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Sunday, 30 October 2016

New version: SMA Simple Spectrum Analyser


Hi,

One user (thanks Mark), pointed out that the window of the SMA Simple Spectrum Analyser wouldn't fit on his screen. Because I use FullHD on all my PC's, I never thought about this.

Anyway, his request was more than reasonable and most spectrum analysers have their controls on the right side of the screen, so I moved everything to that position.

The result looks like this:


Hopefully, the software can be used on screens with lesser vertical resolution.

By the way and because this is a frequent question: "why is the window not sizeable?" or "please make the spectrum screen bigger".

The answer is: the spectrum screen is exactly 1000 pixels wide, because this way I can render 1000, 500, 250, 200 and 100 samples without having to mess around with non-integer values of the Y-coordinate!

This is actually a similar, why the Siglent SSA3021X spectrum analyser uses exactly 751 data points (see discussion here: http://www.eevblog.com/forum/testgear/siglent-ssa3000x-spectrum-analyzers/475/). You determine how many data points/samples you want (read: can) to capture in a reasonable time and you select an appropriate screen resolution. If you wanted to render more pixels, these would have to be interpolated: that doesn't add anything useful and costs time, especially if non-integer numbers arise.

You can download the latest release here:


(NOTE: this version was replaced by the 2016-10-30b version!)

Have fun!

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