XAOC DEVICES 1989-X3-1.1 Poczdam The Leibniz Binary Subsystem Instruction Manual
- June 16, 2024
- XAOC Devices
Table of Contents
XAOC DEVICES 1989-X3-1.1 Poczdam The Leibniz Binary Subsystem Instruction
Manual
SALUT
Thank you for purchasing this Xaoc Devices product. Poczdam [ˈpɔdʒdam] is a binary data routing solution for the Xaoc Leibniz Subsystem. It facilitates manual and remote switching between two Leibniz data sources, modifying individual bits of the data stream, and re-clocking the data with its onboard voltage–controlled wideband oscillator or any external clock signal. Poczdam is particularly useful within complex Leibniz setups where the user needs to reconfigure the data flow between multiple modules. However, it can also be employed in small creative patches, e.g., for waveform splicing, disrupting rhythmic loops, or generating digital chaos.
To better understand the device and avoid common pitfalls, we strongly advise you to read through the entire manual before use.
INSTALLATION\
The module requires 10hp 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-pin to 16-pin ribbon cable, paying close attention to power cable pinout and orientation. The red stripe indicates the negative rail and should match the dot or – 12V mark on the bus board as well as the unit. Poczdam is internally secured against reversed power connection; however, rotating the whole 16-pin header may cause serious damage t o other components of your system because it will short circuit the +12V and +5V power lines. Always pay close attention to the proper orientation of your ribbon cable on both sides!
Besides power, you need to connect Poczdam to other components of your Leibniz subsystem. Poczdam comes with three ribbon data cables with 10-pin plugs on both ends. Before installing the data cables, we advise you to read the entire manual and carefully plan your Leibniz setup. Pay attention to the proper orientation of the red stripe with pin #1 indicated by a dot or an arrow on each module. Remember that proper data transmission requires connecting inputs to outputs, just like the analog signals in your modular system.
warning: make sure not to plug the eurorack power into any data headers. Doing so will destroy your Poczdam immediately and may jeopardize other Leibniz modules connected to it!
The module should be fastened by mounting the supplied screws before powering up.
MODULE OVERVIEW
The main feature of Poczdam is switching between two data sources plugged into
its two Leibniz in ports at the back. Switching may be done manually by
pressing the illuminated button labeled source 1 in the upper section of
the front panel (fig. 1) or with a trigger/gate signal plugged into the
source select input 2 . The source data is selected together with its
associated clock and delivered to the Leibniz out1 header at the back.
Besides out1, the data from the selected source is also available in the bank
of eight binary incoming data outputs jacks 3 on the front panel. Furthermore,
apart from.
front panel overview
the data bits, the clock of the selected source is also available in the jack labeled incoming clock out 4 .
Next to the bit outputs is a bank of eight bit outgoing data inputs 5 . Signals connected there are converted to Leibniz data and delivered to the out 2 header at the back. All individual outgoing data inputs may be optionally normalled to the signals from corresponding incoming data outputs. This normalization is activated with the link button 6 .
The data sent to the out 2 header is by default clocked with the same clock as out1 ; however, you may replace the clock by plugging a signal into the outgoing clock input 7 on the front panel. One particularly suitable option is to use the onboard local clock generator. Its frequency is controlled with a rate knob 8 , and a control voltage plugged into the rate input 9 . The clock operates in three ranges switchable with a miniature slider 10 : 800–15000Hz (middle position marked Hz) , 7kHz–120kHz (lower position marked kHz), 0.1 MHz–2MHz (upper position marked MHz ), and is available at the out jack 11 .
THE PRINCIPLE OF OPERATION
The block diagram of Poczdam is shown in fig. 2. The heart of the module
is a two-state source selector (multiplexer) that switches between two Leibniz
data sources (together with their associated clock) plugged into the in1 and
in2 headers. The selection is controlled by a 2-state flipflop that may be
toggled manually or via an external trigger/
gate signal. The selected data with its clock is directly fed to the Leibniz out1 header at the back. It is also delivered as 5V gate signals to the bit output jacks on the front panel.
The signals from the front panel bit inputs are fed to the Leibniz out2 header at the back. The default state of each unpatched input is low (0V). However, activating the link feature creates a normalled connection: each input bit receives a copy of the signal from the corresponding bit out as its default state. It can still be overridden by patching anything into it.
The clock for the out2 header may also be replaced with anything plugged into the dedicated outgoing clock in jack. Regardless of the state of the link button, it is always normalled to the clock of the selected data source.
The clock generator is a separate part of the module. The frequency is controlled by CV and a knob that acts as a manual offset. note: you need to physically patch the clock out jack to the outgoing clock in jack to use it as your new clock alongside the outgoing data via the Leibniz out2 header at the back.
PATCH IDEAS
One obvious use of Poczdam is switching data sources for Jena. Plug Drezno out to in1 and Erfurt out to in2 in Poczdam. Plug out1 from Poczdam to in of Jena, and out of Jena back to Drezno. Doing so allows you to conveniently switch between using Jena as a wave shaper for audio and CV (coming from Drezno) and a stable rhythm generator or a complex LFO (with data from Erfurt)
block diagram
Erfurt with Poczdam plugged into its input allows one to select the source of the phase increment. For example, plug Drezno to in1 of Poczdam and Lipsk or Gera to in2. This setup can easily go into crazy territory if you use one of the bit outputs of Erfurt for switching sources in Poczdam.
Use Poczdam to create a temporary loop. For example, plug Erfurt into the Poczdam in1 and the Poczdam out2 into the input of Jena. Create a feedback loop from the output of Jena into in2 in Poczdam. Doing so allows you to easily switch between normal rhythm playback and something complex and chaotic. Experiment with the front panel jacks to make even more feedback connections.
Both Ostankino II (with Moskwa II) and Erfurt may act as sources of regular Leibni data sequences but with a radically different character. They may be used for generating interesting looped CV patterns when converted to analog with the DAC section of Drezno. Quickly switching between these two is a great way to introduce some variety to otherwise repetitive results. Plug Ostankino’s output into Poczdam’s in1 and Erfurt’s output into Poczdam’s in2. Plug Poczdam’s out1 into the input of Drezno. Plugging Poczdam’s out2 into Lipsk and then Lipsk back to Erfurt facilitates switching on complex data sequences with a press of the link button.
ACCESSORY
Our high quality Coal Mine black panels are available for all Xaoc Devices modules. Sold separately. Ask your favorite retailer. •
WARRANTY TERMS
XAOC DEVICES WARRANTS THIS PRODUCT TO BE FREE OF DEFECTS IN MATERIALS OR WORKMANSHIP AND TO CONFORM WITH THE SPECIFICATIONS AT THE TIME OF SHIPMENT FOR ONE YEAR FROM THE DATE OF PURCHASE. DURING THAT PERIOD, ANY MALFUNCTIONING OR DAMAGED UNITS WILL BE REPAIRED, SERVICED, AND CALIBRATED ON A RETURN-TO- FACTORY BASIS. THIS WARRANTY DOES NOT COVER ANY PROBLEMS RESULTING FROM DAMAGES DURING SHIPPING, INCORRECT INSTALLATION OR POWER SUPPLY, IMPROPER WORKING ENVIRONMENT, ABUSIVE TREATMENT, OR ANY OTHER OBVIOUS USER-INFLICTED FAULT.
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RETURN POLICY
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GENERAL INQUIRIES
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ALL RIGHTS RESERVED. CONTENT COPYRIGHT ©2022 XAOC DEVICES. COPYING, DISTRIBUTION OR ANY COMMERCIAL USE IN ANY WAY IS STRICTLY PROHIBITED AND REQUIRES THE WRITTEN PERMISSION BY XAOC DEVICES. SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT PRIOR NOTICE. EDITING BY BRYAN NOLL.
References
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