Hacking the Rigol DHO800/900 Scope

[S2084]

I will do this in my video, it will show the state of the RAM before installing DDR3 chips, and after...

[Aleksandr]

The fact is that the RAM chip in question is connected to the FPGA, and not to the Android processor. And for this reason, the configuration about the presence and addressing of memory is stored in the configuration flash. Android OS has nothing to do with it. I managed to find an analogue RAM DDR. And I can install it on the station, but I need a flash dump that is connected to the FPGA from the older version DHO900 series. I bought DHO804.

[Aleksandr]

Need a flash chip dump from the series DHO900. And it seems to me that RAM is best suited in terms of parameters and characteristics MT41K256M16LY-093. Or I could be wrong.

[S2084]

I think there is no need for a dump, and it is enough to do a DDR calibration...

[Aleksandr]

Maybe. You need to check all options.

[S2084]

more useful information.  Currently, without additional RAM installed, when LA is activated, the maximum available memory depth for analog channels is halved.

[Mechatrommer]

In any case, I will install additional memory, I assume that next week the two SKhynix H5TQ2G63FFR memory chips I ordered will arrive to me, they will be immediately installed on the board.  I will show the entire installation process with all the checks and measurements of all voltages and signals on the installed chips in a video on my YouTube channel https://youtube.com/@stepan.koshman

be prepared with good reflow tool as i tried reflowing only MPM3630 smps ic with heat gun is not making a dent on solder blobs on pcb. i assume it has massive thermal mass underneath there... btw: my prototype pcb arrived and i just cut them last night. i need to perfect my reflow process using oven since vssop is not really easy to do by hand. and i'm quite busy with other things atm, so weekend is my hope for the next few weeks. ymmv.

[S2084]

Thank you!  Taking this opportunity, I would like to ask if there is any success in your generator board project?

[Mechatrommer]

Thank you!  Taking this opportunity, I would like to ask if there is any success in your generator board project?

as you can see in the picture above, i've not populate them, they just arrived. rev1 last time i got crosstalk issue in low level signal, so hopefully it will not occur in this rev2 (i dont know where the crosstalk came from, probably counterfeit ICs? or EMI from adjacent DHO800 motherboard? i dont know but the later is unlikely imho)

[Aleksandr]

 

[MalikovVV]

I updated my DHO812 to version 00.01.02.00.02 - a decoder and a CAN trigger appeared, but in the additional AUTO options the trigger is marked as limited

[roger66]

I'm having trouble getting RigolTool working.
At first Norton 360 flagged it as a virus, but I submitted the file for review at Norton and it will now unzip.
But If I start the app, the initial screen appears, then shuts down after 2 seconds.
I tried running as admin, also turning off Norton.
I am using Windows 10.
Not interested in hacking  my scope...yet,
but I'd like to download waveform files over wifi.
I'm using adb commands, but its a pain.

[Randy222]

In any case, I will install additional memory, I assume that next week the two SKhynix H5TQ2G63FFR memory chips I ordered will arrive to me, they will be immediately installed on the board.  I will show the entire installation process with all the checks and measurements of all voltages and signals on the installed chips in a video on my YouTube channel https://youtube.com/@stepan.koshman

be prepared with good reflow tool as i tried reflowing only MPM3630 smps ic with heat gun is not making a dent on solder blobs on pcb. i assume it has massive thermal mass underneath there... btw: my prototype pcb arrived and i just cut them last night. i need to perfect my reflow process using oven since vssop is not really easy to do by hand. and i'm quite busy with other things atm, so weekend is my hope for the next few weeks. ymmv.

Sounds like you need to convert a small toaster oven into a reflow.

[Randy222]

No scope model in this world is or will ever be 100% bug-free.
What's more, it's a very inexpensive scope - you can't expect the development department to sit down and fix every annoying bug, the budget isn't there for that.
With bugs, a distinction must be made between functionally relevant and just "annoying" bugs.
Rigol and other manufacturers will generally ensure that their cheap products are stable, anything else is more of a bonus.
I wouldn't want to get my hopes up with the FFT.
The bug with the faulty window coefficients has been around forever and the lack of features such as average and peak hold will probably not be rectified either, as even the largest scope, the Stationmax , only has rudimentary FFT features.
As of now the scope is stable and has some nice new features, if you want something else you have to buy a scope somewhere else.

Huh?
The unit is sold with a spec sheet. Buyers are expecting that the spec sheet (the things they are paying for) works without bugs.
I was not expecting my 804 turned into a 914 to behave 100%, but I do expect the 804 iteself to behave 100%.

[Martin72]

Then go and study the specs...
Is there anything in there that is currently not available or not working?

[shapirus]

I was not expecting my 804 turned into a 914 to behave 100%, but I do expect the 804 iteself to behave 100%.

...or, failing to deliver this on the initial release, the manufacturer must at least provide a publicly available issue tracker where customers could report bugs and expect reasonable reaction from the developers: acknowledgment, setting resolution milestones to future firmware versions etc.
Just like it is with any good software project whose maintainers aren't assholes.

[AndyBig]

Sounds like you need to convert a small toaster oven into a reflow.

I would prefer to use bottom heating to 150-180 degrees and burn from above with a hairdryer as usual, instead of heating the entire board to 300 degrees in the oven.

[shapirus]

and burn from above with a hairdryer as usual

that's one hell of a hairdryer you've got there...

[AndyBig]

that's one hell of a hairdryer you've got there...

))) Of course, I meant a soldering hot air gun ) Dumb Google translation )

[OJBK]

I don't own any of these models

...but I own the Edimax EW-7822ULC, so I built its driver for the USB IDs

Code: [Select]

0bda:b812
0bda:b82c
13b1:0043
7392:b822
7392:c822
and insmodded
https://sven.killig.de/android/DHO/system/lib/modules/88x2bu.ko
Its LED is blinking, and 5 GHz seems to work:

Can you Add ASUS USB AC53 device?Thank you
https://github.com/maccuaa/asus-ac53-rtl8822bu/commit/af6b0a19c79e6977c1cb5b7a8c4faf00a5286422

[shapirus]

...but I own the Edimax EW-7822ULC, so I built its driver for the USB IDs

Can you please elaborate on how you built the driver for the target platform? What toolchain you used, etc.

[Mechatrommer]

Sounds like you need to convert a small toaster oven into a reflow.

no worry, that is taken cared of... last night i tested my 138°C and 158°C solder paste and they reflowed as expected, my cheap oven got temp control from 100-200°C and a timer, so i think that will do without extra modification. btw: hairdryer is only suitable to dry the wife's hair, not to burn her to death to 150°C... ymmv.

[t_i_t_o]

Yes, obviously LA works without installing additional memory... Unfortunately, I can’t check its operation yet, due to the lack of an LA adapter, as soon as I get one, I’ll definitely check everything.  At the moment I am emulating the connection of an LA adapter by connecting the two rightmost pins of the LA connector (pin detect + pin gnd).  In any case, I will install additional memory, I assume that next week the two SKhynix H5TQ2G63FFR memory chips I ordered will arrive to me, they will be immediately installed on the board.  I will show the entire installation process with all the checks and measurements of all voltages and signals on the installed chips in a video on my YouTube channel https://youtube.com/@stepan.koshman

When you have the LA adapter, can you test the LA functionality without the RAM chips first, to verify it works and then populate the chips and see what's different?

[S2084]

I certainly understand that this would be the most correct thing.... But unfortunately I do not have this adapter.  All I can do is indirectly confirm or refute the operation of the installed memory chips by looking at the presence of activity on the data exchange lines with another oscilloscope....And I will do this, as I wrote above.

[sonic]

Can you Add ASUS USB AC53 device?Thank you

There you go:
https://sven.killig.de/android/DHO/system/lib/modules/88x2bu.ko