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doepfer

System A - 100

PLL

A-196

1. Introduction

Module A-196 contains a so-called Phase Locked

Loop circuit (PLL). A PLL consists of three parts:

VCO (linear voltage-controlled oscillator with rectangle

output), phase comparator (PC), and low-pass filter

(LPF). The three parts are connected in the A-196 with

normalled sockets to form the standard closed-loop

PLL frequency-feedback system. The normalled soc-

kets allow individual access to each part of the PLL

and enable other patches than the standard PLL (e.g.

insertion of external modules).

The VCO is equipped with the controls Range and

Offset. The range switch is used to select one of three

frequency ranges. The Offset control defines the maxi-

mum frequency of the VCO.

The module contains three different types of phase

comparators that are selected with a 3-position

switch.

The LED indicates if the PLL is locked for PC2 , i.e. if

the frequency of the internal VCO is the same as the

frequency of the external input signal.

The frequency of the built-in low pass filter is manu-

ally adjusted with the frequency control.

CV In

locked (2)

Offset

A-196

PLL

Out

In 1

Range

Out

VCO

Type

In 2

(Signal)

Out

LPF

Frequ.

1 2 3 4 5 6 7 8

Indice de contenidos

Pagina 1

doepferSystem A - 100PLL A-19611. IntroductionModule A-196 contains a so-called Phase LockedLoop circuit (PLL). A PLL consists of three parts:VC

Pagina 2 - 2. Basic principles

A-196 PLL System A - 100doepfer22. Basic principlesThe three units VCO, phase comparator (PC) and lowpass filter (LP) form a standard closed-loo

Pagina 3 - System A - 100

doepferSystem A - 100PLL A-1963Fig. 1: Internal construction of the A-196

Pagina 4 - 3. Overview

A-196 PLL System A - 100doepfer43. OverviewControls:1 Range : Three-position frequency range switchfor the VCO2 Offs. : Frequency offset contr

Pagina 5 - 4. Controls

doepferSystem A - 100PLL A-19654. Controls1 Range • 2 Offs.The frequency range of the internal VCO is selectedwith the switch 1.Control

Pagina 6 - 5. In- / Outputs

A-196 PLL System A - 100doepfer65. In- / Outputs! CV InThis socket is the control voltage input of the internalVCO. The socket is normalled to t

Pagina 7 - 6. User examples

doepferSystem A - 100PLL A-19676. User examplesFrequency MultiplicationA very important application of the A-196 is frequencymultiplication. For t

Pagina 8

A-196 PLL System A - 100doepfer8A very interesting variant of this patch is the usage ofthe 8 external inputs of the lower A-155 row. Connectthes

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Doepfer A-196 PLL Manual de usuario

Busca en linea o descarga Manual de usuario para Audio Doepfer A-196 PLL. Doepfer A-196 PLL User Manual Manual de usuario

Indice de contenidos

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