other guys have the same problem, i think you can find your solution in this topic
edit : but i think 6 go to center pin,
“normal signal” with no octave down in pin 1 (GND)
1 oct down = pin 2 (1V)
2 octave down = pin 3 (2V)
3 octave down = pin 4 (3V)
4 octave down = pin 5 (4V ref)