[time-nuts] GPS USB dongle for time server

[Randy Scott]

> I would think that USB is not inherently worse than a
> hardware RS232. Both have some interrupt latency, but it's
> small in both cases.  USB has to handle audio reliably
> at no worse than 8kHz sampling rate.

Using isochronous USB enpoints, yes.  USB-to-serial converters and probably whatever they put into USB GPS receivers no doubt use bulk endpoints with slightly more non-deterministic buffering on both ends of the wire.

Randy.