Yamaha O2R Owner's Manual page 228

If the connected device does not have a dedicated SMPTE output
connector, record the timecode onto a spare track (in the case of a
multitrack recorder) or a special track (in the case of a video recorder or
film post-production recorder) and connect the output from that track to
the timecode input connector on the 02R.
Using MIDI Timecode (MTC)
MTC is a MIDI System message that indicates absolute time in
hours:minutes:seconds:frames, in the same fashion as SMPTE. MTC is an
alternate method of transferring the timecode data from one device to
another.
Use MTC when you want to synchronize the 02R automation system with
MIDI sequencers or a multitrack recorder that has MTC output jacks. Use
a MIDI cable to plug the MTC output connector of the controlling device
into the TIME CODE INPUT - MTC connector on the back of the 02R.
Note: When transmitting MTC to the 02R, you should use a dedicated output
on the connected device. Otherwise the 02R has to discard MlDI playback data and
other extraneous information, decreasing the accuracy of the timecode data.
Automation 127
Digital Recording Console 02R User's Guide