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Hacking the HDO1k/HDO4k Rigol 12 bit scope

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tonywood:
Seeing that the HDO1074 can be had for $548 online. Looks like we now have three low cost 12bit options. The DHO804 and now Siglent SDS804X HD. Great times for digital scopes!

Veteran68:

--- Quote from: tonywood on March 07, 2024, 04:32:56 pm ---Seeing that the HDO1074 can be had for $548 online.

--- End quote ---

Curious where you're seeing the 1074 now for $548. The 1074 was available for $599 during Black Friday and through December. Some speculated they would be slashing prices more permanently once Siglent's competing 12-bit scopes landed, but all I see right now is a $100 reduction to $899 at RigolNA and every online dealer that just popped up.

The 1072 lists for $599 right now, are you sure that's not the one you're seeing?

tonywood:
You're right, it was at ValueTronics for 609.14 and they had a 10% off coupon. Looks like it's back to 899 now.

sizziff:
Hi everyone
My experiments with vendor.bin (1072 operating in 4804 mode) show that 1072 displays a signal up to 800 MHz, but all measurements are overestimated by two times.
It turns out that the bandwidth limitation is softwired, and physically the DHO1000 bandwidth is much wider than 200 MHz.

I read the entire thread, but I still didn't understand if there is any way to expand the DHO1000 to 400 MHz?

zrq:
I don't have a perfect solution (still no time to look in to the 50Ohm gain problem),  but this accounts for what I did: https://www.eevblog.com/forum/testgear/hacking-the-hdo1khdo4k-rigol-12-bit-scope/msg5247882/#msg5247882

I have confirmed the hackable bandwidth for a HDO1074 is indeed more than 500 MHz.

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