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Olivella Modular Signos, User Manual, Page: 3 / 19

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Installation 

Check that your Eurorack synthesizer is 

powered off

. 

Connect the 10 pin side of the power cable to the 2x5 pin power header on the back of 
the module, 

making sure that the red stripe on the cable is connected to -12V

 (as 

shown on the back of the module). 

Connect the 16 pin side of the power cable to a free 2x8 pin power header on your 
Eurorack power supply, again 

making sure that the red stripe on the cable is 

connected to -12V on your power supply

.  

Mount the module in your Eurorack case.  

Power it on! 

In the rare case that the power cable gets installed backwards (because you may be using a
different   power   cable   than   the   one   provided   with   SIGNOS   or   for   other   reasons)

the module will not get damaged

  because it features reverse polarity protection, but it

won’t work plugged the wrong way around. 

Details 

Fully DC-coupled 

All inputs allow DC to audio-rate signals 

Input impedance: 100 k  

Ω

Output impedance: 510   

Ω

Width: 8 HP 

Depth: 40 mm 

+12V: 110mA 

-12V: 110mA 

Reverse polarity protection 

SIGNOS

 - User Manual  |  Page 3

Summary of Contents for Signos

Page 1: ...User manual Dual signal transmutator SIGNOS...

Page 2: ...aveshaper with both and affecting different parts of this circuit and a SHIFT waveshaper that was originally designed to pitch shift sawtooth waves up an octave but that can also do interesting wave m...

Page 3: ...n the cable is connected to 12V on your power supply Mount the module in your Eurorack case Power it on In the rare case that the power cable gets installed backwards because you may be using a differ...

Page 4: ...X bipolar VCA out 7 X bipolar VCA LED indicator 8 Y modulation knob 9 Y modulation input 10 Y main input 11 Y offset knob 12 Y unipolar VCA out 13 Y inverted unipolar VCA out 14 Y bipolar VCA out 15...

Page 5: ...ts are unattenuated and go straight to their respective channel s unipolar and bipolar VCAs which are controlled by the modulation knobs and modulation inputs more on that later After this step they g...

Page 6: ...r VCAs are graphically represented with a light blue color the dots growing in size around the modulation knobs pinpoint their attenuation only side and the unipolar VCAs normal and inverted output s...

Page 7: ...be high only when both signals are high OR gate analog maximum boolean OR This circuit always outputs the greater value between and When using binary signals either high or low like gates or triggers...

Page 8: ...ly tracks the main signal changes Additionally the Modulo output polarity jumper on the back allows you to invert or not the MOD output signal The circuit s behavior is roughly pictured by the symbol...

Page 9: ...nd patch settings will drastically change the final result from voltage controlled waveshaping to bit reduction fuzz and distortion To be clear in this example the voltage threshold level and the step...

Page 10: ...ity jumper in the back of the module must be set to positive and the Modulo step size trimmer must be set at EXACTLY 1V as it comes when we calibrate each unit before shipping Modulo step size calibra...

Page 11: ...input of the circuit it s a 10Vpp sine wave If it exceeds 600mV the comparator s output will change and subtract 8V to the signal seen at the SHIFT output introducing a sharp discontinuity fold to th...

Page 12: ...effectively doubles up the frequency of the SHIFT output from 100Hz to 200Hz The SHIFT output waveform can be modulated by the channel s offset and inputs effectively mixing with the main input of SHI...

Page 13: ...V 5 V 0 V 5 V 5 V 0 V 800mV 3 V 0 V 800mV 3 V Input bipolar VCA CV attenuator X INPUTS decay envelope 9 Vpp sawtooth wave 10 Vpp 0 V 5 V 5 V Y INPUTS square wave 10 Vpp sine wave LFO 10 Vpp 0 V 5 V 5...

Page 14: ...Manual Page 14 Offset Threshold INPUT triangle wave 10 Vpp 0 V 5 V 5 V LOGIC OUTPUTS half wave rectified triangle 5 Vpp Amplitude 0 V 5 V 0 V 5 V INPUT triangle wave 100Hz 10 Vpp 0 V 5 V 5 V LOGIC OU...

Page 15: ...V X INPUTS modulator triangle wave 10 Vpp carrier sawtooth wave 10 Vpp 0 V 5 V 5 V 0 V 5 V 5 V Y INPUTS modulator sine wave 10 Vpp carrier square wave 10 Vpp 0 V 5 V 5 V 0 V 5 V 5 V 0 V 2 5 V 2 5 V IN...

Page 16: ...Vpp Offset LOGIC OUTPUTS logical mixing 10 Vpp Amplitude 0 V 5 V 5 V Offset Amplitude 0 V 5 V 5 V 0 V 5 V 5 V 0 V 5 V 5 V SIGNAL INPUTS triangle and square waves 10 Vpp LOGIC OUTPUTS logical crossfad...

Page 17: ...OUT triangle 10 Vpp 0 V 5 V 5 V Y INV VCA OUT inverted triangle 10 Vpp 3 8 V Y BIPOLAR VCA OUT offset triangle 10 Vpp 0 V 6 2 V Clock amplitude Y INPUT clock gate or trig 5 Vpp Must be the same that...

Page 18: ...ortion max at 0V INPUT audio signal 5 Vpp SHIFT OUTPUT distorted audio 12 Vpp 0 V 2 5 V 2 5 V OPTIONAL 2nd INPUT audio signal 5 Vpp Offset distortion max at 0V 0 V 4 V 8 V Intensity max at 0V Gate bia...

Page 19: ...e wave 1 Vpp max 0 V 300mV 700mV 6dB 6dB FM INPUT SEQUENCE INPUT INPUT triangle wave 10 Vpp 0 V 5 V 5 V OUTPUT sine wave 10 Vpp 0 V 5 V 5 V Crossfader TRI SINE with CV input Wavefolding control turnin...

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