Doepfer A-143-3 Quad LFO - Manual (Page 3)

DOEPFER DOEPFER DOEPFER DOEPFER System A-100 Quad LFO A-143-3
3
3. Controls and Outputs
1 Frequency
This control adjusts the frequency of the LFO within the
frequency range set by the range switch 2.
2 Range
Use switch 2 to select a suitable frequency range:
• L (low): minimum about 2 cycles per minute
• M (medium): normal LFO range
• H (high): moderate audio range
Pay attention that the high range is in the middle position
due to technical reasons.
3 LED
LED 3 displays the triangle signal that appears at socket !.
If the LFO frequency goes above about 25 Hz, our
persistence of vision means that the LEDs look permanently
on.
!
This is the output for the triangle wave, whose frequency is
displayed by LED 3. The output is symmetrical around 0V,
the level is about
± 7 V.
"
This is the output for the square wave. The output is
symmetrical around 0V, the level is about
± 6 V.
§
This is the output for the sawtooth wave. The output is
symmetrical around 0V, the level is about ± 7 V. To obtain
an inverted sawtooth the voltage inverter module A-175 may
be used.
Fig. 3: A-143-3 waveforms and levels