Level (V)
Specifies the voltage threshold for the digitizer to use for edge triggering. The digitizer triggers when the trigger signal passes through the threshold you specify with this parameter and the trigger signal has the slope you specify with Slope.
Valid Range—The values of Range (V) and Offset (V) determine the valid range for the Level (V) on the channel you use as the Source. The value you pass for this parameter must meet the following conditions:
Level (V) ≤ (Range (V)/2) + Offset (V)
Level (V) ≥ (–Range (V)/2) + Offset (V)