User manual
3
front panel
overview
1
2
tive gate is logic 0. Although Gera will work
with smoothly changing signals within the
entire range of Eurorack voltages, we recom-
mend plugging standard Eurorack gates and
square waveforms for the best results.
Above the input jacks is a bank of eight illumi-
nated manual tact switches
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, each corre-
sponding to a gate input of the same number.
Pressing the button toggles between taking the
input gate signal as-is and taking the inverted
state of it. The result of this gate (inverted or
not) is shown in the red backlight of the button.
The eight gate signals affect the corresponding
eight bits of the Leibniz data utilizing the logic
function AND. In other words, every bit from
the Leibniz bus is passed through only if the
corresponding gate is active, which is indicat-
ed by the illumination of the switch.
PRINCIPLE OF OPERATION
There are eight binary AND gates inside
Gera. These gates have two inputs: one (a) is
connected to the individual data bit from the
Leibniz interface, and the second input (b) is
connected to the jack and button on the front
panel. Thus, each gate may affect one bit of the
binary data according to the truth table of the
For example, if the gate signal in the input jack
the backlight turns on. This state is sent to the
AND gate together with the input on the Leib-
performed on the binary data on the Leibniz
bus passes the bit #7 unchanged. However, if
button #7 is switched to invert while the gate