There can be some different shapes and height/voltage, but most of the time it’s the frequency that is the key.
The KEYSTEP supports 5 different Analog clock rates:
- 1 STEP GATE
- 1 STEP CLOCK
- 1 PULSE (KORG)
- 24 PPQ (Pulses per quarter note)
- 48 PPQ
Korg *tribe/Volcas/SQ/*logue series need 1 pulse per two steps, and this (messed up) “standard” was chosen for Pocket Operators.
Check this discussion for more insight.