2
SALUT
Thank you for purchasing this Xaoc Devices
product. Drezno II
[ˈdrɛznɔ]
is a component of
the Leibniz Binary Subsystem, a family of 8-bit
signal processing devices offering compre-
hensive manipulation of signals and voltages
in the digital domain. Drezno II is the input/
output front-end of the system consisting of an
analog-to-digital converter (ADC) and a digi-
tal-to-analog converter (DAC). In other words,
it converts from continuous analog signals to a
stream of digital numbers from 0 to 255 (the
binary data) and from a stream of digital num-
bers to an analog signal. These numbers are
transmitted using eight parallel binary (two-
state, on/off) signals that may be gates, clocks,
rhythms, etc. Even on its own, Drezno II can be
used for waveshaping of analog signals and
voltages based on their binary representation.
The two halves of the module may be used en-
tirely independently or linked through the data
ribbon cable, possibly with other Leibniz mod-
ules installed between the ADC and the DAC.
Drezno II is an upgraded version of the orig-
inal Drezno released in 2017. It uses new
converters of much higher resolution, which
results in a lower noise floor and higher ac-
curacy down to the lowest bit. It can be used
for quantizing pitch voltages. Potentiometer
ranges are factory calibrated for the chromat-
ic scale within 10Vpp (128 semitone steps)
and 20Vpp (256 semitone steps).
To better understand the device and avoid
common pitfalls, we strongly advise the user
to read through the entire manual before us-
ing the module.
INSTALLATION
Drezno II requires 12hp worth of free space in
the Eurorack cabinet. Always turn the power
off before plugging the module into the bus
board using the supplied 16-wire ribbon ca-
ble, paying close attention to power cable pin-
out and orientation. The red stripe indicates
the negative rail and should match the arrow
head or -12v mark on the bus board and the
unit. Drezno II is internally secured against
reversed power connection; however, flip-
ping the 16-pin header
may cause serious
damage
to other components of your system
because it will short-circuit the +12V and +5V
power lines.
Besides power, you need to pay attention to
properly connect the Leibniz interface (fig.
1). For standalone operation (using Drezno
II without any additional Leibniz modules),
bridge the out and in headers with the sup-
plied 10-wire ribbon data cable. For expand-
ing your Leibniz setup, use the additional ca-
bles included with your other modules in the
subsystem. The general rule is to connect the
out header of Drezno II to the in header of
some other module that will receive the ADC
data (e.g., Rostock, Poczdam, Jena) and to
connect the out header of some other mod-
ule that provides data (e.g., Ostankino, Erfurt,
Jena, etc.) to the in header of Drezno II.
avoid
plugging out to out.
Observe the arrow-
head or dot indicating the red stripe orien-
module
explained
