Hello Richard,
thanks for your reply.
I’ve already read the post you suggested. As far as I understand, when the time reference is given by GPS (and the unit is not connected to any NTP server) the timing accuracy is still 10ms, as you posted here [RS4D time synchronization - #8 by ivor].
This is due to the fact that the MCU clock of each unit has its very own drift. Is this correct?
Kind regards
Diego