This behavior is described in the document: u-blox 8/M8 Firmware v 3.01 for Standard Precision GNSS, Release Notes <https://www.u-blox.com/sites/default/files/GNSS-FW3.01_ReleaseNotes_%28UBX-16000319%29_Public.pdf>
This document says, among other things,: "New multi-GNSS messages use UTC as time reference. In some cases unknown parameters (leap seconds, interGNSS time offsets) may lead to a reduced accuracy of the output time. This inaccuracy can be as high as 20 s (unknown leap seconds), which overflows the accuracy fields of some messages, resulting in maximum accuracy figures (e.g., the UTC time accuracy in UBX-NAV-PVT is capped at 4294967295ns when deriving UTC from GPS time with unknown leap seconds)." Is this perhaps the reason this firmware is marked "Not for Timing Use"? The 2.01 Release at this location is similarly marked. Dave _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
