Three Independent AD Envelopes

Make the envelope in cycle mode, where it repeats the envelope.
Trigger input for each envelope. Input is normalled to the next input.
Retrigger happens only in the decay phase. Triggers received in the attack phase are ignored.
Switch for the range of attack/decay time.
Slow (position:left) - 8 seconds for attack/decay time each.
Fast (position:middle) - 0.2 seconds for attack/decay time each.
Middle (position:right) - 0.5 seconds for attack/decay time each.
Outputs for each envelope. 0-8V

http://hikari-instruments.com/manual/TripleADManual.pdf