V-trig [Voltage Trigger]

There are two common ways to pass a “gate” signal around a modular synth: either a S-trig (Switch or Shorting Trigger) that simulates connecting a signal to ground, or a V-trig (Voltage Trigger) – also known as a trigger or gate – that sends a voltage to a higher level when a note is depressed or a drum is triggered, and which returns to zero volts when its done. V-trig is by far the most common format; S-trig was used on the original Moog modular systems but was not widely adopted going forward.