DOEPFER Quad AD/LFO A-143-1 Руководство - Страница 6

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Quad AD/LFO A-143-1

3. Controls, Inputs and Outputs

Trig. In :

trigger input

Socket ! is the trigger input of the corresponding unit. The

positive edge of this signal triggers the AD generator. If the

unit in question is used as an LFO, a dummy cable or jack

plug can be patched into this socket. Otherwise the LFO is

retriggered by the comparator output Cp of the preceding

unit because of the normalling of the trigger socket (for

details concerning the retrigger function please refer to page

2).

The trigger inputs ! are normalled in that way:

 Trigger input #1 is normalled to Cp #4

 Trigger input #2 is normalled to Cp #1

 Trigger input #3 is normalled to Cp #2

 Trigger input #4 is normalled to Cp #3

Provided that the four mode switches 1 are set to AD and

the trigger inputs ! are left open the module works as a

complex 8-stage LFO with four adjustable rise and fall times

(A/D controls 2 and 3), segment levels (mix polarizer

controls 4) and segment distances (threshold controls 5).

System A-100

This switch defines the function of the corresponding unit. In

the upper position (AD) the envelope mode is selected, in

the lower position (LFO) the free-running mode.

Remark: In LFO mode a dummy cable or jack plug should

be inserted into the trigger input of the corresponding unit.

Otherwise the Cp output of the preceding unit will retrigger

the LFO (see page 2) because of the normalled trigger

socket. This is of course only important if this special

retrigger behaviour is not desired.

These controls set the attack time and the decay time. The

voltage at the envelope output § rises to the maximum, in a

time determined by the setting of the attack knob. After the

attack phase is finished, the voltage falls down to zero, in a

time determined by the setting of the decay knob.

Socket

The LED

range is about 0...+8V in the AD mode, +0.5...+8V in the

LFO mode.

AD/LFO :

mode switch

Attack:

attack control (rising slope)

Decay:

decay control (falling slope)

Env x:

envelope output (x = 1...4)

envelope display (LED)

is the envelope output of the corresponding unit.

displays the envelope's course. The voltage

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