Doepfer Dark Link USB/Midi to CV/Gate Interface - Manual (Page 12)

Dark link DOEPFER
12
Functions
For setting these parameters, MIDI Program Change messages coming from your MIDI device are used.
Normally, you will have to press the program change keys on your MIDI keyboard or MIDI synthesizer while
in „learn“ mode. Bear in mind that some manufacturers count the MIDI program change numbers from 0 to
127 rather than from 1 to 128 as defined by the MIDI standard. If the lowest program change number you
can send with your MIDI device is 0 (zero), you have to subtract 1 from the program change numbers in the
table above because in this case the program changes of your device range from 0 to 127 instead of 1 to
128. For some devices (especially software sequencers) the type of program change numbering
can be selected. In this case you should use the 1 to 128 range to comply with the numbers in the table
above.
The program change messages must be sent on Dark Link‘s MIDI channel (please refer to section „MIDI
channel selection / learn button“ on page 9).
(2) Velocity on/off
These program-change messages are used to select whether the note-on velocity affects the control volta-
ges CV3 and / or CV4. If velocity is „off“, only volume (CV3) respectively the unassigned controller (CV4) is
used to generate the control voltage. If velocity is „on“, the volume or controller value is multiplied with the
note-on velocity, i.e. the CV value changes with every new note event as the velocity of the note event is
used to calculate the control voltage together the volume message (CV3) resp. the unassigned controller
(CV4).
(3) Retrigger on/off
With this parameter you can select whether a new gate/trigger pulse is generated when playing legato (i.e.
playing a new key on the keyboard without releasing the key played previously). The factory default setting
is „retrigger off“. Additionally, the MIDI controllers legato (controller #68) and sustain (controller #64) affect
the gate output in the usual way.
(4) Trigger polarity
With this function you may select between not inverted/normal trigger (meaning +5V/+12V when key
is pressed and 0V when no key is pressed) and inverted trigger (meaning 0V when key is pressed and
+5V/+12V when no key is pressed). If your synthesizer might behave in a reversed way (envelopes are
started when key is released instead of being pressed) please simply change the trigger polarity.
When Dark Link generates a switch trigger (see page 15/16), the polarity also has to be inverted.
(6) CV1 Key Assign Mode (Note Priority)
These program change messages adjust the type of assign modes for CV1.
• If „highest note“ is selected, the highest key pressed on the MIDI keyboard is used to calculate CV1 if
more than one key is being held.
• In the „last note mode“ always the last note played (chronologically) is taken as CV1. „Reference note“
means that only the reference note is accepted. This feature is useful if you want to trigger different
devices from the same MIDI channel using two or more Dark Link‘s. In this case you have to set the
reference keys for each Dark Link unit to a different value.