On Fri, 12 Aug 2016 13:56:40 +0200
Paul Boven wrote:
> 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
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 a
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
Hi
It might be easier to get into this if we put numbers on some of this. Are
we after a 16X increase from 10 ps (10 ps -> 0.6 fs) or from 10 ns (10 ns ->
600 ps).
There’s a lot of range there :)
Testing things like temperature dependance and noise / spurs can be challenging
in
some of these
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
Hoi Bert,
On Wed, 10 Aug 2016 09:33:30 -0400
Bert Kehren via time-nuts wrote:
> I get repeated requests for info on Shera mainly for Rb applications. Shera
> has a successful history controlling Rb's. Two things are a problem. The
> AD 1861 is not only unavailable but also never intended fo
There are also some nice cypresses semiconductor parts that are similar and
have a really nice dev environment.
Basically a core surrounded by programmable logic. Code in C ore close to it.
> On Aug 11, 2016, at 07:06, Bob Camp wrote:
>
> Hi
>
> To your earlier point, there are a number o
On 8/10/16 8:18 PM, Chris Albertson wrote:
Thanks for pointing out the Zynq. Wow you get a dual core ARM and an
FPGA all in one package. It seems overkill for a GPSDO but not the
type you are making as you can transferring the time out of the GPSDO
using PTP.
The Zyng looks to the the perfect
Hi
To your earlier point, there are a number of fairly low cost boards with Zynq’s
on them.
They aren’t into the $5 range, but they are not that much more than one of the
Beagle
boards.
Bob
> On Aug 10, 2016, at 11:18 PM, Chris Albertson
> wrote:
>
> Thanks for pointing out the Zynq. W
You are so right, Chris.
The Zynq is absolutely an overkill for an ordinary GPSDO.
What I think is attractive with the Zynq are the possibilities to
experiment with different implementations of counters and gates without
soldering and that you can get pretty fast counters well integrated with
t
The Red Pitaya uses a Zynq, and there's an (unofficial) SDR application
available to experiment with.
Cheers
Michael
On Thursday, 11 August 2016, Chris Albertson
wrote:
> Thanks for pointing out the Zynq. Wow you get a dual core ARM and an
> FPGA all in one package. It seems overkill for a GP
Thanks for pointing out the Zynq. Wow you get a dual core ARM and an
FPGA all in one package. It seems overkill for a GPSDO but not the
type you are making as you can transferring the time out of the GPSDO
using PTP.
The Zyng looks to the the perfect platform for low-cost SDR.
On Wed, Aug 10,
Dear time-nuts,
My name is Joakim Langlet (SM0OET) and I just recently joined this list.
As Brooks Shera was mentioned, I remembered that I was referenced in the
footnotes of the original article in the QST - July 1998. It feels
almost historical now. Brooks bought a few OCXOs from me.
I am
On Wed, Aug 10, 2016 at 6:33 AM, Bert Kehren via time-nuts
wrote:
..The LTC 1655 makes a perfect replacement ,16 bits is more than
> enough and covers range and resolution. What is needed is someone proficient
> with PIC assembly programming.
Even if you solve this problem today, you will h
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