Siglent Bench DMMs SDM3065X, SDM3055 and SDM3045X

[OoVoO]

Hello everyone!

I plan to purchase the SDM3055 with the X bumper, but judging by the mjlorton review [https://youtu.be/WxnSRGE82cA?t=335] the dialing mode (diode mode witch beeper) is completely unacceptable, actually when reading the history of firmware changes I did not find that it was fixed. Actually the question is two questions:

1) On with the latest firmware, the dialer mode was made better or it remained at an unacceptable level. If this has already been fixed, then maybe someone can give a link to the video as it is now with the reaction of sound to the sound.
2) On the site https://www.siglent.com/products-overview/sdm3055x-e/#navs there was a mention of the X-E model in the documentation and photographs, is the same observed X-E is this a new model?

Sorry for my English 

[tautech]

I just measured my 3055 and many dimensions are far from those in the documentation.
If you want ? I have it in mm but not inches

Yes please - what are the mm dimensions?  Thx

SDM3055 measurements minus folding bail handle below. Includes current version bumpers with horns.

293mm D x 223mm W x 110mm H
11 1/2"       8 3/4"          4 1/4"

Width with bail handle 260mm 10 1/4" (easily removable)

[tautech]

Hello everyone!

I plan to purchase the SDM3055 with the X bumper, but judging by the mjlorton review [https://youtu.be/WxnSRGE82cA?t=335] the dialing mode (diode mode witch beeper) is completely unacceptable, actually when reading the history of firmware changes I did not find that it was fixed. Actually the question is two questions:

1) On with the latest firmware, the dialer mode was made better or it remained at an unacceptable level. If this has already been fixed, then maybe someone can give a link to the video as it is now with the reaction of sound to the sound.
2) On the site https://www.siglent.com/products-overview/sdm3055x-e/#navs there was a mention of the X-E model in the documentation and photographs, is the same observed X-E is this a new model?

Sorry for my English 

Welcome to the forum.

1) At this time I think only SDM3065X has the buzzer volume adjustment feature however as the 3 SDM models share an almost identical UI I would expect provision to adjust buzzer volume in a coming SDS3055 FW.
All units I have used on the bench the buzzer is now fine and if anything it could be louder.
Buzzer volume adjustment feature added in Version 1.01.01.20R2

2) X-E is a China only model we do not see in the west. It could be the same as SDM3045X however I do not know.

It is better to work with the English versions of Siglent websites:
https://int.siglent.com/
https://siglentna.com/
https://www.siglenteu.com/

[OoVoO]

Hello everyone!

I plan to purchase the SDM3055 with the X bumper, but judging by the mjlorton review [https://youtu.be/WxnSRGE82cA?t=335] the dialing mode (diode mode witch beeper) is completely unacceptable, actually when reading the history of firmware changes I did not find that it was fixed. Actually the question is two questions:

1) On with the latest firmware, the dialer mode was made better or it remained at an unacceptable level. If this has already been fixed, then maybe someone can give a link to the video as it is now with the reaction of sound to the sound.
2) On the site https://www.siglent.com/products-overview/sdm3055x-e/#navs there was a mention of the X-E model in the documentation and photographs, is the same observed X-E is this a new model?

Sorry for my English 

Welcome to the forum.

1) At this time I think only SDM3065X has the buzzer volume adjustment feature however as the 3 SDM models share an almost identical UI I would expect provision to adjust buzzer volume in a coming SDS3055 FW.
All units I have used on the bench the buzzer is now fine and if anything it could be louder.

2) X-E is a China only model we do not see in the west. It could be the same as SDM3045X however I do not know.

It is better to work with the English versions of Siglent websites:
https://int.siglent.com/
https://siglentna.com/
https://www.siglenteu.com/

Thank you for your greetings!

Apparently (google) translator translates, I'm interested in the responsiveness of the audio signal after closing the contacts of the probes. The sound appears with a delay. I wanted to know if this was fixed?

[tautech]

SDM30565X continuity and diode tests with the current firmware of that time....a couple of years ago.
https://youtu.be/k6HE8qV3CA4?list=PL2z3V9RkHQE0ntjTgr_Nkpv4XRaH_iT2o&t=5853

[edigi]

SDM30565X continuity and diode tests with the current firmware of that time....a couple of years ago.
https://youtu.be/k6HE8qV3CA4?list=PL2z3V9RkHQE0ntjTgr_Nkpv4XRaH_iT2o&t=5853

Unfortunately continuity test is pretty much the same (very slow) even with the latest firmware (some weeks old) with SDM3065X.
If that's important then a Brymen BM869s is something to be considered. Comparison:
https://youtu.be/K-4L2JarVxA?t=134
At 20 Hz:
https://youtu.be/K-4L2JarVxA?t=294
Like it's mentioned in the video that's good for sliding the probes across pins to find out what is connected to where.
Even a very cheap Aneng 8008 does better in this respect than the SDM3065X.

So while precision may be a strong point of the SDM3065X, continuity test is not and it's yet to be seen an improvement for this.

[klausES]

The volume of the buzzer can now be selected in three levels.
The gradations are well chosen for me, if it is quiet in the area is enough for me (3055) e.g. the smallest.

Again and again I can only wonder about the sense or nonsense of these tests of "trembling" with the test probes.
I don't intend to do 10 measuring points per second by hand and I don't want to do it either. 
Maybe it's due to the age, but for me the beeper of the 3055 with the current firmware reacts quickly enough in practice with fractions of a second.

[klausES]

Electro fan,
are the details of the mass of Tautech enough for you ?
If you also have the dimensions of the pure housing without the bumpers and handle then get in touch.

[Electro Fan]

Hi Klaus, I've noticed there seems to be some different measurements out there but it's no big deal.  Thx

[Electro Fan]

I've been thinking about a bench DMM and so far the SDM3055 looks like a strong contender.  Up from that might be the 3065X, or with one more step the Keithely 6500.  The better voltage references in the 3065 and 6500 make them both appealing, and all the software programmability and the display capabilities make the 6500 very appealing.  Kind of a matter of how much is enough in terms of accuracy and functionality. 

The price on the 3055 definitely makes it attractive but I'd like to make sure it checks off all the basics, and I'm having a hard time figuring out what to expect from it on resistance measurements.  In reading around I saw a couple Amazon reviews below.  While they are positive on the 3055 overall these two reviews get at what I've been trying to figure out:  how useful the 5 1/2 digits really are for resistance measurements (2 or 4 wire)?  I'm thinking the first reviewer might have some misunderstanding (or maybe not). It sounds from the second reviewer that a resistance measurement is possible to single digit milliohms.  If so it means the 3055 can read down to 1 milliohm (.001), but not 100 micro-ohms (.0001)?  Is it correct that the 3055 can display 0.001 on the 200 Ohm setting and that's as low as it will go on resistance?


https://www.amazon.com/Siglent-Technologies-SDM3055-Digital-Multimeter/dp/B00QT3RTV0/ref=sr_1_1?dchild=1&keywords=siglent+3055&qid=1587515528&sr=8-1#customerReviews


attaboy
1.0 out of 5 stars Sense Terminals? Really? Why Even Bother?
Reviewed in the United States on March 3, 2020
Verified Purchase
I bought this 5-1/2 digit DVM for measuring current shunts (pcb trace). I love the screen, and the build quality is Excellent. The one star is for hobbling the resistance measuring function, to a point where it is almost useless for precision measurement of sub-Ohm measurement. Micro amps and volts, but as for ohms, it has a Big Fail. So they go to the trouble of putting sense terminals on this unit, and in resistance, there is a Glaring Four Zeros left of the decimal point. What a waste. Nice looking Kelvin terminals .. good for down to 0.01 ohms. So I bought a 3-1/2 digit 2 ohm meter for about $100 .. that works Very well. For sure, I do recommend Siglent, and will be ordering the 3.2Gh SA, but jumping up to a 7-1/2 digit unit to get accurate sub-ohm resistance measurements is out of my range$, or needs. Maybe there is a firmware update to fix this, or a hack on EEVblog. I do Highly Recommend this unit, except for the abysmal sub-0hm resistance capability. Cheers!


PietroMoopy
5.0 out of 5 stars Excellent.
Reviewed in the United States on June 22, 2019
Verified Purchase
Great meter great price. Have had for 3 months now and there has been no drift so far. The supplied probes were terrible at first simply because they were either to rough or had a very thin layer of something that was preventing them from making solid contact, I saw some YouTubers that had this issue as well. Anyway I took 7000grit sand paper and sanded the probe leads and since then they have been working with no issues at all The meter came with the latest firmware installed and has been bang on accurate in all ranges and well within spec. I have a Keithley DMM6500 and while it is the superior meter I still love using the Siglent, it gets used everyday for work and has never given me a problem.

Edit Update:
I have had this meter for 9 months now. Its been great overall, is very well rounded and is pretty bang on accurate still. WELL within specification. Updated pictures with precision 10v and 5v references. Also what the Keithley DMM6500 and HP 3478A read. The main drawback to the Siglent is resistance. The resistance is accurate, but the lowest range is 200 ohm, which makes single digit milli-ohm the least significant digit. In my experience it has been accurate down to a single milli-ohm, but over time that reading will become more and more unreliable and if I did not have the Keithley to verify the reading, I would not trust it at all. They really dropped the ball on that one, other then that it is a fantastic meter for the price. There has been a firmware update which is version 1.01.01.20R2 which fixed bugs/glitches and improved some UI elements. The fan is the loudest of all instruments in my lab, I do want to replace it but do not want to void warranty just yet. I mean I can still hear the SDM3055 fan when I have my de-humidifier or AC on

[OoVoO]

Hello everyone!

I plan to purchase the SDM3055 with the X bumper, but judging by the mjlorton review [https://youtu.be/WxnSRGE82cA?t=335] the dialing mode (diode mode witch beeper) is completely unacceptable, actually when reading the history of firmware changes I did not find that it was fixed. Actually the question is two questions:

1) On with the latest firmware, the dialer mode was made better or it remained at an unacceptable level. If this has already been fixed, then maybe someone can give a link to the video as it is now with the reaction of sound to the sound.
2) On the site https://www.siglent.com/products-overview/sdm3055x-e/#navs there was a mention of the X-E model in the documentation and photographs, is the same observed X-E is this a new model?

Sorry for my English 

Welcome to the forum.

1) At this time I think only SDM3065X has the buzzer volume adjustment feature however as the 3 SDM models share an almost identical UI I would expect provision to adjust buzzer volume in a coming SDS3055 FW.
All units I have used on the bench the buzzer is now fine and if anything it could be louder.
Buzzer volume adjustment feature added in Version 1.01.01.20R2

2) X-E is a China only model we do not see in the west. It could be the same as SDM3045X however I do not know.

It is better to work with the English versions of Siglent websites:
https://int.siglent.com/
https://siglentna.com/
https://www.siglenteu.com/

Today I ordered a 3055 device, thanks to tautech, he gave a useful link unfortunately the video confirms my concerns about the lack of siglent in the implementation of this function, this is a shame for such a device - I hope this Siglent will be corrected. I also noticed that the model for the Chinese market SDM3055X-E works like SDM3055X and, in comparison with SDM3055, the diode ringing mode can be used to select the diode drop voltage, i.e. it has 2 ranges 0-2V 1ma and 2-4V 1ma, and SDM3055 has a range of 0 -2V 1ma and 4V 100ua which does not allow checking blue and white diodes in which a drop of 2-3. The model SDM3055X-E is more attractive in this regard, I hope Siglent will fix this defect in the SDM3055 since having one more device for diode ringing is not very good when 3055 is at hand.

[klausES]

Where do these voltage and current values for diode measurement come from ?
Documentation or measured in real terms ?

Should this also apply to the latest current firmware or a older version ?

I have not yet been able to find the Siglent that has produced documentation specifically for firmware in which these points have been described in such detail.

[tautech]

Where do these voltage and current values for diode measurement come from ?
Documentation or measured in real terms ?

Should this also apply to the latest current firmware or a older version ?

I have not yet been able to find the Siglent that has produced documentation specifically for firmware in which these points have been described in such detail.

Datasheet P4 DC values.

[klausES]

Do you have a link for me ?

[tautech]

Do you have a link for me ?

SDM3055 datasheet
https://www.siglenteu.com/download/2554/
http://siglentna.com/wp-content/uploads/dlm_uploads/2017/10/SDM3055_DataSheet_DS06035-E03F.pdf
https://int.siglent.com/upload_file/user/SDM3055/SDM3055_DataSheet_DS06035-E03E.pdf

[klausES]

The 0-2V and 2-4V only refer to Accuracy specifications.

Above the 3055.
Since the changes to the diode have not been taken into account (no longer fixed 2V but 0-4V in the newer firmware).

Below 3065
(The documentary is probably newer than the 3055 ...)

[tautech]

The price on the 3055 definitely makes it attractive but I'd like to make sure it checks off all the basics, and I'm having a hard time figuring out what to expect from it on resistance measurements. 

For sub Ohm measurements either in Auto range or the minimum 200 Ohm range it could certainly be improved with shifting the decimal point to the left so to allow for more digits below the decimal point.
The 200 Ohm range needs be lowered to 100 Ohms where 99+ Ohms would be shown as Overload.
Latest current firmware.

Here a 4W measurement of a 5W 0.2 Ohm current sense resistor in the 200 Ohm range:

[tautech]

The 0-2V and 2-4V only refer to Accuracy specifications.

Above the 3055.
Since the changes to the diode have not been taken into account (no longer fixed 2V but 0-4V in the newer firmware).

Below 3065
(The documentary is probably newer than the 3055 ...)

Please refer to the top of page 4 where the columns of Range and Test Current or Voltage are specified.

[OoVoO]

SDM3055X-E for china Moded test Diode as SDM3045X, SDM3065X

https://www.siglent.com/u_file/download/19_09_19/4a9496f839.pdf

These are the main functions of the diodes which are not enough in 3055 as well as the quick sound of a short circuit in the continuity mode of the circuit.

[klausES]

Have now looked at all three 3055 Datasheet from the links (thought maybe different ages?)
in none is the change for diode of the now adjustable threshold 0-4V mentioned since the last firmware.

This is mentioned in the Datasheet of the 3065 (0-4V).
Probably only because the paper of the 3065 is more current than that of the 3055 ?

[klausES]

...These are the main functions of the diodes which are not enough in 3055 as well as the quick sound of a short circuit in the continuity mode of the circuit.

I don't understand the intent of this sentence ?

[OoVoO]

...These are the main functions of the diodes which are not enough in 3055 as well as the quick sound of a short circuit in the continuity mode of the circuit.

I don't understand the intent of this sentence ?

This is what I miss in SDM3055
1) test all diodes up to 4v blue and white
2) quickly sound a short circuit alarm.

Sorry for my english (goolge)

[OoVoO]

Have now looked at all three 3055 Datasheet from the links (thought maybe different ages?)
in none is the change for diode of the now adjustable threshold 0-4V mentioned since the last firmware.

This is mentioned in the Datasheet of the 3065 (0-4V).
Probably only because the paper of the 3065 is more current than that of the 3055 ?

Think that the whole problem is in the current of calls. at 2-4V current 0.1ma and at 3065 at 2-4V current 1ma.

[tautech]

Sorry no blue diodes

[klausES]

Only now understood that you meant Led (thinks about whether white, blue diodes should mean something special, maybe any zener diodes). 

If I understood it straight away...  yes, the 3055 can also do white and blue LEDs.
I have used it many times.