[ntp:questions] GPS clock for Linux
hal-usenet at ip-64-139-1-69.sjc.megapath.net
Sat Sep 13 09:02:08 UTC 2008
>> I assume it's a software bug/feature. The problem is drift/wander
>> in the offset. The offset changes too slowly for normal
>> jitter filters to work on it.
>connected via serial/nmea or pps?
I have another one (using the SiRF chips) that is serial
via a serial-USB adapter. Same thing.
>that looks like some beat frequency effect.
>But it is much too slow/time too big
> to be sender and/or receiver uart clocking.
Yes. But I don't think it's a USB problem. I get much better
results with a Garmin GPS 18 USB. (Of course, what I don't know
about USB could fill ...)
These are my opinions, not necessarily my employer's. I hate spam.
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