Paia 9720, Инструкция по сборке и использованию

Страница: 22 / 28

22 9720 VCO 010321
input is routed through the Glide processor
as indicated by the arrow pointing into the Glide control.
OscA Pitch CV Input 2. This input is scaled
1V/oct. The final pitch of either oscillator is
set by the setting of the Pitch control and the sum of the
voltages at the P1 and P2 inputs.
OscA Pulse Width Input. When there is no
external input to this jack OscA PW defaults to a roughly 20% Duty Factor. Plug-
ging into this input provides control of PW over a range of -5V (lowest DF) to +5V (highest DF)
with 0V for 50% DF square wave.
OscA norm/lfo switch. Switching to LFO rescales OscA from 1V./oct. to about
250 mV/oct so that the Pitch knob produces 50 Hz. at max and 1/60 Hz (1 cycle/
minute) at min. CV inputs are still active but at this same increase in sensitivity.
OscA Sync input. Provides a "soft-sync" input for OscA. Soft sync timbres are
characterized by harmonic partials that may increase in amplitude as their order increases, or
may be absent in other than the odd/even order patterns that define ramp, triangle and pulse
waveforms.
OscB Pitch CV Input 1. The arrow indicates that this input is normalized to the
output of the glide processor and consequently OscA P1. Inserting a plug into this input
overrides the normalization for independent control of the oscillator. The
OscB P2 input serves
the same function as the corresponding input on OscA.
OscB Frequency Modulation Input. This input provides a linear 1kHz/V input.
Only positive voltages produce a change.
OscB Pulse Width. The arrow pointing into this indicates that it is normalized to
the output of the Modulator. Pulse Width (Duty Factor) is a function of both the
Pulse Width knob and the voltage at this input. Input sensitivity is scaled so that 1V
change at the input produces a 10% difference in Duty Factor.
VCO Outputs
All VCO outputs are DC coupled 5V peak to peak centered about ground. For example, the
Pulse outputs are -2.5V when low and +2.5V when high at any frequency or Duty Factor.
Ramp Output- Triangle Output-
Odd and even harmonics Odd harmonics only
Pulse Output Sine Output
Harmonics depend on DF About 5% harmonic distortion.
OscA Glide. Sets how fast oscillators respond to Pitch CV changes. At "min" fully CCW the