Impulse peak vs First sample

[Vladimir_1953]

Hello everybody!
How to make the program measure not by the maximum pulse, but by its beginning? Switching modes in the Impulse Response window The calculator set m = 0 impulse peak / first sample does not change anything - the marker is set to the top of the pulse (100%)
What additional steps should I do to make this work?

 

[John Mulcahy]

For existing measurements you can use the Impulse graph controls options to set t=0 at the IR start or at whatever position you place the graph cursor. For new measurements the t=0 position depends on the timing reference used, if there is none the IR peak will be used.