NTP treshold "synchronisation lost"

does anyone know how to change the treshold of 128ms in NTP.

in order to ignore these alarms:

Oct 27 14:44:15 rt1 ntpd[19830]: synchronisation lost
Oct 27 15:08:25 rt1 ntpd[19830]: time reset 0.688591 s
Oct 27 15:08:25 rt1 ntpd[19830]: synchronisation lost
Oct 27 15:28:45 rt1 ntpd[19830]: time reset 0.462257 s