CV/gate

CV/Gate is an analogue method of controlling monophonic synthesizers. It consists of a control voltage (CV) which determines which pitch to play and a gate signal which turns the sound on and off. Gate is a positive going voltage and is also known as V-Trig (voltage trigger). Almost all all modern synthesizers use V-Trig. S-Trig (switch trigger) is a switch to ground signal and is not much used any more.