Installation - Xaoc Devices SAMARA Operator's Manual

module
explained
SAlut
Thank you for purchasing this Xaoc Devices prod-
uct. Samara is a "Swiss Army Knife" type of mod-
ule, intended to serve the most common voltage
and audio signal processing purposes such as at-
tenuation, offsetting, mixing, inverting, and even
basic waveshaping. We have designed it to com-
plement the ever-popular Batumi module but it
will happily serve all these functions on its own.

inStAllAtiOn

The module requires 10hp worth of free space
in the eurorack cabinet. The ribbon type power
cable must be plugged into the bus board, pay-
ing close attention to polarity orientation. The
red stripe indicates the negative 12V rail and is
supposed to point in the same direction on both
the bus board and the unit. The module itself is
secured against reversed power connection,
however reversing the 16-pin header
serious damage to other components of your
system, because it will short-circuit the +12V
and +5V power rails. The module should be fas-
tened by mounting the supplied screws before
powering up. To better understand the device,
we strongly advise the user to read through the
entire manual before using the module.
BASic feAtuReS
Samara features four channels—each with two
inputs and an attenuator, additional switchable
offset generators, four voltage level and polarity
indicators, two adders with switchable scale,
and a precision four-channel processor that se-
lects minimum and maximum voltage. See the
block diagram (fig. 4) on page 5.
Looking at the front panel layout (fig.1), There
are four identical channels. Each channel features
a regular in input
input
adjusted by an active attenuator. Each unused in-
put is normalized to 0V, hence this arrangement
allows for two independent channels of normal
attenuation, or inverting attenuation, or comput-
ing a difference between two voltages or signals.
Additionally, two sources of a stable +5V
voltage are switchable in channels 1 and 3,
activated by pressing the corresponding illu-
minated button
inputs before attenuation. Thus, if nothing is
patched to the inputs of channels 1 and/or
3, they can be used as a source of constant
voltage, from 0 to 5V. The resulting signal or
voltage, after being manually attenuated by
may cause
the level/ofst knob
corresponding out outputs
To achieve independent control over scale and
offset two channels must be utilized: one for
offset (with the 5V offset toggle engaged
and nothing patched into the inputs) and an-
other one for scaling.
A bi-color LED
ity of the voltage through corresponding bright-
ness and color. For audio signals, fast blinking of
red and green yields a yellow-orange mixture
with intensity corresponding to signal level.
Note that you may use the individual outputs
to re-direct the processed channels to other
channels. For example, an attenuated signal or
2
AttenuAtiOn, inVeRtinG & OffSet
1 as well as an inverting inv
2
. The difference between these inputs is
3 . This offset is added to the
5
, is available on the
7 indicates the value and polar-
6 .