Doepfer A-100(~ 40 MB) - Manual (Page 567)

doepfer System A - 100 CMP A-167
5
5. In - / Outputs
! + IN
The input signal fed into this socket is attenuated with
control 1 and added to the internal voltage (U
SUM
).
" - IN
The input signal fed into this socket is attenuated with
control 2 and subtracted from the internal voltage
(U
SUM
).
§ Analog Sum
At this socket the internal voltage U
SUM
is available
(see chapter 3).
$ Cmp. Out • % Inv. Cmp. Out
The Gate output $ is "high" (~ +10V) if the internal
voltage U
SUM
is positive. Otherwise it is "low" (~ 0V).
The inverted Gate output % always has the opposite
state of the normal gate output $. Consequently this
output is "low" if the internal voltage U
SUM
is positive.
Otherwise it is "high".
6. User examples
The main application of module A-167 is the genera-
tion of gate signals depending upon analog volta-
ges, e.g. a gate signal that depends upon the present
value of a LFO (triangle), ADSR or random signal can
be generated and used to control a voltage controlled
switch that on the other hand switches different control
voltages or audio signals. More examples shows the
following table:
Signal
at + In
Signal
at - In
Offset
Meaning concerning
U
SUM
at §
• > 0 (positive) offset generator
• < 0 (negative) offset generator
• > 0 (positive) inverting offset
generator
• < 0 (negative) inverting offset
generator
• • 0 subtractor
• • > 0 subtractor + (positive) off-
set generator
• • < 0 subtractor + (negative) off-
set generator