The microphone input can be used to jam-sync your TRACK E with timecode from any external timecode source via cable. Once your TRACK E is switched on, you can jam-sync it as long as there is no other action done (e.g. Wireless Sync via app or start a recording). The status LED will blink green for a bit, once it's jammed by the external timecode.
Here are the suitable adapter cables in our online store: