Tapio Sokura wrote:
> I'd say it would be better for timekeeping to use remote NTP servers
instead of a USB reference clock anyway, if Internet access is
available. The jitter from a non-PPS GPS serial port or USB is usually
quite bad, certainly worse than what can be achieved with a
non-saturated ADSL link.
Indeed I've seen USB GPS described as 'useless' in many places.
I wouldn't expect even the LVC to be as accurate as the $1000 atomic
clocks you can get.. but then as another poster wrote - how much
accuracy do you *need* - the LVC is accurate to 1us, which is far lower
than what an for example adsl line will introduce (2ms apparently).
Tony
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