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Sniffing the Rigol's internal I2C bus

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A Hellene:

--- Quote from: AndersAnd on December 10, 2013, 12:19:08 pm --- There's both a DS4000 and a MSO4000 HW version. MSO4000 is just a DS4000 with buil-in 16-bit logic analyzer.
--- End quote ---
Thank you. I suppose that both of these lines share the same PCB, since this way cuts the development and production costs dramatically.


-George

AndersAnd:

--- Quote from: A Hellene on December 10, 2013, 12:27:45 pm ---
--- Quote from: AndersAnd on December 10, 2013, 12:19:08 pm --- There's both a DS4000 and a MSO4000 HW version. MSO4000 is just a DS4000 with buil-in 16-bit logic analyzer.
--- End quote ---
Thank you. I suppose that both of these lines share the same PCB, since this way cuts the development and production costs dramatically.


-George

--- End quote ---
Yes I believe it's the same PCB, just with or without the extra LA components being mounted, and maybe a jumper to tell if it's a DS or MSO version.

A Hellene:
This is exactly what my previous thought was based on.


-George

NikWing:
hey all :)

I've just started reading this thread from the beginning. You're really great, wow :)
Thanks to everyone who contributed :)

I'm going to order a DS2102A-S later today or tomorrow, and after reading a bit here I just want to be really sure not to do something wrong.
So please tell me, if I order the 100 MHz DSO, will it be possible to unlock it to 300 MHz?
Despite it has the generator inside, it should be possible to find a way to unlock the other features?

That would really help me.
I also pondered just getting a 2102A without the generator and get a stand-alone device later. But since the A-S versions have one built-in (although it's just 25 MHz), it wouldn't take up extra space etc ...
That's why I'm still not sure if I do the right thing ^^;

Thanks!

cosmos:

--- Quote from: A Hellene on December 10, 2013, 12:09:52 pm ---
--- Quote from: cosmos on December 10, 2013, 11:47:29 am ---In the ds4k these straps are marked, and they correspond to the reported extended revision number.
--- End quote ---
Thank you for the information. Does the DS4k line have any hardware revisions (other than the basic one) with extended functionality, like the DS2kA and DS2kAS for example?


--- Quote ---It appears that the proASIC is the same or nearly the same s in the ds2k.
--- End quote ---
In the DS1002 line, the corresponding stage is the Lattice MachXO CPLD (which I called a LUT because it is not exactly a CPLD or an FPGA, but something in between).


-George

--- End quote ---

My ds4k have the same strapping as in the picture and the scope reports extended HW version number: 0.1.2.3 (same access to extended info as on a ds2k).
This corresponds to the straps at the top "xx.xx" being 01.10 (1.2) and the strap field below being 011 (.3) .
Not sure if the singel "ch" strap is the first digit (0.), but it would not be surprising.
Makes me wonder if "ch" relates to the number of scope channels.
Someone with a two channel DS4000 might want to report what number they have.

The LA on MSO4000 looks to be plugged into a connector (not mounted in DS4000) next to the lone (display handling?) FPGA near the Blackfin.
There is a cut out in the PCB with mechanical supports for the probe connector on the front.
Presumably there is a LA board in between with some FPGA on it.
 
EDIT. 
Got info from DS4012 owner,  he have HW version number: 1.1.1.3 
so that looks like it confirms that first digit is 4ch/2ch indication. as the "ch" note on the PCB also suggested.

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