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DMMCheck Plus Multimeter Reference(and other References) - Experiences..

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bdunham7:

--- Quote from: alm on July 11, 2023, 08:47:32 pm ---
--- Quote from: Martin72 on July 11, 2023, 08:14:00 pm ---At the moment my SDS2504HD measure the same signal - without "deforming"...
Must investigate this.

--- End quote ---
The SDS1104X-E was not set to AC coupling, was it?

--- End quote ---

I think this is a known issue with the scope at low frequencies.

Here's 100Hz 10Vp-p from SDG2042X direct to SDS 1104X-E with settings as shown.

Domitronic:

--- Quote from: bdunham7 on July 11, 2023, 09:01:57 pm ---
I think this is a known issue with the scope at low frequencies.


--- End quote ---

Yes, at least my SDS1104X-E has the same issue:

https://www.eevblog.com/forum/testgear/siglent-sds1204x-e-released-for-domestic-markets-in-china/msg4433131/#msg4433131

Others reported the same in this thread.

Martin72:
Yepp, it must be an issue - connect the signal directly without a probe to the scope, no changes.
Hmm..Not so nice for SDS1104X-E owner.

Veteran68:

--- Quote from: Fungus on July 10, 2023, 03:03:08 am ---
--- Quote from: Veteran68 on July 10, 2023, 02:45:00 am ---I'm shocked, SHOCKED!, I tell you!  :D

I knew when I got it that there was no way they were typing up, printing, and cutting out each of these for each unit. The handwritten ones are much more believable.

--- End quote ---

The date on it should be a giveaway. When did you buy yours?

--- End quote ---
Had to search email history to figure out where and when I bought it.

EBay, Feb 2020. So yeah it came with 5yo cal sheet from some other device (if not entirely made up numbers to begin with).

I had bought a few different varieties of these cheap ones, like the other ones pictured in this thread, but this one was an odd duck with its battery requirement so after I was done playing with it, it went into a drawer and was never used again.

Since then I bought a LB02A process calibrator which is handier and more fun to use, and is really all the reference I need for my hobby purposes.

Martin72:
Now the SDS2504X-HD...
You musn“t buy this to get the nice histograms, you could have them with a unlikely more cheaper SDS2000X-Plus.
But the accourate DVM, you get it only with the 12bit model.

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