SALUT
Thank you for purchasing this Xaoc Devices
product. Batumi is a fully volt-
age-controlled quadruple digital low fre-
quency oscillator module with lots of inter-
esting user-customizable features. Each LFO
channel can be used independently or in one
-
tal frequency range spans from 28 hours (in
voltage controlled divide mode) up to 500Hz.
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, paying close attention to polar-
ity orientation. The red stripe indicates the
negative 12V rail and should align with the
dot, –12V or red stripe marks on both the
unit and the bus board. The module itself is
secured against reversed power connection,
however reversing the 16-pin header may
cause serious damage to other compo-
nents of your system by short-circuiting
the +12V and +5V power rails. The module
should be fastened by mounting the supplied
screws before powering up. To better under-
stand the device, we strongly advise the user
to read through the entire manual before
using the module.
MODULE OVERVIEW
Batumi features four identical LFO chan-
1
controls one of the four main parameters as
determined by the global mode setting. In
free mode, each slider determines its own
channel’s frequency (from 0.01Hz to 100Hz).
In the other three modes, slider 1 acts as a
master to the remaining channels’ frequen-
cy, allowing the remaining sliders to perform
other actions. For example, in phase mode,
sliders 2–4 quad
mode, sliders 2–4
and in divide mode, sliders 2–4
division of the master frequency. Frequency
can also be set with increased precision by
entering zoom mode, described later in this
manual.
The frq/ph/div input 2 allows the cor-
responding slider parameter to be voltage
controlled (1V/oct). Doing so allows for an
extended frequency range from 500Hz all the
way down to 53 minutes! Expected voltage
is –5V to +5V. Above 100Hz, the waveforms
tend to lose some precision and amplitude.
The reset/sync input 3
trigger input that can serve as either cycle
reset or external tempo sync depending on
the jumper settings described later in this
manual. The sine output 4 produces a sine
waveform (–5V to +5V). In quad and phase
modes, the sines are shifted in relation to one
another. The saw/asgn output 5 produces
either a default upwards saw (ramp) wave-
form (–5V to +5V) or one of the user-select-
able shapes described later in this manual.
The square output 6 produces a square
waveform (–5V to +5V).
The LFO sync mode toggle section 7 allows
the four oscillators to run free or sync to the
master, as follows:
1. FREE LFO MODE
To enter this mode, click the central button
until the red, free LED lights up. Now, all
four LFO channels work independently.
2
module
explained
