The A-165 contains two separate trigger modifiers to use with logic/digital levels (Gate/Clock/Trigger). Each half of the module enables signals generated by the A-100 to communicate with other instruments (such as an external sequencer), or is simply used where you want to reverse a trigger polarity.
Whatever signal is patched into the input is inverted by the module, and fed out of the Inv Out (inverted output) socket. At the same time a trigger signal of roughly 50mS is generated every time an edge of the trigger pulse is sensed (negative as well as positive). This trigger signal is available at the +/- output.
Two LED’s act as indicators showing the level of signal available at the two outputs.
