[time-nuts] Re: TimeStick

[Azelio Boriani]

...and the ASIX website disappeared on Wednesday at 9 (CEST)...

On Fri, Oct 11, 2024 at 7:23 AM Ed Marciniak via time-nuts <
time-nuts at lists.febo.com> wrote:

> It seems to me that the raspberry pi compute module 4 uses an Ethernet
> chip that supports PTP and that the carrier board broke out one pin and you
> could choose input or output.
>
> If this module doesn’t support an input pin for PTP, there are other
> options.
> ________________________________
> From: Steven Sommars via time-nuts <time-nuts at lists.febo.com>
> Sent: Thursday, October 10, 2024 8:47:33 PM
> To: Discussion of precise time and frequency measurement <
> time-nuts at lists.febo.com>
> Cc: Steven Sommars <stevesommarsntp at gmail.com>
> Subject: [time-nuts] Re: TimeStick
>
> Won't the USB between the host and the Ethernet side of the TimeStick limit
> accuracy to a few microseconds at best?
>
> If the goal is to distribute accurate PPS won't boundary clocks be needed?
>
> The TimeStick will be great for experimenters, though.
>
>
>
> On Thu, Oct 10, 2024 at 7:26 PM Jim Lux via time-nuts <
> time-nuts at lists.febo.com> wrote:
>
> >
> >
> >
> >
> >
> > It's unclear if this is a time source (i.e. you've got a grandmaster or
> > such running PTP and sending time, and this widget receives it and puts
> out
> > 1pps.  Or can it be a sender - I cobble up a bunch of stuff from my
> > collection of masers and fountain clocks in my underground lair, and I
> can
> > send that highly accurate tick to the rest of the (connected by cabled
> > ethernet) world?
> >
> > beaks out 1pps is ambiguous
> >
> >
> > On Wed, 9 Oct 2024 05:05:12 +0200, Magnus Danielson via time-nuts <
> > time-nuts at lists.febo.com> wrote:
> >
> > Hi Paul,
> >
> > Yes. I think the presentation on the web leaves a little more to desire,
> > so I will ask Ahmed to improve that, as I think it should not be too
> > difficult to achieve.
> >
> > While many do not have PTP timing in their labs, it is becoming more and
> > more ubiquious so it is interesing when the entry level is so low. With
> > this little device you can do your normal TI-counter measurement even
> > for a PTP source. Exactly how much it filters, add noise and add time
> > bias, I do not know, yet.
> >
> > I find it interesting that the PPS is such a common reference
> > measurement point, it keep showing up in packet timing solutions as a
> > reference point, including the ITU-T standards.
> >
> > Cheers,
> > Magnus
> >
> > On 2024-10-08 14:57, paul swed wrote:
> > > Magnus that is amazing and it seems to be $29. That is hard to believe.
> > > Appreciate you sharing.
> > > Paul
> > > WB8TSL
> > >
> > > On Tue, Oct 8, 2024 at 1:24 AM Magnus Danielson via time-nuts
> > >  wrote:
> > >
> > > Fellow time-nuts,
> > >
> > > As my travels brings me to ISPCS conference and plugfest in Tokyo,
> > > they
> > > hand out these nifty little devices called the TimeStick.
> > >
> > >
> https://urldefense.proofpoint.com/v2/url?u=https-3A__www.time-2Dstick.com_about-2D2&d=DwIGaQ&c=euGZstcaTDllvimEN8b7jXrwqOf-v5A_CdpgnVfiiMM&r=JsDsKeR7cZC8wbZhIlxxBQ&m=MGoKVEoKMI-KU9FLZdk71mlWndKDNvYEN3asqXn8L3I240Y7lTAtNTmOvT3zDHna&s=99K2hSXfLSCZ1ys5l5cgYsOpr4LZVrQgHKgMLYWwWI8&e=
> > >
> > > Really cool little device!
> > >
> > > I thought you guys would enjoy learning about it.
> > >
> > > Best Regards,
> > > Magnus
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> >
> >
> >
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