Hi, I received a few modules this week including the METER. It is really great for all the functions it includes, I recommend it for anyone interested! I just cannot find how to use the oscillator calibration mode. I believe you need to use the MIDI OUT, as mention in the product page, but I have no idea how?
MIDI out from meter to MIDI in on master module, bus CV (which comes from the master module) to the oscillator being calibrated, then one of the waveforms out from the oscillator back to some input on the METER module.
That way the meter could send out a MIDI note and "hear" which frequency was generated, and suggest corrective measures if needed.