REW trouble with LF Waterfall

[jhuang]

I've run into an weird issue with REW. When I measure the sweep in REW, I can view the LF Waterfall no problem. However, if I save the measurement, exit REW, open REW, and load the previously saved measurement, LF Waterfall does not work. It only shows a blank graph. Am I doing something wrong?

[Hakka]

You might need to click on 'generate waterfall' again, I don't have REW with me at the moment so I can't check it.

[brucek]

Waterfall, Decay, and Energy time are generated from the impulse response and require you to 'press the button' to regenerate the plots when you reload......... as Hakka already pointed out above.

brucek

[jhuang]

I've hit the generate button a few dozen times, changing parameters hoping to make it work. For the Impulse response, I get no problems at all. Even the Decay works no problem. It is only the Waterfall. I'll try installing the software on different computers and see if it makes a difference.

[jhuang]

It must be a bug with the installation on one of my computer. I use a laptop (w/ external USB Creative Live) to acquire the data and do some initial analysis, but then transfer it to my main computer for more thorough analysis. I checked a saved measurement and it comes up fine on my laptop, but won't on my main computer. I'll try uninstalling/reinstalling REW. Thanks for the help!

BTW, what is the difference between "LF Waterfall" and "LF Decay"? They seem to both display signal attenuation with respect to time, at different frequencies.

[brucek]

BTW, what is the difference between "LF Waterfall" and "LF Decay"?

Waterfall is in 3D and looks cool...............