Arturia KeyStep 37 MIDI Keyboard Controller and Sequencer - Manual (Page 68)

6.2.2. Clock connectors
There are several types of connectors that have been used for musical synchronization
purposes over the years. Here's a chart that indicates the best kinds to use when connecting
older devices to KeyStep 37:
Connector type Signal(s) sent
1/8'' mono (TS) Clock pulse only
1/8'' stereo (TRS) Clock pulse and start/stop
1/8'' stereo (TRS) plus DIN sync adapter (not included) Clock pulse and start/stop
You can use optional DIN sync adapters to connect to devices which utilize DIN sync
messages. Check the owner's manual for your device if you are not sure which sort of sync
capabilities it has.
63 Arturia - User Manual KeyStep 37 - Synchronization