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Sniffing the Rigol's internal I2C bus

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ted572:
DG4000 Calibration Restoration:
Re. My previous post #1771 above.

I now believe that the Restoration of the DG4000 calibration should be done for AC, LFLAT, and HFLAT to correct some other potential glitches.  Nothing is being changed, or has to be connected to the DG4000, so the process goes fast.  Just bring up and save all the default values for each step, starting with 1, or 1-1 (A/R).
You can also do this for 'Inner Imped' and 'Offset', although I haven't seen a case or benefit for it yet.

I just wouldn't do this for Freq Accuracy, or Counter, unless you see a need for it, and then you should complete this cal. process as prompted.

The calibration restoration is effective for both channels, so it isn't necessary to repeat each cal. routine for the other channel.

Teneyes:

--- Quote from: ted572 on December 06, 2013, 05:08:21 pm ---DG4000 Calibration Restoration:
   So to calibrate (or rather restore the previous calibration of) your DG4000:

Press - Utility, Test/Cal, Secure Code, (put in PW) 2010, Enter, Secure OFF, (the result should be) Secure ON, Access gained.
Then for Cal. select HFLAT, Call Point (start at HFLAT 1-1), Measure Value, Input Value, press Save and wait for it to complete (about 3 seconds), select Cal Point for the next step.  Repeat for all 60 steps.  Then your done and you didn't have to make measurements or level changes.  You didn't even have to hook anything up to your DG4000 except for AC power. Hi


--- End quote ---

DG4000 Calibration Restoration:
I think the  steps:
   "Measure Value",
   "Input Value",
   "Rotate select next cal Point"
 can be stepped thru the 62 points and then save only once to save time ,

Does anyone else see the output drop-off increases from 160-200 MHz?
or is that just my scope.

or is that why Rigol only offered  up to DG4162

ps should this Discussion be moved to the DG4000 Blog
DG4000-a-firmware-investigation

ted572:

--- Quote from: Teneyes on December 07, 2013, 11:33:53 am ---
--- Quote from: ted572 on December 06, 2013, 05:08:21 pm ---DG4000 Calibration Restoration:
   So to calibrate (or rather restore the previous calibration of) your DG4000:

Press - Utility, Test/Cal, Secure Code, (put in PW) 2010, Enter, Secure OFF, (the result should be) Secure ON, Access gained.
Then for Cal. select HFLAT, Call Point (start at HFLAT 1-1), Measure Value, Input Value, press Save and wait for it to complete (about 3 seconds), select Cal Point for the next step.  Repeat for all 60 steps.  Then your done and you didn't have to make measurements or level changes.  You didn't even have to hook anything up to your DG4000 except for AC power. Hi


--- End quote ---

DG4000 Calibration Restoration:
I think the  steps:
   "Measure Value",
   "Input Value",
   "Rotate select next cal Point"
 can be stepped thru the 62 points and then save only once to save time ,

Does anyone else see the output drop-off increases from 160-200 MHz?
or is that just my scope.

or is that why Rigol only offered  up to DG4162

ps should this Discussion be moved to the DG4000 Blog
DG4000-a-firmware-investigation

--- End quote ---
Yes, everyone with the DG4000 freq. expansion patch will have the issue of level drop-off starting somewhere above 120 MHz, although the Calibration Restoration  corrects it.

Thanks for the tip on speeding up the process by Saving at the end.

cybernet:
had some questions in my inbox, pretty busy atm so not really time to further play with rigols until xmas.

anyhow for those playing with IDA here is an updated bundle of DG/DS flirt signatures for IDA - somehow signatures for bfin suck (cpu module needs updating) but its better than nothing.

http://www.sendspace.com/file/xdvlw2

and here is a bfin loader/cpu module for ida that supports reading LDR format (extracted dump_00_XXX from GEL files which i postet earlier) - geltool kit will
take some time to release, its to dangerous right now, because u could f***up your bootloader if not careful.

http://www.sendspace.com/file/ymtg9g

Mark_O:

--- Quote from: AndersAnd on December 06, 2013, 02:09:17 pm ---
--- Quote from: neslekkim on December 06, 2013, 07:39:46 am ---So DS2000 and DS2000A series are the same then, almost?, signature in the top are similar/same? DS2202
00.02.01.00.03...
--- End quote ---
The .GEL firmware name is also exactly the same for both the DS2000 and DS2000A series: DS2000Update.GEL
So maybe the DS2000 series can also be updated with the DS2000A firmware.
--- End quote ---

Yes, that is actually a possibility.


--- Quote ---From the .GEL file it looks like Rigol has plans to also release a MSO2000/MS2000A series with built-in logic analyzer.

--- End quote ---

Yes, this has been known for some time.  Ever since a DS2000 with the Rev2 hardware was opened, and the motherboard revealed spots for the LA FPGA, and the optional SigGen.  They're doing things in stages.  Someday there's likely to be an MSO2xx2A-S too.  What some would like to see is an MSO/DS2xx4A, but no indications of that happening.

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