EEVblog #978 - Keysight 1000X Hacking

[sprit]

YOU ARE MY HERO BUD. OMG i cant believe that i can do it. Dammmm. What a long story

[sprit]

The usercal fail, maybe i need to restore to original uboot

[sprit]

After restoring uboot to original, the UserCal error continues to fail. I'll try looking around to see if anyone else has this problem.

[Bud]

The thick trace is worrying me. You may have lost your factory calibration data. This could have happened when you were dicking around with Uboot that had wrong checksum, which caused incorrect ECC being used, which caused more NAND corruption. Factory calibration is different from User calibration.

Post a screensot of a sinewave signal. Frequency does not matter.

[sprit]

Exactly, im lost my calibration data. Now i cant click on the user Cal button any more, its crash.

[Bud]

Find my post in this thread where i attached a file that drops the scope into Windows shell. Get the file and practice using it. Do not change anything in Windows, just practice to browse. Let us know when you are comfortable using it.

This is a lesson for all you people out there with itchy fingers: Do Not fuck around with trying to boot your scope if you see ECC  or FPGA errors. They must be fixed first, or you end up with Much worse situation.

Information how to change Uboot so it allows you to interrupt boot was posted in this thread, it is stunning that even instructions were provided, people still screw up.

[sprit]

Thanks Bud, I hope you enjoyed your weekend

I found it on page 32. And I tried to play around with this Windows CE. I saw you uploaded the UserCal data file, can I use that to fix the usercal crash error? I am not sure how I should load it.

Sincerely,
Feng

[Bud]

Do you have a USB hub ? So you can connect a keyboard and USB stick at the same time to the scope's front USB port.

[WS]

 Hi guys!  I've looked through all 46 pages of the forum, but I still don't understand what exactly I need to do to unlock it. Maybe someone who has already done it will write a brief instruction? I have 1002g. I want to increase memory depth and frequency. Is it enough to install this Bud1M firmware (https://drive.google.com/file/d/18rneopltnhKJXVuLmHV0LoR19JnQlt2g/view?usp=drive_link) or do I need to solder resistors or something else? Thanks!

[Anthocyanina]

after quite some time, and a bunch of failed boots, and freezes, and probing around, i noticed that the screws on the BLT module can screw in more than enough to just keep the module in place. upon noticing this, i decided to try removing the module and just put it in lightly, and screw it in just barely a touch past the screws making contact with the module, and well, ever since then it has been working fine. i've left it on for many hours at a time, ran self test multiple times, user cal, probed stuff with it, and it's been so long, and it has not failed a single boot, or frozen, or anything weird. I guess all this was just caused by overtightening the screws?

whatever may have been happening, it think i'm comfortable saying it's fixed now. did i fix it? i wouldn't say so because i don't have absolute certainty of what the problem was, but be it me, or random chance, or whatever, it works again! now i just need to get the USB power switch IC and hope i don't kill it when i solder that in! 

[hakatu]

Hi,

My EDUX1002G keep saying "P-clock failure", and when I use wavegen it says "too high voltage".

I updated the firmware and did a hardware selftest where it failed at "ADC Trigcomp & Mux". When powered on, the DSO keeps ticking the sound of trigger.

Any ideas what's going on with the scope? I attached the image for reference.

Thank you

[sprit]

hi ws

I will send the unlock file link tonight. You just need to download, copy to usb then plug into the usb port of the oscilloscope and proceed to update. All features will be unlocked.

[sprit]

Hi hakatu

This is a hardware issue. If possible, you should reflow the ADC or send it to a local repair service.

[hakatu]

Is it possible to know which ADC to reflow on the PCB? There's one on the 2nd channel that makes the relay of that channel ticking.

[effeffe]

EDUX1002A to DSOX1102G ，11th order Butterworth filter，the parameters are not from DSOX1000G or EDUX1000G。

What are the values of the other resitors and capacitors that are unmarked? Sorry about this, bu t I'm getting a tad crazy after accidentally ordering the wrong components values and size...