote: > >Hi everyone, > > > >On 2016-08-11 21:06:12, Attila Kinali wrote: > >> Hoi Bert, > >> > >> I'm asking, because if you go the way of using a CPLD anyways, you could > >> throw in another $2 for an opamp to build a time-to-amplitude converter > >> (à la PICTIC II) and boost the resolutiong from 40ns to <100ps. > >> As you would be measuring the PPS relative to the local clock, you > >> would need only one "leg" of the PICTIC II (ie just one TAC plus a single > >> ADC).> > >I'd want to use the programmable logic to build a (mostly) digital > >interpolation, either something along the lines of the 5370, or digital > >interpolation of the clock using DCM's like I did on a Spartan-3 years > >ago. On that device, I could achieve a 16-fold resolution increase by > >use of the clock management devices. > > > >I'm currently trying to replicate my old digital clock interpolation > >setup on the Xilinx/Digilent Arty board, with the aim of locking a Rb to > >GPS. > >Another goal is to get a DDMTD going on the Arty board for clock > >comparisons. > > > >Regards, Paul Boven. > > The HP5370 design seems awfully complicated unless it is significantly > faster than a time to amplitude interpolator. Integrating time > stretching interpolators which were contemporary to the HP5370 were > only 20 times slower and a time to amplitude interpolator is much > faster. > > Are there any modern implementations of the interpolator used in the > HP5370? > _______________________________________________ > 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. Not that I've seen. However there are multichannel damped sine TDCs with 5ps resolution from Keysight.
Bruce _______________________________________________ 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.
