Gate Time
Value range of 000.. 508, 1.00...1.02
<Gate time> is the duration following a trigger during which no
new triggers are accepted. This time is displayed in milliseconds
(000 to 508).
Source
<Source> determines how the envelopes are triggered.
Aud - Triggering via audio. If you have not inserted a plug in the
<Trigger In> jack, the 4-Pole accesses the <Audio In> signal.
MID - Triggering via MIDI Note On/Off messages sent through the
designated channel (refer to Section 5.6, <MIDI Channel>).
ALL - Triggering via both audio and MIDI.
E20