[ntp:questions] How bad is USB?

Uwe Klein uwe_klein_habertwedt at t-online.de
Sun May 10 10:02:16 UTC 2009

David J Taylor wrote:
> Richard B. Gilbert wrote:
> []
>> You can try it and see what happens!  The results may be sufficiently
>> good for your purposes.  You will almost certainly not get microsecond
>> accuracy.  If you are willing to settle for +/- 10 milliseconds you
>> can almost certainly get that.
> Richard,
> My first tests show within a millisecond or so:
>  http://www.satsignal.eu/ntp/NTP-on-Windows-serial-port.html#usb

Do I see a (sawtoth) beat signal between "true" time and the nominally 1ms
polling interval from the usb bus?


More information about the questions mailing list