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Need help hacking DP832 for multicolour option.

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ted572:
When I first got a Rigol DM3058E (Bench-Top DMM) several years ago I would get 6 1/2 digit voltage measurement data when I queried it via USB from my PC using MS Excel.  The PC's 6 1/2 dgits went away later with a firmware change and hasn't been seen since.

I Understand that the DM3058 and DM3058E both have a LCD Display capable of displaying the 6 1/2 digits. And if this is valid, could a DM3058E/DM3058 possibly be hacked into a DM3068 'close enough' to also display 6 1/2 digits?

I asking on this thread because this seems to be where you real sharp software/firmware guys are hanging out.

PS  Thank you so very much for putting color into my DP832.
By the way I sent the SCPI command via USB using EEVbloger 'PeDre' Messinstrumente (Measuring instruments - program for data transfer and control) which is very easy and fast.  Here is a English link to 'Messinstrumente' (Measuring instruments - program for data transfer and control) ->  https://translate.google.com/translate?hl=en&sl=de&u=http://peter.dreisiebner.at/messinstrumente/index.htm

Edit: Added that I used 'Messinstrumente' to send SCPI command for DP832/A

Macbeth:

--- Quote from: ted572 on July 07, 2019, 06:45:06 pm ---When I first got a Rigol DM3058E (Bench-Top DMM) several years ago I would get 6 1/2 digit voltage measurement data when I queried it via USB from my PC using MS Excel.  The PC's 6 1/2 dgits went away later with a firmware change and hasn't been seen since.
--- End quote ---

In your Excel VBA code you can change the reading mode to CMDSET AGILENT instead of CMDSET RIGOL. This will even give you 8 1/2 digits for free!  :-+ With two caveats... The first of which is you will have to filter out some garbage from the SCPI READ? results, a bug I reported nearly half a decade ago to RIGOL, and still not fixed. The second is most of those extra digits are just noise anyway.


--- Quote ---I Understand that the DM3058 and DM3058E both have a LCD Display capable of displaying the 6 1/2 digits. And if this is valid, could a DM3058E/DM3058 possibly be hacked into a DM3068 'close enough' to also display 6 1/2 digits?

--- End quote ---

The DM3068 is an entirely different beast to the DM3058 despite the outward appearances. The least of which it uses an LM399 for 7V ref instead of the MAX6325 2.5V ref used in the DM3058.

There is no software hack to switch a 3058 to a 3068, they are completely different hardware and firmware.

(However the firmware for the 3058 is unencrypted and quite hackable for those so inclined.)

ted572:

--- Quote from: Macbeth on July 09, 2019, 12:15:24 am ---
--- Quote from: ted572 on July 07, 2019, 06:45:06 pm ---When I first got a Rigol DM3058E (Bench-Top DMM) several years ago I would get 6 1/2 digit voltage measurement data when I queried it via USB from my PC using MS Excel.  The PC's 6 1/2 dgits went away later with a firmware change and hasn't been seen since.

I Understand that the DM3058 and DM3058E both have a LCD Display capable of displaying the 6 1/2 digits. And if this is valid, could a DM3058E/DM3058 possibly be hacked into a DM3068 'close enough' to also display 6 1/2 digits?
--- End quote ---

The DM3068 is an entirely different beast to the DM3058 despite the outward appearances. The least of which it uses an LM399 for 7V ref instead of the MAX6325 2.5V ref used in the DM3058.

There is no software hack to switch a 3058 to a 3068, they are completely different hardware and firmware.

(However the firmware for the 3058 is unencrypted and quite hackable for those so inclined.)

--- End quote ---

When Rigol NA was located in Ohio one of the Support Specialist there told me that the DM3058 and DM3058E DMMs were calibrated on the same Test Fixture as the DM3068, and the he understood that the sixth digit I saw on  the MS Excel work sheet was indeed valid.  Although of course that I couldn't expect the same accuracy as the DM3068. No problem with this, although if the DM3058/E firmware isn't encrypted, that gives me hope that we may be possibly able to get a another digit to be displayed (for 6 1/2 digits).  That indeed would in it-self be very nice.

Do you have any thoughts on the possibility of at least being able to get a 6 1/2 Display capability on the DM3058/3058E?  I'm only asking for your opinion.  And thank you for your initial reply to me, as I certainly understand the difference between  the DM5058/E and DM3068 much better now.    Cheers, Ted

tv84:
I included here the list of DM3058 / DM3068 SCPI commands based on the latest .LDR.  The FW has 3 separate SCPI command blocks.

https://www.eevblog.com/forum/testgear/lists-of-rigol-scpi-commands/msg2460030/#msg2460030

I think there are commands that allow a model change.

What's the output of?

:SYSTem:TYPE?

ted572:

--- Quote from: tv84 on July 09, 2019, 07:11:18 pm ---I included here the list of DM3058 / DM3068 SCPI commands based on the latest .LDR.  The FW has 3 separate SCPI command blocks.

https://www.eevblog.com/forum/testgear/lists-of-rigol-scpi-commands/msg2460030/#msg2460030

I think there are commands that allow a model change.

What's the output of?

:SYSTem:TYPE?

--- End quote ---
Hello TV84:  The output is -> DM3058E        Thanks, Ted

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