Build Guide - Calibration

Set [-5V +5V] to its mid-position
Apply 5VDC to [VC]
Feed a 440Hz 10VACp-p signal into the [CLOCK+] input
Monitor the [PULSE] output
Adjust P302 and P303 fully counter-clockwise
With [1-60] set to ‘1’, adjust P302 until the signal equals 440Hz
With [1-60] set to ‘60’, adjust P303 until you get the lowest frequency possible.
If the output stops then back up until you get a signal again.
Repeat steps (5) to (7)