I decided to do a quick test to see if RTCMv3 correction data changes the PPS output form the Z9P, and to my surprise I found that it does:
It shifts the PPS by about 20 nanoseconds. In the attached plot, correction data was on from 5k to 10k and from 35k onwards. There also seems to be a consistent x2-x3 improvement in Modified Allan Variance. -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 [email protected] | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence.
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