XR22 VCO FT - VCO with amplitude modulation and FSK

VCO with Ring Modulation Input and FSK (Frequency Shift Keying)
The ring modulation VCO XR22 VCO FT with AM-input allows direct ring modulation of audio signals with the oscillator’s sine/triangle signal. Alternatively, the AM-input can be used to control the amplitude of the sine/triangle output (e.g. in combination with an envelope generator).
The FSK (frequency shift keying) option with its two switchable different oscillator frequencies – controllable by the two big-sized knobs (and their respective fine-tuning knobs and frequency-CV inputs) – allows advanced waveform generation. The oscillator’s squarewave output can be switched directly to the FSK input, resulting in separate controlling of the rising/falling edges of the sine/triangle signal and the duty-cycle of the square output (for generating ramp and pulse waveforms) by the tuning knobs and/or CV.
A switch allowes to enable Sync-Mode - for synced LFO applications and more.
For optical control, the XR22VCO FT has a full-color LED for AM visualization and a 2-color LED for FSK control.

• Amplitude modulation (AM) input
  - Ring modulation
  -  CV controllable volume of the sine/triangle output
  -  Advanced waveform shaping (via e.g. feedback)
• FSK (frequency shift keying)
  - Pulse and ramp waveforms generation
  - Switching between 2 different frequency CVs (with gate signal)
  - Advanced waveform generation
• Switchable Sync-Mode
  
• Full-Color LED for AM visualization