Siglent Bench DMMs SDM3065X, SDM3055 and SDM3045X

[tomud]

On my side it is now 2 years without a sign 

May @Tautech has a better channel

In fact, I'm even willing to pay someone to kick the ass of the manager responsible for this product  I wonder if Teledyne T3DMM6-5 has the same problems Maybe you need to write an e-mail to LeCroy to fix bugs in the software 

[hpw]

In fact, I'm even willing to pay someone to kick the ass of the manager responsible for this product  I wonder if Teledyne T3DMM6-5 has the same problems Maybe you need to write an e-mail to LeCroy to fix bugs in the software 

I did this for the SDG2K bug(s), what not changed any thing as no reply received.

May we have to understand the China mentality ... as no sign as not like to loose the here face as you will never get the answer as "NO"

[tautech]

From another thread.....

My 3045 locked up again—simply measuring dc voltage and it locked in ‘overload’ power off and on resolved. Looking forward to some better firmware.

What version are you on ?

Latest is Version： V5.01.01.07R1
Please confirm boot settings ? Default or Last ?

For the last year or so every unit leaves here set to Last and as yet not been contacted by customers with boot problems. Something you might like to also try as if we can find settings that lead to freezes we have better info to give the SW engineers to provide a fix.

I have not changed the boot settings. It freezes up randomly while measuring dc voltage. I have 2 2045, only 1 freezes. Maybe I can get a replacement. Bought on amazon oct 24, 2022. I suspect its not a firmware issue.

Why, how ?
You haven't said what firmware version is installed in the one that freezes or if both your units are on the same version. 
Did you buy them both together ?
Have you checked the Sys Info page to see if they share the same HW build ?

Now, would you consider checking these things and reporting findings and while you're at it change both units boot settings to Last as I suggested earlier just to see if exercising the flash memory storing last used settings is better than just returning a Default boot.
You can access the Power On settings: Utility>Store/Recall>Power On toggles Default or Last, set to Last and monitor for freeze frequency better or worse than Default please.

[tautech]

From another thread:

My 3045 locked up again—simply measuring dc voltage and it locked in ‘overload’ power off and on resolved. Looking forward to some better firmware.

What version are you on ?

Latest is Version： V5.01.01.07R1
Please confirm boot settings ? Default or Last ?

For the last year or so every unit leaves here set to Last and as yet not been contacted by customers with boot problems. Something you might like to also try as if we can find settings that lead to freezes we have better info to give the SW engineers to provide a fix.

Thank you for looking into this.

I didn't, I live eat and breathe this stuff.

I did not change the boot setting and it was set to factory.

Yes, they come like this....that is the point, we change things to see if we can isolate the fault.

I changed it to last.

 

I don't know what that setting does, but from your comment, I am interpreting that as a suggestion to boot from last to reduce problems.

Boot to Last just does exactly that, boots to last used settings whereas Factory/default boots to VDC with autorange settings.

I note that it has booted without problems, and froze up later, but I am willing to try and see if that helps. Since the problem is intermittent, not sure of a way of knowing that its fixed...

Twice I have asked which firmware version you have installed and twice you have ignored this question.
How can the SW engineers even know which version you are using to start trying to replicate your issue ? 

I strongly suggest you supply this info and start taking notes of what settings are in use when you get a freeze.
And, BTW, are you using the power button to turn the meter to OFF or switching the mains ?

[MarkKn]

I have the latest version of firmware. It locks into overload when measuring dc voltage. It is intermittent—I figure its a hardware issue and they will either give me a new one or tell me there is nothing wrong with it. I use the meter button to turn on and off. I will look at the hardware versions tomorrow. The 3045 that does not lock up has the current version of firmware.

[tautech]

I have the latest version of firmware. It locks into overload when measuring dc voltage. It is intermittent—I figure its a hardware issue and they will either give me a new one or tell me there is nothing wrong with it. I use the meter button to turn on and off. I will look at the hardware versions tomorrow. The 3045 that does not lock up has the current version of firmware.

Good, thanks.
And you imply the unit that does not freeze has another firmware version, that's not clear and maybe you can confirm please.

What's in my mind at this time is to either reinstall the latest firmware in the unit that randomly locks or we run our USB recovery package as that may do something different to the OS than just installing the firmware.
If you want to attempt to crack this send me a PM with your email and we'll work with the recovery package with you.

[james38]

There is a new Firmware available for the SDM3055

https://www.siglenteu.com/service-and-support/firmware-software/digital-multimeters/#sdm3055-series

2023/4/25 1.01.01.27R2
1. Add and optimize the manual calibration function

2. Solve the socket communication in multiple cycles of
    open/close, may not respond to the problem

3. Fix the problem that the "READ" command does not match
    the description in the programming manual

4. Fix the key test screen no prompt

5. Optimize the connectivity test buzzer response speed issues

[TheDefpom]

Update is for 3065X too, I noticed mention of user calibration in the update so thought I had better take a look, they have changed to a ONSCREEN calibration system !

User calibration now looks MUCH easier, well done Siglent for revisiting the user calibration method and making it better!

[tautech]

Would you mind updating your Cal webpage Scott and adding a link to the firmware page where any of the 3 models can be selected ?
https://int.siglent.com/download/firmwares/?CateIdss=5

TIA

[TheDefpom]

I normally use this page, as it is easier to identify what is going on: https://siglentna.com/service-and-support/firmware-software/

And specifically for the SDM series: https://siglentna.com/service-and-support/firmware-software/digital-multimeters/


I might do a video about using the new calibration method, I have my SDM3065X and Advantest 8.5 digit multimeter warming up right now :-)

[TheDefpom]

I have recorded some footage showing how to use the new user calibration method, Siglent implemented my suggestion and it certainly is much better than the previous method which I did videos about.

You can even choose to only recalibrate one range if you wish !

Video will be out soon.

[bateau020]

For the 3055, the dual measurement bug (making it hang, mentioned above) seems solved now.

[haydar]

Yes, I can confirm, on my SDM3055 the DUAL Measurement Bug is solved with the new firmware.

[TheDefpom]

New user calibration video for V3.01.01.12R1 is done:

[ComradeXavier]

I'm particularly pleased to see 3.01.01.12R1 includes:

5. Optimize the connectivity test buzzer response speed issues

[Inovet]

Wow, thank you all for the new information about the SDM3055.

[tautech]

I'm particularly pleased to see 3.01.01.12R1 includes:

5. Optimize the connectivity test buzzer response speed issues

We have some stock of all models and all require tests before and after to quantify the improvement....something like how Joe Smith checks DMM continuity, with a varyied pulse width and fastest frequency it can detect before becoming a continuous beep. Maybe they are now up to being able to play Van Halen. 
Done with an AWG. 

Sometime in the next day or so....watch this space.

[Peter_O]

Had the idea of just taking an audio recording of probe contact tick noise and beep before and after the upgrade.
But as you're on the scientific path already, ...

[tautech]

Had the idea of just taking an audio recording of probe contact tick noise and beep before and after the upgrade.
But as you're on the scientific path already, ...

Results coming soon....just writing a report for the Siglent DMM team.
Let me just say they won't play Van Halen. 

[tautech]

And here is a summary of the Continuity performance gains from the new firmware:

SDM3045X
2x performance gain to 12 Hz fastest frequency reliably detected without skipping. (50% DC squarewave)
65ms Min Pulse width reliably detected without skipping. (2 Hz rate)

SDM3055
Little to no improvement.
Max freq = 7 Hz
Min Pulse = 50ms = 10% DC

SDM3065X
Here is where the largest gains have been with a 6 fold improvement in Continuity performance. 
Max freq = 13 Hz
Min Pulse = 35ms = 7% DC

Test were done mimicking Joe Smith's Continuity tests on DMM's:


I have asked for further improvement to the limits of the HW......

[TheDefpom]

I also tested my 3065X using Ian Johnston's DMM tester, I got reliable continuity beeps at 30ms.

[Kleinstein]

Getting a reponse time in the 30-60 ms range may mean that the main ADC is used.  In this case the speed / integration time setting could have an effect and a somewhat faster response should be possible.

[Peter_O]

The upgrade has run well.
Non-scientifically it seems to be a improvement indeed.
Impressions attached before and after.

[ComradeXavier]

SDM3065X
Here is where the largest gains have been with a 6 fold improvement in Continuity performance. 
Max freq = 13 Hz
Min Pulse = 35ms = 7% DC

I installed the update on my SDM3065X. I didn't try to quantify the difference, but I'd believe 6x. Poking around a bit, the continuity mode now seems to work fast enough to keep up. Before, I had to remember to wait a moment for the meter to catch up with the probes. It's not the most critical bug fixed in the years I've had this meter, but day-to-day it'll probably be the most satisfying improvement.

[Mortymore]

About SDM3055, quick check after firmware update:

- still 220.000 count, not 240.000
- when in dual display mode, still can't be able to select both frequency and period
+ when in dual display mode, auto-ranging with dual display (1:V.DC, 2:V.AC) is OK going from 220mV.DC (219.999mV) range to the expected 2V.DC (0.22000V) , when previously jumped to 1000V.DC (000.220V) range
+ when in Temperature, now the 3055 also has the "custom sensor" option (something to learn how to use, now)

Still have to check other issues, for example, the freeze when in dual display mode 1:I.AC, 2:I.DC

Keep up the good work Siglent, "This is the way"