Products > Test Equipment
Hacking the HDO1k/HDO4k Rigol 12 bit scope
TurboTom:
--- Quote from: RFDx on December 27, 2023, 02:46:56 am ---
--- Quote from: TurboTom on December 03, 2023, 09:56:21 pm ---Most "fellas" interested in Rigol's DHO 800/900/1k/4k may have followed the other thread about the broken FlatTop FFT window function. I wrote a small basic (yes, really! ;) ) program that calculates the correct window file -- the windows executable is attached.
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Thank you very much, works now as it should. Is the repair of the flattop window function to be done every time there is a new firmware update?
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Yes, I'm afraid it is -- unless Rigol adopts the fixed window function file (or generate their own) in their firmware update package. But it will be the same situation with advanced hacks that several members are working on, once they become available -- only that there will be zero chance for Rigol "adopting" them ;D.
DigitalDeath:
--- Quote from: TurboTom on December 26, 2023, 10:25:17 am ---Yes, that's the way it always starts... But if you know that there's still more functions hidden in the box, you start to reconsider ;D ...
- 50 Ohm inputs
- Possibly single channel 800MHz BW
- 200/250MSa of memory
- Power Analysis
- additional decoders MIL-STD 1533, FlexRay (those are least relevant since if you're in that business, you simply buy the "real thing" and probably not even from Rigol ;))
I don't know why, must be in the "hunter gatherer genes" that it makes one feel good to get the optimum from one's tools/toys, regardless if necessary for the "job" or not. 8)
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Sorry if this has been discussed before but do you mean I can activate the 4K functions in the 1K scope?
Antonio90:
Yes, with caveats. You can change the vendor.bin to make the 1000 think it's a 4000. It doesn't work properly that way, as the 4000 uses 2 ADCs interleaved, and it messes the acquisition.
However, the rest of the hardware is identical, and it seems like the firmware could be modified to add the 4000 functionality in TurboTom's post, which doesn't need additional hardware.
Hence the (unlikely IMO) 800MHz on one channel, and the 200/250 MPts, as the full 500 requires two ADCs. Power analysis should be the easiest option, and the memory and 50Ohm the most useful I guess.
ebastler:
--- Quote from: DigitalDeath on December 27, 2023, 10:46:12 am ---Sorry if this has been discussed before but do you mean I can activate the 4K functions in the 1K scope?
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The approach Antonio90 describes has been tried, but has massive side effects. Among other things, it disables two of the four channels, since the second ADC is missing in the DHO1000 models.
There is a better approach: Patching the Auklet Android app in those places where it checks which functionality should be available or restricted, based on the current scope model. This is still work in progress. Just read the most recent two or three pages of this thread, especially the posts by zrq, Dennis Frie and bosav, to come up to speed.
Finger crossed that this method will be fully worked out! The 50 Ohm inputs and 400 MHz bandwidth would be my favorite features. One nice feature of the DHO4000 is that it lets the user switch between three bandwidth settings: 20 MHz, 200 MHz and full. So one could use 200 MHz bandwidth in four-channel mode, and 400 MHz with two channels.
Antonio90:
It seems quite plausible. 400MHz, 50 Ohm, power analysis and 200MPts for 720€ (incl VAT) is an incredible bargain. Maybe the bandwith is the least likely? I really don't know.
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