The Meter Trigger is a signal level metering object to monitor and display signal levels and set the trigger when the reference level has been reached.
Attack time control: Adjusts how the meter responds to short duration transients.
Release time control: Adjusts how long the meter takes to recover.
Reference control: Sets where 0dB on the meter refers. Sets the input level for the trigger.
Trigger: The trigger LED comes on when the reference level has been reached or exceeded.