We have tested the RUT955 NTP Server time sync compared to other device that support both PTP master and NTP Server.
The other device (PICO3 which have also GNSS receiver) NTP server had show steady (no drift) sync to GNSS UTC time with delta of ~0.7 ms vs PTP synced clock.
The RUT955 was configured to sync to GNSS UTC every 5 Min (minimal setup time).
Does there is API that allow to trigger NTP server time sync to GNSS UTC ?
The testing was done for 6000 seconds, results in the image below.
There was quite steady drift of NTP clock vs UTC from GNSS of ~0.002 sec for 50sec = 0.012msec/5min = ~3.4 sec/day
We saw that the sync to GNSS UTC isn't reset correctly the NTP server time to UTC time (as can be seen in the few jumps in the middle of the image)
Are you aware of this issue with the NTP Server sync to GNSS UTC time ?