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DL3021 to DL3031 Conversion Discussion

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NE666:
I would also like to express my gratitude to member Pedrofabian (and member Vaiti from the DP832 hacking thread) for sharing their work and findings.

DL3021 -> DL3031A with FW rev. 00.01.04, HW rev. 01.00

Mat_J:

--- Quote from: electr_peter on February 15, 2022, 03:34:18 pm ---
--- Quote from: tv84 on February 14, 2022, 09:35:29 pm ---What about DL3051?

--- End quote ---
Tested DL3051A option. Model number changes (*IDN? -> RIGOL TECHNOLOGIES,DL3051A,DL...........,00.01.05.00.01)
On boot it shows error "Self-test error for OCP reference voltag" (after canceling error doesn't reappear until next boot).
Current ranges changed to 9/90A (compared to 4/40A or 6/60A), but max current limit remains unchanged at 70A (same as for DL3021/3031).
Max power setting increases to 500W (compared to 200 or 350W).
Other than that, seems to work, accuracy and functions remain unchanged.

So full mod to 150V/90A/500W DL3051A would require some work with FW (OCP reference?, max current limit) and HW (MOSFETs and driving circuitry).

--- End quote ---

Thanks for testing this,
I cant find any mention of a DL3051 outside of this forum and a Russian site; do these exist in the wild?
I would be interested in purchasing one to see what is required to upgrade my DL3021's from DL3031A's to DL3051A's
Has anyone had luck running these at 500w as is for extended periods of time with just the rigol-key? (>10 hours)
I'm using them to match 5kw Li-ion battery's, and being able to test capacity faster would be really nice

thm_w:

--- Quote from: Mat_J on January 09, 2024, 01:23:28 am ---Thanks for testing this,
I cant find any mention of a DL3051 outside of this forum and a Russian site; do these exist in the wild?
I would be interested in purchasing one to see what is required to upgrade my DL3021's from DL3031A's to DL3051A's
Has anyone had luck running these at 500w as is for extended periods of time with just the rigol-key? (>10 hours)
I'm using them to match 5kw Li-ion battery's, and being able to test capacity faster would be really nice

--- End quote ---

No you can't purchase one, they don't exist. Rigol often enters a bunch of model numbers and some may or may not work out. In this case they probably tested 500W and it wasn't reliable or they didn't see the market demand.

It would be up to you to test it with a thermal camera. Since the design appears it intended additional FETs to be populated: https://www.eevblog.com/forum/testgear/dl3021-to-dl3031-conversion-discussion/msg4007887/#msg4007887 you would be taking a risk.

Probably make more sense in this case to purchase a higher wattage load (1kW+).

xjordanx:
I just bought a DL3021 and it will not show up in Ultra Sigma or Ultra Load software, even though it does show up successfully in Device Manager in Windows. Any ideas what makes Ultra Sigma / Ultra Load not able to see the load box?

xjordanx:
Solved:

--- Quote from: xjordanx on August 30, 2024, 12:45:51 am ---I just bought a DL3021 and it will not show up in Ultra Sigma or Ultra Load software, even though it does show up successfully in Device Manager in Windows. Any ideas what makes Ultra Sigma / Ultra Load not able to see the load box?

--- End quote ---
For those who may have the same issue: The Rigol DL3021 was using a driver that had been installed previously in Windows 10 Pro however I had since "upgraded" the OS to Windows 11. Checking the Events tab in the device Properties dialog from in Device Manager revealed:

--- Code: ---Device settings for USB\VID_1AB1&PID_0E11\DL3A261400311 were not migrated from previous OS installation due to partial or ambiguous device match.

Last Device Instance Id: USB\VID_058F&PID_6387\29D7899E
Class Guid: {36fc9e60-c465-11cf-8056-444553540000}
Location Path: PCIROOT(0)#PCI(1400)#USBROOT(0)#USB(2)
Migration Rank: 0xF000FFFFFFFF0023
Present: false
Status: 0xC0000719

--- End code ---
With that hint I "Uninstalled" the device and checked the box to "Attempt to remove Device Driver". After which I unplugged and re-plugged the USB cable - now the device shows up again as "USB Test and Measurement Device (IVI)" whereas before it appeared as "DL3000 Serials".

Now Ultra-Sigma can find the device!!

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