The WR time is set in GM mode as follow :
1/ At startup the NTP time is set using wr_date script
2/ PPSi calls the tool wr_date with parameters "set host". It will be
called every time it detects a PLL transition from UNLOCKED to LOCKED
state. Also PPSi provide a error counter 'gmUnlockErr' which gives the
number of time the PLL unlocked.
3/ Parameters "-v set host" in wr_date tool, set only the second part of
the WR time. The time is set in a middle of two WR seconds ticks.