William Unruh <un...@invalid.ca> wrote: > On 2021-06-23, Jim Pennino <j...@gonzo.specsol.net> wrote: > ... >> >> As for the USB GPS I was testing, it is called a VK-162 G-Mouse >> available from Amazon for $14, uses the Windows 10 native driver so it >> works with Meinberg ntp, and keeps the time within single digit >> milliseconds without any other servers. > > Looks like a nice cheap receiver-- no PPS I assume so that accuracy, > after correction for the NMEA delay is probably in the 10s of ms, not > their claimed microsecond. But certainly for most people ms is more than > enough accuracy. >
Correct, no PPS. >From short term (day or so) testing looking at peerstats data: Samples: 3914 Avg offset: -0.00190137 Std dev: 0.00921412 ntpq typically shows offset and jitter at about 1 and the satellites in view are usually 14 or more with the puck in a window sill. That is from a linux PC where there are more tools for testing things. The reason I bought it is that it is advertised to work with the Windows native USB driver, which produces a virtual com port, which makes it usable with Meinberg ntp without any other drivers or software. I have yet to do any Windows testing other than to verify it does work, but I see no reason why Windows would be much different. _______________________________________________ questions mailing list questions@lists.ntp.org http://lists.ntp.org/listinfo/questions
