Products > Test Equipment
Upgrading the Hantek DSO4072C and DS4104C oscilloscopes bandwidth up to 250MHz
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Simon_RL:

--- Quote from: kutukvpavel on April 04, 2020, 10:57:37 pm ---To Simon:
The ultimate backup is a collections of images of all ROMs the device contains, made with (a) suitable programmer(s). In case anything goes wrong you reflash the ROMs and the scope is again factory-new. However, this is really inconvenient ([de]soldering) and mostly unnecessary (current firmware doesn't seem to counteract any sort of tampering). So, an average backup is just an image of the flash-rom that contains the firmware (made using UART connection to a running scope).
I don't think you should be worried that much if you are familiar with C/C++ programming (it's fairly low-level compared to .NET environment, for example, where I departed from some time ago, having to learn C/C++ and various embedded stuff simultaneously).
Check out the backup method link in the first post.

Btw, there is a longer thread on Hantek DSO5000 series hack: https://www.eevblog.com/forum/testgear/hantek-tekway-dso-hack-get-200mhz-bw-for-free
You may find backup how-to-s there too. Adjusting them to suit this model should be bot that hard, after all it's just a Linux distro and a flash chip that may differ.
Just in case, AFAIR, the OP is chinese-speaking guy who delivers information from chinese community here (you'd be surprised how much stuff you can find in the chinese segment if the Net, many of chinese developers of such devices actually share source codes etc). He briefly mentioned that DSO4004 series is completely different in terms of software, but if he's still around he would probably be able to help. Especially with firmware mods.

To All:
I'm about to get a DSO4084-series scope to hack it to 250MHz. Does anyone have any recent hacking experience with those? Do I still have to change a single text file only? Has anyone tested actual rise time before/after the hack? AFAIR, chinese manufacturers made some attempts to prevent hacking (at least make it more complicated) for 5000-series scopes at some point in time, therefore I'm a bit worried.

--- End quote ---

Hi kutukvpavel,
Thank you very much for taking the time to provide this information, it is very helpful. My questions were in relation to hacking the HDG6082B and creating a backup and restore for this AWG. I am still waiting for my USB to UART adapter and was my post is part of my preliminary as there is no info around on hacking the HDG6082. Although I have found a thread on hacking the HDG2XXX, I am hoping I can apply the same steps to my AWG.
Microcheap:

--- Quote from: Simon_RL on April 03, 2020, 01:40:40 pm ---I am planning to read out the eprom as per Microcheaps instructions and will share all findings and results in this thread.

--- End quote ---

I don't recall I needed reading the eeprom of the oscilloscope to be able to change it's BW, I think it was another user who tried this approach. Anyway, I don't think you need that to get the maximum bw of your function generator, if Hantek still doing things the same way, all you will need is to simple change some parameter in a text file.

To avoid any problems, just make a copy of the file before you change it (oh! and don't forget to backup the cal data as well). In the thread about the HDG2000 you can find a script (NANDDump) to copy the flash partitions of the device, you can try that with the HDG6000 and see if it works.

By the way, if you are interested, you could start a new thread for this new Hantek's HDG6000, I saw it on their web site, the specs looks good, not that I need another function generator but, I am curious to see how the firmware performs and what changes they made to the HW comparing to the HDG2000.


--- Quote from: kutukvpavel on April 04, 2020, 10:57:37 pm ---To All:
I'm about to get a DSO4084-series scope to hack it to 250MHz. Does anyone have any recent hacking experience with those? Do I still have to change a single text file only? Has anyone tested actual rise time before/after the hack? AFAIR, chinese manufacturers made some attempts to prevent hacking (at least make it more complicated) for 5000-series scopes at some point in time, therefore I'm a bit worried.

--- End quote ---

I don't have access to this scope anymore, but I believe it still works just fine, I don't think Hantek will ever bother to change that. Regarding the rise time, I did a quick and dirt measurement and posted it a few messages above, the change is clear.
Simon_RL:

--- Quote from: Microcheap on April 05, 2020, 07:16:17 pm ---
--- Quote from: Simon_RL on April 03, 2020, 01:40:40 pm ---I am planning to read out the eprom as per Microcheaps instructions and will share all findings and results in this thread.

--- End quote ---

I don't recall I needed reading the eeprom of the oscilloscope to be able to change it's BW, I think it was another user who tried this approach. Anyway, I don't think you need that to get the maximum bw of your function generator, if Hantek still doing things the same way, all you will need is to simple change some parameter in a text file.

To avoid any problems, just make a copy of the file before you change it (oh! and don't forget to backup the cal data as well). In the thread about the HDG2000 you can find a script (NANDDump) to copy the flash partitions of the device, you can try that with the HDG6000 and see if it works.

By the way, if you are interested, you could start a new thread for this new Hantek's HDG6000, I saw it on their web site, the specs looks good, not that I need another function generator but, I am curious to see how the firmware performs and what changes they made to the HW comparing to the HDG2000.

--- End quote ---

Thanks Microcheap, no it wasn’t you that read out the eeprom it was TequilaTom. I will start a new thread for the HDG6000, I really was trying to avoid hijacking this thread and just get some pointers.
Microcheap:
No worries, you are not hijacking the thread, your questions fits here perfectly, if you check how the others Hantek's devices are "hacked" you'll find that it's always the same approach.

I suggested a thread about the HDG6000 just because it would be easier for someone looking for more information about this awg and I'm curious, I saw this function generator on Hantek's website but I can't find anything about it elsewhere.
I already have a HDG2002 "upgraded" and I really don't need another AWG but would be nice to compare it to the new model.
Simon_RL:

--- Quote from: Microcheap on April 07, 2020, 05:07:14 am ---No worries, you are not hijacking the thread, your questions fits here perfectly,

I suggested a thread about the HDG6000 just because it would make easier for someone looking for more information about it and I'm just curious, I saw this function generator on Hantek's website but I can't find anything about it elsewhere.

--- End quote ---
Thanks Microcheap.

My biggest concern was lack of backup and restore. I had assumed that the backup and restore files were executable binaries and not scripts. Once I get my USB to UART adapter I will edit the scripts to suit the HDG6XXX (if editing required) and share them in a seperate thread, along with photos of the internals.

The HDG6XXX had a lot more features than I expected for the price and I am very happy with it. Although the manual while being very long is not the best and read more like marketing guff than providing instructions on how to actually use certain features.
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