Doepfer A-167 Analog Comparator / Offset Generator / Subtractor - Manual (Page 4)

A-167 CMP System A - 100 doepfer
4
4. Controls
1 + In • 2 - In
The controls 1 and 2 are the attenuators for the
voltages fed to the sockets ! resp. ".
3 Offs.
This control adds a manually adjustable Offset vol-
tage, i.e. a fixed value is added to the internally calcu-
lated voltage difference a
1
• In + - a
2
• In - . The adjustable
offset range is approximately -10 V (fully counterclock-
wise) to +10 V (fully clockwise). In the middle position
the offset is approximately 0 V.
If only one of the inputs is used the module works as
an offset generator (and attenuator); the attenuated
and - if input " is used - inverted voltage with offset is
available at the Analog Sum socket § (see fig. 2 and
chapter 6).
4 Gap
This control is used to adjust the hysteresis (see
chapter 3 for details).
Fig. 2: A-167 as attenuator / offset generator
5 Comp. Function
LED 5 lights up if the internal voltage U
SUM
is positive
(> 0V) and consequently the Gate output is "high" (~
+10V).
Original
Signal
U =
+ In + Offset
Gate
Gate
Offset
Offset
SUM
U =
- In + Offset
SUM