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Sniffing the Rigol's internal I2C bus

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staze:

--- Quote from: Rigby on December 09, 2013, 07:37:37 pm ---
--- Quote from: staze on December 09, 2013, 07:10:31 pm ---I still have a feeling this is nothing more than the firmware checking the serial number, and enabling options based on that. It's the simplest way programmatically, and it would seem Rigol is all about simple.
--- End quote ---

It is equally simple to check the version of a Rigol ASIC or the firmware revision of some other chip, and those things won't be nearly as easy to change post-manufacture.  Sure, you can change how the firmware does the checking, or change the value the firmware looks for, but if the ASIC itself won't enable 50 ohms, changing the firmware won't do much.

edit: i'm being a debbie downer, sorry.

--- End quote ---

Yes, but as I mentioned, you can enable 50ohms through SPI... so clearly that's just a GUI thing. =/

But yes, it could be checking something else. I'm just being a Ollie Optimist. =P

WVL_KsZeN:
Here is another datapoint from a ds2072 after hacking it

"DS2202"
DS2a153602xxx
softw 00.01.01.00.02
hw 1.0.1.0.0
spu 03.01.05
wpu 00.06.05
ccu 12.29.00
mc 00.05

stupid of me, I didnt check the hw version before 'upgrading' to DSAZ with rigen v2.0b1. Seeing the other DS2072's reported with HW 2.0 and considering my serial, i think it's weird that mine is reporting HW1.0. I remember reading somewhere that DS2202 will not report the correct HW version, but I cannot find it back again..

Any clues?

AndersAnd:

--- Quote from: WVL_KsZeN on December 09, 2013, 09:53:20 pm ---Any clues?
--- End quote ---
Don't turn it on, take it apart, as Dave's motto is. Then you can probably see the HW version on the PCB.

cybernet:
fully official CAN and 300M Bandwidth on DS2000 (non A) ;-))))) *ole*
will post right option codes in a minute ...

marmad:

--- Quote from: cybernet on December 09, 2013, 10:26:37 pm ---fully official CAN and 300M Bandwidth on DS2000 (non A) ;-))))) *ole*
will post right option codes in a minute ...

--- End quote ---

Wow... fast  ;D

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