Products > Test Equipment
Sub: Rigol's DHO800 Oscilloscope (Gibbs Effect & Aliasing Misunderstanding)
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Martin72:
Hi,

Just made a few pictures...
Martin72:
Here again a comparison between the original 70Mhz version and now, the "unleashed" version, which has 200Mhz bandwidth (although you can only hack on 100Mhz and only 100Mhz are displayed, maybe the reason why after the last firmware update the bandwidth option is no longer displayed).
Fungus:

--- Quote from: Martin72 on November 07, 2023, 06:56:51 pm ---Here again a comparison between the original 70Mhz version and now, the "unleashed" version, which has 200Mhz bandwidth (although you can only hack on 100Mhz and only 100Mhz are displayed, maybe the reason why after the last firmware update the bandwidth option is no longer displayed).

--- End quote ---

As noted earlier: The "70MHz" version of the DHO800 has 125MHz measured bandwidth. :)

I think Rigol's marketing department is under-labelling the DHO800 to fool people into buying the DHO900.

(Which makes perfect sense - they probably make 3x profit in return for a $1 edge connector!)
Martin72:
Just for fun, bodnarpulse on a lecroy WR9054, 500Mhz, 20GSa/s.
iMo:

--- Quote from: Martin72 on November 07, 2023, 06:48:46 pm ---Hi,
Just made a few pictures...

--- End quote ---

You may see with 3ns/point (312.5Msa/s) the sinc function tries to interpolate the points such the "sinc waves" periods fit that 3ns between the points..
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