3080 VCO v1.2 – User Guide
This is the setup and user guide. The unit is designed for a monophonic Analog synthesizer.
The module is designed and sized for Eurorack systems. You will need a 16 pin Eurorack power
ribbon connector with –12/0/+12 which is connected to a synth power supply. You will also need a
trimmer adjustment tool, a digital volt meter, a frequency counter and, if possible, an oscilloscope.
Calibrating the 3080-VCO
If you bought PCBs or a kit, you should only need to calibrate the unit once. If you bought a pre-built
and tested unit, you can skip this section. Power up the device and allow it to warm up for 15 minutes.
1. Set R30 HF Trim to 0. This is done by turning the screw counter clockwise until it hits the end
stop. A quiet click can be heard.
2. Disconnect all CV sources from the inputs.
3. Set the coarse and fine tuning controls to their center position.
4. Put a frequency counter on the SIN output.
5. Offset adjustment: Adjust R1 Offset until the frequency is 16.35Hz.
6. Connect a CV source such (as a keyboard controller CV) into the 1V/octave jack.
To Next Page
Need help?
General