CESYG DUALFO, Инструкция по установке и эксплуатации, Страница: 15 / 32

4. ADJUSTMENTS
There are two adjustments on the DUALFO, both related to the Auxiliary LFO.
Shape Maximum Bias Trim (VR1)
The maximum range of the effect of the Shape control can be adjusted. During assem-
bly this is set to approximately 10% to 90%.
Sine Shape Trim (VR2)
The Auxiliary sine wave output is derived from the triangle waveform using a diode
shaper. VR2 can be used to fine-tune the shape of the sine wave to minimise
distortion.
Normally this is done during assembly, but if the unit is subject to excessive mechani-
cal shock or to a repair to the auxiliary LFO then it may be necessary to re-adjust VR2
to achieve the optimum sine wave shape. While it can be done with only an oscillo-
scope, it is recommended that an audio distortion analyzer is used if available. The
auxiliary LFO should comfortably achieve sine wave THD of around 1.5%.
CESYG DUALFO USER MANUAL
Page 15