AvonSynth AVS-VCO-1 사용자 설명서 - 페이지 3

{카테고리_이름} AvonSynth AVS-VCO-1에 대한 사용자 설명서을 온라인으로 검색하거나 PDF를 다운로드하세요. AvonSynth AVS-VCO-1 4 페이지. Voltage controlled oscillator

페이지 인쇄

The

User Guide

Waveform Diagrams

Sine Output

+5v

-5v

Triangle Output

+5v

-5v

Calibration Trimpots

Your new AVS-VCO-1 Voltage Controlled Oscillator was expertly

calibrated by hand for great 1v-per-octave tracking over a large

frequency range. However, over time it is possible that the

calibration could drift, or accidental movement of the calibration

trimmers could decrease the precision of the tracking. Multiturn

trimmer potentiometers are used in this module for increased

accuracy in calibration and can be turned using a small ﬂat-head

screwdriver or other suitable implement.

Recalibrating this module requires the use of accurate

multimeters, frequency counters, and precise control voltage

generators. If you are not able to carry out recalibration yourself,

the engineers at AvonSynth will be happy to recalibrate your

The Freq Init (Initial Frequency) trimpot is used to set the

frequency range of the Pitch knob. This is generally set so that

at the pitch knob's minimum value, the output frequency is just

below the audible range. The 1v/Oct trimmer is responsible for

setting the shape of the exponential relationship between the

input CVs and the oscillator's output frequency. Calibration is

carried out by monitoring an output, and feeding the 1v/Oct

input precise control voltages in 1v increments. Adjust this

trimmer until each 1v increment results in a doubling of the

frequency of the output signal.

The Bias trimmer centers the Sawtooth wave symmetrically around ground.

Since all of the outputs are derived from the sawtooth core of the oscillator,

this aﬀects the output of all waves and the Bias trimmer should be set

ﬁrst when calibrating. The Waveform Shape trimmer adjusts the symmetry

of the triangle waveform, and since the sine wave is derived from the

triangle wave, this also doubles as an adjustment of the shape of the sine.

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AVS-VCO-1

Voltage

Controlled

Oscillator

Sawtooth Output

+5v

-5v

Square Output

+5v

-5v

Initial

Frequency

Pitch

Tracking

Waveform

Bias

Waveform

Shape

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