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Hacking the HDO1k/HDO4k Rigol 12 bit scope

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skander36:

--- Quote from: sizziff on May 08, 2024, 02:13:27 pm ---... In the case of 4804, the 400 MHz band of the input path is unlocked and this is cool, although there are problems with the readings, but the time just needs to be multiplied by 2, and the frequency divided by two. ...

--- End quote ---

Why 400 and not 800?
Did you measured?

Lochstreifen:

--- Quote from: sizziff on May 08, 2024, 02:13:27 pm ---I tried to put "DHO2000 vendorl.bin." (2404 and something like that) and the oscilloscope loaded and worked, but I did not find any profit. In the case of 4804, the 400 MHz band of the input path is unlocked and this is cool, although there are problems with the readings, but the time just needs to be multiplied by 2, and the frequency divided by two. It's a pity there is no working patch to unlock the bandwidth to 400MHz for the DHO1000...

--- End quote ---

What happens when you enable CH3? This may limit CH1 to 2GS and one ADC. (If this works at all with your 2 channel hardware.)

sizziff:

--- Quote from: skander36 on May 08, 2024, 02:52:12 pm ---
--- Quote from: sizziff on May 08, 2024, 02:13:27 pm ---... In the case of 4804, the 400 MHz band of the input path is unlocked and this is cool, although there are problems with the readings, but the time just needs to be multiplied by 2, and the frequency divided by two. ...

--- End quote ---

Why 400 and not 800?
Did you measured?

--- End quote ---

You are probably right, the 800 MHz band
If we can trust the TinySA Ultra, ~43mVp-p is definitely more than 50mVp-p at the 0.7 level
(-22dBm = 50mVp-p)

sizziff:

--- Quote from: Lochstreifen on May 09, 2024, 07:54:03 am ---
--- Quote from: sizziff on May 08, 2024, 02:13:27 pm ---I tried to put "DHO2000 vendorl.bin." (2404 and something like that) and the oscilloscope loaded and worked, but I did not find any profit. In the case of 4804, the 400 MHz band of the input path is unlocked and this is cool, although there are problems with the readings, but the time just needs to be multiplied by 2, and the frequency divided by two. It's a pity there is no working patch to unlock the bandwidth to 400MHz for the DHO1000...

--- End quote ---

What happens when you enable CH3? This may limit CH1 to 2GS and one ADC. (If this works at all with your 2 channel hardware.)

--- End quote ---

When activating any channel except CH1, the oscilloscope definitely does not work correctly. And judging by the shape of the signal, 2 Gs are reduced to 1Gs
And if I activate only CH3, the oscilloscope shows 2Gs (Really 1Gs) but the signal is not displayed. In order to receive a signal on the second channel, it is necessary to activate both CH2 and CH3, the oscilloscope shows 1Gs (actually works as 500Ms)

bharathraj199:
Folks,

I purchased a new DSO (DHO1074). I see the thread to be too lengthy to exactly find the steps to upgrade the bandwidth and memory depth.

Can someone please provide the most reliable procedure to be followed to unlock my scope?

Thanks!!

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