I cant' remember the parameter name, but one is for the actual time the re sync takes place like IDWT suggests (JRT=midnight), but there is also the time in duration the system is given to accomplish the resync (like 30 seconds etc). I think I set mind at 45 seconds.
You can "force" a resync too while you've got control of the unit to see how it takes place, but these acronyms/commands escape me at the moment (FJR?...ForceJackResync?)