Arturia KeyStep 37 MIDI Keyboard Controller and Sequencer - Manual (Page 26)

2.2.4. Rate knob (set tempo)
Use the Rate knob or the Tap button to adjust the playback tempo. You can also set the
exact tempo of the sequence before starting the sequencer by pressing the Tap button a few
times.
With the MIDI Control Center you can specify how many taps of the Tap button it takes to
adjust the tempo, and also how the Rate knob will respond when it is turned. See Chapter 9
[p.74] for more information.

♪ : You can make fine adjustments to tempo in decimal increments by holding the Shift button while
turning the Rate knob.
2.2.5. Time Division encoder
The Time Division encoder allows you to change the rhythmic relationship of the sequence
relative to the tempo: quarter notes (one step per beat), eighth notes (two steps per beat),
and so on. Triplet values are offered as well (1/4T, 1/8T, etc.).

♪ : If you hold Shift then turn the Div knob, the time division does not change immediately, but only
after you release the Shift button. This allows smooth transitions between different time divisions.
21 Arturia - User Manual KeyStep 37 - Basic Operations