Excellent video, thanks for posting this! Love the practical review and application of the FFT functionality of this (or any) scope. Would love to see the techniques you show here put to real life practice repairing a tube amp or similar. Will look through other videos on your channel - this may already be there and I just haven't found it yet. Anyway, thanks!

Thanks for the video. My interests are also audio amplifiers, so this is really helpful.

Just bought this scope and received it yesterday, I've been poking around with the PWM pins in Arduino and some 555 oscillator circuits.

Nice video and very helpful!!! Thanks!

The guitar amp tone stack is passive so it's very interactive. If you drop the mid-range all the way down you should get a much better reading on the Bass response. Nice video

can i use the trig out jack on the back of the scope to connect to a frequency counter?

The reason the spectrum changed when you adjusted time/div I believe is the cycles it shows on screen are the number of cycles it samples, so more is better-more detailed.

The greater the number of points in the sample, the greater the precision of the signal in the frequency domain. That is why the FFT aspect changes when you adjust the number of points in the sample.

Hello. Can you do peak detection in fft to move betweeb harmonics in that siglent scope? Thanks!

Thanks for info.

you can also make it less laggy / delayed by lowering the acquisition memory, otherwise it has to run trough all 7 or 14 million measurements every frame

Sowould you recommend this scope over the Rigol for audio repair and restoration? Thanks

I got a question that I couldn't found on the net. What is the max frequency you can measure with the fft option of this scope? Thanks

Another interesting use, is analyse the tapping of say a wine glass, then play that same frequency back through a high power amp to try and explde the glass, I believe you might have to resonate it first, then shift the phase, thats my theory anyway.

how do you set fft points

Is anyone familiar with defective units with BA in the serial number?

how noise signal on screen delay

Hi, quick question, do you prefer this over a Rigol 1054Z? If so, why? Thanks!

It seems to me that the FFT demo for these audio frequency ranges was completely unlike what one would expect. You would think that cranking the bass or treble control would’ve been immediately reflected in the white noise demo as a quite obvious shelf within the FFT plot, but this totally was not the case. There were must be some underlying reason why the FFT was fairly worthless when used in this way, it is unfortunate that was not determined in this demo. The demo as shown kind of shows that using the FFT at these frequency ranges is useless, no?

Very good video❤, 🇧🇷😉👏👏👏👏

Since you have a Siglent function gen, isn't there a way to make Bode plots with your scope?

What is the difference between sds1202x-e and sds1202x? What is new about the"e"?

I don't like how the fft display is so small on this scope

For audio distortion measurement I take a USB Sound interface and the software REW. There you get THD directly on the screen. Much better my Rigol scope can do.

I've found it to be impossible to set FFT for audio frequencies (DC-40kHz) if You want to get any readable information. It is quite pity as device is very powerful and could partly replace very expensive audio analyzers for measuring freq response, THD and noise, but resolution is simply to low at that (low) range. I'm hoping for a new firmware with refactored FFT: 1. Range setting instead of center freq. 2. Logarithmic horizontal scale. 3. FFT for the difference between CH1 and CH2 (to measure balanced line signal with canceled line noise). This would make SDS1202X-E simply the best device on the market for audio engineers. Also I agree with Rob - turning Horizontal resolution knob should not affect what You see on FFT. I can see the point they did this from development perspective, but it absolutely does not make sense for the user.

Around the 5:00 mark when you’re showing the FFT of the sine wave, Next time try it with a Hanning or a Blackman data window setting. (not sure what the scope options are) The window setting used in the video was “rectangular”. This is not ideal for the specific signal you were looking at. This would have reduced the spectral “spread” of energy coming down from the peaks (looks like a tent pole poking up thru a fabric roof) and made the discernment between fundamental and harmonics more apparent, as well as showed the noise floor of the scope (or DUT, but probably the scope)

bro add tutorial

LOL, whats the power rating of that massive green resistor? looks like it could shunt a substation! )

The repeated pauses as it's doing the maths does my head in. Needs a faster refresh.

Did you forget to set your frequency scale to log?

pity you didn't rxplain how you connected your probe to the amp - I'm a noobie atapplied electronics thou I had some theory class

You don't need to set Hz/div. even to 1kHz for guitar amp. - all magic is happening in between about 60 and 1000 Hz, and because 880Hz is already fifth fret of 1st string and guitar amp frequency response should not be any wider than few KHz. So, you will get much better information if you set Hz/div to something like 250-500, in this case screen will give you information from 0 to 2.5-5KHz, this is enough. P.S I am lucky owner of SDS1202X-E :)

🇧🇷😉👍 subscribed

The noise floor of a general purpose oscilloscope FFT is too high for any audio analysis. You want a proper audio analyzer equipment, or at least a decent sound card or USB audio interface with low enough residual THD and high dynamic range, so you can capture what your amplifier is doing. I find the cheapest is to use a sound card with RightMark audio analyzer software.

Even tempting idea of using this one for audio analysis please do not forget (and that goes for most DSO's in that price range and even more expensive ones) that it only employs an 8-bit ADC. That together with a typical 3-4% level accuracy does not give you much choice in serious audio work. Good for quick check. Figure that an 8-bit ADC is only able to resolve 4096 different amplitude levels which is really not very much. At least a 12-bit or 16-bit ADC would be required to take it to another level. Plus you'd really need at least 0.1% level accuracy. You're then hitting some serious price issues. However for quick checking can be done. Nonetheless I like that Siglent SDS 1000X-E series. For other reasons though (Decoding, long memory etc....)

Why is the FFT refresh rate so slow ? It is worthless for any realtime signal.

incoherent unclear story