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EEVblog 1510 - $699 Rigol 12bit HDO1000 Teardown - WOAH

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EEVblog:
HUGE SURPRISE inside the new low end $699 Rigol 12bit low noise HDO1000 oscilloscope!

Discuss any hacking HERE: https://www.eevblog.com/forum/testgear/hacking-the-hdo1khdo4k-rigol-12-bit-scope/

BrianHG:
@12:25, there is a big movement and some component layout changes in all of the front-ends passive SMD parts, to the top right of the IC.  Actually on closer inspection @9:10, it looks like there might have been drop in quality of the layout when trying to maintain high frequency performance.

Maybe the HDO1000 was designed first and some improvement was needed for the HDO4000.

I don't think you can get the same bandwidth with this change in the front-end, but they look dead close.

Also @9:10, to the right of the bottom relay, the largest resistor shown, the HDO4000 uses a 2202r resistor while the HDO1000 uses a 2501r resistor.

Kleinstein:
Deleting the 50 ohms option for the hobby range may be a point to reduce warranty claims.  The 50 ohms input does not look very robust and likely can relatively easy get damaged by a not so careful beginner.

It could have been a last minute decision and the lable could this still be off.

The extra costs for populating the 50 ohm option is not that high (mainly the relay). Not having it may effect parasitic capacitance and thus may have a negative effect on the normal input.

rs20:
It seems Rigol are a bit confused whether these scopes are called "DHOxxxx" or "HDOxxxx". In fact, I am 55% confident these will ultimately be called DHOxxxx once the dust settles. For example, compare these two product images:

* https://int.rigol.com/Images/HDO4804_tcm7-5225.png
* https://www.rigolna.com/images/products/DHO4000.jpg
Unless they're actually delivering a different product to the US and the rest of the world, but I seriously doubt that.

EEVblog:

--- Quote from: rs20 on January 22, 2023, 02:37:12 am ---It seems Rigol are a bit confused whether these scopes are called "DHOxxxx" or "HDOxxxx". In fact, I am 55% confident these will ultimately be called DHOxxxx once the dust settles. For example, compare these two product images:

* https://int.rigol.com/Images/HDO4804_tcm7-5225.png
* https://www.rigolna.com/images/products/DHO4000.jpgUnless they're actually delivering a different product to the US and the rest of the world, but I seriously doubt that.

--- End quote ---

Nice catch.
Seems unlikely to be a marketing department render error?  :-//

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