How to insert, as an input variable within formula, the total time window on scope?

How to insert, as an input variable within formula, the total time window on scope (i.e. 20ms/div x 10 div = 200ms)?
BELOW IS AN EXAMPLE OF ISSUE:
FORMULA FOR ACTION INTEGRAL:
STATISTICS:
Input variable: DPO4034(CH1);
Check Box: number of samples.
FORMULA
Input variable 0: DPO4034(CH1); alias: x0
Input variable 1: "Total Time Window on Scope???"; alias: x1
Input variable 2: Number of Samples (CH1); alias: x2
Under Operation Setup: Formula
Y= (x0^2)*(x1/x2)
Output: Processed Data 1 (CH1)
THEN USING STATISTICS:
Input signal: Processed Data 1 (CH1)
Check Box: SUM
Output: CH1 Action Integral [A^2s]
Solved!
Go to Solution.

Hi again Catherine,
I have now added another TekScope (TDS3032B) along with the DPO4034 and run the same work-around on the TDS3032B using CH1 as the "real" signal channel and CH2 as the "burst width" channel. However, the value returned for CH2 is nominally 99E+36 (min 99E+36, max 99E+36) with very few retrievals of correct burst width (~200ms). Seems the SignalExpress program is unable to consistently retrieve from TDS3032B the actual burst width (scope's time scale/window) and defaults to 99E+36 value. Any ideas on what is occurring and how to make it work? Attached are some screen captures to help guide discussion.
Regards,
Michael
Attachments:
TDS3032B - incorrect burst width.png ‏301 KB
TDS3032B - correct burst width.png ‏287 KB
DPO4034 - always correct burst width.png ‏302 KB

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