OP-1 is a class compliant, plug-and-play usb midi device and needs to be connected to a usb host for midi operations. OP-1 can either be free from sync, be the master unit, or be synced to external clock. follow the steps below to configure OP-1 for midi use:
- use the provided usb cable to connect to a computer, or usb host.
- for synchronization, press TEMPO and turn GREEN.
three modes are available:- free (midi is sent/received, clock ignored)
- beat match (midi is sent/received, internal clock, OP-1 is the master unit)
- sync (midi is sent/received, OP-1 is synced by external clock if detected)
- select the sync mode desired for OP-1.
- see the manual for your external devices on how to configure/connect these.
midi reference chart:
| midi information used | sent | received |
| note on / off | √ | √ |
| pitch bend | √ | √ |
| velocity | fixed at 127 | √ |
| cc #1–4 | – |
√ using the midi lfo |
| midi clock | √ | √ |
| song position pointer | √ | √ |
| midi transport | √ | √ |
note: for external cc control use the midi lfo. for more information see the user guide.
please see http://www.midi.org for more information on midi specifics.