I recommend that before doing that calibration, you play the oscillator in Eurorack into Rack, and using NYSTHI:Hot Tuna you tune the oscillator to C4. Then you do the calibration. If the calibration has gone well the oscillator should be on pitch, which you can verify by playing it into Rack and measuring with Hot Tuna. The Voice Controller module itself will not show pitch, that’s not its job.