User Guide

Learn the MOD Jack Assignment (Synth 1)
If using Single Mode , you can also assign a function to the MIDI 1U’s MOD [E] jack using the
LEARN button. Specifically:
1. If the LEARN [1] button is not lit, press it twice .
The LEARN button flashes blue , indicating the MIDI 1U is in LEARN MOD+CH mode, and is
awaiting a MIDI message.
In the following steps you will be learning the synth 1 MIDI Channel and MIDI CC# you want
assigned to the MOD [E] jack, plus that jack’s CV Polarity.
2. Press the CLK ÷ [2] button to toggle between unipolar (0-5V) or bipolar (±5V) operation for the
MOD [E] jack. Specifically.
Unipolar : GREEN button: If the CLK ÷ button is solid green when learning the MOD jack
assignment, then the MOD jack’s output voltage will be set to unipolar mode.
(i.e. CC Values of 0-127 = 0V - 5V).
Bipolar : RED / GREEN button: If the CLK ÷ button is flashing red / green when learning
the MOD jack assignment, then the MOD jack’s output voltage will be bipolar
(i.e. CC Value of 64 = 0V; CC Value of 0 = -5V; CC Value of 127 = +5V).
3. Send the MIDI 1U a MIDI message using the MIDI CC number that you want assigned to the
MIDI 1U’s MOD [E] jack.
MIDI 1U will automatically assign its MOD [E] jack to the CC# sent, while simultaneously setting
the synth 1 MIDI channel to match. It will assign the desired polarity to that jack, and extinguish
the LEARN button.
For example, if you turn a Portamento Time (CC 5) knob on a MIDI controller assigned to
Channel 3, then MIDI 1U synth 1 will automatically assign itself to respond to CH 3, and it will
configure its MOD out jack to transmit a control voltage based on Portamento Time (CC 5) data
from your MIDI source.
Additionally, MIDI 1U will automatically save all learned settings ( CLK ÷ button flashes green ) after
2 seconds of MIDI activity, ensuring it returns to exactly the same state after a power cycle.
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