I am investigating the possibility to use the EM7455 GPS as a reference clock for a NTP server. This post let me know that it is possible for the gpsd daemon to extract the GPS data. This is a good start, because ntpd can read gpsd and thus it is possible to use as a reference clock. However I am wondering how good the GPS is and if it can perform a more accurate time than a NTP setup with regular NTP servers.
What I understand from this is that it boils down to if the GPS has Pulse Per Second (PPS) support or not. Does the EM7455 have it? I found no mentioning in the documentation that I have read, but I might have missed something. I am asking here because I would like to be 100% sure before abandoning the idea.