Products > Test Equipment

Measuring Distortions with the Scope:What you see is not what you really have..

<< < (15/35) > >>

Martin72:
As I said, I should rename the thread..
But nice work, tomorrow when the XLR plugs arrived I´ll follow with the neutrik A1.
And the scope FFT pictures are nearly same looking... :P

tautech:

--- Quote from: Martin72 on December 29, 2022, 10:41:35 pm ---As I said, I should rename the thread..

--- End quote ---
You can, just go back to the OP and do it there with a Modify.
The topic URL remains the same and we will all see new posts flags and/or get notifications if we are setup for them.

Martin72:
I know that, but I have no idea yet what the new title might be.
Currently, two threads are "hijacked" by the FFT thing..

rf-loop:

--- Quote from: Martin72 on December 29, 2022, 11:51:09 pm ---I know that, but I have no idea yet what the new title might be.
Currently, two threads are "hijacked" by the FFT thing..

--- End quote ---

Least one reason is here:

--- Quote from: Martin72 on December 26, 2022, 08:22:32 pm ---Back to topic, comparison...

FFT of SDG1062X and 2122X, sinewave 1khz, appx 0dBm @50Ohm:
[  images ]

--- End quote ---

I think it was very important to handle this FFT thing because this kind of instruments FFT is wrong tool for evaluating these said generators signal quality by measuring, for example, THD and comparing them.
The result is almost garbage.
Which has now been proven in this context as well.

Performa01:

--- Quote from: mawyatt on December 29, 2022, 07:50:32 pm ---Agree, the resistive combiner should produce the best overall IMD from the signal various sources. However, these AWGs under discussion have a built-in combiner, whether it's digital or analog don't know, but produces a Two Tone Signal without any additional components or cables, just one cable, and produces very respectable results (better than we expected) as shown by the various previous plots.

--- End quote ---

The question about the combining method has been dealt with multiple times already, see for example reply #159 here:

https://www.eevblog.com/forum/testgear/two-tone-test-with-scope-and-sa/msg4250476/#msg4250476

I am amazed about your stellar results. Maybe Siglent have been able to achieve some improvement for this function since the last time I've checked it...

Navigation

[0] Message Index

[#] Next page

[*] Previous page

There was an error while thanking
Thanking...
Go to full version
Powered by SMFPacks Advanced Attachments Uploader Mod