1. Select [AUDIO]
2. Set [FREQUENCY] to maximum
3. Set [RESONANCE] to '5'
4. Set [CV POLARITY] to '0'
5. Set [INPUT] to maximum
6. Patch a 12Hz 5VDC p-p square wave in to [INPUT]
7. Monitor the [BANDPASS] output
8. Increase [RESONANCE] until the filter starts to ring - approximately '9'
9. Adjust p101 for a frequency of 19kHz. You may need to slightly increase the [RESONANCE] to maximize the duration of the ringing waveform

Step 8 - CGS577 Ringing

Step 9 - Tuning to ~19kHz