Close out sale!
We are closing out this older version of the 2131 VCO and offering this excellent VCO at a steep discount. Stock is limited and once they are gone they are gone for good.
The 2131 VCO is a 1V/Octave VCO based on the Sound Semiconductor SSI2131 chip. The module offers unparalleled temperature stability, exponentiality, waveform integrity over a 10 octave range.
Manual Controls
Coarse Tuning - Approximately 5 octave range
Fine Tuning - Approximately 1% frequency adjustment
PWM - Controls the pulse width or duty cycle of the pulse waveform output.
Hard/Soft Sync - Switch changes between hard and soft synchronization of the sync frequency input.
Inputs
2 - 1V/Octave inputs.
PWM CV - Externally controls the pulse width or duty cycle of the pulse waveform output. This input is summed with the manual PWM control.
Sync frequency input. Toggle switch switches between hard and soft synch operation.
Linear FM - A ground-referenced current input. Current into the LIN FREQ pin sets the linear scale of the exponential converter’s output. It can be used for linear FM applications.
Internal Adjustments
Bias - Provides a base output frequency. Normally adjusted to output a frequency of 27.5Hz
Scale - Exponetial scale tracking adjustment
High frequency - High frequency tracking adjustment
Every 2131 Oscillator comes pre-calibrated to track 1V/Octave. Re-calibrating the SSI2131 is relatively simple procedure.
We provide a web application to assist in calibration - SSI2131Tuner Follow the instructions on the page to calibrate your 2131 VCO
See the SSI2131 datasheet for more information about the SSI2131 VCO chip and its characteristics.
SSI2131 Datasheet.
