Exchange Port Expander Module
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Exchange is organised into 8 inputs and outputs with buttons for each input (white) and output (blue). Exchange behaves like ‘virtual patch cords’ between the modules connected to its inputs and outputs. To connect an input to an output, the input button is first pressed, then the output button. An input can connect to more than one output, which is set by pressing more than one output button in turn.
Are inputs mixed when multiple inputs are connected to a single output?
An Exchange output can only be connected to a single input, like connecting patch cables between modules. The inputs will not be mixed into the output. Instead, each time an input is connected to the same output, the input will replace the previous input.
What about normalled inputs in my other modules?
Exchange can only patch signals available at its inputs. Other connected modules may have ‘normalled inputs’, where a signal is internally connected when an input jack is removed. If this internal signal is output by a module, it can be connected to another Exchange input (including chain inputs using Expander) and selected to behave the same as the disconnected input on the connected module.
Features
- 8×8 digitally-controlled analog patching matrix
- Signal range: -10V to +10V
- 64 programmable preset slots
- USB MIDI note/PC preset change control
- Trigger sequence/trigger random/CV preset change input with programmable preset sequence range
- 8 patch chain inputs and outputs (on module rear)
- Programmable selection between an individual chain and jack inputs
- Automatic detection of input jack insertion, and switching between chain and jack inputs
- Highlighting of connection routes for inputs/outputs across chained modules
- Data Bus for synchronising presets and highlighting connections across multiple modules
Specifications
- Width: 12HP
- Height: 3U (Eurorack)
- Depth: 32mm (without power connector)
- Current: 12V: 7.7mA, -12V: 7.4mA, 5V: 93mA
- Assembly: fully assembled and tested
Exchange modules can be chained together using the patch chain and data bus cables. There is one patch chain input and one output connector on the rear of the module. A patch chain output on one module can be connected to any patch chain input on another module. Additionally, these patch chain inputs and outputs can be brought as jack sockets to the front panel using the Expander module. Each corresponding chain and jack input are selectable to connect to the corresponding input of the switching matrix. Each corresponding chain and jack output are both connected to the corresponding output of the switching matrix (see the block diagram below).
The data bus connectors allow Exchange modules to communicate with each other. There are two connectors on each module to allow them to be easily connected in a chain to form a set of shared communication connections known as a ‘bus’. The bus allows the modules to communicate their settings, e.g. when one module changes preset, all other connected modules can also change preset so they can form a larger patch together. Alternatively, Exchange can be configured to use the CV and gate lines of the Eurorack power header as the data bus, provided they are not being used by other modules.
Note: Exchange is not supplied with any chaining cables, they must be purchased separately.
