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System a - 100, A-111 – Doepfer A-111-1 High End VCO User Manual

Page 13

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doepfer

System A - 100

VCO 2

A-111

13

$

H-Sync • % S-Sync

Sockets $ and % are the synchronisation inputs.
Socket $ is for hard sync, and socket % for soft sync.

&

PCV

Socket & is the pulse width voltage control input
socket for the VCO’s rectangle wave. The level of
voltage can be adjusted with attenuator 6. Fig. 15
shows pulse width modulation with an LFO.

Fig. 15: Modulation of pulse width by an LFO

/

• (

• )

• =

Sockets / to = are the VCO outputs, each sending
out a different waveform: rectangle wave (/),
sawtooth ((), triangle ()) and sine wave (=).

The frequency of the waveforms at outputs / to = is
always the same for all.

LFO

PCV

A-111