Rigol DP2031 - Page 1
Forum section: electronics / testgear

author: KrzysztofB
author_rank: Regular Contributor
timestamp: November 28, 2022, 04:55:26 pm
content: So this thing just showed up.Sending some photos and if anyone is interested into some details, just ask.Best regardsKrzysztof

author: electr_peter
author_rank: Unknown
timestamp: November 28, 2022, 08:17:46 pm
content: Hi,Can you check:low current measurement function (it boats \$\mu A\$ resolution)Are all channels fully isolated from each other?noise level from fan at max load

author: KrzysztofB
author_rank: Regular Contributor
timestamp: November 28, 2022, 08:32:48 pm
content: Yes I can. Tomorrow if that's ok, as it's pretty late here.

author: Bud
author_rank: Super Contributor
timestamp: November 28, 2022, 09:03:14 pm
content: They really went to town with designing the bumpers

author: radensb
author_rank: Contributor
timestamp: November 28, 2022, 09:31:52 pm
content: Any plan to do a proper deep dive and teardown? I'm really curious to see if this and the new DP900 series have common ancestry to the DP800 series.

author: 2N3055
author_rank: Super Contributor
timestamp: November 28, 2022, 10:51:23 pm
content: Quote from: Bud on November 28, 2022, 09:03:14 pmActually same as old ones.. Rear bumpers are very useful, you can stand PSU vertically and work like that..

author: jjoonathan
author_rank: Frequent Contributor
timestamp: November 28, 2022, 11:32:57 pm
content: Non Auto-MDIX? WHAT DECADE IS IT?

author: KrzysztofB
author_rank: Regular Contributor
timestamp: November 29, 2022, 10:24:28 am
content: Quote from: electr_peter on November 28, 2022, 08:17:46 pmlow current measurement function (it boats \$\mu A\$ resolution)Low current function seems to be working fine. Most of the time i was getting max 3uA off comparing to DMM. Worst on range 0-10uA then it was a bit more off like 5uA.Are all channels fully isolated from each other?Measuring resistance between negative terminals of both 32V channels i got around 76MOhms.noise level from fan at max loadDidn't try with high load yet, but I assume it will be the same as at the time of power up. For some it might be noisy. For me it sounds similar than my TTI power supplies.Personally I like that bumpers. Stacks nicely with Hantek.And Auto MDIX... Well I have bigger worries in my life, but yes, bit not up to date.

author: KrzysztofB
author_rank: Regular Contributor
timestamp: November 29, 2022, 11:11:11 am
content: Some pics

author: thm_w
author_rank: Super Contributor
timestamp: November 29, 2022, 11:09:21 pm
content: Looks very different from their earlier supplies, layout is similar, but component choices have changed a lot.Huge caps used on the inputs.Can't see what output capacitance they are using now, very important for a low current supply.CME is a Chinese micro company, now Hercules Micro never heard of them before. Can't quite make out the part number, but it might be one with FPGA fabric:http://en.hercules-micro.com/product/index73.htmlThe front panel seems to be modular/reusable design, along the lines of Keithley DMM's.The main processor board is Allwinner A40i, quad core 1.2GHz:https://www.allwinnertech.com/index.php?c=product&a=index&id=69

author: oliv3r
author_rank: Frequent Contributor
timestamp: December 19, 2022, 02:43:59 pm
content: Very interesting, with an A40i, it must be running Linux.Funny how they jump from supplier to supplier (rockchip for the new DSO etc). I bet software engineering effort is 'free' right?having a software platform would help a lot.But WHY this horrible keypad? Why not the standard 3x3 layout? Am I missing something that is 'normal and common' in EE circles?Next, we need some firmware dumps so we can hack it!

author: coromonadalix
author_rank: Super Contributor
timestamp: December 19, 2022, 04:33:40 pm
content: loll i hate this kind of keypad, i have the impression of using an old "wheel dial" telephone lollSeems well built

author: KrzysztofB
author_rank: Regular Contributor
timestamp: December 20, 2022, 02:04:53 pm
content: After using it for a while I can tall you, circular layout is least annoying part of user interface.The same goes for DG2102 generator.Hardware wise devices feel ok, but UI... dear lord, I'm trying hard, but it's so non intuitive that just hurts my brain.

author: hve
author_rank: Regular Contributor
timestamp: April 12, 2023, 08:19:22 pm
content: There is some firmware available:https://www.rigol.eu/Public/Uploads/uploadfile/files/20230321/20230321002306_6418886a99c29.zipIts a rar archive, extract using:Code:unrar x 20230321002306_6418886a99c29.zipthen there's a GEL file, extract using:Code:tar xvf DP900_DP2000_Update.GEL-rw-r--r-- adil/root 35836928 2023-02-08 13:52 tina-r40-m2ultra.swu-rw-r--r-- adil/root 105900 2022-04-08 04:44 sousa_fpga.024.bin-rw-r--r-- adil/root 185 2023-02-08 13:52 image_info.txt-rw-r--r-- adil/root 108 2023-02-08 13:52 checksum.txtthen there's a cpio archive:Code:cpio -i <tina-r40-m2ultra.swu-rw-r--r-- 1 henk henk 3656 Apr 12 22:04 sw-description-rw-r--r-- 1 henk henk 256 Apr 12 22:04 sw-description.sig-rw-r--r-- 1 henk henk 15728640 Apr 12 22:04 recovery-rw-r--r-- 1 henk henk 1196032 Apr 12 22:04 uboot-rw-r--r-- 1 henk henk 32768 Apr 12 22:04 boot0-rw-r--r-- 1 henk henk 4194304 Apr 12 22:04 kernel-rw-r--r-- 1 henk henk 14680064 Apr 12 22:04 rootfsThen there's a squashfs filesystem:Code:file rootfsrootfs: Squashfs filesystem, little endian, version 4.0, xz compressed, 14674551 bytes, 1446 inodes, blocksize: 262144 bytes, created: Wed Feb 8 12:49:37 2023So we have a sunix linux system running on your PSU unit together with an FPGA.

author: hve
author_rank: Regular Contributor
timestamp: April 12, 2023, 08:34:32 pm
content: Could not help myself:Code:unsquashfs -l rootfs > lst.h

author: hve
author_rank: Regular Contributor
timestamp: April 13, 2023, 09:02:58 pm
content: FPGA Chip is probably a CME HR03:Datasheet:

author: KrzysztofB
author_rank: Regular Contributor
timestamp: April 16, 2023, 07:27:35 am
content: That's actually pretty cool.But i guess it's just to fulfill curiousity, cause, there is not much you can do with it anyway.

author: hve
author_rank: Regular Contributor
timestamp: April 17, 2023, 12:40:50 pm
content: Quote from: KrzysztofB on April 16, 2023, 07:27:35 amAhhh yes the FPGA part was mostly out of curiosity, don't expect software mods anytime soon.I think Rigol used to stuff Xilinx in their designs, maybe Rigol has seen the writing on the wall and is moving its supply chain closer to homeBut the rest is serious, I am expecting a unit in a couple of days.I would like to be able to access this bit of kit using SSH as root.And it might be similar to the MSO5000 hack.

author: Jeroen3
author_rank: Super Contributor
timestamp: April 17, 2023, 01:04:08 pm
content: Quote from: jjoonathan on November 28, 2022, 11:32:57 pmA locally sourced ethernert phy clone?

author: hve
author_rank: Regular Contributor
timestamp: April 28, 2023, 03:56:28 pm
content: Auto negotiation is supported ...Code:Network Hardware ConfigurationStatus:CONFIGUREDPassword:SpecifiedLink Speed And Duplex Negotiation:AutomaticLink Speed:10 MbpsDuplex:Full Duplexhowever:Only 10 Mbps supported, indeed, what century is it...

author: Userli
author_rank: Regular Contributor
timestamp: July 01, 2023, 07:52:23 pm
content: Does anybody know, what it is about that Monitor function? It says the option is not enabled, you should buy it but it doesn't appear as an accessory in the shop.

author: Xoff
author_rank: Contributor
timestamp: July 04, 2023, 06:18:38 pm
content: The same message "Option is not installed, please buy it." on DP932A. It looks like Monitor function is not yet implemented in DP900/DP2000 series. You will not find it described in DP900/DP2000 User Guide (April 2022) either.On-line monitor and analysis functions option (AFK-DP800) exists for DP800 series.

author: Userli
author_rank: Regular Contributor
timestamp: July 05, 2023, 01:42:38 pm
content: Strangely enough it's in the code, the corresponding SCPI messages are defined and even it seems to be active. Only the access to the configuration is blocked.