[time-nuts] Re: What everyday uses are there for accurate clocks?

[Peter O'Reilly]

Hello,

Sync-Ethernet and PTP is used in 5G and other networks, such as stock exchanges (High frequency trading, where computers automatically make decisions regarding trades). G.8275.1 seems to be choice now. 
I hope no one minds but the book is very good and covers these topics very well..

https://www.ciscopress.com/store/synchronizing-5g-mobile-networks-9780136836254

regards,

Peter


On 29/11/2022, 15:28, "Eric Scace via time-nuts" <time-nuts at lists.febo.com> wrote:

    PTP is used in digital radio and TV studios and in the distribution of studio programming to transmitter sites. 

    Sent from my iPhone

    > On Nov 29, 2022, at 06:04, Clint Jay via time-nuts <time-nuts at lists.febo.com> wrote:
    > 
    > I believe radio and television broadcasting makes use of accurate time in
    > studio and the wider transmission network.
    > 
    > I've worked in quite a few data centres where there's been a local NTP
    > server that was synced to GPS or, prior to the availability of GPS, the
    > "local" broadcast time signal.
    > 
    >> On Tue, 29 Nov 2022, 09:29 Dr. David Kirkby via time-nuts, <
    >> time-nuts at lists.febo.com> wrote:
    >> 
    >> I mentioned to someone the other day that I owned an HP GPS time and
    >> frequency standard. He asked me a simple question, but one I didn’t know
    >> the answer to.
    >> 
    >> 
    >> Apart from GPS, what in the daily lives of the general public need the sort
    >> of accuracy one can get from time-nut grade clocks? I believe some
    >> financial transactions is one application, and the cellular phone system
    >> another. Are there others?
    >> 
    >> I found a few links
    >> 
    >> “The importance of time measurement”
    >> 
    >> 
    >> https://www.nsai.ie/national-metrology/calibration-services/time-and-frequency-calibration/the-importance-of-time-measurement/
    >> 
    >> 
    >> “The importance of measuring time”
    >> 
    >> 
    >> https://www.cranfield.ac.uk/alumni/communications/alumni-news/2021/0108-the-importance-of-measuring-time
    >> 
    >> but have not seen any reference to anything much on the topic.
    >> --
    >> Dr. David Kirkby,
    >> Kirkby Microwave Ltd,
    >> drkirkby at kirkbymicrowave.co.uk
    >> https://www.kirkbymicrowave.co.uk/
    >> Telephone 01621-680100./ +44 1621 680100
    >> 
    >> Registered in England & Wales, company number 08914892.
    >> Registered office:
    >> Stokes Hall Lodge, Burnham Rd, Althorne, Chelmsford, Essex, CM3 6DT, United
    >> Kingdom
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