Cv1 and cv2 both output a voltage according to the 1V per octave standard:
MIDI note
CV1/2 Voltage output
Default Firmware
CV1/2 Voltage output
Alternate firmware with
-2V offset
C9
10V
8V
C8
9V
7V
C7
8V
6V
C6
7V
5V
C5
6V
4V
C4
5V
3V
C3
4V
2V
C2
3V
1V
C1
2V
0V
C0
1V
0V
C-1
0V
0V