Press the knob to change between Jog and Shuttle modes.

In Shuttle mode, the knob engages mechanical end stops at the maximum shuttle speed in both directions, and a centre détente when the shuttle speed is zero. The shuttle speed is continuously variable between 50 x Play Forward to 50 x Play Reverse.

In Jog mode, the knob is free to rotate in either direction without restriction, jogging 25 frames per rotation.