Products > Test Equipment

DG4000 - a firmware investigation

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zitt:

--- Quote from: tv84 on December 17, 2019, 09:58:21 am ---Without opening it, no.

--- End quote ---

Are you aware of any procedure / walk thru on how to do this?
I'm thinking maybe I'll do this when the warranty expires in a couple of months.
I feel like I may have seem some references earlier in the thread; but not 100% sure.

Am I being overly paranoid?

RoGeorge:
Yes, you are.  :)

Just load the modified by tv84 firmware 1.08, then load the license file for 200 MHz, then load the latest 1.14.00.01 firmware from Rigol.  To generate the license.CEN file I used the tv84 cengen.exe in a virtual Windows XP machine (because I have Linux).  Ask about any details if in doubt.

Nothing to backup, and nothing bad will happen anyway.  Even if you manage to brick your DG4000, you can still claim the warranty, and even if they'll refused to service it, people here could still guide to un-brick it yourself.

Good luck with the 200 MHz upgrade.

Teneyes:
Thanks for the message and great  work.
I,ll  will give it a try after Xmas
Wish you a great holiday and New Year.

zitt:

--- Quote from: RoGeorge on December 18, 2019, 07:20:35 am ---Yes, you are.  :)

--- End quote ---

Agreed. I took the callenge last night. Couple of issues I had:
1) Tried a 32GB stick. Wouldn't work. Utility button never began flashing. Using an old 1GB stick I had work perfectly.
2) Couldn't figure out how to "read" the license file. I had assumed I needed to find the license entry screen. I later learned all I had to do was "read" the license.cen file from the utitlity menu.
3) V1.14 upgrade was dirt simple using the same process as the back flash.

Now my only goal is to figure out how to calibrate for above 60MHz. Looking over the document; I lack a "calibrated" DVM and Frequency Counter. I'm actually disappointed I can't use my 1GHz OSCOPE. :( Didn't read thru the whole document.

TurboTom:
zitt -
did you check the level accuracy of your DG4000 after the "liberation"? I found mine to be spot on up to 200MHz (DS4102 from Q4/2015). Maybe yours also doesn't need to be calibrated at all.

P.s. If you haven't got a spectrum analyzer or a calibrated level meter, you may DIY a detector type level tester with a 50R terminator resistor (preferably 2*100R 1% 805 in parallel), a small signal, low capacitance schottky diode, a 10n smoothing capacitor and maybe a 10k load resistor, coupled to a multimeter. All this has to be assembled just a the back of a BNC connector to keep the impedance low. This "bodge" should give you a good idea of your generator's level accuracy.

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