Products > Test Equipment
Siglent SDS2000 new V2 Firmware
Mark_O:
Re: narrow pulse visibility on various screens...
--- Quote from: Performa01 on January 31, 2016, 01:02:29 pm ---My computer screen where ... visibility should be better, but that’s not actually the case. In fact, visibility is significantly better on the scope than the screenshot viewed on my computer monitor. The reason for this is in the monitor profile, including settings for brightness, contrast, gamma and color space, which are optimized for natural looking photos as I do a lot of picture processing. It is obvious that the scope uses a quite different profile, optimized for graph viewing.
So it comes as no surprise that visibility of glitches is not bad on the scope, whereas it might be considerably worse on the computer screen, depending on the monitor profile in use.
--- End quote ---
I noticed exactly the same behavior, while I was evaluating the SDS1000X series. On-scope visibility fine, but visibility of traces on my PC screen substantially worse. The way I dealt with this was simply to run my screen shots through IrfanView [a free PC app], and apply an Auto-Color Adjust to them (which I can easily do in batch-mode). This was a quick one-step process, which improved screen captures significantly.
Attached is an example of your initial screenshot, adjusted:
[Updated to put a copy of your original underneath, to avoid having to scroll back and forth to compare.]
On my PC screens at least, this looks better than even your 100% Intensity version. Plus a side benefit is the fact that it also brings up other areas of the DSO screen, like the shading on the buttons, top bar, and side boxes, which tend to vanish on the raw snapshots (which also don't look as good as they do on the scope itself).
Performa01:
@Mark_O
Oh yes, this looks a lot nicer indeed! :-+
Actually I have to batch process all screenshots anyway, in order to convert the big bitmap files to PNG. I'm using Photoshop for this - next time when I have to convert some screenshots, I will see what can be done to resemble the look of the scope screen on an average computer monitor...
nctnico:
Why do you save them as bitmaps? PNG is lossless for these kind of images!
Mark_O:
--- Quote from: nctnico on February 01, 2016, 06:18:57 pm ---Why do you save them as bitmaps? PNG is lossless for these kind of images!
--- End quote ---
:-// We are saving them as PNGs. At least that's what I've always done, after conversion.
But they come out of the 1000X only as BMPs, and I assumed that was true of the 2000 as well. Perhaps not.
nctnico:
--- Quote from: Mark_O on February 01, 2016, 07:13:02 pm ---
--- Quote from: nctnico on February 01, 2016, 06:18:57 pm ---Why do you save them as bitmaps? PNG is lossless for these kind of images!
--- End quote ---
:-// We are saving them as PNGs. At least that's what I've always done, after conversion.
But they come out of the 1000X only as BMPs, and I assumed that was true of the 2000 as well. Perhaps not.
--- End quote ---
The SDS2000 screendumps I have are BMPs indeed! I forgot about that and naturally assumed a scope from this day and age uses JPEG or PNG for screendumps and not an ancient and inefficient format like BMP and not even using (RLE) compression.
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