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 -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.