We sourced a grandmaster clock board from a vendor that advertised GPS integration. We are using an ICD-GPS-153 compliant receiver, and I had to rewicker ts2phc to interact with it. Most of my changes were built off of ts2phc_nmea_master.c . We were reconciling our times with external clocks. Our external clocks were behind what we were getting out of ts2phc by 40+ seconds. I looked through the code and saw that it was calling lstab_utc2tai() . I pulled the thread on that, and saw that a good chunk of our delta is due to adding back leap seconds. My systems engineer thinks we should just straight convert the UTC time tag to PTP time. Can you shed some light on the decision to add the leap seconds in when using a GPS upstream master?
Thanks! -- David
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