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Modular XR22 VCO VCO with AM Input and FSK (Frequency Shift Keying) 1. Features – AM (Amplitude Modulation) Input • Ring modulation • CV controllable sine/triangle volume – Eurorack Module • Advanced waveform generation through feedback – Width: 12 HP –...
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VCO volume control with triangle signal (Feedback) external envelope generator 2.2 FSK (Frequency Shift Keying) The frequency of the XR22 VCO is controlled by F1/com Poti two independent frequency control sections F1 F1 Octave and F2 with independent manual frequency Switch controls and CV ins;...
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Modular 3. Functions XR22 VCO Introduction For better understanding it is recommended to read first about the control elements FSK mode switch (frequency shift keying) F1/com In upper position: Only F1 is active; LED= green In middle position: Only F2 is active, LED=...
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Sinewave output voltage: 3Vpp without AM; max. 6Vpp with AM. Trianglewave output voltage: 6Vpp without AM; max. 8Vpp with AM. In the banana version of the XR22 VCO the sockets signalize low impedance outputs. These outputs may be grounded or patched together! This may damage the module.
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⑰ Ground This socket only exists in the banana version of the XR22 VCO. The ground connection is required if the module is connected to external equipment, e.g. a mixer. Within the modular system the module is grounded through the power supply.
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Modular 4. Adjustment The VCO is already carefully adjusted to 1V/Oct. If you realize that the XR22 VCO isn't in tune with your other analog synthesizer equipment, it may be necessary to adjust it. Procedure (Suggestion) Switch on your equipment and the XR22 VCO and wait ½...
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Jumper "JP1" in "off" position (on PCB): The Bus CV is controlling the XR22 VCO's frequencies. is not connected. Note: In the older version of the XR22 VCO there is no Bus CV Jumper. The Bus CV is always connected to the VCO's frequency control.