CV scale/wrong tunning

Hermod+
1

Hi,

  • When I send a midi note A3 A4 A5 to a disting EX (digital VCO) I have a sharp A3 A4 A5.
  • When I send a CV note A3 A4 A5 to a disting EX I have a sharp a nearly F4# F5# F6# and ALSO a non regular interval (higher = more and more far from F).

I calibrated my Hermod+ with a multimeter.

What is the probleme?

Thanks