Products > Test Equipment

SDS800X HD Actual Use Cases

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mawyatt:
Here's a few uses with the Bode plot showing filters.

These are interesting RC filters that exhibit a "greater than unity gain" yet have no inductors, nor transformers, transmission lines, switches, non-linear elements, or active devices, just a couple resistors and a couple capacitors.

One is a Low Pass and the other a High Pass, and both show ~0.66dBV gain. Probably not much use but interesting anyway, analysis left up to the reader :-+

Included some LTspice Sims for reference.

BTW a single JFET also exhibits a Passive Voltage Gain without any additional components, nor power supply!!

Gotta love this little SDS800, puts a grin on our face every time we use it :)

Will add more later if folks are interested.

Best

joeqsmith:
I wonder if you can't make PDN measurements with it?   I tried using the NanoVNA and get ok-ish results.  Do they support anything like this native?

mawyatt:
Would expect so, as it's already been shown how to make Impedance and Admittance measurements utilizing the Bode Function.

One could use a current probe for the current measurement for V/I or I/V plots, but also a simple small sense resistor works. The 12 bit resolution, low noise, and large dynamic range (range scaling) come into play here.

If Siglent makes a firmware update that allows the math channels to be part of the Bode Function, then this opens up a lot for direct use cases without need for additional support probes/components/equipment.

As we noted on numerous occasions, contrary to some naysayers, this Bode Function is extremely useful in the hands of knowledgable users :-+

Best,

KungFuJosh:

--- Quote from: mawyatt on May 03, 2024, 03:47:36 pm ---this Bode Function is extremely useful in the hands of knowledgable users :-+

--- End quote ---

...and me too. 😉

mawyatt:
Here's a couple plots of the classic passive Twin T Filter, just a few resistors and capacitors for a ~47dB notch :-+

Fun stuff indeed  :)

Best,

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