DOEPFER A-147 Manuel - Sayfa 3

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3. Controls and indicators

1 Frequ.

This control sets the frequency of the VCLFO in a

range from 0.01 Hz (one cycle every 100 seconds) to

50 Hz (50 cycles a second).

The actual LFO frequency is determined by a

combination of manual control and any vol-

tage patched into CV input " .

2 CV

Use Attenuator 2 to set the level of the voltage at CV

input " affecting the VCLFO frequency.

3 LED ... 5 LED

LEDs 3 to 5 indicate the frequency and voltage state

of the LFO signals at their respective outputs.

If the LFO frequency is higher than about 15

to 20 Hz, our persistence of vision means

that the LEDs look permanently on.

System A - 100

4. In- / Outputs

! Reset

A gate pulse entering the reset input socket ! enab-

les the VCLFO to be synchronised with another

oscillator.

This means that the waveforms instantly go to their

zero-point, and start from there (see Fig. 1). In the

case of the triangle and sine waves, that's 0 V; with

the square wave it's about +5 V and the sawtooth it's

at half its maximum (about +3.5 V).

" CV

Socket " is the voltage control input for LFO fre-

quency. The voltage at this input is added to whatever

voltage is set on the manual control 1. The level of CV

input " can be adjusted with the Attenuator 2.

This socket outputs a triangle wave, whose frequency

is indicated by LED 3 (amplitude roughly ± 5 V).

A-147

VCLFO