Sradio, Not knowing the automation package you are using, I can only suggest to look up the setup pages..make sure it is running in continuous sync mode. Some TC readers acquire lock, then switch to freewheel. Also it may sound obvious, your source code shouldn't run over the 23:59:59:00 address. Are there TC output options in the sync I/O ? You should check that also. I'd call Neve support with this one. good luck,