Freeze trace - keep as overlay

QA401
1

One great feature i would like to see, if possible, is a button to “freeze” a trace as an overlay.
The trace would then act as a reference trace used when comparing and adjusting a circuit, tuning filter parameters, equalizers and whatnot.
Would that be possible? Would two freezed traces be possible? (sort of upper and lower limit lines)

2 Likes
2

I’m not sure exactly if it is what you are looking for but I frequently use snapshot.
Located in EDIT>SNAPSHOT then choose channel. It will freeze an overlay of the selected channel.
Josh

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3

Thank you, i was not aware of the snapshot, until you mentioned it, thank you!

4

Another useful tip is you can press L to snapshot and display left channel data and then press it again to hide it. Helpful if you holding probes. Same works for R key.

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5

@matt
It would be good if you could save the snapshots and load them as needed.

6

Yes, agree, that would be good. One issue is that currently the snapshot needs to be the same parameters (FFT size, window, etc) to make for a useful comparison. But maybe there could be a way to import a time series and make it persist.

1 Like
7

…or save / load all parameters with the overlay. It would be a useful feature to initially test an amplifier and then again after modification, as there could be a few weeks between.