Here waterfall image how my SSA3000X display it. It show level only with color.
(I can not test without this AMK-SSA3000X Option because permanent Option can not remove using SSA GUI)
This looks very different what PC software EasySpectrum image @Bicurico posted and it looks 3-d waterfall.
(note also image quality when used JPG or PNG where PNG wins like 10-1. I hope Siglent add this PNG and make it as default. Peoples can take selfies and scenery or what ever art pictures using JPG but this is not suitable for this kind of technical document images.
d scenery or what ever art pictures using JPG but this is not suitable for this kind of technical document images.
Quoted scenery or what ever art pictures using JPG but this is not suitable for this kind of technical document images.
That is not correct. JPEG can provide a similar image quality as PNG, but it depends on the parameters (i.e. quality level, compression factor) that are used for generating them. If the screenshots in JPG are inferior in quality to PNG shots then this isn't the fault of JPEG but of Siglent because they set the JPG parameters in their firmware to low quality.
Not at all if we look result file size.
Original TFT BMP is 1843254 bytes.
Perhaps need some lesson? PNG is a lossless compression format when JPG is lossy.
You can try your self some exercises if you never have done.
After convert SSA 1.8M BMP to PNG so that PNG file size is around 30k. Look result. (file size depends what you have in picture, because it IS lossless. But also this is why it pack well this kind if images where image do not have nearly anything)
Then do same using conversion to JPG so that result is around same file size. Look result.
But, if you take normal camera image situation is very very different if look PNG and good quality JPG file sizes. In this case JPG win 10-1. Also in normal photograph, it is not so criticalk (usually( if we loose something..
And vice versa... in this kind of SSA etc technical images, mostly PNG win JPG like 10-1.
These things is best you self study using example google and read.
But in other hand, everyone has the right to choose a religion, and it must be respected.
Of course if we use very high quality settings for JPG package result is quite good, also for this kind of images, but why we then use packing if file size is big when we can get still better quality with lot of smaller file size.
Do you think we want out from BMP just because file size. Best result is with PNG and difference is not even only marginal.
Here attacehed two images.
Exatly same. Same BMP converted ti PNG and JPG.
We've had some behind the scenes discussion as which formats might be offered and the likely phase in time over the product range. Word I have is that other image file formats will gradually be rolled out in subsequent versions of new FW. We hope for a good selection of formats that offer users the image file type that will suit them best.
We've had some behind the scenes discussion as which formats might be offered and the likely phase in time over the product range. Word I have is that other image file formats will gradually be rolled out in subsequent versions of new FW. We hope for a good selection of formats that offer users the image file type that will suit them best.
I don't think there's a need to offer some dozen of more or less obscure image format for a simple screenshot. Offering BMP, PNG AND JPG (maybe with some slamm tweaks to improve quality) is perfectly fine and already more than many other instruments offer.
We've had some behind the scenes discussion as which formats might be offered and the likely phase in time over the product range. Word I have is that other image file formats will gradually be rolled out in subsequent versions of new FW. We hope for a good selection of formats that offer users the image file type that will suit them best.
I don't think there's a need to offer some dozen of more or less obscure image format for a simple screenshot. Offering BMP, PNG AND JPG (maybe with some slamm tweaks to improve quality) is perfectly fine and already more than many other instruments offer.
Exactly what we've asked for.
I think they should focus R&D efforts more into the debugging and performance sectors, far more important for a SA than the picture format. How often except for really basic report did you even use screen shots at work?
I think they should focus R&D efforts more into the debugging and performance sectors, far more important for a SA than the picture format. How often except for really basic report did you even use screen shots at work?
I think they should focus R&D efforts more into the debugging and performance sectors, far more important for a SA than the picture format. How often except for really basic report did you even use screen shots at work?
Pretty much every day. It's the quickest way to document all kind of stuff.
I think normal waterfall, "Spectrum monitor" as it is named in SA GUI is included with Option: AMK-SSA3000X.QuoteAdvanced Measurements Kit (AMK-SSA3000X) – Includes automatic measurements for
– Channel Power
– Adjacent Channel Power Ratio
– Time Domain Power
– Occupied Bandwidth
– Includes Waterfall Display
Here waterfall image how my SSA3000X display it. It show level only with color.
(I can not test without this AMK-SSA3000X Option because permanent Option can not remove using SSA GUI)
This looks very different what PC software EasySpectrum image @Bicurico posted and it looks 3-d waterfall.
@Bicurico posted nice 3-d waterfall using PC software EasyWave (free)
My SSA3000X (FW 7.05, with Option: AMK-SSA3000X). Image from SSA display.
(note also image quality when used JPG or PNG where PNG wins like 10-1. I hope Siglent add this PNG and make it as default. Peoples can take selfies and scenery or what ever art pictures using JPG but this is not suitable for this kind of technical document images. If yoy zoom some details etc you can see what kind of pixel porridge JPG is coocking in details)
I have a question on the everyday use of the SSA3021X: when I start to play with Frequencies, Span, Amplitude, Sweep and Trace options, after some time everything gets slow. Even if I set the parameters back to reasonable values, the refresh rate is low. If I press the PRESET button, however, things speed up again.
That is not correct. JPEG can provide a similar image quality as PNG, but it depends on the parameters (i.e. quality level, compression factor) that are used for generating them. If the screenshots in JPG are inferior in quality to PNG shots then this isn't the fault of JPEG but of Siglent because they set the JPG parameters in their firmware to low quality.
Not at all if we look result file size.
Original TFT BMP is 1843254 bytes.
Perhaps need some lesson? PNG is a lossless compression format when JPG is lossy.
I have a question on the everyday use of the SSA3021X: when I start to play with Frequencies, Span, Amplitude, Sweep and Trace options, after some time everything gets slow. Even if I set the parameters back to reasonable values, the refresh rate is low. If I press the PRESET button, however, things speed up again.
I have never meet this exept in situations when I have changed some parameter what affect speed. I mean example if I have adjusted VBW, after adjusting it is manually forced until I change its mode back to auto. Now If I forget this and if I do some other things and then just example change span. Then I wonder why this is so slow. Until I realize that oops... VBW is narrow. There is many this kind of things what do not return back to auto where SSA set itself better value when user select some other parameter. Also then, example sweep mode, in some (most) cases sweep is slower that FFT. If you normally use in auto sweep mode and then you select manually sweep mode sweep. Then change freq, span etc it may work much slower than usually if in sweep mode auto where is select FFT or (default) speed optimize instead of accuracy.
Of course I have not tested all possible combinations (human life is not enough for all possible combinations), so it is still possible there is some situation where it live some process on what slows system. When find this, it is good to document exacxtly these kind of findings so that same can repeat example by other user or in Siglent.
One I know. If use AMK option "waterfall". When it start from empty waterfall image it is more fast. After it collect more and more data it goes slower, until there is full waterfall image, after then it run with this speed.
Also if turn on Demod and set demod time long then forget demod on and go to look some other things. But demod time still make "pause" between sweeps. (in this case there is AM or FM displayed in left side)
If there is example 500ms demod time and then you go to some other things and your sweep time is example 10s. You do not perhaps note this extra pause. But then you adjust BW and or span etc and you expect much more fast sweep. Then you wornder why 24ms sweep is so slow. It keep demod time pauses (and you are not using it but forget it on)
Needs a lot of experience before the device is so familiar with that note of all the factors that affect each other and how they interact with each other.
Know your device - it is always important.
Then, when you know or seriously suspect that something is really wrong, it is good to document it well. So well that the problem may be repeated anywhere at any time by other user and I'm sure Siglent want also check all documented problems carefully.
Isn’t it funny how the picture format for screenshot files has become a major topic here in a thread about a spectrum analyzer – quite obviously just because it looks like a good opportunity to bash Siglent once again.
But Siglent needs not give a thought about JPEG compression settings, since this is an SA and not a camera of any kind, hence it outputs technical graphs.
Isn’t it funny how the picture format for screenshot files has become a major topic here in a thread about a spectrum analyzer – quite obviously just because it looks like a good opportunity to bash Siglent once again.
Isn’t it funny how the picture format for screenshot files has become a major topic here in a thread about a spectrum analyzer – quite obviously just because it looks like a good opportunity to bash Siglent once again.
But Siglent needs not give a thought about JPEG compression settings, since this is an SA and not a camera of any kind, hence it outputs technical graphs.Siglent has a long history of getting the format for saving screenshots totally wrong. So yes, this is an issue!