Sometimes, your receiving slave unit may go out of range of its master. In this situation, the unit recognises that it is no longer receiving timecode from the master and so begins using its own internal clock instead. This is called 'free running'. As all of our units contain highly accurate timecode generators, we would expect to see less than 0.2 frames of drift over 24 hours with no communication with a master unit. When the unit comes back in to range of its master, it will automatically reconnect and 'soft lock' back in with the timecode being transmitted - meaning any drift will be corrected gradually over several frames, and you won't see any jump in the timecode.