Doepfer, System a-100, Synthesizer voice a-111-5 – Doepfer A-111-5 Synthesizer Voice User Manual
Page 21
DOEPFER
System A-100
Synthesizer Voice A-111-5
21
Jumper Overview
Name Function
Explanation Factory
default
JP1
A-100 Bus
Bus connection
bus cable
JP2
CV Bus
Connects the CV line of the A-100 bus to the VCO frequency control
voltage input (in addition to the VCO F socket)
installed
JP3
Gate bus
Connects the Gate line of the A-100 bus to the switching contact of the
ADSR Gate socket
installed
JP4
VCO tune range
Adjusts the range of the VCO tune control:
Installed
Æ tune range ~ six octaves
Installed
Æ tune range ~ one octave
not installed
(connected to one
pin only)
JP5 Audio
Æ Bus/+5V
Connects the audio output to +5V line (!) of the A-100 bus
Can be used only for special applications and if the +5V line of the A-100
bus board is unused. Otherwised problems will occur.
not installed
JP6
Relation VCO/ext. signal
Adjusts the loudness relation of the internal VCO and the external audio
signal:
installed
Æ VCO only
not installed
Æ VCO and external signal with same level
installed
(one pin only)
JP7
Inverter input
Connects LFO1 output to the internal inverter
upper pin = LFO1 out / lower pin = inverter input
installed
JP8
Inverter output
Connects the output of the internal inverter to the socket LFO1
The factory default is inverted LFO1, the inverter can be used for other
applications too (e.g. inverted ADSR or LFO2 output in combination with
JP9 or JP10, or direct output of LFO1 or LFO2 without inverting)
left pin = socket labelled "LFO1" (via 1k protection resistor)
right pin = inverter output
installed
JP9
ADSR out
Internal ADSR output
- (single pin)
JP10
LFO2 out
Internal LFO2 output
- (single pin)
JP11
VCF tracking source
Selects the CV source for VCF tracking (can be turned on / off / half by
means of the Track switch):
Upper position: VCF tracking controlled by the CV line of the A-100 bus
Lower position: VCF tracking controlled by the VCO F socket
installed
(lower position)
JP12
CV Bus to VCF
Connects the CV line of the A-100 bus to the switching contact the VCF F
socket.
not installed