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Sniffing the Rigol's internal I2C bus

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ted572:

--- Quote from: bandgap on December 05, 2013, 05:00:04 pm ---
--- Quote from: ted572 on December 05, 2013, 02:07:54 pm ---In the meantime it would be nice to see your before/after spreadsheet data.  It is encouraging to hear that you were able to successfully complete the process.  Thank you for describing your method and offering to share your data with us.

--- End quote ---

I'll clean up my spreadsheet sometime and upload it in the next day or so. You CAN calibrate the HF flat curve without having going through the AC amplitude and LF flat curve. You might want to start with HF flat and see if that flattens everything up on the high end while keeping your low end in tact. I may even restore my preset values and do the same.

I re-calibrated my LF flat curve very carefully and also did a calibration of the DC offset (very easy to do that one.) However, this didn't fix my drop-off below 10 Hz. The fact that I have the same thing for both channel 1 and 2 suggests that it wasn't just a silly error of entering a number incorrectly.

-Clayton

--- End quote ---

Clayton:  I'm looking forward to seeing your spreadsheets when they are done.  Thank you for offering to share them.

I'll do the HFLAT cal. and post the results.  Thank you for suggesting going ahead without doing AC and LFLAT.

Do you think there is anything to be gained by doing the AC and LFLAT calibrations, or do you think we can skip them without loosing something?  Or is it too soon to know?

Ted

bandgap:

--- Quote from: ted572 on December 05, 2013, 09:23:35 pm ---I'll do the HFLAT cal. and post the results.  Thank you for suggesting going ahead without doing AC and LFLAT.

Do you think there is anything to be gained by doing the AC and LFLAT calibrations, or do you think we can skip them without loosing something?  Or is it too soon to know?

Ted

--- End quote ---

Well based on your results, we should know! :) I may also reset mine to preset values and just do the HFLAT calibration to see how things turn out.

-Clayton

thetooth:
As promised here is GEL file for DS2000A: http://thetooth.name/dev/DS2000(DSP)update%20(2).rar

Version is 00.02.01.00.03 November 5th, 2013, i have not tested it but hopefully someone here will find it interesting.

neslekkim:
So DS2000 and DS2000A series are the same then, almost?, signature in the top are similar/same? DS2202
00.02.01.00.03


from the file:
DS2072A
DS2102A
DS2202A
DS2302A
MSO2072A
MSO2102A
MSO2202A
MSO2302A
MSO2072
MSO2102
MSO2202
MSO2302

USB
RS232
SPI
I2C
CAN
56M/28M
100M BandWidth
200M BandWidth
300M BandWidth

Pinkus:
Well, the firmware also shows these strings:
CAN
LIN
USB

So, how can somebody enable CAN / LIN / USB protocol analyzer at a DS2072??

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