When using the MTC-20 as the generated clock source for the MTC-10, 30DF and 30 FPS do not work correctly.
The MTC-20 is connected to the MTC-10 with an XLR cable, so MTC-20 is sending LTC and the MTC-10 is receiving LTC.
The connection works correctly at 24 & 25 FPS.
Both devices have the latest firmware installed.
The MTC-10 is connected to a computer which is monitoring the timecode via USB. The MTC-20 is not connected to a computer, being powered over USB as a standalone timecode generator.