Main window tie to RTA graph window issue

[dlr]

I noticed that when the RTA window is open (this after a measurement displayed) that if a measurement that's in the main window is clicked then that measurement is displayed in the RTA window. It had disappeared when I clicked the "Stepped sine" button, but then cancelled. Clicking a main window to view it there caused it to display in the RTA window. That is definitely welcomed, I was glad to see that. However, the distortion overlay in the RTA graph remained unchanged. It had the distortion from the last measurement I had made, in this case it was the single tone THD response. I had thought to print the graph of a re-displayed THD measurement, but I did not test whether or not the distortion data for the re-displayed graph would be reproduced in the print output or the previous unchanging distortion data would. If a window capture is used instead, then the capture will have distortion data uncorrelated to the displayed THD graph. This may be the same for other types of measurements, that I did not test.

I just ran another test. I had forgotten that if a new measurement is made, then a previous one is clicked in the main window that the RTA becomes an overlay with current and previous measurement. I like that. The only problem is what happens if the "Stepped sine" button is clicked and the current measurement is removed in preparation for a new measurement, but is then cancelled. The previous measurement is gone, yet the "overlay" aspect remains. At that point the "current" measurement is gone, yet the "spectrum" checkbox remains, but is ineffective. It seems that the current measurement data is gone, but all actions respond as if it is present, it then the distortion data might be interpreted to be related to the overlayed measurement.

The fix may be to leave the current measurement data in the RTA graph when the Stepped sine button is clicked and only clear it from the graph when that measurement begins.

Edit: This was for single tone RTA measurements.

 

[John Mulcahy]

You can view the distortion panel for a saved RTA measurement on the SPL & Phase graph if the graph controls option for that is selected. The RTA panel shows data for the current measurement. I'll clear the RTA distortion panel when a stepped sine measurement starts or is cancelled without capturing data for a point.

 

[dlr]

You can view the distortion panel for a saved RTA measurement on the SPL & Phase graph if the graph controls option for that is selected. The RTA panel shows data for the current measurement. I'll clear the RTA distortion panel when a stepped sine measurement starts or is cancelled without capturing data for a point.

Thanks, John. I was aware of the saved RTA data distortion display, but I like being able to see an overlay of a previous measurement on the current one in the RTA without needing to make it "current" in the main window and then puling up the Overlay window to compare. At times I make a series of tests with the RTA being temporary, but I'd like to see the overlay without the multiple steps now necessary. I think that keeping the data in the RTA window until the stepped sine is started is preferable. At times I would like to see an overlay of current and previous quickly now that I know it's there as quick and easy. This avoids making the latest one "Current" in the SPL & Phase that would then also have to be brought up in the Overlay and the desired previous one selected to see the overlay, also maybe disabling other previous ones already on display in the Overlay window. The "Current" (temporary) one has to be selected and removed since it was just a quick view desired.

It's a convenience feature, yes, but I would think just keeping the current measurement data in the RTA window until the stepped sine is activated would be a simple way to handle it. I wasn't asking to have the previous distortion data displayed in the RTA, but to keep the current data in the graph that matches the distortion data.

 

[John Mulcahy]

I keep reading that, but I can't work out what it is you want to happen or how that differs from what happens now.

 

[dlr]

I keep reading that, but I can't work out what it is you want to happen or how that differs from what happens now.

It's probably not worth persuing. As you pointed out and I had been aware, for a saved measurement it's available in the SPL & Phase panel. The only issue is a fresh measurement that hasn't been saved. I'm often making a number of different measurements without saving. At times I've clicked on the Stepped Sine button, only to cancel. On cancel the current measurement is deleted from the RTA graph. If unsaved, it's gone. I've done that to check the settings I had used on an S-THD measurement, but had not saved the previous one. I'll just need to be sure to save the current measurement or make it current in the SPL panel. It would just be convenient for the occasion when I haven't saved the current measurement.

 

[John Mulcahy]

At times I've clicked on the Stepped Sine button, only to cancel. On cancel the current measurement is deleted from the RTA graph.

OK, I understand now. I have fixed that for the next build.