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With  SYNC:  OFF  you  can  adjust  the 
internal  oscillator  frequency.  Rotate 
the  FX  potentiometer  to  set  the 
frequency from 0.13Hz to 4000Hz.

Let’s  start  with  the 

INTERNAL 

MODULATION OSCILLATOR (OSC)

First,  you  have  selection  of  the 
waveforms  (WAVE).  Rotate  the  right 
encoder  to  browse  the  waveforms. 
Available  waveforms  are:  Sine, 
Triangle,  Ramp,  Sawtooth,  Square, 

Sample&Hold.  Note  that  not  all  modulation  waveforms  will  give  nice 
resulting sound. We recommend to begin experiments with the sinewave. 
Once you have selected the waveform push the right encoder to configure 
synchronization of the modulation oscillator. Rotate the right encoder to 
select synchronization ON or OFF, meaning, if the internal oscillator runs 
independently or its’ frequency is synchronized to the frequency of the 
main oscillator.

With  SYNC:  ON  you  can  select 
synchronization  ratio.  Rotate  the  FX 
potentiometer  to  desired  sync  ratio 
(the module provides both multiplied 
and  divided  frequencies).  Note  that 
module  will  play  back  the  resulting 
wave  in  real  time  and  you  can  hear 

modulation sweetspots. 

IF  THE  EXTERNAL  MODULATOR 

IS  SELECTED  (IN)

,  you  can  apply 

the  modulation  CV  (LFO,  envelope 
generator  or  any  other  modulation 
source)  to  the  FX  CV  input,  and 
adjust  its  amplitude  with  the  FX  CV 
potentiometer.

The small “oscilloscope” will show you the waveform of the incoming CV. 
Push the right encoder to access oscilloscope settings:
SCALE  adjusts  the  timing  to  fit  the  incoming  modulation  wave  in  the 
oscilloscope horizontally; 
GAIN – sets the gain of the FX CV input;
BIAS – offsets the incoming CV on the FX CV input.

PHASE  DISTORTION

  has  similar 

controls,  and  the  setting  POT  turns 
FX  potentiometer  in  manual  phase 
distortion control.

For  some  effects  (specifically,  phase 
distortion,  wavefold,  wave  wrap, 
bitcrush) 

MANUAL CONTROL (POT)

 

over the effect gives nice results. Just 
use the FX potentiometer to alter the 
waveshape.

RINGMODULATOR

  works  similar 

to  the  FM.  The  principal  oscillator 
is  considered  a    main  signal,  but 
Modulation oscillator or signal applied 
to the FX CV – a carrier.
Modulation  controls  are  basically 
identical.

Summary of Contents for GraphicVco

Page 1: ...USER MANUAL...

Page 2: ...Panel width 16HP Module depth 30mm Power consumption 152mA 12V 20mA 12V The Graphic VCO allows you to draw your own waveforms arrange them in wavetables and wavetable banks morph between two selected...

Page 3: ...V to 8V for 8 octave tuning THIS IS FX AMOUNT CV INPUT It s unipolar and accepts 0 10V CVs THIS IS FX PARAMETER CV INPUT It s bipolar and accepts 10V 10V CVs In the Wavetable Matrix mode this CV input...

Page 4: ...right encoders to navigate thru the list of A and B wavetables correspondingly and click to confirm selection then repeat the same to chose the waves form the list within the wavetable Once waveforms...

Page 5: ...ncoder to split the marker and define width of the selection Now you have two options 1 Rotate the left encoder to move selection right or left 2 Click the right encoder and rotate it CW to draw the p...

Page 6: ...he wave NAME menu will appear In the NAME menu you can name your waveform and save in user generated wavetables Follow the pop up screens to allocate the wave in a desired wavetable You can change the...

Page 7: ...an alter the size of the matrix by clicking the left encoder At the first click the bold dot in the top left corner will appear and you can adjust the size of the matrix by rotating left and right enc...

Page 8: ...ected effect appears in the top left corner of the screen Available effects in order of appearance are Frequency Modulation Ringmodulator Phase Distortion Wavefolder Wavewrapper Bitchrush Sample rate...

Page 9: ...d divided frequencies Note that module will play back the resulting wave in real time and you can hear modulation sweetspots IF THE EXTERNAL MODULATOR IS SELECTED IN you can apply the modulation CV LF...

Page 10: ...or settings The suboscillator is assigned to the OUT2 No FX except frequency modulation is applied on the suboscillator Rotate the left encoder to select settings you wish to alter and rotate the righ...

Page 11: ...elete rename screen will appear Once you are happy how your designed waves or wavetables with suboscillator configuration and FXes applied sound you can save a SNAPSHOT a combination of all your setti...

Page 12: ...m and hardware settings Rotate the left encoder to access various configuration settings Info menu contains information on firmware version and memory usage In the display configuration menu you can a...

Page 13: ...TION MENU you can configure CV inputs by adjusting their gain and bias Use the left encoder to select the input or setting and right one to adjust the amount of the setting In the CALIBRATION MENU you...

Page 14: ...ONS Please follow the instructions for use of the Erica Synths Graphic VCO below cause only this will guarantee proper operation of the module and ensure warranty from Erica Synths Water is lethal for...

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