The GPS module has a better oscillator then the CPU, so maintaining the PPS output for a longer duration after GPS loss will result in a better holdover accuracy.
The GPS module settings need investigation and changes, currently PPS is only maintained for a minute or so after which the CPU's clock takes over.
The GPS module has a better oscillator then the CPU, so maintaining the PPS output for a longer duration after GPS loss will result in a better holdover accuracy.
The GPS module settings need investigation and changes, currently PPS is only maintained for a minute or so after which the CPU's clock takes over.