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Analog Discovery 3 or budget bench setup

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egonotto:

--- Quote from: RoGeorge on June 19, 2024, 06:43:00 pm ---For a Gilbert cell, a phone charger (or just a USB cable) can be the power supply, and a sound card can be the dual channel generator.  Then the oscilloscope can be used to visualize the signals.

--- End quote ---

Hello,

Good. But next he wants to check the frequency response of an AD620. For this he needs a dual power supply and a higher frequency than a sound card delivers. No problem with an AD.

Best regards
egonotto

RoGeorge:
Minimum power supply for AD620 is ±2.3 V
https://www.analog.com/media/en/technical-documentation/data-sheets/AD620.pdf

Take 4xAA batteries to get +/-V, or pull out the phone battery and add it in series with the USB charger to make a +5/-4V supply, then use the oscilloscope's generator to display the frequency response (the oscilloscope has an internal generator, and can display Bode plots):


Bode plot from https://www.eevblog.com/forum/testgear/sds800x-hd-review-demonstration-thread/msg5335361/#msg5335361

 :)

Antonio90:
The SDS800X-HD doesn't have an internal generator. You can control Siglent brand AWGs or buy the usb generator. There is a python script to control AWGs from a different brand, but it's still an additional expense.
Internal generators on Siglent oscilloscopes begin with the 2000 series, which start at the price of a full basic lab.

egonotto:

--- Quote from: RoGeorge on June 19, 2024, 08:45:15 pm ---Minimum power supply for AD620 is ±2.3 V
https://www.analog.com/media/en/technical-documentation/data-sheets/AD620.pdf

Take 4xAA batteries to get +/-V, or pull out the phone battery and add it in series with the USB charger to make a +5/-4V supply, then use the oscilloscope's generator to display the frequency response (the oscilloscope has an internal generator, and can display Bode plots):


 :)

--- End quote ---

Hello,

the SDS804X HD does not have a built-in generator. You have to buy one separately. It costs more than half the price of an AD3 Akademisch.
What I'm getting at is that the AD is just a complete little easy-to-use lab. You can do everything differently, but it costs extra effort and extra money.
The next application I could mention is the Curve Tracer. Or Data Logger or Logic Analyzer or Pattern Generator or Impedance Analyzer.

Best regards
egonotto

RoGeorge:

--- Quote from: egonotto on June 19, 2024, 09:28:54 pm ---the SDS804X HD does not have a built-in generator

--- End quote ---

The generator exists, just that it is software-locked, but there are unlocks:
https://www.eevblog.com/forum/testgear/siglent-sds804x-hd-same-upgrade-scripts/

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