The Leq(A) window menu lets you choose the length of time the signal is measured before an average value is calculated. Settings range from 1 second to 2 minutes.
When the Leq(A) meter is in INF (infinite) mode it is constantly averaging the signal without a floating averaging window.
The Reset button lets you manually reset the start time of the Leq(A) measurement window.
When enabled, causes the start time of the Leq(A) measurement window to be automatically reset whenever playback starts in Pro Tools.
When enabled, causes the Leq(A) measurement window timer to pause when playback stops, and resume when playback begins again.