Author Topic: Siglent SDM3045X - Enough is enough (Read 30489 times)

eloso · « **on:** December 31, 2021, 12:10:45 pm »

I was going to add a reply to a current thread about the 3045X but I was thinking maybe because I present a new question at the end, I should start a new thread. I trust the sysops will keep me right.

I have tried very hard to like my new Siglent 3045X Bench Multimeter - it is built into a proper steel case, beautiful LCD but it more or less stops there for me. It is indeed a first for me I am going to sell a piece of gear that is less than 6 months old and I will take the hit on cost.

For the record, the relay activation when measuring above 2V is so damn annoying. It occurs whether in Manual or Auto. - its not the noise , its the delay every single time you apply the probe to a point to be measured. OK, so the first thing I do at switch-on is set it to manual 60V which covers most of my bench work and gets rid of the annoying click. But what a PITA. I thought I was getting a nice multimeter experience but I can't see the low contrast blue on grey writing as used by the shift key, the thing clicks like crazy and the menu system is somewhat convoluted for me. Why can't you have a setting that allows it to restart in the same config as when you turned it off ? The SDS2000X Plus and the SVA3021X do this. Presumably the B-team were set to work on the cheaper bench meter.

What made me realise I was flogging a dead horse is that I usually switch on my trusty old cheap chinese VC8145 which apart from the flimsy case and the rather old hat (but gorgeously large and clear) display seems better in so many ways. Assuming the Siglent is accurate and within spec, then the VC8145 is too - they are extremely close on all ranges. Not much point in having the Siglent if it is the VC8145 that I instinctively choose for each session.

But I won't be defeated, for my retirement hobby and the occasional piece of work that still comes my way I like the idea of a good bench meter that is readable, has a screen like the Siglent, easy to use, doesn't click every time you make a measurement, switches on quickly, remembers the last settings and doesn't move around the bench when you press buttons. A test intrument that makes me feel happy to use, like my new SVA3021X and SDS2000X plus which are just great.

Any suggestions as to where I go once the 3045X has gone to a new owner. Apart from staying with the VC8145 which ticks many of those boxes (when glued to the shelf that is...

Cheers

Eloso

nctnico · « **Reply #1 on:** December 31, 2021, 01:25:46 pm »

You probably want to look at Keysight or Tektronix (Keithley) for a decent DMM. But it is going to cost you... Do you really need it? I have a Keysight 34461A 6.5 digit DMM but I only use it when I need to measure something really accurate; it has been bought for a specific project. My daily driver DMM is a VC8145 as well (for the last 10 years).

voltsandjolts · « **Reply #2 on:** December 31, 2021, 02:07:57 pm »

Sounds like an excellent excuse for watching ebay for a broken 6.5 digit in need of some repair.
Keithley 2000 pop up quite cheap now and again, unofficial schematic is available, as is much experience from knowledgable folks here.
And you can fit a 20 channel scan card to it if you want to.

tautech · « **Reply #3 on:** December 31, 2021, 03:45:38 pm »

Quote from: eloso on December 31, 2021, 12:10:45 pm

I was going to add a reply to a current thread about the 3045X but I was thinking maybe because I present a new question at the end, I should start a new thread. I trust the sysops will keep me right.

I have tried very hard to like my new Siglent 3045X Bench Multimeter - it is built into a proper steel case, beautiful LCD but it more or less stops there for me. It is indeed a first for me I am going to sell a piece of gear that is less than 6 months old and I will take the hit on cost.

For the record, the relay activation when measuring above 2V is so damn annoying. It occurs whether in Manual or Auto. - its not the noise , its the delay every single time you apply the probe to a point to be measured. OK, so the first thing I do at switch-on is set it to manual 60V which covers most of my bench work and gets rid of the annoying click. But what a PITA. I thought I was getting a nice multimeter experience but I can't see the low contrast blue on grey writing as used by the shift key, the thing clicks like crazy and the menu system is somewhat convoluted for me. Why can't you have a setting that allows it to restart in the same config as when you turned it off ? The SDS2000X Plus and the SVA3021X do this. Presumably the B-team were set to work on the cheaper bench meter.

What made me realise I was flogging a dead horse is that I usually switch on my trusty old cheap chinese VC8145 which apart from the flimsy case and the rather old hat (but gorgeously large and clear) display seems better in so many ways. Assuming the Siglent is accurate and within spec, then the VC8145 is too - they are extremely close on all ranges. Not much point in having the Siglent if it is the VC8145 that I instinctively choose for each session.

But I won't be defeated, for my retirement hobby and the occasional piece of work that still comes my way I like the idea of a good bench meter that is readable, has a screen like the Siglent, easy to use, doesn't click every time you make a measurement, switches on quickly, remembers the last settings and doesn't move around the bench when you press buttons. A test intrument that makes me feel happy to use, like my new SVA3021X and SDS2000X plus which are just great.

Any suggestions as to where I go once the 3045X has gone to a new owner. Apart from staying with the VC8145 which ticks many of those boxes (when glued to the shelf that is...

Cheers

Eloso

I've always wondered this about 3045X.....
There is no such model for the Chinese market but instead a 5.5 digit SDM3055X-E, that doesn't have the different measurement ranges to the other models a 3045X does.

Therefore I've always thought these might be candidates for hacks to SDM3055 which do have a 2V range.

Does SDM3045X HW = SDM3055X-E HW ? I think it might.

Calling tv84.........

Who's game to try ?

tv84 · « **Reply #4 on:** December 31, 2021, 04:07:03 pm »

Called me? I still have 2021 time to break something...

tautech · « **Reply #5 on:** December 31, 2021, 04:15:27 pm »

Quote from: tv84 on December 31, 2021, 04:07:03 pm

Called me? I still have 2021 time to break something...

https://int.siglent.com/upload_file/zip/firmware/A_multimeter/SDM3045X_5.01.01.07R1.zip
https://www.siglent.com/upload_file/zip/firmware/Desktop_multimeter/SDM3055X-E_2.01.01.12.zip

tv84 · « **Reply #6 on:** December 31, 2021, 06:29:58 pm »

SDM3045X_5.01.01.07R1 parsing:

Code: [Select]

File Header Size: 00000070
00000000 - File Checksum: BAFFC355 [00000004-008ADCFD] (with only the File Header decrypted)  CKSM OK
00000004 - File Size: 008ADC8E (without 0x70 bytes of the File Header)
0000000C - Product_ID: 11800
00000026 - Vendor/Brand: SIGLENT
0000003A - USB Host Controller: ISP1763
****************************************************
Decrypting the 0x2800 and 0x1400 blocks...
Reversing file...
XORing with 0xFF (incrementing pattern)...
XORing with 0xFF from 0x00456E47 until 0x008ADC8D
****************************************************
00000000 --- Section Checksum: B7DE4C81
00000004 --- Section Size: 008ADC5A [00000034-008ADC8D]  CKSM OK
00000008 --- Section Type: 7   (config.zip)
00000034 --- 008ADC8D  ***** ZIP file *****
Offset    Ver  Flag  Comp  Size      Packed    Modified             CRC32                          Name                                                Permissions Extra Details
00000034  2.0  0000  0008  00200000  00001640  23/05/2015 14:37:10  B8E3CEE6  [0000005C-0000169B]  datafs.img                                          MT: 23/05/2015 07:37:21  AT: 30/08/2021 02:09:39  CT: 30/08/2021 02:09:39
0000169C  2.0  0000  0008  000ADD8D  0003B8C3  03/07/2015 14:55:22  E74F3CF7  [000016C6-0003CF88]  libglog.so.0                                        MT: 03/07/2015 07:55:45  AT: 30/08/2021 02:09:40  CT: 30/08/2021 02:09:39
0003CF89  2.0  0000  0008  0028AD38  00285BB5  25/12/2015 11:18:11  377779EB  [0003CFB0-002C2B64]  ro_uImage                                           MT: 25/12/2015 03:18:22  AT: 30/08/2021 02:09:40  CT: 30/08/2021 02:09:40
002C2B65  2.0  0000  0008  0028AD38  00285B7C  25/12/2015 11:23:05  7ACA06CE  [002C2B8C-00548707]  rw_uImage                                           MT: 25/12/2015 03:23:10  AT: 30/08/2021 02:09:40  CT: 30/08/2021 02:09:40
00548708  2.0  0000  0008  00002A49  00000920  19/02/2016 16:56:10  644202F4  [00548733-00549052]  siglentlib.sh                                       MT: 19/02/2016 08:56:21  AT: 30/08/2021 02:09:40  CT: 30/08/2021 02:09:40
00549053  2.0  0000  0008  00000205  000000E3  31/03/2016 17:58:23  3A037020  [0054907A-0054915C]  update.sh                                           MT: 31/03/2016 10:58:47  AT: 30/08/2021 02:09:40  CT: 30/08/2021 02:09:40
0054915D  2.0  0000  0008  00007D46  00003215  26/10/2018 09:52:10  71C1EFB0  [00549186-0054C39A]  g_usbtmc.ko                                         MT: 26/10/2018 02:52:21  AT: 30/08/2021 02:09:39  CT: 30/08/2021 02:09:39
0054C39B  2.0  0000  0008  00200000  000010CD  28/01/2019 14:29:13  5B5BA7C3  [0054C3C6-0054D492]  firmdata0.img                                       MT: 28/01/2019 06:29:27  AT: 30/08/2021 02:09:39  CT: 30/08/2021 02:09:39
0054D493  2.0  0000  0008  0005A2E8  0002D242  21/06/2021 18:00:13  501F2B13  [0054D4BB-0057A6FC]  u-boot.img                                          MT: 21/06/2021 11:00:27  AT: 30/08/2021 03:52:45  CT: 30/08/2021 02:09:40
0057A6FD  2.0  0000  0008  000137D1  0000AF05  21/06/2021 18:00:18  7C461EB5  [0057A71E-00585622]  MLO                                                 MT: 21/06/2021 11:00:36  AT: 30/08/2021 03:52:45  CT: 30/08/2021 02:09:40
00585623  2.0  0000  0008  00944E04  003033FC  30/08/2021 09:10:15  62B86DD3  [00585648-00888A43]  sdm.app                                             MT: 30/08/2021 02:10:31  AT: 30/08/2021 02:11:47  CT: 30/08/2021 02:09:40
00888A44  1.0  0000  0000  00000000  00000000  30/08/2021 09:09:20  00000000  [00888A69-00888A68]  config/                                             MT: 30/08/2021 02:09:41  AT: 30/08/2021 02:09:43  CT: 30/08/2021 02:09:41
00888A69  2.0  0000  0008  000000FD  0000008A  25/01/2019 15:14:08  E54E5D04  [00888AA9-00888B32]  config/NSP_config_upgrade_info.xml                  MT: 25/01/2019 07:14:16  AT: 30/08/2021 02:09:41  CT: 30/08/2021 02:09:41
00888B33  1.0  0000  0000  00000000  00000000  30/08/2021 09:09:20  00000000  [00888B60-00888B5F]  config/ui_data/                                     MT: 30/08/2021 02:09:41  AT: 30/08/2021 02:09:43  CT: 30/08/2021 02:09:41
00888B60  2.0  0000  0008  0000433D  000041F3  03/09/2014 10:45:29  00DE4F09  [00888B9C-0088CD8E]  config/ui_data/basic_ms_4w.jpg                      MT: 03/09/2014 03:45:59  AT: 30/08/2021 02:09:41  CT: 30/08/2021 02:09:41
0088CD8F  2.0  0000  0008  0000361E  000034C3  03/09/2014 10:45:29  B4EF016D  [0088CDCC-0089028E]  config/ui_data/basic_ms_dcc.jpg                     MT: 03/09/2014 03:45:59  AT: 30/08/2021 02:09:41  CT: 30/08/2021 02:09:41
0089028F  2.0  0000  0008  00003AEC  00003988  03/09/2014 10:45:29  661F2326  [008902CC-00893C53]  config/ui_data/basic_ms_dcv.jpg                     MT: 03/09/2014 03:45:59  AT: 30/08/2021 02:09:41  CT: 30/08/2021 02:09:41
00893C54  2.0  0000  0008  00000F58  00000D9E  03/09/2014 10:45:29  EDEE1F8D  [00893C8E-00894A2B]  config/ui_data/softkey_1.jpg                        MT: 03/09/2014 03:45:59  AT: 30/08/2021 02:09:41  CT: 30/08/2021 02:09:41
00894A2C  2.0  0000  0008  00000D0D  00000C0F  03/09/2014 10:45:29  1E1129C1  [00894A66-00895674]  config/ui_data/softkey_2.jpg                        MT: 03/09/2014 03:45:59  AT: 30/08/2021 02:09:41  CT: 30/08/2021 02:09:41
00895675  2.0  0000  0008  00000B6F  000009DE  03/09/2014 10:45:29  85144740  [008956AF-0089608C]  config/ui_data/softkey_3.jpg                        MT: 03/09/2014 03:45:59  AT: 30/08/2021 02:09:41  CT: 30/08/2021 02:09:41
0089608D  2.0  0000  0008  00006800  00004354  02/06/2015 17:39:08  F6E55110  [008960C3-0089A416]  config/ui_data/Thumbs.db                            MT: 02/06/2015 10:39:17  AT: 30/08/2021 02:09:41  CT: 30/08/2021 02:09:41
0089A417  2.0  0000  0008  00004E05  00001D13  19/01/2015 16:40:10  5589C750  [0089A43C-0089C14E]  gpib.ko                                             MT: 19/01/2015 08:40:20  AT: 30/08/2021 02:09:39  CT: 30/08/2021 02:09:39
0089C14F  2.0  0000  0008  00020F50  0000D460  23/05/2015 12:04:19  7A7B9C9C  [0089C179-008A95D8]  musb_hdrc.ko                                        MT: 23/05/2015 05:04:39  AT: 30/08/2021 02:09:40  CT: 30/08/2021 02:09:40
008A95D9  2.0  0000  0008  00006677  000027C0  23/05/2015 12:04:19  897F1663  [008A9600-008ABDBF]  ti81xx.ko                                           MT: 23/05/2015 05:04:39  AT: 30/08/2021 02:09:40  CT: 30/08/2021 02:09:40
008ABDC0  2.0  0000  0008  00003C38  000014FC  23/05/2015 12:04:19  5E171496  [008ABDE9-008AD2E4]  udc-core.ko                                         MT: 23/05/2015 05:04:39  AT: 30/08/2021 02:09:40  CT: 30/08/2021 02:09:40
Disk Entries: 25   Total Entries: 25   Directory Size: 2451 bytes  [008AD2E5-008ADC77]
****************************************************
  File Processed OK

SDM3055X-E_2.01.01.12 parsing:

Code: [Select]

File Header Size: 00000070
00000000 - File Checksum: BB35EDC0 [00000004-008A1AB4] (with only the File Header decrypted)  CKSM OK
00000004 - File Size: 008A1A45 (without 0x70 bytes of the File Header)
0000000C - Product_ID: 11500
00000026 - Vendor/Brand: SIGLENT
0000003A - USB Host Controller: ISP1763
****************************************************
Decrypting the 0x2800 and 0x1400 blocks...
Reversing file...
XORing with 0xFF (incrementing pattern)...
XORing with 0xFF from 0x00450D23 until 0x008A1A44
****************************************************
00000000 --- Section Checksum: B844291E
00000004 --- Section Size: 008A1A11 [00000034-008A1A44]  CKSM OK
00000008 --- Section Type: 7   (config.zip)
00000034 --- 008A1A44  ***** ZIP file *****
Offset    Ver  Flag  Comp  Size      Packed    Modified             CRC32                          Name                                                Permissions Extra Details
00000034  2.0  0000  0008  00020F50  0000D460  23/05/2015 12:04:19  7A7B9C9C  [0000005E-0000D4BD]  musb_hdrc.ko                                        MT: 23/05/2015 05:04:39  AT: 29/06/2021 07:03:00  CT: 29/06/2021 07:03:00
0000D4BE  2.0  0000  0008  0028AD38  00285BB6  25/12/2015 11:18:11  377779EB  [0000D4E5-0029309A]  ro_uImage                                           MT: 25/12/2015 03:18:22  AT: 29/06/2021 07:03:00  CT: 29/06/2021 07:03:00
0029309B  2.0  0000  0008  0028AD38  00285B7C  25/12/2015 11:23:05  7ACA06CE  [002930C2-00518C3D]  rw_uImage                                           MT: 25/12/2015 03:23:10  AT: 29/06/2021 07:03:00  CT: 29/06/2021 07:03:00
00518C3E  2.0  0000  0008  00919340  002F72A5  29/06/2021 14:07:00  005C5A6D  [00518C63-0080FF07]  sdm.app                                             MT: 29/06/2021 07:07:01  AT: 29/06/2021 07:10:17  CT: 29/06/2021 07:03:00
0080FF08  2.0  0000  0008  00002A49  00000929  19/02/2016 16:56:10  644202F4  [0080FF33-0081085B]  siglentlib.sh                                       MT: 19/02/2016 08:56:21  AT: 29/06/2021 07:03:00  CT: 29/06/2021 07:03:00
0081085C  2.0  0000  0008  00006677  000027C9  23/05/2015 12:04:19  897F1663  [00810883-0081304B]  ti81xx.ko                                           MT: 23/05/2015 05:04:39  AT: 29/06/2021 07:03:00  CT: 29/06/2021 07:03:00
0081304C  2.0  0000  0008  0005A2E8  0002D246  21/06/2021 18:00:13  501F2B13  [00813074-008402B9]  u-boot.img                                          MT: 21/06/2021 11:00:27  AT: 29/06/2021 07:03:00  CT: 29/06/2021 07:03:00
008402BA  2.0  0000  0008  00003C38  000014FE  23/05/2015 12:04:19  5E171496  [008402E3-008417E0]  udc-core.ko                                         MT: 23/05/2015 05:04:39  AT: 29/06/2021 07:03:00  CT: 29/06/2021 07:03:00
008417E1  2.0  0000  0008  00000205  000000E3  05/01/2016 13:43:16  3A037020  [00841808-008418EA]  update.sh                                           MT: 05/01/2016 05:43:33  AT: 29/06/2021 07:03:00  CT: 29/06/2021 07:03:00
008418EB  1.0  0000  0000  00000000  00000000  29/06/2021 14:03:00  00000000  [00841910-0084190F]  config/                                             MT: 29/06/2021 07:03:01  AT: 29/06/2021 07:03:01  CT: 29/06/2021 07:03:01
00841910  2.0  0000  0008  000000FD  00000086  06/01/2016 16:53:14  430CA9C7  [00841950-008419D5]  config/NSP_config_upgrade_info.xml                  MT: 06/01/2016 08:53:28  AT: 29/06/2021 07:03:01  CT: 29/06/2021 07:03:01
008419D6  1.0  0000  0000  00000000  00000000  29/06/2021 14:03:00  00000000  [00841A03-00841A02]  config/ui_data/                                     MT: 29/06/2021 07:03:01  AT: 29/06/2021 07:03:01  CT: 29/06/2021 07:03:01
00841A03  2.0  0000  0008  0000433D  000041F3  03/09/2014 10:45:29  00DE4F09  [00841A3F-00845C31]  config/ui_data/basic_ms_4w.jpg                      MT: 03/09/2014 03:45:59  AT: 29/06/2021 07:03:01  CT: 29/06/2021 07:03:01
00845C32  2.0  0000  0008  0000361E  000034C3  03/09/2014 10:45:29  B4EF016D  [00845C6F-00849131]  config/ui_data/basic_ms_dcc.jpg                     MT: 03/09/2014 03:45:59  AT: 29/06/2021 07:03:01  CT: 29/06/2021 07:03:01
00849132  2.0  0000  0008  00003AEC  00003988  03/09/2014 10:45:29  661F2326  [0084916F-0084CAF6]  config/ui_data/basic_ms_dcv.jpg                     MT: 03/09/2014 03:45:59  AT: 29/06/2021 07:03:01  CT: 29/06/2021 07:03:01
0084CAF7  2.0  0000  0008  00000F58  00000D9E  03/09/2014 10:45:29  EDEE1F8D  [0084CB31-0084D8CE]  config/ui_data/softkey_1.jpg                        MT: 03/09/2014 03:45:59  AT: 29/06/2021 07:03:01  CT: 29/06/2021 07:03:01
0084D8CF  2.0  0000  0008  00000D0D  00000C0F  03/09/2014 10:45:29  1E1129C1  [0084D909-0084E517]  config/ui_data/softkey_2.jpg                        MT: 03/09/2014 03:45:59  AT: 29/06/2021 07:03:01  CT: 29/06/2021 07:03:01
0084E518  2.0  0000  0008  00000B6F  000009DA  03/09/2014 10:45:29  85144740  [0084E552-0084EF2B]  config/ui_data/softkey_3.jpg                        MT: 03/09/2014 03:45:59  AT: 29/06/2021 07:03:01  CT: 29/06/2021 07:03:01
0084EF2C  2.0  0000  0008  00006800  00004356  02/06/2015 17:39:08  F6E55110  [0084EF62-008532B7]  config/ui_data/Thumbs.db                            MT: 02/06/2015 10:39:17  AT: 29/06/2021 07:03:01  CT: 29/06/2021 07:03:01
008532B8  2.0  0000  0008  00200000  00001687  23/05/2015 14:37:10  B8E3CEE6  [008532E0-00854966]  datafs.img                                          MT: 23/05/2015 07:37:21  AT: 29/06/2021 07:03:00  CT: 29/06/2021 07:03:00
00854967  2.0  0000  0008  00200000  00000F6C  25/12/2015 10:58:00  B3B995C5  [00854992-008558FD]  firmdata0.img                                       MT: 25/12/2015 02:58:00  AT: 29/06/2021 07:03:00  CT: 29/06/2021 07:03:00
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tv84 · « **Reply #7 on:** December 31, 2021, 06:34:17 pm »

tautech,

You want someone to try crossflashing the SDM3055X-E_2.01.01.12 FW in a SDM3045X, right?

tautech · « **Reply #8 on:** December 31, 2021, 07:18:45 pm »

Quote from: tv84 on December 31, 2021, 06:34:17 pm

tautech,

You want someone to try crossflashing the SDM3055X-E_2.01.01.12 FW in a SDM3045X, right?

It's my suspicion it could be done.

We can chat privately if you wish.

tv84 · « **Reply #9 on:** December 31, 2021, 07:36:15 pm »

Quote from: tautech on December 31, 2021, 07:18:45 pm

It's my suspicion it could be done.

OK, in that case, patch the original SDM3055X-E_2.01.01.12.ADS with the following 16 bytes.

Then it's ready to flash in a SDM3045X. As always, do it at your own risk.

bdunham7 · « **Reply #10 on:** December 31, 2021, 07:40:12 pm »

tautech · « **Reply #11 on:** December 31, 2021, 07:51:13 pm »

Quote from: tv84 on December 31, 2021, 07:36:15 pm

Quote from: tautech on December 31, 2021, 07:18:45 pm
It's my suspicion it could be done.

OK, in that case, patch the original SDM3055X-E_2.01.01.12.ADS with the following 16 bytes.

Then it's ready to flash in a SDM3045X. As always, do it at your own risk.

Great, will try tonight.....things to do today.

Pinkus · « **Reply #12 on:** January 07, 2022, 11:34:57 pm »

So ... did you try?

tautech · « **Reply #13 on:** January 08, 2022, 03:19:57 am »

Quote from: Pinkus on January 07, 2022, 11:34:57 pm

So ... did you try?

No as we have an impending sale on our last one.

Still it's something I'd like to try when we have the chance.
PM me if you like.

Pinkus · « **Reply #14 on:** January 09, 2022, 06:15:49 pm »

Quote from: tv84 on December 31, 2021, 07:36:15 pm

Quote from: tautech on December 31, 2021, 07:18:45 pm
It's my suspicion it could be done.

OK, in that case, patch the original SDM3055X-E_2.01.01.12.ADS with the following 16 bytes.

Then it's ready to flash in a SDM3045X. As always, do it at your own risk.

Since Tautech assured me that there were ways to undo this (in the case of bricking my unit), I tried it for me and for you folks: it works without problems. My SDM3045x became a SDM3055x.
Beside the extra digit and different ranges (now 200mV / 2V etc. instead of 600mV / 6V etc.) I did not recognize any other differences at the first glance.
Though my SDM3045x is silent, as it comes without a fan. I am wondering if I should add one now, as the SDM3055 does have one afaik.

tv84 · « **Reply #15 on:** January 09, 2022, 06:19:38 pm »

Quote from: Pinkus on January 09, 2022, 06:15:49 pm

I tried it for me and for you folks: it works without problems. My SDM3045x became a SDM3055x.

Post an image, please.

tautech · « **Reply #16 on:** January 09, 2022, 06:36:43 pm »

Quote from: Pinkus on January 09, 2022, 06:15:49 pm

Quote from: tv84 on December 31, 2021, 07:36:15 pm
Quote from: tautech on December 31, 2021, 07:18:45 pm
It's my suspicion it could be done.

OK, in that case, patch the original SDM3055X-E_2.01.01.12.ADS with the following 16 bytes.

Then it's ready to flash in a SDM3045X. As always, do it at your own risk.
Since Tautech assured me that there were ways to undo this (in the case of bricking my unit), I tried it for me and for you folks: it works without problems. My SDM3045x became a SDM3055x.
Beside the extra digit and different ranges (now 200mV / 2V etc. instead of 600mV / 6V etc.) I did not recognize any other differences at the first glance.
Though my SDM3045x is silent, as it comes without a fan. I am wondering if I should add one now, as the SDM3055 does have one afaik.

SDM3055X-E is the model it should be now, NOT SDM3055 !
Re the fan, at this time we do not know if the China only X-E model sports a fan. Only measurement stability checks can indicate if it might need one.

tautech · « **Reply #17 on:** January 09, 2022, 07:47:46 pm »

To those that might also be inspired to flash their 3045X...
Do at your own risk....

3045X don't have a precision divider and instead use SMD components to substitute the Caddock divider used in 3055 and 3065X therefore a flashed 3045X can never be a 3055 but instead the China only model SDM3055X-E.

Pics of the internal differences can be found linked in the POI list in the opening post here:
https://www.eevblog.com/forum/testgear/siglent-new-bench-dmm-sdm3055/

Kleinstein · « **Reply #18 on:** January 09, 2022, 07:56:29 pm »

As there are some HW differences, one should check the lower ranges, if they actually work correctly. A point that may fail could be the input impedance at around 2 V. A possible way to look at this would be to watch a low leakage 10 nF or so capacitor charge or discharge from some +-2 V. The input current will show as drift rate, that can be measured with the meter itself.

Pinkus · « **Reply #19 on:** January 09, 2022, 10:11:36 pm »

Quote from: tv84 on January 09, 2022, 06:19:38 pm

Quote from: Pinkus on January 09, 2022, 06:15:49 pm
I tried it for me and for you folks: it works without problems. My SDM3045x became a SDM3055x.

Post an image, please.

OK here are pictures. Keep in mind, I have not tested the unit yet, just made the conversion and looked through the menus.

tautech · « **Reply #20 on:** January 09, 2022, 11:03:28 pm »

Quote from: Pinkus on January 09, 2022, 10:11:36 pm

Quote from: tv84 on January 09, 2022, 06:19:38 pm
Quote from: Pinkus on January 09, 2022, 06:15:49 pm
I tried it for me and for you folks: it works without problems. My SDM3045x became a SDM3055x.

Post an image, please.
OK here are pictures. Keep in mind, I have not tested the unit yet, just made the conversion and looked through the menus.

Oh, that's interesting as it still reports it's a 3045X.

Maybe tv84 can have a deeper look into the FW ?
Yet you got the extra digit and the 2V range.

Press the Range button so we can see the selection of ranges now available.

Pinkus · « **Reply #21 on:** January 10, 2022, 12:00:57 am »

Quote from: tautech on January 09, 2022, 11:03:28 pm

Press the Range button so we can see the selection of ranges now available.

Sure: 200mV - 1000V

tv84 · « **Reply #22 on:** January 10, 2022, 09:39:09 am »

Quote from: tautech on January 09, 2022, 11:03:28 pm

Oh, that's interesting as it still reports it's a 3045X. Maybe tv84 can have a deeper look into the FW ?

Sure, it needs the .cfg of a true X-E. (remember the post I wrote about Performa01's SDS2504X+ designation...)

Can anybody access one? I haven't checked if it's in the FW package.

tautech · « **Reply #23 on:** January 10, 2022, 09:47:12 am »

Quote from: tv84 on January 10, 2022, 09:39:09 am

Can anybody access one? I haven't checked if it's in the FW package.

Nothing here amongst my goodies.

See what you can manage to conjure up tv84.

tv84 · « **Reply #24 on:** January 10, 2022, 09:50:59 am »

Quote from: tautech on January 10, 2022, 09:47:12 am

See what you can manage to conjure up tv84.

AFAIR, show me the contents of the NSP_system_info.xml file.


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