This warning indicates that Smode is resynchronizing to the incoming Timecode (TC).
If it occurs only once at the TC startup, it simply indicates that Smode is correctly synchronizing to the TC, and there is no issue.
If it occurs in the middle of playback, it is a bit more concerning. The main risk is experiencing graphic jumps, which are linked to the time resynchronization.
Try to increase the signal level to avoid these kinds of problems.
