No Noise Floor Shown on THD measurement?

[Audio_Guy_UofW]

Hi, just wondering why the noise floor is not being shown on my THD measurements? Running 5.20.14.
See attached.
Thanks

Mar

 

[thothsong]

In the Make a measurement panel, there's a check box for Capture noise floor, above the Start button.

 

[Audio_Guy_UofW]

OK thanks, I see that...and it is checked. These measurements are imported sweep recordings. Does it not capture the noise floor in that case?

 

[John Mulcahy]

Noise floor is only captured for live measurements, but I can add extraction of noise floor data for imported measurements as long as there is a couple of seconds of data before the timing reference signal.

 

[Audio_Guy_UofW]

That would be very useful! I can make sure to leave at least 2? seconds of silence before timing reference.

Thanks!

 

[John Mulcahy]

2 seconds is fine.