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New 2ch pocket DSO+SG - Zeeweii DSO2512G

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Aldo22:

--- Quote from: Sham73 on April 26, 2024, 08:19:59 am ---1) What does “RTAuto” mean in the upper right corner of the screen, which appears when you long press the Auto button.

--- End quote ---
I don't have this on my older FW version.
I assume it means "real time auto".
So it does "auto" whenever the signal changes without you pressing the button. Just a guess.
Try if the scales change automatically with different frequencies or amplitudes.


--- Quote from: Sham73 on April 26, 2024, 08:19:59 am ---P.S. I wanted to send images of my board and "RTAuto", but I couldn't. How can I send an image here when replying to a post?

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-> Attachments and other options

Sham73:

--- Quote from: Aldo22 on April 26, 2024, 09:11:10 am ---I don't have this on my older FW version.
I assume it means "real time auto".
So it does "auto" whenever the signal changes without you pressing the button. Just a guess.
Try if the scales change automatically with different frequencies or amplitudes.
--- End quote ---
Thanks, I will try..


--- Quote from: Sham73 on April 26, 2024, 08:19:59 am ---I had a couple of questions:
--- End quote ---
2) I have 2 video capture adapters.  One of them is working, the other is not. It turns on when you twist or press the board in a certain way, but not always. Upon careful examination, I did not find any contact failure on the board.  Therefore, I want to compare both adapters on an oscilloscope. I want to ask: can I simultaneously check both adapters with both probes, connecting each of them to its own minus, or is this not possible?

wasedadoc:

--- Quote from: Aldo22 on April 26, 2024, 09:11:10 am ---
--- Quote from: Sham73 on April 26, 2024, 08:19:59 am ---1) What does “RTAuto” mean in the upper right corner of the screen, which appears when you long press the Auto button.

--- End quote ---
I don't have this on my older FW version.
I assume it means "real time auto".
So it does "auto" whenever the signal changes without you pressing the button. Just a guess.

--- End quote ---
That guess is correct.

Aldo22:

--- Quote from: Sham73 on April 26, 2024, 09:58:23 am ---I want to ask: can I simultaneously check both adapters with both probes, connecting each of them to its own minus, or is this not possible?

--- End quote ---

I don't know exactly what you mean.
The Zeeweii itself is not grounded (earth) when it runs on battery, but of course the two BNC grounds (minus) are connected in the oscilloscope.
Maybe someone else can help.

pcprogrammer:

--- Quote from: Sham73 on April 26, 2024, 09:58:23 am ---2) I have 2 video capture adapters.  One of them is working, the other is not. It turns on when you twist or press the board in a certain way, but not always. Upon careful examination, I did not find any contact failure on the board.  Therefore, I want to compare both adapters on an oscilloscope. I want to ask: can I simultaneously check both adapters with both probes, connecting each of them to its own minus, or is this not possible?

--- End quote ---

As long as the 2 video capture adapters share a common ground you will be fine, but make sure the ground of the probes are connected to the same ground potential.

Are these video capture adapters USB devices? If so it is best to connect then to the same computer for performing these tests. Then the ground potentials will be more or less the same.  Connecting the probe grounds to the separate devices will cause ground loops and this might lead to incorrect measurements, but the scope you are using is not the most accurate either.  >:D

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