EEVblog Electronics Community Forum

Products => Test Equipment => Topic started by: tautech on September 19, 2014, 10:53:40 am

Title: Siglent Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: tautech on September 19, 2014, 10:53:40 am
3 Siglent Bench DMM's:

SDM3045X 4 1/2 digit (60,000 count)
SDM3055   5 1/2 digit (240,000 count)
SDM3065X 6 1/2 digit (2,200,000 count)

4.3" colour LCD dual measurement display.
(Changed GUI from FW 16R2)(SDM3055)
(https://www.eevblog.com/forum/testgear/siglent-new-bench-dmm-sdm3055/?action=dlattach;attach=212062)

The full family and specs:
https://int.siglent.com/products/digital_multimeters/ (https://int.siglent.com/products/digital_multimeters/)
https://siglentna.com/digital-multimeters/ (https://siglentna.com/digital-multimeters/)

SDM3065X Released April 2017
SDM3045X New 60000 count 4 1/2 digit model in this series: (released Aug 2016)

Teardown:
https://www.eevblog.com/forum/blog/eevblog-829-siglent-sdm3055-bench-multimeter-teardown/ (https://www.eevblog.com/forum/blog/eevblog-829-siglent-sdm3055-bench-multimeter-teardown/)

FW & SW updates:
https://siglentna.com/service-and-support/firmware-software/digital-multimeters/ (https://siglentna.com/service-and-support/firmware-software/digital-multimeters/)


Recently released option for 3055 and 3065 models in the SDM3*** family is a 16 ch scanner card but it's only for factory installation unfortunately.  :(
(http://www.siglentamerica.com/USA_website_2014/Picture/Product/SDM3065X/Scanner.png)


(http://www.siglentamerica.com/USA_website_2014/Picture/Product/SDM3065Xserial/SDM3065X.png)
6 1/2 Digit Benchtop DMM: SDM3065X

https://www.youtube.com/watch?v=k6HE8qV3CA4 (https://www.youtube.com/watch?v=k6HE8qV3CA4)

https://www.eevblog.com/forum/testgear/siglent-new-bench-dmm-sdm3055/msg1016306/#msg1016306 (https://www.eevblog.com/forum/testgear/siglent-new-bench-dmm-sdm3055/msg1016306/#msg1016306)

http://siglentamerica.com/prodcut-detailxx.aspx?id=4826&tid=37&T=2 (http://siglentamerica.com/prodcut-detailxx.aspx?id=4826&tid=37&T=2)

Siglent video:
https://youtu.be/pijpdKbq_O4 (https://youtu.be/pijpdKbq_O4)

Deeper investigations:
https://www.eevblog.com/forum/testgear/hacking-the-siglent-sdm3055/ (https://www.eevblog.com/forum/testgear/hacking-the-siglent-sdm3055/)


Early/first SDM3055 releases were as the image below then later versions had X series bumpers/horns added.
The SDM3055 model name was unchanged and SDM3045X and 3065X were released later.
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: Orange on September 19, 2014, 04:55:40 pm
I have my doubts about the photo, i think it is an very good animated picture straight from an CAD system, Why ?

Look at the back side, and zoom in on the BNC connectors, it's missing a centerpin, Siglent is faking equipment pictures.
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: Hydrawerk on September 19, 2014, 06:01:29 pm
It seems that this is their very first multimeter ever released. Then I do not want it. It has a color LCD, so it must be full of bugs.
I would trust GW Instek multimeters instead. Yes, they make some so-so scopes, but they still work as promised. Almost.
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: Wytnucls on September 19, 2014, 08:08:01 pm
Looks like Applent is also getting on the bench DMM bandwagon. A lukewarm attempt with a 4 1/2 digit meter, using their LCR meter case and eye candy TFT touch screen. They left out the cap measurement, perhaps to avoid denting their LCR meter sales.

http://www.applent.com/products/detail.aspx?familyid=&model=AT186 (http://www.applent.com/products/detail.aspx?familyid=&model=AT186)

(http://www.applent.com/app_file/img/Products/180.00.png)
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: tautech on September 26, 2014, 07:47:32 pm
The datasheet is now available for download from Siglent:
http://www.siglent.com/DataSheet/EN/SDM3055_DataSheet_EN.pdf (http://www.siglent.com/DataSheet/EN/SDM3055_DataSheet_EN.pdf)
http://www.siglentamerica.com/USA_website_2014/Documents/DataSheet/SDM3055x_DataSheet_DS06035-E02B.pdf (http://www.siglentamerica.com/USA_website_2014/Documents/DataSheet/SDM3055x_DataSheet_DS06035-E02B.pdf)
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: Wytnucls on September 26, 2014, 09:06:17 pm
Thanks, filled in the blanks on the bench meter spreadsheet. To be published soon.
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: Siglent on September 30, 2014, 06:48:50 am
siglent new official website has been on-line, for more information, please visit http://www.siglent.com/ENs/pdxx.aspx?id=176&T=2&tid=37 (http://www.siglent.com/ENs/pdxx.aspx?id=176&T=2&tid=37)
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: EEVblog on September 30, 2014, 07:08:20 am
The datasheet is now available for download from Siglent:
http://www.siglent.com/DataSheet/EN/SDM3055_DataSheet_EN.pdf (http://www.siglent.com/DataSheet/EN/SDM3055_DataSheet_EN.pdf)

Wow, looks like they completely ripped off the Agilent UI
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: nctnico on September 30, 2014, 03:38:22 pm
siglent new official website has been on-line, for more information, please visit http://www.siglent.com/ENs/pdxx.aspx?id=176&T=2&tid=37 (http://www.siglent.com/ENs/pdxx.aspx?id=176&T=2&tid=37)
The website looks completely wrong with Firefox version 32.
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: smatjaz on March 19, 2015, 07:36:43 pm
Hello.
I tested the operation of the instrument SDM3055- remote connection via LAN. An error has occurred when setting the LAN parameters. IP number is stored in order, Subnet mask is not saved. Each time the instrument is turned off and turned on, the Subnet mask setting is not saved.

Is this a bug in the software?

Greetings M.
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: tautech on March 19, 2015, 07:45:05 pm
Welcome to the forum.

Better you place this post in this thread:
https://www.eevblog.com/forum/testgear/siglent-technical-support-join-in-eevblog/ (https://www.eevblog.com/forum/testgear/siglent-technical-support-join-in-eevblog/)

Siglent tech support will be online later today to help.

Sorry I have only tried the EasyDMM software with USB and that works great.
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: Siglent on March 20, 2015, 05:47:39 am
Hello.
I tested the operation of the instrument SDM3055- remote connection via LAN. An error has occurred when setting the LAN parameters. IP number is stored in order, Subnet mask is not saved. Each time the instrument is turned off and turned on, the Subnet mask setting is not saved.

Is this a bug in the software?

Greetings M.
this is a known problem, we have fixed in the coming firmware (11R2), but we will release it in about two weeks.
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: zaoka on March 22, 2015, 05:31:04 am
this is a known problem, we have fixed in the coming firmware (11R2), but we will release it in about two weeks.


Is there a way to increase Diode voltage limit to 3.0V instead of 2.0V?

Title: Re: Siglent NEW Bench DMM SDM3055
Post by: zaoka on March 22, 2015, 05:36:30 am
Also sampling time for DC, can you add 5 times per second as well?
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: Siglent on March 25, 2015, 09:24:52 am
Also sampling time for DC, can you add 5 times per second as well?
Thanks for your suggestion. but can you explain why you need to add this feature?
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: tautech on March 26, 2015, 09:44:19 am
The datasheet is now available for download from Siglent:
http://www.siglent.com/DataSheet/EN/SDM3055_DataSheet_EN.pdf (http://www.siglent.com/DataSheet/EN/SDM3055_DataSheet_EN.pdf)

Wow, looks like they completely ripped off the Agilent UI
Been wondering for some time about that.  :-//

Inspired by this post a couple of weeks ago: https://www.eevblog.com/forum/testgear/keysight's-new-34465a-(6-5-digit)-and-34470a-(7-5-digit)-bench-multimeters/msg626032/#msg626032 (https://www.eevblog.com/forum/testgear/keysight's-new-34465a-(6-5-digit)-and-34470a-(7-5-digit)-bench-multimeters/msg626032/#msg626032)

I thought I'd better take a deeper look just in case the Agilent was a rebrand.  :-DD
SDM3055
(https://www.eevblog.com/forum/testgear/siglent-new-bench-dmm-sdm3055/?action=dlattach;attach=143768)

Wow I thought, they share the same Lattice chip, but no they are different beasts.
White silkscreen indicates where the sheilding cover (left) resides, held by a single screw.
Omron relays and just right a SIL Caddock resistor network.
Note the gold guard traces.

(https://www.eevblog.com/forum/testgear/siglent-new-bench-dmm-sdm3055/?action=dlattach;attach=143770)

Mains transformer is sheilded from the main PCB and the PSU is a linear type, rectification and smoothing on the main PCB, TO-220 7805 regulator
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: DJ on March 27, 2015, 08:07:30 pm
I was on the fence between the SDM3055 and the Agilent 6.5/7.5 DMM's.

Glad I did not jump the gun one way or the other. A good bench DMM is an essential piece of kit, whose readings must be beyond question. It forms a core of a lab.

Other instruments may slide with less absolute accuracy. An AWG, for example. Typically not a reference instrument,  do I care if it wanders over time or is not absolutely accurate?  Probably not. I have other equipment which can verify amplitude and frequency accuracy.

The instruments used to verify others should be 10x better.

So I've chosen the Agilent 6.5 digit, probably the 34465.

One the other hand, Siglent got the nod for the SDG5162.


This might serve as basis for a video, " Where to spend money where it counts in your lab"
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: Muttley Snickers on March 27, 2015, 10:28:44 pm
A very nice choice DJ, but as you have pointed out in your case the requirement was for an accurate stable meter that you could trust every time in the lab, in no way am I comparing the Siglent to the Agilent, the Agilent is leaps and bound's ahead.

In my case it's reliability, practicality and functionality, particularly with the logging feature's, we have in the past been using either Fluke 189's or Agilent U1272A's on a variety of sites generally to monitor feeds, contacts, sensors and temperature on varied machinery.

We seem to get called in when the machinery supplier's and the site electrician's start blaming each other and butting heads where neither are equiped to find a solution. The problem we have with this scenario is that we require a UPS, power supply and then the meter and I'm not a big fan of leaving a fluke on any site for long term as we have found in the past that they have a habit of growing legs and wandering off.

We also have at times simply put everything in a locked cabinet, big battery and a power supply for stand alone logging independant from mains supply, pretty pointless having an extended logging or capture feature on any meter if you cant remotely power it or disable the Auto Power Off for longer terms.

Anyway, for all you other people following, here's a good project for you to do, go and see what your bench logging meter does when powered from a UPS and the mains is removed, please post you results regardless of the brand of meter.

I'm still on the fence, dont need super accuracy but do want better than ball park, I'd rather two meter's covering a few bases over the same time period if required, Real time clocked events are a must and if the meter is not equiped then the trigger out feature would be used as an input to a RTC data logger with a time stamp.

If it was only for the lab and nothing else, I would follow what DJ has done... :-+


Muttley

Title: Re: Siglent NEW Bench DMM SDM3055
Post by: zaoka on March 28, 2015, 02:19:02 am
Also sampling time for DC, can you add 5 times per second as well?
Thanks for your suggestion. but can you explain why you need to add this feature?

When you use meter for troubleshooting and do pin-point measurements, probes are very sensitive if moved and meter captures those changes... reading changes fast...

5 readings per second is the best for this...

Keep in mind that not everybody uses meter for the same purpose.
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: tautech on March 28, 2015, 06:30:42 am
Also sampling time for DC, can you add 5 times per second as well?
Thanks for your suggestion. but can you explain why you need to add this feature?

When you use meter for troubleshooting and do pin-point measurements, probes are very sensitive if moved and meter captures those changes... reading changes fast...

5 readings per second is the best for this...

Keep in mind that not everybody uses meter for the same purpose.

P 11 of the Manual describes the selection of measurement speeds. Three speeds are available.
They are 5/sec, 50/sec and 150/sec. These options are available in: DCV, ACV, DCI, ACI and 2 & 4 wire resistance settings.
When any of these measurement types are selected, the 2nd softkey (from left) named "Speed" allows selection of any of these 3 available measurement speeds.

Title: Re: Siglent NEW Bench DMM SDM3055
Post by: Muttley Snickers on March 30, 2015, 12:20:16 pm
Does anybody know what the available screen colour's are ?

So far I've seen navy blue and black, dont want to clash with my yakka overalls, nothing in the manual about it except for testing the display.


Muttley

PS: Anyone else posting from a TV finding that after you post the spelling turn's to shit, you then go back fix a typo, re-post then there's another word up the shit. This is my forth edit just on the above paragraph, it's driving be bonker's and I dont need a TV's assistance to miss spell word's, I'm highly skilled at that.
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: tautech on March 30, 2015, 07:49:01 pm
Oh Muttley, sorry about the overalls, they will have to go.  :-DD

There is no other screen options available that I could find, the surrounds are Grey, display background Navy blue and numbers, bar graphs etc are Yellow, not the Orange as seen on images on Siglent sites. Banana Yellow is my best description of the colour.
Other UI colours are white and light blue as seen on the website images

The yellow is very easy to see at a glance(when probing) and from good distances if monitoring a measurement. I guess Siglent have changed the colour from their early documentation for visibility reasons.
http://www.siglentamerica.com/pdxx.aspx?id=176&T=2&tid=37 (http://www.siglentamerica.com/pdxx.aspx?id=176&T=2&tid=37)

The second screen image from the bottom is the UI that one uses most often, except this one has the Dual measurement activated.

Keep in mind this is a reasonably new product, there is more FW due very shortly (Siglent posted this is so) and options of more enhancements is up to us to identify them and lobby Siglent for changes or more features.

Sorry Muttley, you'll just have to get a fashion consultant so you don't clash with your TE.  ;D
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: Muttley Snickers on March 30, 2015, 11:47:08 pm
Bugger tautech,

I dont want to look like a dummy.... :-DD
(https://www.eevblog.com/forum/testgear/siglent-new-bench-dmm-sdm3055/?action=dlattach;attach=144466;image)


This picture was to good to leave without some further enhancement, so here it is... :palm:

Mo: "Your joking, but they said it was just a mobile phone".
Jo:  "No Mo, they said it was to fix the mobile phone".
Mo: "It's not going to happen dude".
Jo: " It's this, the bench meter or the ass-silly-scope".
Mo: " :scared:

Muttley
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: tautech on March 31, 2015, 01:17:14 am
I have recently been asked now the SDM3055 might measure V & A simultaneously.
It is accomplished in much the same way as other meters.

This is a 3 wire measurement with Neg used for both measurements.
For Volts connect leads across of course, and Amps in series.

Select the primary measurement you are interested in. DCV
Then select "Dual" and for SDM3055 then "Shift then DCI".

Then the internal relay switches between the 2 measurement modes @ ~ 1 Hz.
The readings are stable on the display, no switching or flickering just constant.

The main display readout can be toggled with the "Dual" key to show the other Dual measurement as the main measurement, back and forth as you please.
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: Wmacky on March 31, 2015, 04:09:08 am
I wonder if this unit would be a big upgrade for someone using a Fluke 87V for bench work?
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: tautech on March 31, 2015, 04:29:22 am
I wonder if this unit would be a big upgrade for someone using a Fluke 87V for bench work?

Here's the link to the datasheet:
http://www.siglentamerica.com/USA_website_2014/Documents/DataSheet/SDM3055x_DataSheet_DS06035-E02B.pdf (http://www.siglentamerica.com/USA_website_2014/Documents/DataSheet/SDM3055x_DataSheet_DS06035-E02B.pdf)

Can I give you the comparison as a homework assignment?  ;)

Next up will a description of logging, trend plots etc., maybe later today.
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: Muttley Snickers on April 01, 2015, 10:08:17 am
Commentary added to the above disturbing picture.

Seriously, this is borderline moderation stuff.


Muttley
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: ShreveCC on April 19, 2015, 07:01:06 pm
I wonder if this unit would be a big upgrade for someone using a Fluke 87V for bench work?

Its been years since I purchased a bench meter, so the Siglent SDM3055 is a step into the future for me... I recently used my favorite bench meter to troubleshoot the family car and a fuse blew from age...  It is a well cared for meter and on its second pair of leads...  a Micronta 22-175A (1993, Radio Shack)
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: Siglent on April 21, 2015, 05:42:00 am
Hello.
I tested the operation of the instrument SDM3055- remote connection via LAN. An error has occurred when setting the LAN parameters. IP number is stored in order, Subnet mask is not saved. Each time the instrument is turned off and turned on, the Subnet mask setting is not saved.

Is this a bug in the software?

Greetings M.
this is a known problem, we have fixed in the coming firmware (11R2), but we will release it in about two weeks.
Dear smatjaz,
sorry for my delay. the new firmware is here.
http://siglentamerica.com/USA_website_2014/Firmware&Software/firmware/SDM3055-V100R001B01D01P12R1.zip  (http://siglentamerica.com/USA_website_2014/Firmware&Software/firmware/SDM3055-V100R001B01D01P12R1.zip)
release note http://siglentamerica.com/USA_website_2014/Firmware&Software/firmware/Release Notes for SDM3055 Firmware version 1.01.01.12R1.pdf (http://siglentamerica.com/USA_website_2014/Firmware&Software/firmware/Release Notes for SDM3055 Firmware version 1.01.01.12R1.pdf)
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: Armxnian on April 23, 2015, 02:14:37 am
There is a step missing from the guide included in that zip file. After going to browse, instead of highlighting "external" and pressing select, you have to highlight "external" and press the right arrow key to go into the directory to select the firmware file. Took me a while to figure out.
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: Muxr on April 23, 2015, 03:30:23 am
It seems that this is their very first multimeter ever released. Then I do not want it. It has a color LCD, so it must be full of bugs.
I would trust GW Instek multimeters instead. Yes, they make some so-so scopes, but they still work as promised. Almost.
Is that a VFD or a LED display on the GW Instek? Looks really crisp and nice. For some reason I hate these DMMs with TFT panels. They just don't look as nice.
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: Armxnian on April 23, 2015, 03:53:18 am
Is that a VFD or a LED display on the GW Instek? Looks really crisp and nice. For some reason I hate these DMMs with TFT panels. They just don't look as nice.

VFD is crisper but that's about the only benefit. Meters with an lcd can fit a lot more statistical information and have capabilities for trend plots, graphs, etc.
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: Siglent on April 23, 2015, 02:28:29 pm
I noticed it, I will let the guide more clearly.
thanks for reminding,
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: ShreveCC on May 03, 2015, 07:04:25 pm
The datasheet is now available for download from Siglent:
http://www.siglent.com/DataSheet/EN/SDM3055_DataSheet_EN.pdf (http://www.siglent.com/DataSheet/EN/SDM3055_DataSheet_EN.pdf)

Wow, looks like they completely ripped off the Agilent UI

Yes, it really does look the AGILENT TECHNOLOGIES 34461A; however it is a rather nice bench meter at a 1/3 of the price (Agilent $1,592)... I paid $469 US dollars.  I just purchased this Siglent meter, and it is very nice in its 5.5 digit class.
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: tautech on May 03, 2015, 08:06:54 pm
The datasheet is now available for download from Siglent:
http://www.siglent.com/DataSheet/EN/SDM3055_DataSheet_EN.pdf (http://www.siglent.com/DataSheet/EN/SDM3055_DataSheet_EN.pdf)

Wow, looks like they completely ripped off the Agilent UI
Yes, it really does look the AGILENT TECHNOLOGIES 34461A; however it is a rather nice bench meter at a 1/3 of the price (Agilent $1,592)... I paid $469 US dollars.  I just purchased this Siglent meter, and it is very nice in its 5.5 digit class.
:)
Best you edit your reply and place it outside the Quote's.  ;)

Yep at 1/3 the price, I'm surprised Siglent can keep up with production.
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: Muttley Snickers on May 03, 2015, 11:06:42 pm
https://www.youtube.com/watch?v=cONPazkWBg4 (https://www.youtube.com/watch?v=cONPazkWBg4)
^^^ Not me, might be a forum member or recent guest.^^^

It's not what it costs, It's what you get for your money.
Headaches and nightmares should not be part of the deal.


Muttley
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: tautech on May 04, 2015, 08:03:34 am
https://www.youtube.com/watch?v=cONPazkWBg4 (https://www.youtube.com/watch?v=cONPazkWBg4)
^^^ Not me, might be a forum member or recent guest.^^^

It's not what it costs, It's what you get for your money.
Headaches and nightmares should not be part of the deal.


Muttley
2 things:
He forgot or didn't read the FW update instructions.
There are 2 parts to that FW upgrade, the "transition file" and the upgrade.
Don't believe me: look at the paper FW instructions he held up.  :palm:
That will explain the corrupt boot screen.

The latest FW is 12R1:
https://www.eevblog.com/forum/testgear/siglent-new-bench-dmm-sdm3055/msg656787/#msg656787 (https://www.eevblog.com/forum/testgear/siglent-new-bench-dmm-sdm3055/msg656787/#msg656787)

Further.... it seems he has posted on his YT channel the GPIB module had been omitted from his shipment and it has been forwarded to him.
The GPIB unt for these DMM's is a separate USB to GPIB module, not a plugin module.
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: H.O on May 04, 2015, 08:59:06 am
Quote
The GPIB unt for these DMM's is a separate USB to GPIB module, not a plugin module.
This is a bit confusing. The picture of the backside of the 3055A on the Siglent America (http://siglentamerica.com/qyxwxx.aspx?id=920/) website clearly shows a GPIB connector on the instrument itself.

It was my understanding that you, with the 3055A received a USB to GPIB dongle where the GPIB end of it obviously would plug into the GPIB connector on the instrument.

Are you saying that there is no (and should be no) actual GPIB connector on the 3055A and that the dongle/adapter you get is a GPIB to USB adapter, ie it the adapter connects between an existing GPIB network and the USB port of the 3055A? That sounds a bit strange....
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: Muttley Snickers on May 04, 2015, 09:24:58 am
H.O
Your link to Siglent America didn't work for me but there
is a picture of the units rear on the first page of this thread.

Muttley
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: tautech on May 04, 2015, 09:40:36 am
Quote
The GPIB unt for these DMM's is a separate USB to GPIB module, not a plugin module.
This is a bit confusing. The picture of the backside of the 3055A on the Siglent America (http://siglentamerica.com/qyxwxx.aspx?id=920/) website clearly shows a GPIB connector on the instrument itself.

It was my understanding that you, with the 3055A received a USB to GPIB dongle where the GPIB end of it obviously would plug into the GPIB connector on the instrument.

Are you saying that there is no (and should be no) actual GPIB connector on the 3055A and that the dongle/adapter you get is a GPIB to USB adapter, ie it the adapter connects between an existing GPIB network and the USB port of the 3055A? That sounds a bit strange....
Yes, this is the situation with my unit. Separate Dongle.  I'm not saying Siglent did not intend GPIB to be integral to the 3055A, but it's not in mine.
I understand the confusion, even my Quick Start guide and E-manual show the image you describe.

Current data I/O's are:
Rear USB
Front USB
LAN

Excuse my ignorance but when GPIB is connected via USB, would the need still arise to use the other I/O's?
Would you just pull one and use another?
I can use EasyDMM software with either LAN or USB and switch from one to the other while both are connected and set LAN or USB EasyDMM to capture data to a USB stick on the front panel.
Do we need more total functionality than this?

As Jade (Siglent) keeps a watch on these threads, we might hope for an update if GPIB might change.  :-//
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: H.O on May 04, 2015, 10:20:34 am
Hi,
Would you mind posting a photo of the dongle you received with your 3055A?

It's just weird, every USB to GPIB dongle I've seen (granted, I haven't seen that many) is designed to convert a USB port on the PC to a GPIB port (ie the PC is the host). I've never come across one which acts a USB-host which, if I'm not mistaken, it has to do here since the 3055A is the device.
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: tautech on May 04, 2015, 10:33:33 am
Hi,
Would you mind posting a photo of the dongle you received with your 3055A?

It's just weird, every USB to GPIB dongle I've seen (granted, I haven't seen that many) is designed to convert a USB port on the PC to a GPIB port (ie the PC is the host). I've never come across one which acts a USB-host which, if I'm not mistaken, it has to do here since the 3055A is the device.
It is listed as an accessory to many of Siglent's models including SDM3055:
http://www.siglentamerica.com/prodcut-fjxx.aspx?fjid=1198&id=176&tid=37&T=2 (http://www.siglentamerica.com/prodcut-fjxx.aspx?fjid=1198&id=176&tid=37&T=2)
Mine has a USB "A" plug (front panel)
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: H.O on May 04, 2015, 06:19:45 pm
That explains it, thanks!
Still think it's odd that they show a dedicated GPIB connector in the pictures (which clearly aren't photos but digital renderings). They must have changed their mind on the way it was being implemented...

And the fact that you need to connect it to the front panel USB connector might be good information to know but I guess once you have it in an automation system actually using the adapter then not being able to use a thumbdrive isn't a big deal.

Personally, if I'll be getting one it'll be the non A model.
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: tautech on May 04, 2015, 07:07:28 pm
That explains it, thanks!
Still think it's odd that they show a dedicated GPIB connector in the pictures (which clearly aren't photos but digital renderings). They must have changed their mind on the way it was being implemented...
OR
As I suspect: Siglent already had the GPIB dongle for their other products, but are yet to implement intregral GPIB in the SDM3055.

We'll see if Siglent can confirm intregral GPIB is yet to come.

Title: Re: Siglent NEW Bench DMM SDM3055
Post by: Siglent on May 05, 2015, 02:07:41 pm
We planed to add GPIB and Scanner to SDM3055 series first, but we found there is no much request from the customers, so we gave up them at that time and instead of USB-GPIB.
Sorry to bring you trouble. Here we want to hear your voice about how important of GPIB interface.
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: H.O on May 05, 2015, 05:48:30 pm
For me personally, not at all - I''m quite allright with ethernet/Lxi but your product pages and documentation really is confusing and if I was buying with the intention of using GPIB I'd be quite surprised and disapointed quite frankly. Then again, the dongle DOES apparently provide the promised interface so I don't know.....

Anyway, since you're asking for input: Being clear of what's actually going on and not showing fake product photos/renderings would help.
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: Muttley Snickers on May 06, 2015, 01:18:49 am
I can now readily see how the fellow in the video managed
to bugger up the firmware upgrade as pointed out by tautech.
Not all that hard to get it right if you happen to dig a bit deeper.

The Siglent America site only has the required transition file
in version P11 and not the previous P09 nor the current P12.
So if your version is P09 you need to jump up to P11 then P12.
If you are currently running P11 it looks like you may still need to download that
version from the site to get the transition file required for P12, the current version.

Think I got it right, please forgive me if I didn't, tautech will be able to confirm if the above is correct.

Muttley

Title: Re: Siglent NEW Bench DMM SDM3055
Post by: rf-loop on May 06, 2015, 06:56:27 am
Also previously informed here (http://siglent.freeforums.org/very-important-fw-update-for-sdm3055-multimeter-t125.html).
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: tautech on May 06, 2015, 08:31:08 am
The Siglent America site only has the required transition file
in version P11 and not the previous P09 nor the current P12.
So if your version is P09 you need to jump up to P11 then P12.
If you are currently running P11 it looks like you may still need to download that
version from the site to get the transition file required for P12, the current version.

Muttley
All correct.  :-+
Great detective work.  ;)

Yes, for the 12R1 I had to run the transition file again before it would accept the 12R1 FW as valid.
As I keep all these FW updates for client support, it was no problem.

Thanks rf-loop for your link that very clearly explains the process.  :-+
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: Pieh0 on May 11, 2015, 10:31:31 am
2 things:
He forgot or didn't read the FW update instructions.
There are 2 parts to that FW upgrade, the "transition file" and the upgrade.
Don't believe me: look at the paper FW instructions he held up.  :palm:
That will explain the corrupt boot screen.

The latest FW is 12R1:
https://www.eevblog.com/forum/testgear/siglent-new-bench-dmm-sdm3055/msg656787/#msg656787 (https://www.eevblog.com/forum/testgear/siglent-new-bench-dmm-sdm3055/msg656787/#msg656787)

Further.... it seems he has posted on his YT channel the GPIB module had been omitted from his shipment and it has been forwarded to him.
The GPIB unt for these DMM's is a separate USB to GPIB module, not a plugin module.

Just registered to reply to this.

I did do both updates, as you can see I had the full update pdf printed, and had both files on the USB stick and updated it with both files, i didn't feel the need to spell out every single movement I made to update it, as i had the full update pdf in hand and followed it, also making comment about it not restarting after the updates.

Also, i did post an update on the comments to say that the GPIB issue had been resolved, as one of the packers at Siglent forgot to put the USB-GPIB interface in the box. While i expected it to be on the back where all the pictures on the net show, it turned out that it got changed when they release it, which is fair enough. After speaking with Labtronix, they contacted Siglent and DHL'ed me a new one within a few days. Can't fault Labtronix or Siglent as they both corrected the problem quickly :).

Thanks letting me know about a newer firmware, i will flash it later on :).
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: tautech on May 11, 2015, 10:36:08 am
Welcome to the forum.

Have you resolved your boot screen problem?
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: Pieh0 on May 11, 2015, 11:05:25 am
Not yet, hoping that R12 will clear it.

Like i said in the video (i think), the boot logo isn't a major issue, as long as it doesn't nuke its self like the delivered fw version does :P.
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: Pieh0 on May 13, 2015, 04:44:43 pm
Well P12 didn't fix it, not sure about downgrading the firmware, wouldn't have thought it would be a problem but i'm not going to try it unless Siglent says it's ok.

https://www.youtube.com/watch?v=TeszsTcHTyU (https://www.youtube.com/watch?v=TeszsTcHTyU)
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: tautech on May 13, 2015, 08:32:08 pm
Well P12 didn't fix it, not sure about downgrading the firmware, wouldn't have thought it would be a problem but i'm not going to try it unless Siglent says it's ok.
Have you tried to run the transisition file again?

Siglent have a 3 year warranty for these, modify your profile with your country flag so we can suggest local support for you if required.

You can also contact Siglent directly via this thread or the links in it:
https://www.eevblog.com/forum/testgear/siglent-technical-support-join-in-eevblog/ (https://www.eevblog.com/forum/testgear/siglent-technical-support-join-in-eevblog/)
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: Siglent on May 14, 2015, 02:37:10 am
Well P12 didn't fix it, not sure about downgrading the firmware, wouldn't have thought it would be a problem but i'm not going to try it unless Siglent says it's ok.

https://www.youtube.com/watch?v=TeszsTcHTyU (https://www.youtube.com/watch?v=TeszsTcHTyU)
Dear Pieh0,
Welcome to the forum. I am sorry for your situation, But we can not duplicate the problem. Maybe you can try to update Siglent Configure file.
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: Pieh0 on May 14, 2015, 09:42:02 pm
Just tried that file, doesn't seem to have fixed the boot logo image :/.
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: Armxnian on May 16, 2015, 05:38:41 am
I'm having trouble getting the configuration file to load on boot up. I set the meter to how I like it, for example showing statistics and a bar graph, save it as .xml, load it, then put the meter to "power on: last". The manual says the configuration is effective after a restart but it's not. It just loads into dc voltage without statistics and a bar graph. I can go to 'recall' and load the file and the statistics and bar graph will be there but that defeats the purpose of a "power on last". The manual says the meter defaults to dc voltage on power up so what's the point of "power on last" if it deletes the interface settings? What I'm trying to do is possible right?

I store the files on the internal storage. Just to add, when I go into 'manage file', I can delete .csv files and screen shots but the .xml files are not there, so I can't delete them. They are in the 'store/recall' menu however. Using the latest firmware.
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: tautech on May 16, 2015, 09:52:06 am
I'm having trouble getting the configuration file to load on boot up. I set the meter to how I like it, for example showing statistics and a bar graph, save it as .xml, load it, then put the meter to "power on: last". The manual says the configuration is effective after a restart but it's not. It just loads into dc voltage without statistics and a bar graph. I can go to 'recall' and load the file and the statistics and bar graph will be there but that defeats the purpose of a "power on last". The manual says the meter defaults to dc voltage on power up so what's the point of "power on last" if it deletes the interface settings? What I'm trying to do is possible right?

I store the files on the internal storage. Just to add, when I go into 'manage file', I can delete .csv files and screen shots but the .xml files are not there, so I can't delete them. They are in the 'store/recall' menu however. Using the latest firmware.
I agree with you, Power on:"Last" does NOT operate as one would expect.
You might expect ANY state the DMM is used in to be returned at Power On. You do and I would.

That a custom configuration can also be saved for frequent use is an additional feature IMO.

Several readings of your IMO "clear" description of your UI operation AND pages 44 & 45 of the manual indicates the DMM is operating as Siglent intended.

Quote
DC Voltage is always the selected function when the instrument is turned on even if you have selected "Last" or "Factory Default" as the Power On state.
This needs to be changed.

It seems after Power On you must then select your saved setting, this I believe is "arse about face", your saved setting should become the "Power On" state and the option to return to "Factory Default" (DC Voltage) or "Last" can then be selected if necessary.

Siglent....BUG
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: Armxnian on May 16, 2015, 08:42:14 pm
I agree with you, Power on:"Last" does NOT operate as one would expect.
You might expect ANY state the DMM is used in to be returned at Power On. You do and I would.

That a custom configuration can also be saved for frequent use is an additional feature IMO.

Several readings of your IMO "clear" description of your UI operation AND pages 44 & 45 of the manual indicates the DMM is operating as Siglent intended.

'Power on last' does not operate in general. It resets all UI settings and goes into DC voltage. It does the exact same thing that 'Power on factory default' does.

I remember it working for some time at random. Turning the meter off with it in resistance measurement and statistics would sometimes return it in the same mode on power on, but it doesn't do it anymore.
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: tautech on May 16, 2015, 09:08:06 pm
I agree with you, Power on:"Last" does NOT operate as one would expect.
You might expect ANY state the DMM is used in to be returned at Power On. You do and I would.

That a custom configuration can also be saved for frequent use is an additional feature IMO.

Several readings of your IMO "clear" description of your UI operation AND pages 44 & 45 of the manual indicates the DMM is operating as Siglent intended.

'Power on last' does not operate in general. It resets all UI settings and goes into DC voltage. It does the exact same thing that 'Power on factory default' does.

I remember it working for some time at random. Turning the meter off with it in resistance measurement and statistics would sometimes return it in the same mode on power on, but it doesn't do it anymore.
I'm guessing that has been lost with one of the FW updates, I seem to remember it too.
I'll point Siglent to your post.

Edit
For further understanding of this problem, it is easy to select the different measurement types from the front panel buttons, some require the Dual (shift) button like 4 W resistance for example, but when a special setup is used, it should be able to be saved for further use and/or be returned at Power on, wouldn't you think?

Let's see if any other owners can support us and Siglent getting Power on state right......

Replies of support or otherwise please.
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: Armxnian on May 17, 2015, 03:48:28 am
I'm guessing that has been lost with one of the FW updates, I seem to remember it too.
I'll point Siglent to your post.

Edit
For further understanding of this problem, it is easy to select the different measurement types from the front panel buttons, some require the Dual (shift) button like 4 W resistance for example, but when a special setup is used, it should be able to be saved for further use and/or be returned at Power on, wouldn't you think?

Let's see if any other owners can support us and Siglent getting Power on state right......

Replies of support or otherwise please.

Yeah it is easy to select what you want. I can enable the statistics and change the display mode faster than recalling the configuration file, but it's really annoying to do it on every start up.

I think power on 'last' should return the meter to the exact state in which it was powered off, including all UI settings and measurement settings. There should also be a feature to select which configuration file, if any, you want to be loaded on power up.

We also need the ability to delete the .xml configuration files.

This meter will be a winner once the bugs are fixed.
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: Siglent on May 18, 2015, 12:53:19 am
Just tried that file, doesn't seem to have fixed the boot logo image :/.
When does the problem happen? Does it exist  when you get the DMM with firmware P09?
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: Siglent on May 18, 2015, 01:20:49 am

Yeah it is easy to select what you want. I can enable the statistics and change the display mode faster than recalling the configuration file, but it's really annoying to do it on every start up.

I think power on 'last' should return the meter to the exact state in which it was powered off, including all UI settings and measurement settings. There should also be a feature to select which configuration file, if any, you want to be loaded on power up.

We also need the ability to delete the .xml configuration files.

This meter will be a winner once the bugs are fixed.

Thank you, I think we should take your advice to solve the power on setting's problem. and the ability to delete the .xml file.
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: tautech on July 20, 2015, 10:44:19 pm
Link to Shahriar's review thread:

https://www.eevblog.com/forum/testgear/siglent-sdm3055a-5-5-digit-multimeter-review-teardown-experiments/ (https://www.eevblog.com/forum/testgear/siglent-sdm3055a-5-5-digit-multimeter-review-teardown-experiments/)
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: MartyD on July 30, 2015, 07:57:16 pm
There is a new firmware: http://www.siglenteu.com/gjjrj-xq.aspx?id=1113&tid=15 (http://www.siglenteu.com/gjjrj-xq.aspx?id=1113&tid=15)

Sadly, there is no changelog.  :rant:
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: tautech on July 30, 2015, 09:22:46 pm
There is a new firmware: http://www.siglenteu.com/gjjrj-xq.aspx?id=1113&tid=15 (http://www.siglenteu.com/gjjrj-xq.aspx?id=1113&tid=15)

Sadly, there is no changelog.  :rant:
I'll see if I can get the changelogs, Siglent had stated they would include them with all FW.  :-//

FW ****13R1 also from here:
http://www.siglentamerica.com/gjjrj-xq.aspx?id=1390&tid=15 (http://www.siglentamerica.com/gjjrj-xq.aspx?id=1390&tid=15)

Note, from the included Update instructions:

First you must update the transition file

transition.ADS was included in a previous FW revision, IIRC ****11R1 (29/1/2015)

transition.ADS can be obtained as part of previous FW here:
http://www.siglentamerica.com/gjjrj-xq.aspx?id=1239&tid=15 (http://www.siglentamerica.com/gjjrj-xq.aspx?id=1239&tid=15)
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: MartyD on August 01, 2015, 11:42:19 am
I think there is no need for the transition file when updating from the previous ***12R1, otherwise Siglent would include this file with the current download.. no?!
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: tautech on August 01, 2015, 11:51:33 am
When you say  "no need", did you not use the transition file?
Did you check it updated correctly to the new FW version?
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: MartyD on August 03, 2015, 08:02:19 pm
When you say  "no need", did you not use the transition file?

Nope

Quote from: tautech
Did you check it updated correctly to the new FW version?

Yep

I guess the transition-file is only needed when updating from a firmware older than 11R1, I've updated from R12 to R13 without any issue.

However, there are still Issues in the firmware I'd love to see fixed...
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: tautech on August 03, 2015, 09:10:14 pm
However, there are still Issues in the firmware I'd love to see fixed...
Please share them here or report them to Siglent.
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: Armxnian on August 14, 2015, 10:47:08 pm
When you say  "no need", did you not use the transition file?
Did you check it updated correctly to the new FW version?

Flashing the transition file fails. It's probably only needed if going from .11 to .13, not .12 to .13 since it already has it. Update to .13 worked fine.

However, there are still Issues in the firmware I'd love to see fixed...
Please share them here or report them to Siglent.

The update speed is still the same on slow, but middle and fast do seem a bit faster, but maybe that's just me. They did fix one thing; giving us the ability to delete files on the internal storage. Power on last still doesn't do anything and the meter just starts at its defaults. Also, next to the auto trigger on the top, there is a network symbol with an x on one of the devices, meaning the device is disconnected from your LAN. I turned the LAN off in the settings but the symbol is still there.

A changelog would be nice.
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: verbatone on September 02, 2015, 11:15:02 pm
For the money, it seems like this is a pretty ok meter, but somehow I just can't get past some of the laggy features of it.  Thanks to the Signal Path for the nice review!

I guess my main problem with this meter, again, not that I own it, is the ranging update.  The thing seems dog slow for range updates.  For anyone who owns it, is it that bad in practice?  I can forgive the screen update speed based on the slow/middle/fast setting.  Essentially this should have to do with integration time.  I don't know if it correlates 100%, but really, if it does, it really doesn't matter how fast the numbers update.  If you have a meter which updates the display 100x/s, that mean you have an effective bandwidth of integration of greater than 100Hz.  Meaning you won't integrate anything less than that frequency (AC or DC or otherwise).  So if one want to integrate down to 1Hz, you need no faster than a 1Hz update rate.  A similar thing applies to FFTs.  Siglent says this meter can do 160 samples/s (or something like that), so that's really only good for sampling short term events, which is good for looking for noise spike or otherwise.  I guess what I'm also unsure of is when it's in graphing mode, does it update at the 160 samples/s or at a lower rate?  Is the only way to get the 160 samples/s from USB?  And I also assume (probably could find it in the data sheet), there's a loss in resolution at 160 samples/s data collection.

My secondary issue in hunting for a DMM is that I wan't one with decent capacitance measurement (my old Fluke 79III just doesn't measure sometimes, and I don't think it's because it's out of bounds, it's something else).  Finding a bench DMM with reasonable resolution and capacitance at a reasonable price point is proving to be a challenge.   I repair a fair amount of vintage musical equipement and caps are routinely the problem, so testing them is critical.  So I'm a bit stuck on the DMM hunt, I want a decent meter with capacitance for less than $1200US (Keysight).  I could go BK precision, but for just a bit more, Siglent comes in the picture.

I prefer a bench DMM cause I'll always misplace a handheld somewhere and end up spending more time looking for it than using it.

Input or Thoughts?
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: tautech on September 03, 2015, 09:23:40 am
As this was my first bench DMM, Signal paths review was an eye opener, that most meters are much faster than the 3055.
Yes the display is slower than a HH, but other than that for normal use it works as intended.
I've checked the cap measurement against a Fluke and Smart Tweezers and accuracy is good.
I've not inquired if additional FW is imminent, but I guess after issues the review has identified there will be some.

I'll try to give you an update in a few days.
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: verbatone on September 12, 2015, 08:45:14 am
Well I took a chance and bought this meter.  And when I got it, it had version R11 firmware.  I was doing some testing of the unit and it seemed just about the same as the Signal Path review, though I think he was using R12.  I wasn't exactly impressed.  All of my fears on this meter were there.  The slow everything was just a little sub-par.  Still for the money, it's not too bad, but there were enough issues that I wasn't smiling.  So I downloaded the R13 firmware from Siglent (without much hope based on previous comments from Armxnian) and installed it.  Wow, a real step up in speed on a lot of functions.  The continuity was usable (R11 had a poor response time).  For R13, if the connection is really brief, it may miss the event, but generally it's pretty fast.  I would say just marginally worse than my old Fluke 87 III, which I've never had a complaint about.  And if you up the threshold limit, it does get faster.  Still at 50 Ohm, it's pretty good.  The ranging is much faster.  R11 was doggy switching from 2V to 20V range in DCV (middle speed), now it's as fast as I can move from a 1V to 10V output on the DP832!  Not too shabby.  Even the .1V (200mV range ) to 30V (200V range) switch is quick.  Again, from my last post, using the slow speed isn't fair for range switching since the integration time is already 1s, so you can't expect the display to switch sub 1s when the periodic update speed is 1s.

The meter's performance is pretty good.  Measured up to 3MHz on frequency, even though the signal was severely attenuated...in the 100s of uV.  DCI/Ohms agrees with my Fluke (to it's 3.5 resolution).  I have the .1% IET decade resistor box at work, I'll borrow it and test it out.

Again, overall, I'm pretty happy with the R13 update.  Still room for improvement, but if the incremental updates are any indication, at least it's going in the right direction.  Still wish there was an ultra fast speed. 

Sadly I bought a Keithley 2110 reasonably cheap on Ebay, now I have to decide which one stays and which one goes.
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: fremen67 on September 12, 2015, 10:47:22 pm
R13 is indeed an improvement over the previous version but 30s between the moment you push the ON button and the moment you see a value on the screen is still very long (4s for my HP34401A ...).
I will keep both of them for the moment but I find  myself usually just using the HP for quick checks.
I hope this will improve further more with the next relase   :-//
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: Muttley Snickers on September 14, 2015, 07:33:24 am
Martin Lorton has made a couple of videos on the Siglent SDM-3055 bench multimeter if anybody is interested.

Part 1
https://www.youtube.com/watch?v=0wXZ5IezdP0 (https://www.youtube.com/watch?v=0wXZ5IezdP0)
Part 2
https://www.youtube.com/watch?v=WxnSRGE82cA (https://www.youtube.com/watch?v=WxnSRGE82cA)
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: verbatone on September 15, 2015, 07:42:38 am
I'll have to agree with most of Martin's points in the video.  Though I think I'll give my unit a proper review of some of the issues he mentions.

The continuity meter delay is worse at lower thresholds...this is somewhat intuitive, setting it back to 50 Ohms makes it more responsive than Martin's test shows.  I think my old Fluke uses 40 Ohms for the threshold and rarely do I fault it's continuity check.  If I really want to know how many Ohms it is, I'll flip the unit to resistance to see what it really is.

Again, I don't agree that you can fault the meter for having a slow update when you want 1s integration time.  I suppose there are ways to have a running average rather than a non-overlap average and still maintain a 1s integration time, but since the display is updating 1 time/sec, you can expect the display to update 2 times/sec.

One other thing I notices, even in the later firmware is that the dual reading between ACV and freq is dog slow.  These two measurements should not require relay switching, but still, the time to make each measurement really bogs down the machine.  Also for dual measurements, beyond the current disconnect issue point out both by Martin and the Signal Path, I can understand the latency in measurements for current/voltage measurements being slow as the relay probably requires some settling time...though I hope they can improve this in the future and not require an open circuit period.

And if Siglent can do another couple rounds (or just one good one) of firmware updates with the same improvements as R12->R13, that would be great.

Oh yeah, and Siglent, just publish a change log, it would take 30 minutes of time to make.  I'm sure you're not fixing 100's of bugs per releases.
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: Armxnian on September 15, 2015, 07:45:01 pm
I don't think display update rate has anything to do with integration time. NPLC only affects the internal sampling speed. I can have a device take 100 readings per second and have a display update rate of 1Hz, so I would see the 100th reading every second if no mean functionality was implemented. On the other hand, I could have a device take 1 reading per second and have a screen update rate of 100Hz, meaning the screen would show the same value 100 times for 1 second.
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: verbatone on September 22, 2015, 07:22:58 am
Armxnian, while it's true what you're saying...those measurement methods could be done, I don't really see the point.  In the end, you're trying to find a settled value and the integration time has a direct correlation to the settled value of a specified period of time.  Siglent says they do 5 sample per sec on slow mode, but they only update the display about once a sec.  So there is clearly a mismatch.  If this is true, they are either averaging about 5 reading to get 1 update per display, or they're doing as you mention and only showing one value of the 5...which means they cannot resolve more than about .2s.

On other topic from Martin's video.  I don't have the voltage settling issue he notes.  I added a very large RC on the output of my supply and let it settle for a long time, then hooked up the SDM3055...it goes almost directly to the final result, no settling.  There does seem to be bit of a jump in DCV when the filter is applied, but it doesn't jump much.

In looking at some other things, I used the Easy DMM software to capture some data.  It doesn't seem to matter what capture rate I use, it's always about 50 samples per second.  Not sure what that's about, but the display on the unit and the display on the Easy DMM shows pretty much the same thing.  Strangly there is a weird bobble when the system goes through a zero crossing in slow mode, on both sides of zero.  This can be rectified by going to either middle or fast, or raising the DC offset of the system.  See the attached picture.

Title: Re: Siglent NEW Bench DMM SDM3055
Post by: Armxnian on September 23, 2015, 03:53:29 am
Since slow mode takes 5 samples/s, I don't see much reason to average the readings. Why not just display all 5 readings in 1 second? I would rather see the 5 individual "live" readings. Averaging readings to display on the screen would be more useful for faster sampling rates where displaying all of the readings wouldn't make sense, or be impossible, like in fast mode (150 samples/s).

Furthermore, fast mode introduces noise, whether it be from power line or internal components, and can be viewed in the trend plot. You also lose a digit of resolution. Increasing update speed and potentially getting a less "stable" reading is a worthy trade off, since you would be using slow mode for the most accurate and precise measurements anyway.

Most hand held meters on the market have 3-4 updates/s, and even have bar graphs with 60 updates/s. Offerings from Keysight or Keithley are capable of much higher. 1-2 screen updates for a bench meter like the SDM3055 is IMO unacceptable, especially since it is capable of sampling at 150x/s. Increasing the screen update rate to something even just a little higher like 5x/s would make the meter much more effective and a pleasure to use.
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: verbatone on September 24, 2015, 08:04:59 am
Hmm, I guess we can go back and forth on this.  I still feel like there are some concepts slipping through the crack, but in general, I agree with you.  I wish the meter gave a bit more control over the update rate and the effective LPF effect.  Ideally they would have both controls exposed, but even the 34401 doesn't have this feature.

In reality, I'm less concerned that the slow mode is slow update, and more concerned that the middle and fast have basically the same screen update rate.  That means the fast function become useless unless you're logging data.
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: tautech on September 24, 2015, 08:17:30 am
@Armxnian and verbatone

Thanks for your ongoing discussion, I've linked Siglent R&D to this thread.
Between you (and others), if you can belt out a wish list of improvements needed it would be appreciated.  :-+
SDM3055 owners please.

Thanks and please continue.
 :popcorn:
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: sanman on September 26, 2015, 03:41:16 pm
I was on the fence about buying this meter. I wanted 5 1/2 digits and I liked the screen and features but, after seeing the reviews, I was worried about speed/update.

After reading that Siglent recently released updated firmware that addresses speed/update I went ahead and ordered from TEQUIPMENT. Should arrive sometime next week!  :D
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: tautech on September 30, 2015, 06:45:37 pm
Latest  R15.1 FW
http://www.siglentamerica.com/USA_website_2014/Firmware&Software/firmware/SDM3055_(V100R001B01D01P15R1).rar (http://www.siglentamerica.com/USA_website_2014/Firmware&Software/firmware/SDM3055_(V100R001B01D01P15R1).rar)
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: Armxnian on September 30, 2015, 07:28:15 pm
Flashed my unit. With the increased update rate, it's like a completely different meter. You don't have to wait forever to get a reading on the slow option. "Middle" speed is now very useful as it gives a balance between a stable reading and high update rate. Fast mode is insane, I can rotate the dial on my dp832 and see the values change live. Looks like the feedback of others and mine paid off.  :-+

I did notice one thing though. When you change the display mode to bar graph, trend or histogram, the meter update rate significantly slows down, back to where it was before the new firmware. I'm guessing this is due to processing limitations.
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: tautech on September 30, 2015, 07:38:37 pm
Flashed my unit. With the increased update rate, it's like a completely different meter. You don't have to wait forever to get a reading on the slow option. "Middle" speed is now very useful as it gives a balance between a stable reading and high update rate. Fast mode is insane, I can rotate the dial on my dp832 and see the values change live. Looks like the feedback of others and mine paid off.  :-+

I did notice one thing though. When you change the display mode to bar graph, trend or histogram, the meter update rate significantly slows down, back to where it was before the new firmware. I'm guessing this is due to processing limitations.
Thanks for this feedback.  :-+

More please as you find it.....
 :popcorn:
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: Armxnian on September 30, 2015, 07:59:43 pm
More please as you find it.....
 :popcorn:
If there are listeners I'll keep talking  :blah: ;D

'Power on last' seems to work randomly. I can't find much of a pattern to when it works or when it doesn't other than when it does, and you don't change anything, it continues to work for a while until you shut it off with different settings.

On fast mode, the reading seems to jump around by millivolts. However, if you enable the AC filter, it settles down. There shouldn't really be any measurable (at least on a meter) ac ripple coming from a dp832. Power line noise could be a culprit since increasing the sampling rate, as in the case of fast mode, reduces normal mode rejection. But would enabling an ac filter located at the input block noise injected from the outputs? Sounds weird.

Title: Re: Siglent NEW Bench DMM SDM3055
Post by: Eric-H on October 06, 2015, 05:11:15 pm
I see two strange things on my SDM3055:

1) When measuring VDC in slow mode I get different values when the filter is on or off. E.g. with the input shorted, I measure a value of 0.000 mV when the filter is off, and a value of 0.007 mV when the filter is active. I checked using the histogram display and see two sets of values, one clustered around 0.000 mV when the filter is off and another set around 0.007 mV when the filter is on.

2) When using a K-type thermocouple I measure a stable temperature of e.g. 20.0 deg C. When I then switch to VDC mode and directly back to temperature mode, I get a value that can differ between 0.5 to 3 deg C from the previous value. This occurs when the temperature mode was active for  a few (10+) minutes before switching to VDC and back. It seems as the SDM3050 does some compensations on enter temperature mode that are not repeated while the temperature mode is active. After switching from VDC and back to temperature the compensation is done again causing the measured temperature to jump a few degrees.

Has anyone else seen these effects on their units?

I hope Siglent can fix these bugs in a next firmware release. It would give me more confidence in the measured values.
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: Siglent America on October 06, 2015, 05:50:54 pm
Hi Eric.
Were you using the latest FW (15R1)?
It is available on the Siglent websites.

If this occured using the latest FW then I will report this to Engineering.
Thank you.
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: Eric-H on October 06, 2015, 05:55:46 pm
Hi,
Yes I'm using the latest firmware.
 
Thanks for the fast response!
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: tautech on October 06, 2015, 07:10:02 pm
I see two strange things on my SDM3055:

1) When measuring VDC in slow mode I get different values when the filter is on or off. E.g. with the input shorted, I measure a value of 0.000 mV when the filter is off, and a value of 0.007 mV when the filter is active. I checked using the histogram display and see two sets of values, one clustered around 0.000 mV when the filter is off and another set around 0.007 mV when the filter is on.
When this is obsevered do you have the Relative measurements setting On or Off?
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: Eric-H on October 06, 2015, 07:47:21 pm
I see two strange things on my SDM3055:

1) When measuring VDC in slow mode I get different values when the filter is on or off. E.g. with the input shorted, I measure a value of 0.000 mV when the filter is off, and a value of 0.007 mV when the filter is active. I checked using the histogram display and see two sets of values, one clustered around 0.000 mV when the filter is off and another set around 0.007 mV when the filter is on.
When this is obsevered do you have the Relative measurements setting On or Off?

Relative measurement is turned off.
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: tautech on October 06, 2015, 08:14:38 pm
I see two strange things on my SDM3055:

1) When measuring VDC in slow mode I get different values when the filter is on or off. E.g. with the input shorted, I measure a value of 0.000 mV when the filter is off, and a value of 0.007 mV when the filter is active. I checked using the histogram display and see two sets of values, one clustered around 0.000 mV when the filter is off and another set around 0.007 mV when the filter is on.
When this is obsevered do you have the Relative measurements setting On or Off?

Relative measurement is turned off.
As much info as possible is needed for R&D to replicate faults/bugs and initiate fixes.
Just trying to squeeze a little more from you.  ;)
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: Eric-H on October 06, 2015, 08:45:36 pm
I see two strange things on my SDM3055:

1) When measuring VDC in slow mode I get different values when the filter is on or off. E.g. with the input shorted, I measure a value of 0.000 mV when the filter is off, and a value of 0.007 mV when the filter is active. I checked using the histogram display and see two sets of values, one clustered around 0.000 mV when the filter is off and another set around 0.007 mV when the filter is on.
When this is obsevered do you have the Relative measurements setting On or Off?

Relative measurement is turned off.
As much info as possible is needed for R&D to replicate faults/bugs and initiate fixes.
Just trying to squeeze a little more from you.  ;)

To show what I found I've attached a screenshot of the effect. It shows the data gathered first with the filter off and then with the filter on. No other changes where made to the settings of the SDM3055 or the hardware setup. The data around 0 .000 mV was captured with the filter off, the data around 0.007 mV with the filter off.

To eliminate noise I've used a 4 mm to BNC converter with a 50 Ohm BNC terminator attached.
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: rf-loop on October 07, 2015, 02:50:22 am
I see two strange things on my SDM3055:

1) When measuring VDC in slow mode I get different values when the filter is on or off. E.g. with the input shorted, I measure a value of 0.000 mV when the filter is off, and a value of 0.007 mV when the filter is active. I checked using the histogram display and see two sets of values, one clustered around 0.000 mV when the filter is off and another set around 0.007 mV when the filter is on.
When this is obsevered do you have the Relative measurements setting On or Off?

Relative measurement is turned off.
As much info as possible is needed for R&D to replicate faults/bugs and initiate fixes.
Just trying to squeeze a little more from you.  ;)

To show what I found I've attached a screenshot of the effect. It shows the data gathered first with the filter off and then with the filter on. No other changes where made to the settings of the SDM3055 or the hardware setup. The data around 0 .000 mV was captured with the filter off, the data around 0.007 mV with the filter off.

To eliminate noise I've used a 4 mm to BNC converter with a 50 Ohm BNC terminator attached.

Still inside specifications. ;)     (this do not mean it is ok)
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: Armxnian on October 07, 2015, 03:19:12 am
1) When measuring VDC in slow mode I get different values when the filter is on or off. E.g. with the input shorted, I measure a value of 0.000 mV when the filter is off, and a value of 0.007 mV when the filter is active. I checked using the histogram display and see two sets of values, one clustered around 0.000 mV when the filter is off and another set around 0.007 mV when the filter is on.


Has anyone else seen these effects on their units?
I get the exact opposite. Probes shorted: with the filter off, 6uV, with the filter on, 0V. When feeding a 2Vrms AC signal with 0dcV offset, I get the normal noise of the meter with the filter off. But with the filter on I get 6-7mV. Doesn't really make much sense.
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: tautech on October 07, 2015, 10:27:05 am
1) When measuring VDC in slow mode I get different values when the filter is on or off. E.g. with the input shorted, I measure a value of 0.000 mV when the filter is off, and a value of 0.007 mV when the filter is active. I checked using the histogram display and see two sets of values, one clustered around 0.000 mV when the filter is off and another set around 0.007 mV when the filter is on.


Has anyone else seen these effects on their units?
I get the exact opposite. Probes shorted: with the filter off, 6uV, with the filter on, 0V. When feeding a 2Vrms AC signal with 0dcV offset, I get the normal noise of the meter with the filter off. But with the filter on I get 6-7mV. Doesn't really make much sense.
Don't you mean uV?
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: Armxnian on October 07, 2015, 05:26:36 pm
Don't you mean uV?
Nope.
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: tautech on October 07, 2015, 10:17:26 pm
Continuity test

I wanted to quantify the continuity test of the SDM3055 with the lastest 15R1 firmware.
Previously I  too thought performance was slow and this was confirmed in Sharihars review but it has improved with this latest firmware.

So how to do this?
A recent thread by member joeqsmith shows IMHO a very good method:
https://www.eevblog.com/forum/testgear/using-an-arb-to-test-meter's-continuity-feature/ (https://www.eevblog.com/forum/testgear/using-an-arb-to-test-meter's-continuity-feature/)



Results:
Continuity triggering stable to 15 Hz. (0-4V pk squarewave 50% duty)
Minimum pulse width reliably triggered is 15 ms. (@ 1Hz rate)

Equipment used:
Siglent SDG1010, output set to 50 Ohms impedence.



Title: Re: Siglent NEW Bench DMM SDM3055
Post by: Muttley Snickers on October 08, 2015, 05:07:29 am
You might also be able to use a AWG to gauge what the display update rate is more accurately by configuring either a ramp with increasing amplitude or even a basic high low square wave, the values don't really matter it's the meters ability to display the transition that counts.

Obviously some meters can output a reading much faster to PC than they can display it, but again as a reliable and accurate tool to calculate the update rate an AWG and perhaps in conjunction a scope to document these figures is a better solution to some video content producers simply declaring that "I think it's about one or two a second but it's a bit hard to tell'.

Also as most cameras will only do 25 or 30 and some better units 50 or 60 frames per second so recording of the meters display update rate during this type of reproducible test is something that I have not seen yet by people doing reviews on equipment and for sure as some equipment is so ridiculously fast that even some high speed cameras may struggle to get a grip.

Just some thoughts.


Muttley

Title: Re: Siglent NEW Bench DMM SDM3055
Post by: tautech on October 08, 2015, 07:54:50 am
You might also be able to use a AWG to gauge what the display update rate is more accurately by configuring either a ramp with increasing amplitude or even a basic high low square wave, the values don't really matter it's the meters ability to display the transition that counts.
Muttley
Muttley, experimentation with a 4V sawtooth (ramp) waveform did not yield any conclusive results on display update rate. However it did confirm measurement speed when frequency was adjusted until a stable DCV reading was observed. As outlined in the manual 5/s in slow, 50/s in middle mode, but over 250 Hz was needed to obtain a stable reading in fast mode when it's stated the rate is 150/s.

Display update rate will have to be given more thought unless you have some more of your brainwaves.  :scared:
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: Eric-H on October 08, 2015, 04:57:33 pm
Continuity test
Results:
Continuity triggering stable to 15 Hz. (0-4V pk squarewave 50% duty)
Minimum pulse width reliably triggered is 15 ms. (@ 1Hz rate)

I noticed that on my unit (with the 15R1 firmware) the continuity test was very slow. However, when I switched off the filter in VDC-mode the continuity mode reacts fast again.  So it seems the filter in VDC-mode influences the speed in other modes.  I assume that during your tests the filter was off.
I would prefer that in a next firmware version, the filter is automatically switched off when in continuity mode.
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: tautech on October 08, 2015, 07:02:05 pm
Continuity test
Results:
Continuity triggering stable to 15 Hz. (0-4V pk squarewave 50% duty)
Minimum pulse width reliably triggered is 15 ms. (@ 1Hz rate)

I noticed that on my unit (with the 15R1 firmware) the continuity test was very slow. However, when I switched off the filter in VDC-mode the continuity mode reacts fast again.  So it seems the filter in VDC-mode influences the speed in other modes.  I assume that during your tests the filter was off.
I would prefer that in a next firmware version, the filter is automatically switched off when in continuity mode.
Correct.
Yes I've noticed some filer on/off dependencies too. You are quite right, why would any filter be needed in continiuty tests.  :-//
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: sanman on October 13, 2015, 12:24:43 am
Page 96 of the SDM3055 User Manual talks about Application of the Analog Filter and specifies the introduced error.

Is the reading of 0.007mV within spec?
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: Eric-H on October 15, 2015, 06:02:07 pm
Page 96 of the SDM3055 User Manual talks about Application of the Analog Filter and specifies the introduced error.

I think you are right, this describes the effect I'm seeing! So it is probably not a digital software filter that is used, but an analog filter in hardware that is activated.

I checked the manual for the other effect I mentioned (jump in measured temperature, see my earlier post). The manual states the dmm measures the cold junction temperature. Could it be that this is measured only once when entering temperature mode? So when you measure for a longer time and the cold junction temperature changes, the dmm doesn't compensate for it while being in the temperature mode. Only when you leave the mode and re-enter it, the cold junction compensation is done again.
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: rf-loop on October 16, 2015, 05:25:29 am

Is the reading of 0.007mV within spec?

Yes.

Most low VDC range is 200mV
Specifications: Accuracy: +/-  0.015% from reading + 0.004% from range.
If reading (input V) is zero.  It can still display +/- 8uV (0.008mV)
(also there is specs for temp and temp coefficient)

If range is 200mV DC and  input voltage is 100mV exactly it may display between 99.977 and 100.023 and it is as specified (if cal temp have been +23 and it is now in +18 to +28 temp and if it have been least half hour on.)   

Also it need note that measurement need follow example these "thumb of rules" and something more  in this manual for Basic Fundamentals of measurements.

http://www.keithley.com/knowledgecenter/knowledgecenter_pdf/LowLevMsHandbk.pdf (http://www.keithley.com/knowledgecenter/knowledgecenter_pdf/LowLevMsHandbk.pdf)

Look example page 3-3 about avoiding Thermoelectric EMFs as error source  for low voltage measurements.

Title: Re: Siglent NEW Bench DMM SDM3055
Post by: Siglent America on October 16, 2015, 01:40:35 pm
Page 96 of the SDM3055 User Manual talks about Application of the Analog Filter and specifies the introduced error.

I think you are right, this describes the effect I'm seeing! So it is probably not a digital software filter that is used, but an analog filter in hardware that is activated.

I checked the manual for the other effect I mentioned (jump in measured temperature, see my earlier post). The manual states the dmm measures the cold junction temperature. Could it be that this is measured only once when entering temperature mode? So when you measure for a longer time and the cold junction temperature changes, the dmm doesn't compensate for it while being in the temperature mode. Only when you leave the mode and re-enter it, the cold junction compensation is done again.


Hi Eric.
Your assumptions were indeed correct.
The SDM3055 does use an analog filter that engages when the unit is powered up. The filter can improve the measurement accuracy when measuring DC voltage which has some ripple on it. We calibrate the DMM when the filter is turned off so there is a small error when the filter is turned on. You can, of course, use the Relative function to null this small offset out of you measurement.

On your thermocouple question, we do use a TI IC to measure the ambient (cold junction) temperature and use this value to compensate the measured temperature value. The 3055 continues to look up the cold-junction value throughout the Temperature measurement. We are still looking into this problem to find the reason for the offset but it is proving to be difficult for us to reproduce in our lab. We will continue to work at it in order to solve this offset problem.
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: Eric-H on October 19, 2015, 04:59:57 pm
On your thermocouple question, we do use a TI IC to measure the ambient (cold junction) temperature and use this value to compensate the measured temperature value. The 3055 continues to look up the cold-junction value throughout the Temperature measurement. We are still looking into this problem to find the reason for the offset but it is proving to be difficult for us to reproduce in our lab. We will continue to work at it in order to solve this offset problem.

If I can provide any information to help you to reproduce the problem please let me know.
I just measure the temperature for 10+ minutes, then switch to VDC mode and immdiately back to temperature mode. If I measure the temperature for a few hours, I've seen the temperarture jump for as much as 3 deg C. The ambient room temperarture may have changed an equal amount in that time (but I'm not sure of that).
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: Eric-H on October 20, 2015, 01:30:38 pm
I've checked some values for the temperature jump effect. I recorded the temperature together with the voltage.

After powering up the unit, I get after 5 minutes a temperature value of 15.8 deg C (-5.8 uV) after switching to VDC and back to temperature I get a value of 16.4 deg C (-5.1 uV).

After another 10 minutes,  I get a temperature value of 14.4 deg C (-81.6 uV) after switching to VDC and back to temperature I get a value of 16.0 deg C (-78.4 uV).

So it seems the measured voltage is stable (and correct), but the corresponding temperature has an offset. During the measurement the room temperature was stable at about 16 deg C (checked with another thermometer).

I hope this might help in diagnosing the problem...
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: Muttley Snickers on October 22, 2015, 07:41:58 am
Our dear friend Martin Lorton now has a third video posted on the Siglent SDM-3055 with the new faster firmware.

I'm off to watch it..... :popcorn:

https://www.youtube.com/watch?v=wtb3qUtgxCI (https://www.youtube.com/watch?v=wtb3qUtgxCI)
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: ahnatiw on October 27, 2015, 02:03:29 am
Hi Everyone,

I have been comparing the SDM-3055 to my Agilent 34461A and noticed that the trend chart is not updating the display correctly when viewing ALL trend data.  Attached are some photos of both units.  I noticed this first with the R13 firmware. I also updated to the latest firmware version (15R1) and the bug is still present.  The firmware is getting more stable, but it looks like there are still a few more major bugs to be squashed.

Has anyone else observed this issue?

I can confirm that each individual sample agrees to within approximately 0.1 mV, it just appears that the routine updating the display is not working correctly.

Cheers,

Al
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: tautech on October 27, 2015, 02:48:39 am
Welcome to the forum.

Thanks for the feedback, I'll make sure Siglent is informed.
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: ahnatiw on October 28, 2015, 02:47:15 am
Thanks tautech ... I have been lurking on the forums for years, but never got around to registering or posting stuff.

Following up on the trend chart issue, I also saved the captured data to a USB stick and verified that the data collected is correct, so the bug is isolated to the graph updating routine.

I did notice another issue, this time with the acquisition delay.  If you change it to manual mode and try to set the delay to 10 s by changing the unit from us to ms and then to S, it does not work - the value is not altered or applied (you can watch the trigger indicator at the top of the display).  However, if you stay on the us scale and just keep increasing the number to 1000 us, then 100 000 us, it automatically changes units and applies the delay correctly.  The next problem is that if you try to set the unit prefix back to say ms, it does not work.  The range is stuck in seconds and a reboot is necessary to reset the state.

Sorry if the description is a bit convoluted, but even taking photos does not really help.

Cheers,

Al
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: Eric-H on October 28, 2015, 08:49:32 am
I have been comparing the SDM-3055 to my Agilent 34461A and noticed that the trend chart is not updating the display correctly when viewing ALL trend data.  Attached are some photos of both units.  I noticed this first with the R13 firmware. I also updated to the latest firmware version (15R1) and the bug is still present.  The firmware is getting more stable, but it looks like there are still a few more major bugs to be squashed.

Has anyone else observed this issue?

Yep, I see the same issue.
I checked using a function generator that outputs a ramp with a period of 15 minutes. On the trend chart I see, after a few hours, that the display "squeezes" the data. The oldest data (on the left) is stretched, while the newest data (on the right) is compressed.
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: tautech on October 28, 2015, 09:28:50 am
Thanks guys  :-+ keep the info coming.
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: Siglent America on October 28, 2015, 01:51:51 pm
Hi Everyone,

I have been comparing the SDM-3055 to my Agilent 34461A and noticed that the trend chart is not updating the display correctly when viewing ALL trend data.  Attached are some photos of both units.  I noticed this first with the R13 firmware. I also updated to the latest firmware version (15R1) and the bug is still present.  The firmware is getting more stable, but it looks like there are still a few more major bugs to be squashed.

Has anyone else observed this issue?

I can confirm that each individual sample agrees to within approximately 0.1 mV, it just appears that the routine updating the display is not working correctly.

Cheers,

Al
Hello Al.
Thank you for reporting this.
Engineering is aware of the issue and i am told they are testing for a solution now. If I hear anything soon I will let you know. Otherwise, you might check our FW versions from time to time.
Steve
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: Siglent America on October 28, 2015, 01:55:00 pm
Thanks tautech ... I have been lurking on the forums for years, but never got around to registering or posting stuff.

Following up on the trend chart issue, I also saved the captured data to a USB stick and verified that the data collected is correct, so the bug is isolated to the graph updating routine.

I did notice another issue, this time with the acquisition delay.  If you change it to manual mode and try to set the delay to 10 s by changing the unit from us to ms and then to S, it does not work - the value is not altered or applied (you can watch the trigger indicator at the top of the display).  However, if you stay on the us scale and just keep increasing the number to 1000 us, then 100 000 us, it automatically changes units and applies the delay correctly.  The next problem is that if you try to set the unit prefix back to say ms, it does not work.  The range is stuck in seconds and a reboot is necessary to reset the state.

Sorry if the description is a bit convoluted, but even taking photos does not really help.

Cheers,

Al

I'll report this as well.
Thanks
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: Muttley Snickers on November 05, 2015, 10:21:14 am
For those that haven't seen it yet Martin Lorton has a follow up video in regards to the SDM-3055 firmware versions P15R1 and P15R2.

https://www.youtube.com/watch?v=ZRZgGPQZZkE (https://www.youtube.com/watch?v=ZRZgGPQZZkE)
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: Eric-H on November 05, 2015, 06:41:53 pm
First a big thanks to Siglent as they fixed my reported problem were the measuring temperature jumped when switching between DCV and temperature. In a new release 15 R2 this problem is fixed  :)

It did not change another effect I see during temperature measurement. See attached screen shot. The measurered value jumpes in 0.5 deg steps up and down before settling on the new value. I suspect it might not be a problem but the effect of the cold junction compensation which might be done in 0.5 deg steps. It is within spec but it looks strange.

What do you think?
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: MartinX on November 05, 2015, 09:34:41 pm
Hmmm, as I interpret Martin Lortons video when the filter is activated a capacitor is connected to the input terminals? Thus loading the measured voltage with a substantial capacitance? That sounds really crusty, I hope I got this wrong.
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: Elrod on November 12, 2015, 02:54:03 pm
Just received my Siglent SDM3055 yesterday.  I immediately updated the firmware to the latest (1.01.01.15R1).  I left the unit in continuity mode when I shut it down last night.  This morning when I turned it on it went to beeping like crazy with random low resistance readings on the screen.  I assumed the leads just happened to be touching but they were not.  I unplugged the leads and it still kept beeping.   I shut it off and then back on.  It came up in DC volts and everything seemed normal.  Tried to duplicate and it didn't have the issue.   Tried it again and sure enough the problem is back.  As I type it is going crazy.  I will record a short video.  Has anyone else seen this?  Can anyone else check there unit for this behaviour?

Elrod
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: tautech on November 13, 2015, 02:18:03 am
Just received my Siglent SDM3055 yesterday.  I immediately updated the firmware to the latest (1.01.01.15R1).  I left the unit in continuity mode when I shut it down last night.  This morning when I turned it on it went to beeping like crazy with random low resistance readings on the screen.  I assumed the leads just happened to be touching but they were not.  I unplugged the leads and it still kept beeping.   I shut it off and then back on.  It came up in DC volts and everything seemed normal.  Tried to duplicate and it didn't have the issue.   Tried it again and sure enough the problem is back.  As I type it is going crazy.  I will record a short video.  Has anyone else seen this?  Can anyone else check there unit for this behaviour?

Elrod
Most unusual.  :o
Can you confirm FW 15R1 is shown in the UI as the installed FW?

I'll also point Siglent to your post.
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: Eric-H on November 13, 2015, 07:49:17 am
Has anyone else seen this?  Can anyone else check there unit for this behaviour?
Elrod

I checked my meter and saw the same behaviour. I used firmware 15R2, but also saw it with older versions.
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: tautech on November 13, 2015, 08:33:46 am
Has anyone else seen this?  Can anyone else check there unit for this behaviour?
Elrod

I checked my meter and saw the same behaviour. I used firmware 15R2, but also saw it with older versions.
Siglent informs me this may be another bug and they are fixing it ATM.

Eric, Where did you get 15R2, I could not find a download link for it?
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: Eric-H on November 13, 2015, 10:14:48 am
Eric, Where did you get 15R2, I could not find a download link for it?

I got it directly from Siglent as a pre release test for the fix they made in measuring the tempearure. They said it will be available from their site...
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: Elrod on November 13, 2015, 01:06:41 pm
Tautech I can confirm my version is 15R1.
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: Elrod on November 29, 2015, 04:11:35 am
Anyone have any news on when an updated firmware might be released for the SDM3055?  The last update was September I believe.
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: tautech on November 29, 2015, 06:28:42 am
Anyone have any news on when an updated firmware might be released for the SDM3055?  The last update was September I believe.
Looking through my emails of a couple of weeks ago, Jexy from Siglent said ~ 1 month, so hopefully before Xmas.
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: EEVblog on December 03, 2015, 07:56:41 am
I don't see the similarity

(https://www.eevblog.com/forum/testgear/siglent-new-bench-dmm-sdm3055/?action=dlattach;attach=185200;image)
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: Muttley Snickers on December 03, 2015, 08:04:11 am
There is a fellow back on page one that does..... ::)
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: ElektronikLabor on December 03, 2015, 08:08:35 am
I don't see the similarity
I'm shocked, that Keysight imitate other gear in a such bluntly way  :-DD
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: tautech on December 03, 2015, 08:52:57 am
There is a fellow back on page one that does..... ::)
:-DD
One's a 6 1/2 digit meter and obviously trying to gain advantage with a take off of the Siglent name.  :)
Couldn't stand the heat and changed their name to Key...something I heard.
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: pascal_sweden on December 03, 2015, 12:49:26 pm
They missed the 3A input :)
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: sotos on December 03, 2015, 01:30:19 pm
The Siglent is not a truevolt, maybe a fake one.  :-DD :-DD
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: sotos on December 03, 2015, 01:31:55 pm
Also a side by side board comparison will show something.
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: tautech on December 04, 2015, 05:47:42 am
Also a side by side board comparison will show something.
Pics and links to do this are available earlier in this thread in this post:
https://www.eevblog.com/forum/testgear/siglent-new-bench-dmm-sdm3055/msg637615/#msg637615 (https://www.eevblog.com/forum/testgear/siglent-new-bench-dmm-sdm3055/msg637615/#msg637615)
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: kj7e on December 08, 2015, 08:08:55 pm
I was on the fence between a used 34401a and the SDM3055.  I really wanted a 34461a but I could not find a used one and spending >1K was not going to happen as this is just a hobby for me.  I dont need 6.5 digits or .0035% DC accuracy but that screen and the math functions are a real selling point.   After seeing how Siglent has been actively addressing the firmware bugs and making improvements (especially to the display speed), I put my order in yesterday.  I also want to thank those who have taken the time to do video reviews and updates as I found them very helpful and also directly responsible for making up my mind.   Keep up the good work!

Damon
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: tautech on December 08, 2015, 08:18:26 pm
Welcome to the forum.

It would be good if you could post your findings once you have it for others to see, good or bad it doesn't matter, feedback is how products are improved.
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: Muttley Snickers on December 08, 2015, 10:38:58 pm
I cant remember if I have asked these questions before on the forum but I do know that I did ask them at one point.

Does anybody know whether the user software applies a time stamp to logged events, the unit itself does not have a real time clock but does the software incorporate and apply one to recordings, also the user manual refers to 1,000 logged events yet the remote manual makes reference to 10,000 and are these saved in memory after a restart or lost for good.

Thanks

 Edit: I found this post in reference to time stamps.

https://www.eevblog.com/forum/testgear/siglent-sdm3055-multimeter-scpi-commands-and-python/msg733179/#msg733179 (https://www.eevblog.com/forum/testgear/siglent-sdm3055-multimeter-scpi-commands-and-python/msg733179/#msg733179)

Title: Re: Siglent NEW Bench DMM SDM3055
Post by: kj7e on December 10, 2015, 10:24:47 pm
UPS just showed up with my new meter (after getting lost for a few days).  Question, Should the meter rattle, like there's a match box hot wheels car surprise inside the box?  :palm:

First call to the vendor, they want to make a claim with UPS, but the boxes look decent.  I suspect from the sounds the voltage reference screw and shield worked its way loose and is flopping around.  It would have been nice if the vendor (us based vendor) would have immediately issued a call tag and new meter next day air.  I let the rep hear the rattle, took video and photos of the still factory wrapped box clunking.  May be a simple fix, but who knows if any other components have been damaged internally.  I prefer not to break any seals and just get a new one.


Video;
https://www.youtube.com/watch?v=e3duzHetR24 (https://www.youtube.com/watch?v=e3duzHetR24)
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: tautech on December 10, 2015, 10:36:35 pm
UPS just showed up with my new meter (after getting lost for a few days).  Question, Should the meter rattle, like there's a match box hot wheels car surprise inside the box?  :palm:

First call to the vendor, they want to make a claim with UPS, but the boxes look decent.  I suspect from the sounds the voltage reference screw and shield worked its way loose and is flopping around.  It would have been nice if the vendor (us based vendor) would have immediately issued a call tag and new meter next day air.  I let the rep hear the rattle, took video and photos of the still factory wrapped box clunking.  May be a simple fix, but who knows if any other components have been damaged internally.  I prefer not to break any seals and just get a new one.
Shite, that's not on.  :rant:
For the life of me I can't think what that might be other than a lead that has come off.  :-//
Checked my images in Reply #15 for clues, and maybe it's the Ali cover on the input stages on the main PCB.
https://www.eevblog.com/forum/testgear/siglent-new-bench-dmm-sdm3055/msg637615/#msg637615 (https://www.eevblog.com/forum/testgear/siglent-new-bench-dmm-sdm3055/msg637615/#msg637615)

If it is, DON'T power it up.

After watching the vid, yep sounds like that Ali cover.

I'll link your post to Siglent America.
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: kj7e on December 10, 2015, 10:45:13 pm
Yeah, I suspect its the aluminum cover, its got that kind of sound to it.  No, I'm not even going to unwrap it.  Who knows what it been beating up internally.  Id just like a replacement.
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: tautech on December 10, 2015, 10:52:06 pm
Yeah, I suspect its the aluminum cover, its got that kind of sound to it.  No, I'm not even going to unwrap it.  Who knows what it been beating up internally.  Id just like a replacement.
Not sure if Steve will reply to this tonight, but at least he knows about it now and should monitor how his vendor makes good for you.
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: Muttley Snickers on December 10, 2015, 10:53:59 pm
That's a shocker..... :o

You are damned lucky that it didn't simply wedge itself in a position so as not to make a rattle and not be discovered until power up.... :phew:

Don't turn it on, shake the shit out of it..... :rant:

Title: Re: Siglent NEW Bench DMM SDM3055
Post by: kj7e on December 10, 2015, 11:04:22 pm
I called back the vendor to infer it was not damaged in shipping, rather its a defective unit.  The CS Rep called Steve but there was no answer, she was going to email him and ask how to best proceed.   Im sure it will be resolved, I'm Just a bit disappointed, you know, like a kid at Christmas only to find out its not gift he has been wishing for.
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: tautech on December 10, 2015, 11:06:46 pm
That's a shocker..... :o

You are damned lucky that it didn't simply wedge itself in a position so as not to make a rattle and not be discovered until power up.... :phew:

Don't turn it on, shake the shit out of it..... :rant:
What's worse Pete, this is a terrible first impression.  :scared:
Answers must be found as to why this occurred. QA looks like they missed this.  |O

I called back the vendor to infer it was not damaged in shipping, rather its a defective unit.  The CS Rep called Steve but there was no answer, she was going to email him and ask how to best proceed.   Im sure it will be resolved, I'm Just a bit disappointed, you know, like a kid at Christmas only to find out its not gift he has been wishing for.
Steve will have finished for the day now, it's after 6 pm in Ohio.
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: Siglent America on December 11, 2015, 01:22:20 pm
I called back the vendor to infer it was not damaged in shipping, rather its a defective unit.  The CS Rep called Steve but there was no answer, she was going to email him and ask how to best proceed.   Im sure it will be resolved, I'm Just a bit disappointed, you know, like a kid at Christmas only to find out its not gift he has been wishing for.

Good morning,
Our policy at Siglent America is that if a unit arrives with a problem (not related to shipping damage) or develops one within the first 30 days then the distributor should send the customer a replacement unit. No one called or emailed me about this.

Please go back to your distributor and tell them this - they should know this already and have them call me directly. If they do not take care of you properly then please contact me directly at 877.515.5551 and I will see that you are taken care of.
I will also forward this email to the distributor myself.

Thank you.
Steve
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: kj7e on December 11, 2015, 02:45:46 pm
Thank you Steve! I had the name wrong, it was Scott the CS rep tried to contact.  I will contact the CS Rep this morning again.  As much as I'd like to place the blame on UPS, it does not appear to be shipping damage.

Edit: Update,
The vendor sent me a UPS call tag and I should have a new replacement mid next week.
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: ShreveCC on December 11, 2015, 11:41:46 pm
Not an exact copy or clone, but can you at least see the inspiration for the Siglent team? 

I was drooling on the Agilent meter when you reviewed it, however at the $1000+ for my "hobby"-  as my wife views it -.... ahhh....

:scared: the wife would have made a "single trigger" shot for my balls.  It was much easy to budget and sell the wife on the SDM3055. 

It also seem to me; that I am one of the few that actual love working with this meter.  Yes its true... its still not an Aglient which has years of refinement in building test equipment.

Title: Re: Siglent NEW Bench DMM SDM3055
Post by: kj7e on December 12, 2015, 01:41:08 am
I know Dave had been debating doing a tear down on his SDM3055 since there where several others already.  He posted one today;

http://www.eevblog.com/2015/12/12/eevblog-829-siglent-sdm3055-bench-multimeter-teardown/ (http://www.eevblog.com/2015/12/12/eevblog-829-siglent-sdm3055-bench-multimeter-teardown/)

https://www.youtube.com/watch?v=6nqSFYVKnP4 (https://www.youtube.com/watch?v=6nqSFYVKnP4)
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: kj7e on December 18, 2015, 04:28:44 pm
Had a chance to play with the replacement meter last night and this morning.  Came with 11r1 FW, updated it to 15r1 first thing.  Initial impressions are quite good, but I wish I could adjust the display contrast some.  Mine seems too bright and the black background is a bit washed out and grayish.  Good visibility at side viewing angles however.

Some other initial thoughts;
- The bar-graph is too slow and slows down the display readout when active, so this function is not really useful as is.  I like really fast bar meters to emulate an analog needle.
- The fast/med/slow display rate is about perfect for me with the 15R1 FW (as long as the bar-graph is disabled, see above)
- The Ethernet icon should disappear if your disable the LAN in the I/O settings.
- Love the trend chart and histogram, will need to play this this more today.
- Very good overall feel/look, great buttons.  Intuitive layout and UI (Agilent did a good job here).
- DC accuracy is good, well within spec but reads ever so slightly low (~20uV on the 20V scale, or 2 counts out) compared to my voltage ref and Fluke 189 (which agrees with my voltage ref).

AD584LH Ref          SDM3055
2.49986                 2.4997
5.00151                 5.0013
7.50077                 7.500[56]
10.00201               10.0018

At 20deg C, meter powered on overnight.

Only had a short time to play with it, will update if I find anything else later.  So far I like it.


*** Edit: Update ***
I take back what I said about the washed out and grayish display, turns out its not due to too much brightness or lack of contrast. On the standard numeric display, the background is a dark gray and not black.  On the trend chart the background is black and you can see the dark gray bordering the trend chart box.

The slight error in DC accuracy was due to the temperature drift in my reference.  I played with cooling and warming the reference and can see the drift plain as day on the trend chart.  Once at the cal temp, the meter is spot on.

I have not tested the continuity speed on older FW, but on 15R1 the continuity beep is very fast.  I suspect the continuity speed was also improved with the display speed on the new FW.





Title: Re: Siglent NEW Bench DMM SDM3055
Post by: tautech on December 18, 2015, 07:06:14 pm
Had a chance to play with the replacement meter last night and this morning.  Came with 11r1 FW, updated it to 15r1 first thing.  Initial impressions are quite good, but I wish I could adjust the display contrast some.  Mine seems too bright and the black background is a bit washed out and grayish.  Good visibility at side viewing angles however.

Some other initial thoughts;
- The bar-graph is too slow and slows down the display readout when active, so this function is not really useful as is.  I like really fast bar meters to emulate an analog needle.
- The fast/med/slow display rate is about perfect for me with the 15R1 FW (as long as the bar-graph is disabled, see above)
- The Ethernet icon should disappear if your disable the LAN in the I/O settings.
- Love the trend chart and histogram, will need to play this this more today.
- Very good overall feel/look, great buttons.  Intuitive layout and UI (Agilent did a good job here).
- DC accuracy is good, well within spec but reads ever so slightly low (~20uV on the 20V scale, or 2 counts out) compared to my voltage ref and Fluke 189 (which agrees with my voltage ref).

AD584LH Ref          SDM3055
2.49986                 2.4997
5.00151                 5.0013
7.50077                 7.500[56]
10.00201               10.0018

At 20deg C, meter powered on overnight.

Only had a short time to play with it, will update if I find anything else later.  So far I like it.
Good to hear you got the replacement unit quickly.

Re the LAN indicator.
Yes, it's on all the time.
Did you see part of it shows red but when connected to a LAN this indicator then assumes just one colour?
This active LAN indicator is a recent addition to all Siglent LAN capable products.

Now, at a glance one can identify if you have an active LAN connection or not, and one might wonder why you'd want to turn off ALL indication of the instrument's LAN connection state?

Title: Re: Siglent NEW Bench DMM SDM3055
Post by: kj7e on December 18, 2015, 07:11:40 pm
Im fine with the red x on the LAN icon if the LAN is enabled and there is no link.  What I would prefer is the LAN icon to disappear from the screen (like the USB icon does) if the LAN is disabled in the I/O setting. 
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: Muttley Snickers on December 18, 2015, 07:36:03 pm
Very nice and honest preliminary review kj7e and very much appreciated.... :-+

I wanted a stand alone graphing meter mainly for extended duration logging and as history shows I have been more than tempted on a number of occasions to swing towards the SDM-3055, glad now that I waited until others had established it's place in the pecking order and I'm still in need of a mains powered bench unit for field work.

To fill the void I have a 289 on the way and should have it early this coming week, l love the 189s and will never part with these, just a great meter.

Keep the information coming If you can as we are yet to see how these go over time, unfortunately with the exchange rate down here they are no longer a cheap alternative meter for a hobbyist and professionals that can claim them as part of the business generally dont mind spending a bit more for established equipment.

Many thanks and seasons greetings.

Muttley

Title: Re: Siglent NEW Bench DMM SDM3055
Post by: tautech on December 18, 2015, 07:43:09 pm
Im fine with the red x on the LAN icon if the LAN is enabled and there is no link.  What I would prefer is the LAN icon to disappear from the screen (like the USB icon does) if the LAN is disabled in the I/O setting.
I get that, yes the USB icon only shows when a connection is made BUT only when a memory stick is connected to the front panel USB, not for rear panel USB to PC connections.
Should this be changed to indicate BOTH front AND rear USB connection?


AFAIK you're the first (on EEVblog) to have asked for this and I do understand everyone each have their preferences for how they like their instrument to behave.
I do see your point however, there is a LAN ON/OFF toggle in the UI and when OFF one might expect the LAN indicator to disappear.

Anyway..... Noted. Will forward to Siglent.


Title: Re: Siglent NEW Bench DMM SDM3055
Post by: kj7e on December 18, 2015, 07:51:00 pm
Thanks Muttley,  I also have a 289, its a few years newer than my 189 but the 189 seems to have drifted less than the 289. Both killer handheld DMMs for sure.  I have a UNI-T un171b on order as well, just wants something not as valuable to toss around.  I had a HP 34401a 10 years ago, paid $250 for it and it was like new (surplus Gov contract deal).  Like a fool I sold it when I moved to a new job and state.  I dont need a 6.5 digit .0035% DMM, and its just a hobby for me, so the SDM3055 should work out well.

I've warmed my room up a few deg, it seems the meter and voltage ref are now within one digit, cant ask for much more than that.  One thing I forgot to mention above, the fan is not a bother at all, very quiet.
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: kj7e on December 18, 2015, 08:04:44 pm
Im fine with the red x on the LAN icon if the LAN is enabled and there is no link.  What I would prefer is the LAN icon to disappear from the screen (like the USB icon does) if the LAN is disabled in the I/O setting.
I get that, yes the USB icon only shows when a connection is made BUT only when a memory stick is connected to the front panel USB, not for rear panel USB to PC connections.
Should this be changed to indicate BOTH front AND rear USB connection?


AFAIK you're the first (on EEVblog) to have asked for this and I do understand everyone each have their preferences for how they like their instrument to behave.
I do see your point however, there is a LAN ON/OFF toggle in the UI and when OFF one might expect the LAN indicator to disappear.

Anyway..... Noted. Will forward to Siglent.

Since the rear USB was intended for the GPIB dongle, I think the USB icon should only display with the front USB port.  The LAN icon is not a big deal, just something I noticed and thought would be a nice touch up item.
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: Muttley Snickers on December 18, 2015, 08:11:48 pm
I thought that the GPIB dongle was an A/ front port interface and the B/ rear port was only for the pc, that was the indication given earlier in the thread.
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: tautech on December 18, 2015, 08:17:21 pm
Im fine with the red x on the LAN icon if the LAN is enabled and there is no link.  What I would prefer is the LAN icon to disappear from the screen (like the USB icon does) if the LAN is disabled in the I/O setting.
I get that, yes the USB icon only shows when a connection is made BUT only when a memory stick is connected to the front panel USB, not for rear panel USB to PC connections.
Should this be changed to indicate BOTH front AND rear USB connection?


AFAIK you're the first (on EEVblog) to have asked for this and I do understand everyone each have their preferences for how they like their instrument to behave.
I do see your point however, there is a LAN ON/OFF toggle in the UI and when OFF one might expect the LAN indicator to disappear.

Anyway..... Noted. Will forward to Siglent.

Since the rear USB was intended for the GPIB dongle, I think the USB icon should only display with the front USB port.  Its not a big deal, just something I noticed and thought would be a nice touch up item.
Not only GPIB.
EasyDMM software can be used via LAN and USB connection and instrument control can be achieved with EasyDMM using either connection. If FW was to be modified as you suggest I see no reason why a rear USB connection indication could not be added too.

Do you not agree?
I thought that the GPIB dongle was an A/ front port interface and the B/ rear port was only for the pc, that was the indication given earlier in the thread.
Quite right Pete, just checked my GPIB dongle, it has a tethered USB A cable and therefore must be used in the front panel USB.
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: kj7e on December 18, 2015, 08:21:41 pm
^ Sounds fair enough to me.
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: Muttley Snickers on December 18, 2015, 08:34:31 pm
Thanks tautech, that picture of the dongle on the Siglent site which is linked earlier in the thread does not show an intergrated cable affixed and gives the impression that the dongle has either an A or B USB receptacle.

I always imagined that it was exactly the same as the Keysight GPIB dongle.
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: tautech on December 18, 2015, 08:52:39 pm
Thanks tautech, that picture of the dongle on the Siglent site which is linked earlier in the thread does not show an intergrated cable affixed and gives the impression that the dongle has either an A or B USB receptacle.

I always imagined that it was exactly the same as the Keysight GPIB dongle.
Quite so Muttley.

I've added to a report to Siglent that the GPIB adapter need have USB B type connection for use with the rear USB B so to keep the front panel USB A connection available for USB memory sticks and such.

Even if the GPIB adapter had an USB A socket instead of the USB A tethered cable then the supplied Siglent USB A to B universal cable could be used with the rear USB B connection and then free the front USB A connector while GPIB is in use.

Edit
Further explanation.
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: kj7e on December 18, 2015, 09:06:54 pm
Very nice!  Even though the display is limited to 5.5 digits at 240,000 counts, you can extract extra resolution via the histogram.

Here I am measuring my 2.49986v reference, the display is limited 2.4998v but by setting the span and center for the histogram I'm able to see the average reading is really closer to 2.499831v.  Of course this is well beyond the rated accuracy and stability of the internal reference, but that's still cool.  I figure that's within .0012%.
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: Muttley Snickers on December 18, 2015, 10:56:04 pm
Just so people know and don't have to go searching for information these are the pictures below of both USB-GPIB interfaces since the release of the product excluding the onboard GPIB which was never released, the first Batronix picture appears to be the current and correct adapter provided with the SDM-3055A, the second image is from the Siglent US site and may not be correct as far as I can tell, the main Siglent site shows either no picture at all, conflicting images or the incorrect one depending on which route you take.

I don't know anything about their USB-GPIB interfaces for the scopes, it could be either one.

Title: Re: Siglent NEW Bench DMM SDM3055
Post by: tautech on December 18, 2015, 11:17:55 pm
Just so people know and don't have to go searching for information these are the pictures below of both USB-GPIB interfaces since the release of the product excluding the onboard GPIB which was never released, the first Batronix picture is the current and correct adapter provided with the SDM-3055A, the second image is from the Siglent US site and is not correct as far as I can tell, the main Siglent site shows either no picture at all, conflicting images or the incorrect one depending on which route you take.

I don't know anything about their USB-GPIB interfaces for the scopes, it could be either one.
Thanks Muttley.

All Siglent products that are GPIB capable use this same GPIB adapter, it is an Accessory for most products although the SDM3055 range are the only Siglent products at this time offered with or without it: 3055S or 3055A.

http://www.siglentamerica.com/prodcut-fjxx.aspx?fjid=403&id=1369&tid=1&T=2 (http://www.siglentamerica.com/prodcut-fjxx.aspx?fjid=403&id=1369&tid=1&T=2)
RRP is US$155 + taxes if any.
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: alank2 on December 19, 2015, 04:08:27 am
Very nice!  Even though the display is limited to 5.5 digits at 240,000 counts, you can extract extra resolution via the histogram.

Here I am measuring my 2.49986v reference, the display is limited 2.4998v but by setting the span and center for the histogram I'm able to see the average reading is really closer to 2.499831v.  Of course this is well beyond the rated accuracy and stability of the internal reference, but that's still cool.  I figure that's within .0012%.

That is cool; can you extract more precision via LAN/SCPI commands?
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: kj7e on December 19, 2015, 05:30:15 pm
^ Alank2, Im not sure.

Update to my first impressions found here: https://www.eevblog.com/forum/testgear/siglent-new-bench-dmm-sdm3055/msg824341/#msg824341 (https://www.eevblog.com/forum/testgear/siglent-new-bench-dmm-sdm3055/msg824341/#msg824341)

I take back what I said about the washed out and grayish display, turns out its not due to too much brightness or lack of contrast. On the standard numeric display, the background is a dark gray and not black.  On the trend chart the background is black and you can see the dark gray bordering the trend chart box.

The slight (but very well with in spec) error in DC accuracy was due to the temperature drift in my reference.  I played with cooling and warming the reference and can see the drift plain as day on the trend chart.  Once at the cal temp, the meter is spot on.

I have not tested the continuity speed on older FW, but on 15R1 the continuity beep is very fast.  I suspect the continuity speed was also improved with the display speed on the new FW.

Feature request, it would be handy to have a way to quickly zero out the highlighted digits when adjusting settings such as the span or center voltages rather than having to use the up and down.  Maybe by pressing the center OK button would set the highlighted digit to zero.

Title: Re: Siglent NEW Bench DMM SDM3055
Post by: kj7e on December 28, 2015, 09:20:16 pm
New DMMCheck Plus just showed up in the mail today  :-+

           DMMCheck     SDM3055
VDC     5.0000          4.99998
VAC     4.999            4.9991
Hz       100.004800   100.00, 9.9995ms (100.00500Hz)
mAAC  1.0003          0.9997
mADC  1.0003          1.00023
Ohm    99.981          99.975
Ohm    999.79          999.75
kOhm  10.0008        10.0003
kOhm  100.034        100.038
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: kj7e on January 19, 2016, 01:21:48 am
I was reading where DR. Frank was doing some power on stability/warm-up time testes on the Keysight 34465a and 34470a, so I though I do a quick test on the SDM3055 (although not nearly as accurate as DR. Frank's).  Using the 5v DMMCheck Plus reference, powered on for several hours at 23deg C,  I powered on the SDM3055 and immediately switched to the trend chart with a manual vertical.  Here is the trend after 30min,  you can see it SDM3055 settled down in about 6 min and only drifted about 25uV.  Span = 200uV full scale.

Start up = 5.000030v
After 6min = 5.000005v
After 38min = 5.000005v

I noticed from early on, the MAX6325C reference has a very good TC.
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: Elrod on February 13, 2016, 01:49:41 pm
Has anyone heard anything about another firmware update for the SDM3055?  It's been quite a while.
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: tautech on February 13, 2016, 07:06:51 pm
Has anyone heard anything about another firmware update for the SDM3055?  It's been quite a while.
Yes, last one was 2015-09-29 and the next one will be due soon. Do you have any specific problems you are needing fixed?
The Siglent FW team are on Chinese New Year break ATM and are due back next week so we might know if there's been progress soon.
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: Elrod on February 14, 2016, 02:38:46 pm
The specific issue is placing the meter in Continuity mode and then shutting it down.  When I turn it back on it will go crazy beeping and clicking with random digits on display.
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: tautech on February 15, 2016, 09:22:28 am
The specific issue is placing the meter in Continuity mode and then shutting it down.  When I turn it back on it will go crazy beeping and clicking with random digits on display.
Yes, confirmed on my demo unit.
FW 15R1 with power on set to "Last".
Power on set to "Factory" does not replicate this bug.

Reported to Siglent.
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: tautech on February 18, 2016, 08:46:27 am
The specific issue is placing the meter in Continuity mode and then shutting it down.  When I turn it back on it will go crazy beeping and clicking with random digits on display.
I'm told by Siglent this issue has been resolved in the Beta of the next FW, so hopefully not too much longer to wait guys.

I'll let you all know when it's released or keep an eye out for it on the the Siglent FW page:
http://siglentamerica.com/gjjrj.aspx?id=15 (http://siglentamerica.com/gjjrj.aspx?id=15)
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: tautech on February 20, 2016, 07:46:41 am
See member mojoe's comments on the accuracy comparison between the 2 SDM3055 units that he owns:
https://www.eevblog.com/forum/metrology/siglent-sdm3055-comparison/ (https://www.eevblog.com/forum/metrology/siglent-sdm3055-comparison/)
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: markone on March 01, 2016, 03:37:34 pm
Despite having looked at several video review on YouTube and read most of posting in this 3ad is still unclear to me if the actual display refresh rate in slow mode with maximum precision settings is 1/s or 5/s.

In addition, for dual reading mode like DCV & DCI, is 1/s the max refresh rate regardless the settings ?
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: tautech on March 01, 2016, 07:38:39 pm
Despite having looked at several video review on YouTube and read most of posting in this 3ad is still unclear to me if the actual display refresh rate in slow mode with maximum precision settings is 1/s or 5/s.

In addition, for dual reading mode like DCV & DCI, is 1/s the max refresh rate regardless the settings ?
The display refresh rate was improved in a previous FW release after some criticism on reviews and ATM the trigger LED would seem to be flashing ~5/sec and the last significant digits appear to be updating at the same rate.(Slow refresh)

Dual readings remain the same; 1 range for 1s, then the other selected range for 1s, both of which are being updated at the user selected rate.
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: markone on March 01, 2016, 08:38:28 pm
The display refresh rate was improved in a previous FW release after some criticism on reviews and ATM the trigger LED would seem to be flashing ~5/sec and the last significant digits appear to be updating at the same rate.(Slow refresh)

Dual readings remain the same; 1 range for 1s, then the other selected range for 1s, both of which are being updated at the user selected rate.

Many thanks,

five per seconds could be considered fair enough but dual readings sequencing does not fit my need, i'll have to check if something else in the same price league, like the GW GDM-8351, is able to provide simultaneous readings for DCV & DCI.
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: nidlaX on March 01, 2016, 09:28:32 pm
The display refresh rate was improved in a previous FW release after some criticism on reviews and ATM the trigger LED would seem to be flashing ~5/sec and the last significant digits appear to be updating at the same rate.(Slow refresh)

Dual readings remain the same; 1 range for 1s, then the other selected range for 1s, both of which are being updated at the user selected rate.

Many thanks,

five per seconds could be considered fair enough but dual readings sequencing does not fit my need, i'll have to check if something else in the same price league, like the GW GDM-8351, is able to provide simultaneous readings for DCV & DCI.
Regarding the GDM-8351:

"When the multimeter is used in dual measurement mode, both displays are updated from either a single measurement or from two separate measurements. If the primary and secondary measurement modes have the same range, rate and rely on the same fundamental measurement, then a single measurement is taken for both displays; such as ACV and frequency/period measurements. If the primary and secondary displays use different measurement functions, ranges or rates, then separate measurements will be taken for each display. For example, ACV and DCV measurements."

Interpret that how you will, but it sounds like you will be faced with similar scanning behavior.
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: markone on March 01, 2016, 09:54:36 pm
"When the multimeter is used in dual measurement mode, both displays are updated from either a single measurement or from two separate measurements. If the primary and secondary measurement modes have the same range, rate and rely on the same fundamental measurement, then a single measurement is taken for both displays; such as ACV and frequency/period measurements. If the primary and secondary displays use different measurement functions, ranges or rates, then separate measurements will be taken for each display. For example, ACV and DCV measurements."

Interpret that how you will, but it sounds like you will be faced with similar scanning behavior.

I read that user manual part several times but i have to admit i struggle to understand the meaning, especially if i consider this following text :

"After the secondary measurement function has been activated, the rate, range and measurement item can be edited for either the primary or secondary display. Note however, it is more practical to configure the first or second measurement items before activating dual measurement mode."

I'm looking for web review, but it would appear there are none.
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: nctnico on March 01, 2016, 09:57:26 pm
It doesn't make sense to add an extra ADC and input stage for the dual measurement so I'm pretty sure all DMM will switch/scan between inputs (current or volt) for dual measurements.
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: tautech on March 01, 2016, 10:11:34 pm
"When the multimeter is used in dual measurement mode, both displays are updated from either a single measurement or from two separate measurements. If the primary and secondary measurement modes have the same range, rate and rely on the same fundamental measurement, then a single measurement is taken for both displays; such as ACV and frequency/period measurements. If the primary and secondary displays use different measurement functions, ranges or rates, then separate measurements will be taken for each display. For example, ACV and DCV measurements."

Interpret that how you will, but it sounds like you will be faced with similar scanning behavior.

I read that user manual part several times but i have to admit i struggle to understand the meaning, especially if i consider this following text :

"After the secondary measurement function has been activated, the rate, range and measurement item can be edited for either the primary or secondary display. Note however, it is more practical to configure the first or second measurement items before activating dual measurement mode."

I'm looking for web review, but it would appear there are none.
Sounds just like how the Siglent does it.

With the SDM3055, the secondary display/measurement in dual mode is much smaller than the primary measurement and selection of the primary measurement as the measurement of "most interest" is the way to get the most from the UI.
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: markone on March 01, 2016, 10:39:31 pm
It doesn't make sense to add an extra ADC and input stage for the dual measurement so I'm pretty sure all DMM will switch/scan between inputs (current or volt) for dual measurements.

I was not expecting a doubled ADC section but a sample&hold stage to allow at least DCV & DCI simultaneous sampling (with differed conversion, of course) to maintain measures phase, but it seems an exclusive land for power analyzer.

Of course two separate externally triggered DMM could be the solution but i'm trying to keep the budget within half a grand.

Title: Re: Siglent NEW Bench DMM SDM3055
Post by: nidlaX on March 01, 2016, 10:57:35 pm
It doesn't make sense to add an extra ADC and input stage for the dual measurement so I'm pretty sure all DMM will switch/scan between inputs (current or volt) for dual measurements.

I was not expecting a doubled ADC section but a sample&hold stage to allow at least DCV & DCI simultaneous sampling (with differed conversion, of course) to maintain measures phase, but it seems an exclusive land for power analyzer.

Of course two separate externally triggered DMM could be the solution but i'm trying to keep the budget within half a grand.
Get a mooshimeter and upgrade the input stage? :popcorn:
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: markone on March 02, 2016, 12:00:07 am
Get a mooshimeter and upgrade the input stage? :popcorn:

Very nice toy, for US price and availability it would worth an assessment for hobby works, but now i'm looking for a certified instrument with USB/serial interface and prompt EU sourcing.

I will sure keep in account for some other task, many thanks for the tip.
 

 
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: markone on March 06, 2016, 04:19:41 pm
Hmmm, as I interpret Martin Lortons video when the filter is activated a capacitor is connected to the input terminals? Thus loading the measured voltage with a substantial capacitance? That sounds really crusty, I hope I got this wrong.

I have a couple of questions about this matter :

1) does the "impedance perturbance" apply also for 100mV & 1V DCV high imp. mode (10Gohm) ?
2) which is the actual input capacitance with the HW filter turned on ? 

https://www.youtube.com/watch?v=ZRZgGPQZZkE (https://www.youtube.com/watch?v=ZRZgGPQZZkE) @ 07:30
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: tautech on March 07, 2016, 04:21:45 am
Hmmm, as I interpret Martin Lortons video when the filter is activated a capacitor is connected to the input terminals? Thus loading the measured voltage with a substantial capacitance? That sounds really crusty, I hope I got this wrong.

I have a couple of questions about this matter :

1) does the "impedance perturbance" apply also for 100mV & 1V DCV high imp. mode (10Gohm) ?
2) which is the actual input capacitance with the HW filter turned on ? 


1. In DCV the ranges available for 10 G Ohm input impedance are 200 mV and 2 V.
In either range the meter settling time is improved with fast sampling and the input filter on to ~2 sec or better. All sampling speeds have similar settling times with the filter on and the highest being slightly fastest.
Without filtering for these 10G input ranges, the last significant digit takes ~2 seconds to stabilise for the medium speed sampling whereas in fast sampling the last 2 significant digits take ~2 seconds to stabilise.

2. 1.1nF measured while in all the above mentioned ranges, filter on or off.
(Fluke 15B)

The display refresh rate was improved in a previous FW release after some criticism on reviews and ATM the trigger LED would seem to be flashing ~5/sec and the last significant digits appear to be updating at the same rate.(Slow refresh)

Dual readings remain the same; 1 range for 1s, then the other selected range for 1s, both of which are being updated at the user selected rate.

Many thanks,

five per seconds could be considered fair enough but dual readings sequencing does not fit my need, i'll have to check if something else in the same price league, like the GW GDM-8351, is able to provide simultaneous readings for DCV & DCI.
I know this is a few days old but I'm not sure if you understood my comments re the sampling update rate.
5/s is Slow mode
50/s is middle mode
150/s is Fast mode

All user definable for any range.
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: markone on March 07, 2016, 08:36:36 pm
1.1nF measured while in all the above mentioned ranges, filter on or off.

I know this is a few days old but I'm not sure if you understood my comments re the sampling update rate.
5/s is Slow mode
50/s is middle mode
150/s is Fast mode

Hi Tautech,

thanks for the summary, your comments about sampling rate were received loud and clear.

In the mean time i looked for a multimeter (not a power analyzer) capable of DCV & DCI dual reading function without mechanical relay's input scanning, among the "low cost" ones i found the Hameg HMC8012, though not brilliant for AC performance and price point; the guy responsible for that activity is now dealing with R&S representative.

But i'm still on the market for a NEW bench DMM for personal use, but there are still two things that prevent me to buy the SDM3055 :

1)  input capacitance & impedance transient : 1.1nF seems pretty high but i'm mainly worried about what happens during the filter's insertion (as spotted by Martin @ 07:30 https://www.youtube.com/watch?v=ZRZgGPQZZkE (https://www.youtube.com/watch?v=ZRZgGPQZZkE)), i still wonder if it happens also with low DCV ranges in HI Z mode, but in any case this is near to be a deal breaker for me.

2) actual screen's refresh rate : it seems quite far from declared numbers (that i assume to be valid for USB / LAN data exchange) even after the last FW update, at least judging on what i'm seeing on youtube; dunno if there is still room for improvements but i'm inclined to think that we will not see drastical changes.

I already have three handheld DMMs and from the incoming bench multimeter i expect / pretend :

1) variable ADC's precision / sampling rate (max sps >=100)
2) parameterizable ADC's samples filtering
3) fast actual screen update, at least on par with medium sampling rate
4) clear text and wide angle of view screen
4) high stability input impedance & HI-Z mode for DCV (>= 10Gohm)
5) external trigger input
6) PC interface
7) 4 wire resistance reading
8 ) decent VAC performance within 40-20000Hz Hz

To be honest i'm a bit biased toward old styled VFD display DMM's for text clarity, fast response and very wide angle of view, but at the same time i'm intrigued by features like trends chart and so on.

I cannot justify to myself a Keithley / Agilent ones for home dickering and there to much lemmons on used market to go in that way, this Siglent seems well equipped but some of the listed points are still not satisfied.
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: kj7e on March 12, 2016, 03:15:08 pm
^ For goodness sakes man, you are over analyzing this.  Its a darn fine meter for $400, accurate, fast enough for any home hobbyist (with the latest FW), and the display is really quite nice.  Your other option is to 2.5 times as much for a Keysight 3446x. 

The display refresh rate is plenty fast, faster than it looks on camera.  Martin is stuck on enabling the AC Filter, I never use it, not had a need for it.  IMO, the display is far easier to read then VFD or LED even.  You can read it easily from across the room at angels.
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: markone on March 13, 2016, 01:00:52 pm
^ For goodness sakes man, you are over analyzing this.

LOL, it could be the case, but everyone here tends to behave in such way  ;)

IMHO rust inside, "last setup" bug and input filter on/off impedance transient are quite important issues to me, of course it all depends on what you do.

But VFD displays usually have superior readability against lcd panels, if the SDM3055 one is like the SDG2000X's screen (that i own) then i'm quite convinced about that.

Anyway, talking about cost, here in EU the average street price from authorized dealers is much higher, around 535 Euro VAT included (600USD).
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: tautech on March 15, 2016, 12:54:23 am
^ For goodness sakes man, you are over analyzing this.

LOL, it could be the case, but everyone here tends to behave in such way  ;)

IMHO rust inside, "last setup" bug and input filter on/off impedance transient are quite important issues to me, of course it all depends on what you do.

But VFD displays usually have superior readability against lcd panels, if the SDM3055 one is like the SDG2000X's screen (that i own) then i'm quite convinced about that.

Anyway, talking about cost, here in EU the average street price from authorized dealers is much higher, around 535 Euro VAT included (600USD).
To address 2 points in your above reply, the display readability is as in the first image in this thread, not the shaded part but the brighter half and just as kj7e says.
Just to be perfectly clear.....they are plenty bright and very easy to read, even at considerable distances.
Sorry I can't compare it to the SDG2000X just yet, new stock is in transit ATM.

Input filter.
I suspect it is a software filter as there are no changes in input capacitance when it's engaged.

So that leaves one other worry for you, the effect of input capacitance on low voltage readings.
All I can do to attempt to answer this is use an AWG as a uV DC source while monitoring with other meters, one of my old AVO's should be sensitive enough for that.

When I have a mo I'll be back with an edit.
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: markone on March 15, 2016, 02:17:28 am
I suspect it is a software filter as there are no changes in input capacitance when it's engaged.

Hi Tautech,

i too guess that we have a software filter engaged but if you look to Martin's video @ 08:30 https://youtu.be/ZRZgGPQZZkE?t=512 (https://youtu.be/ZRZgGPQZZkE?t=512), you can clearly see a fast input impedance drop below one Mohm followed by slow recovery to 10Meg, so something is alos happening at hardware level.

Do you hear a relay "click" when you cycle filter option ?
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: tautech on March 15, 2016, 03:18:04 am
I suspect it is a software filter as there are no changes in input capacitance when it's engaged.

Hi Tautech,

i too guess that we have a software filter engaged but if you look to Martin's video @ 08:30 https://youtu.be/ZRZgGPQZZkE?t=512 (https://youtu.be/ZRZgGPQZZkE?t=512), you can clearly see a fast input impedance drop below one Mohm followed by slow recovery to 10Meg, so something is alos happening at hardware level.

Do you hear a relay "click" when you cycle filter option ?
No.

Of course for 10M to 10G input impedance a relay selects a different divider network.

I don't have a PSU capable of less than 1mV supply although I could make a divider to get well down in the uV levels but at those levels I don't have further equipment for monitoring.
I'll have more of a play later.......
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: MiataMuc on March 23, 2016, 09:54:30 am
Hi,

firmware version P01.16R2 is avaible at http://siglentamerica.com/gjjrj-xq.aspx?id=4630&tid=15 (http://siglentamerica.com/gjjrj-xq.aspx?id=4630&tid=15)

From the PDF:

1. Modify the UI
2. Fix the bug in trend chart. F
3. Modify the number of file system from 2 to 3 , and copy some configuration file to new location .This will reduce the chance of system crash.
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: kj7e on March 23, 2016, 01:56:27 pm
Hi,

firmware version P01.16R2 is avaible at http://siglentamerica.com/gjjrj-xq.aspx?id=4630&tid=15 (http://siglentamerica.com/gjjrj-xq.aspx?id=4630&tid=15)

From the PDF:

1. Modify the UI
2. Fix the bug in trend chart. F
3. Modify the number of file system from 2 to 3 , and copy some configuration file to new location .This will reduce the chance of system crash.

Nice, Ill try it out later today.
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: kj7e on March 23, 2016, 04:39:24 pm
Only had a few min to play with it so far.  They defiantly made UI changes, nice the OK button does something now.  Not sure I like the new display layout yet, looks like they wanted to address the similarity to the Keysight 3440x UI.  The light grey background is gone, improves contrast for sure, that's a plus. Slight changes to many of the menus and how the soft buttons work.  Trend Chart integration is much better.  The auto trigger may be a bit slower on the slow mode.  Not sure I like the large yellow highlighted selected mode indication or the yellow separation lines.  Cant say it looks like the Keysights anymore, that's for sure.
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: Eric-H on March 24, 2016, 07:41:43 am
Tried the new firmware 16R2. The trend chart is better but not great. It starts good but after a minute the sample rate drops. The attached picture is of a sine wave with a period of 100 s. The left side of the trend chart shows a nice sine curve, after that the sample interval is much longer.

Also I don't like the grey texts on the softkeys, seems like they are disabled.

Update:
The trend chart only works correctly in "all"-mode when the measuring speed is set to "slow". In "medium" and "fast" speed, the trend chart scrolls as in mode "recent" and loses the data older than 1 minute.
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: tautech on March 26, 2016, 08:06:35 am
FW 16R2
There are no installation instructions.
There are 2 FW files to be installed:
Vp15R2-to-p16-transition.ADS to be installed first, system reports 15R3 after installation.
Reboot
Then install sdm305(V100R001B01D01P16R2).ADS, after which system will auto reboot.



First change noticed is the sightly different GUI, darker background resulting in better contrast and enhanced visibility.
Also slightly changed on-screen indication icon layout:

(https://www.eevblog.com/forum/testgear/siglent-new-bench-dmm-sdm3055/?action=dlattach;attach=212062)

Edit
Screenshot added
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: Eric-H on March 26, 2016, 10:23:40 am
Here is another example of the trend graph in the 16R2 firmware. It displays an hour long log with so few datapoints the result is unusable. The input signal in this case was a triangle wave with a period of 15 minutes. The DMM measures every second so there is enough data available to draw a decent waveform.
I hope Siglent will have another look at the firmware and fixes this problem.
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: Siglent on March 29, 2016, 10:07:50 am
Here is another example of the trend graph in the 16R2 firmware. It displays an hour long log with so few datapoints the result is unusable. The input signal in this case was a triangle wave with a period of 15 minutes. The DMM measures every second so there is enough data available to draw a decent waveform.
I hope Siglent will have another look at the firmware and fixes this problem.
Dear Eric-H,
    Trend data shown in the screen fixed on the screen about four hundred pixels.
    SDM3055’s trend function show the user a simulation curve which in accordance with a certain algorithm . It saves the measured characteristic curve
    of the overall shape, but not the original curve reproduction.

     Thank you for support Siglent!
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: Eric-H on March 29, 2016, 01:05:05 pm
Here is another example of the trend graph in the 16R2 firmware. It displays an hour long log with so few datapoints the result is unusable. The input signal in this case was a triangle wave with a period of 15 minutes. The DMM measures every second so there is enough data available to draw a decent waveform.
I hope Siglent will have another look at the firmware and fixes this problem.
Dear Eric-H,
    Trend data shown in the screen fixed on the screen about four hundred pixels.
    SDM3055’s trend function show the user a simulation curve which in accordance with a certain algorithm . It saves the measured characteristic curve
    of the overall shape, but not the original curve reproduction.

     Thank you for support Siglent!

Thanks for the reply. I understand that you can not display all measured data in the 400 pixels available on the display, so you have to skip datapoints. However, in the screenshot I've posted you can see that that graph is drawn in steps of +/- 40 pixels. So the screen could display a much better curve if it didn't skip so many datapoints.
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: Pieh0 on March 31, 2016, 09:38:52 pm
Well the new firmware didn't fix the problem i've had from day one with the boot screen.

Maybe someday it'll happen  :'(

(http://i.imgur.com/T5WGJQl.png?1)
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: tautech on April 01, 2016, 05:18:37 am
Well the new firmware didn't fix the problem i've had from day one with the boot screen.

Maybe someday it'll happen  :'(

Is other functionality OK?

I'll point Siglent to your post.
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: Pieh0 on April 01, 2016, 12:30:29 pm
Yea it works fine apart from that, just the "Kernel starting" image that's screwed.

Thanks :)
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: tautech on April 01, 2016, 05:23:12 pm
Yea it works fine apart from that, just the "Kernel starting" image that's screwed.

Thanks :)
Tech support says your start screen is representative of a power failure during a FW update.

They suggest you contact your supplier for warranty repair.
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: Pieh0 on April 02, 2016, 04:22:10 am
Ok, thanks :/.
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: 4cx10000 on April 17, 2016, 12:40:08 pm
I was working on an amplifier this morning and for the first time - let's say just for fun - I used the "hold measurement function". It will keep 8 measurements in total which probably is, just about what most of us need. What came to my mind is that the beep that comes, when the figures has settled, is not especially loud and the pitch is not the very best for me, with other words, quite hard to hear. In addition, it can also - by us people not having normal, functional ears - be masked by fan noise from the DMM and of course, other types of noise in the surrounding. It would have been a nice feature if the user could change both pitch and volume or at least the latter. If it is not possible to add in the firmware, the only thing I will have to do is to put a microphone near the beeper inside the DMM and connect it to an amplifier  ;D
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: tautech on April 17, 2016, 12:57:20 pm
I was working on an amplifier this morning and for the first time - let's say just for fun - I used the "hold measurement function". It will keep 8 measurements in total which probably is, just about what most of us need. What came to my mind is that the beep that comes, when the figures has settled, is not especially loud and the pitch is not the very best for me, with other words, quite hard to hear. In addition, it can also - by us people not having normal, functional ears - be masked by fan noise from the DMM and of course, other types of noise in the surrounding. It would have been a nice feature if the user could change both pitch and volume or at least the latter. If it is not possible to add in the firmware, the only thing I will have to do is to put a microphone near the beeper inside the DMM and connect it to an amplifier  ;D
It should be, let's see if others also need a higher volume beeper as it adds weight to any suggestions that might be forwarded to Siglent.
In the meanwhile I'll have a play with my unit to check beeper sound levels.

Thanks for the feedback.  :-+
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: tautech on April 18, 2016, 01:16:48 am
IMHO the beeper IS too quiet.
Sure in a quiet lab it might be very acceptable but with any significant background noise it needs be ~ 50% louder.
Adjustable would be nice, let's see what Siglent can do.  :-\
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: tautech on April 18, 2016, 05:58:50 am
Tech support have informed me beeper volume is already set at max in FW.  :(

I have suggested a HW and FW change to increase overall volume and to also make it user adjustable.


In the meantime the VMC out BNC can be set to provide a positive or negative trigger out that may suffice for those wanting to trigger an external beeper circuit as a work-around.

If I get a chance I'll investigate a simple HW mod to increase beeper volume. With luck we only need to change some gain settings.  :-\
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: 4cx10000 on April 18, 2016, 06:40:20 am
Thanks so much tautech for your support!  :-+

It would be very helpful being able to adjust the beeper volume, after all it is of great significance - at least for me - when you use the "hold measurement function". You can safely keep your eyes on the object without slipping your probe tips and wait for the beep without watching the display.  8) Yes agree, in a quiet lab its quite okay. Good idea, if not this issue can be solved in another way, to use the VMC, did not think of that.  :-+
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: tautech on April 18, 2016, 08:12:50 am
Thanks so much tautech for your support!  :-+

It would be very helpful being able to adjust the beeper volume, after all it is of great significance - at least for me - when you use the "hold measurement function". You can safely keep your eyes on the object without slipping your probe tips and wait for the beep without watching the display.  8) Yes agree, in a quiet lab its quite okay. Good idea, if not this issue can be solved in another way, to use the VMC, did not think of that.  :-+
It was a bright idea I had in a rare moment  ;) but I may have come to grief as try as I might I can't enable the functionality I expected.

More emails to tech support........
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: tautech on April 20, 2016, 08:19:13 am
Thanks so much tautech for your support!  :-+

It would be very helpful being able to adjust the beeper volume, after all it is of great significance - at least for me - when you use the "hold measurement function". You can safely keep your eyes on the object without slipping your probe tips and wait for the beep without watching the display.  8) Yes agree, in a quiet lab its quite okay. Good idea, if not this issue can be solved in another way, to use the VMC, did not think of that.  :-+
It was a bright idea I had in a rare moment  ;) but I may have come to grief as try as I might I can't enable the functionality I expected.

More emails to tech support........
Low beeper volume......

At this time the VMC BNC output is NOT configured to provide any output that is part of the UI beeper, whether it be the Hold or Continuity beep.

BUT IT COULD BE with new FW, I'm told, IF there is sufficient demand.

SDM3055 owners/users please put your hands up if you'd find this functionality useful.

It could be used for triggering a louder external beeper or pass/fail or as your needs demand.
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: 4cx10000 on April 20, 2016, 10:32:11 am
Hi tautech and thanks again for being very responsive on this and other issues!  :-+ Yes, for me it would be nice to have the option to do so, but guess most people around got much better ears than I have  :) So, there was not any possibilities to make changes in the firmware to increase the volume? Sometimes wrong pitch along with low amplitude could be the culprit to not perceive sound from all those built in, small beepers. I will wait and see how it goes, thanks again!  :)
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: Performa01 on April 20, 2016, 10:47:09 am
Being able to configure the VMC output as latch/continuity indicator could certainly be useful for several tasks.
Since by now we know of at least one user who would greatly appreciate it in order to overcome some UI design weakness, i.e. the silent beeper, why not just implement it?

I really doubt that a bunch of SDM3055 users will jump in just to vote for that feature, particularly as they might not have an urgent need for it right at the moment. But it will come in handy some day for sure...
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: cnkz on April 29, 2016, 12:59:28 pm
I am now also a SDM3055 owner. I really like the Display. This Display was one reason i prefer the Siglent over the Rigol in the same price range. Accuracy seems to be very good  :blah:...

I would like to point out two interesting features that i hadn't seen mentioned in the forum and elsewhere but might be interesting for potential buyers:

a) The AC range is really AC coupled, so DC offset does not impact the result as in cheap meters where they have saved the expensive high voltage decoupling cap.

b) The shunt resistor impedance is 1.2Ohm only in the µA and mA current measurement ranges! That gives a nice low voltage drop during current measurements. One of my multimeter has here 1kOhm for example in the µA range.
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: flash2b on June 14, 2016, 09:38:09 am
I also bought a SDM3055, and I like it a lot.

Yesterday I've managed to get EasySDM v1.1.1.2 working using the NI VISA driver: http://download.ni.com/support/softlib/visa/NI-VISA/15.5/Windows/NIVISA1550runtime.exe (http://download.ni.com/support/softlib/visa/NI-VISA/15.5/Windows/NIVISA1550runtime.exe) . This runtime contains the Visa Shared Components v.5.6.0.

But there is a problem....

The top of the screen of the EasySDM does not update and stays black, see attachment.

I am using Windows 10 Pro 64bit. Do other also have this problem, or how to solve this ?


Title: Re: Siglent NEW Bench DMM SDM3055
Post by: tautech on June 14, 2016, 09:47:34 am
I also bought a SDM3055, and I like it a lot.

Yesterday I've managed to get EasySDM v1.1.1.2 working using the NI VISA driver: http://download.ni.com/support/softlib/visa/NI-VISA/15.5/Windows/NIVISA1550runtime.exe (http://download.ni.com/support/softlib/visa/NI-VISA/15.5/Windows/NIVISA1550runtime.exe) . This runtime contains the Visa Shared Components v.5.6.0.

But there is a problem....

The top of the screen of the EasySDM does not update and stays black, see attachment.

I am using Windows 10 Pro 64bit. Do other also have this problem, or how to solve this ?
Did you select the Control dropdown and then Connect?
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: flash2b on June 14, 2016, 09:49:41 am
Yes,it connects and works as I see the measurements. But the top line of the screen is screwed up and only shows a very small part of the characters. It changes text when I switch selection, but is stays a small part of the characters.
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: tautech on June 14, 2016, 10:10:18 am
Yes, it works but the top line of the screen is screwed up and only shows a very small part of the characters. It changes when I switch selection.
How are you doing the selection, with the PC control I hope.

Attached is a screenshot of the Easy SDM UI before an active connection is enabled. Notice the highlighted Connect. After selecting Connect you need then select the type of connection be it USB or LAN.

(https://www.eevblog.com/forum/testgear/siglent-new-bench-dmm-sdm3055/?action=dlattach;attach=233153)

What are you using?
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: flash2b on June 14, 2016, 10:16:38 am
I am using USB.

Yes, I am changing selection using the EasySDM since the SDM3055 is on "remote" once it is connected.

My meter runs the latest firmware: P01.16R2 (It came with P01.16 from the factory).

I will show a picture how is is shown when my meter is connected and running.

I think it has something to do with the new GUI design of the meter in the latest firmware.  P01.16R2 changed the position of the text on the screen of the SDM3055, see attachment.

Once again I will post a picture for you when I have the meter connected again to the PC. It is currently not.

Does it work with your SDM3055 with the same firmware ?
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: tautech on June 14, 2016, 10:35:49 am
Yep, same FW.

I think I see your point now......part of the DMM GUI is missing in the EasyDMM remote connection GUI.
You can see it missing in this screenshot too at the top and blacked out. I will inform the factory.

(https://www.eevblog.com/forum/testgear/siglent-new-bench-dmm-sdm3055/?action=dlattach;attach=233160)
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: flash2b on June 14, 2016, 11:44:12 am
YES!

That is exactly what I mean, thanx !!

May be they can also change cosmetic bugs:

Change Histongrom --> Histogram
Change UI colors on the screen to match those on the real SDM3055
Change the Led color on the left from red to green (like on the real SDM3055)
Change '2nd' button on the picture to 'Dual' (like on the real SDM3055)
Change 'Scaner' text above 'Temp' button on the picture to 'Scanner' (typo)
Add text "Display" above the "Math" button on the picture (like on the real SDM3055)
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: tautech on June 15, 2016, 08:45:59 am
I got this reply message from Siglent Tech support just after they got to work today:

We release new EasyDDM Just Now.
    I test it, You can see:

     
(https://www.eevblog.com/forum/testgear/siglent-new-bench-dmm-sdm3055/?action=dlattach;attach=233412)

    We are so sorry that Too long time no update.


    There is the Download URL:

    http://www.siglentamerica.com/USA_website_2014/Firmware&Software/firmware/EasyDDM-P1.05.rar (http://www.siglentamerica.com/USA_website_2014/Firmware&Software/firmware/EasyDDM-P1.05.rar)

I have not tested it to see how many of the issues raised have been fixed.

YES!

That is exactly what I mean, thanx !!

May be they can also change cosmetic bugs:

Change Histongrom --> Histogram
Change UI colors on the screen to match those on the real SDM3055
Change the Led color on the left from red to green (like on the real SDM3055)
Change '2nd' button on the picture to 'Dual' (like on the real SDM3055)
Change 'Scaner' text above 'Temp' button on the picture to 'Scanner' (typo)
Add text "Display" above the "Math" button on the picture (like on the real SDM3055)

BTW these ^^^ have been forwarded to the Siglent software engineers.

Thanks for your feedback flash2b.  :-+
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: flash2b on June 15, 2016, 12:41:09 pm
WOW, that is quick. Will test it tonight on my SDM3055.

Change Histongrom --> Histogram is also fixed !!
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: flash2b on June 15, 2016, 06:57:18 pm
Tested the new EasyDMM:
Version Tested: V100R001B01D01P05
OS Used: Windows 10 Pro 64bit
VISA drivers: NI Visa Shared Components v.5.6.0
Meter/Firmware used: Siglent SDM3055 with P01.16R2.

Fixed (compared to EasySDM v1.1.1.2) :
+ Screen update problem in the upper part of the display
+ Change Histongrom --> Histogram

Not fixed (compared to EasySDM v1.1.1.2) :
Major (new)
- Pressing Shift/Local on the SDM3055 will show the reading on the actual display of the meter, however after doing this changing range (e.g. from DCV-->ACV) on EasyDMM leads to "Program Not Responding" so application hangs and needs to be killed. SDM3055 stays at connection status (Top Right) "Remote" and also does not respond anymore until EasyDMM is killed and then goes to connection status "Local".

Medium (new)
- Pressing Run/Stop on EasyDMM will set SDM3055 from trigger status (top left) "Immed Trig"  {green color}  to "Stopped" {red color} and the measurement reading is shown on the actual display of the meter. Pressing Run/Stop on EasyDMM again will show trigger status "Immed Trig" {white color} on SDM3055, so in white color instead of (previous) green color and also does NOT blank out the (previous) measurement reading on the actual display of the meter back to ".. ....." (like it was before pressing Run/Stop). (a work around is to switch the range and switch range back)
- The Rel On/Off on EasyDDM is shown on the 5th function key whereas this function is implemented and displayed on the 6th key of the SDM3055 meter (may be minor, but I find this annoying)
- The Range button on EasyDMM is only there for show there is no functionality. You cannot set "Manual" range like on the SDM3055 meter. You can however use the 1st function key in EasyDMM to select Auto or a specific range (e.g.2V, 20V etc) but not toggle between Manual and Auto. The + and - range buttons are also there for show and do not function as the SDM3055 meter.  (may be minor, but I find this annoying)

Minor / Cosmetic (new)
- Branding "Siglent" on the Top Left of EasyDMM is now blank instead of the nice Siglent Logo of the previous version (branding guys, I know that is important !!)
- Branding "SDM3055 Digital Multimeter" on the Top Left of EasyDMM next to the Siglent Logo is now blank instead the previous version

Minor / Cosmetic (already reported)
- Change 'Scaner' text above 'Temp' button on the picture to 'Scanner' (typo)
- Change UI colors on the screen to match those on the real SDM3055
- Change the Led color on the left from red to green (like on the real SDM3055)
- Change '2nd' button on the picture to 'Dual' (like on the real SDM3055)
- Add text "Display" above the "Math" button on the picture (like on the real SDM3055


Overall I am happy with the new version, but I hope the Shift/Local bug will be fixed soon.
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: tautech on June 15, 2016, 08:15:54 pm
Thanks very much flash2b for your feedback and well written analysis of the latest EasySDM software.  :clap:

If I may I'd like to comment on these:
Quote
Minor / Cosmetic (new)
- Branding "Siglent" on the Top Left of EasyDMM is now blank instead of the nice Siglent Logo of the previous version (branding guys, I know that is important !!)
- Branding "SDM3055 Digital Multimeter" on the Top Left of EasyDMM next to the Siglent Logo is now blank instead the previous version
Siglent rebrand some of their equipment and I'd imagine the branding has been purposely omitted but I do agree as OEM of the SDM3055 the Siglent branding and model# should be included in Siglent supplied software.

It goes without saying that your comments will be considered by the software engineers.

Thanks.
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: flash2b on June 15, 2016, 08:43:51 pm
The whole branding with this new version is gone and it now looks OEM. Previously the program icon was a Siglent logo (now, in my opinion, an ugly icon) and the "About EasyDMM" also does not mention Siglent anymore. Seems also they had this software on the shelf, since it is Copyrighted 2015.

I find the EasyDMM a good addition to the SDM3055 meter itself, being the latter the most important to be free of bugs.

There is however also a (small) bug in the continuity function (Meter/Firmware used: Siglent SDM3055 with P01.16R2).

To replicate the bug you need to:
1. Switch continuity mode
2. Make sure the beeper is set to on
3. Press the Threshold function key
4. Decrease or Increase the threshold ohm value
5. Now make a short with your probes
6. The beeper will not make any sound !!!!
7. Toggle beeper to off and on again
8. The beeper will make sound

The funny thing is that it works the same when you don't press the Threshold function key and then the beeper sound will stay on. So it looks like that pressing "Threshold" will mute the beeper which it should not do !
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: tautech on June 15, 2016, 08:51:36 pm
There is however also a (small) bug in the continuity function (Meter/Firmware used: Siglent SDM3055 with P01.16R2).

To replicate the bug you need to:
1. Switch continuity mode
2. Make sure the beeper is set to on
3. Press the Threshold function key
4. Decrease or Increase the threshold ohm value
5. Now make a short with your probes
6. The beeper will not make any sound !!!!
7. Toggle beeper to off and on again
8. The beeper will make sound

The funny thing is that it works the same when you don't press the Threshold function key and then the beeper sound will stay on. So it looks like that pressing "Threshold" will mute the beeper which it should not do !
Does setting the Relative selector either Off or ON (with probes shorted or link between inputs) affect what you are seeing in any way?
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: flash2b on June 15, 2016, 08:55:26 pm
tautech, I have updated my analysis that you've quoted. It seems the Threshold function mutes the beeper. It is step 3 in my replication steps description. I've numbered the steps now to make it more clear. Step 3 shuts the sound of the beeper off.

If I go to Math --> Limits and repeat my continuity test, the beeper is making sound again (as it should) and is working fine. So it seems that it is only linked to the specific screen that contains the Threshold functionality.

What do you mean with "Relative Selector" ?

After performing the steps above, if you switch function (e.g. DCV) and go back to Continuity the screen shows the Beeper is "Off". This confirms that pressing "Threshold" always changes the beeper state, while it should keep the beeper state in tact.
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: tautech on June 15, 2016, 09:06:10 pm
What do you mean with "Relative Selector"
Zero readings can be set Relative to whatever you are needing to measure.
For example readings in some modes wander with open probes and this apparent over-sensitivity can be nulled using the Relative setting which will adjust the zero to the point in time when it is engaged and whatever you are connected or not to at that time.

I'm just typing ATM and not at my 3055 so I'm ensuring we get as much info from you in order to replicate your findings.  ;)
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: flash2b on June 15, 2016, 09:12:43 pm
Relative (Rel On/Off) is only available in Resistance 2W & 4W mode. Not in the continuity mode.
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: tautech on June 15, 2016, 09:42:40 pm
Relative (Rel On/Off) is only available in Resistance 2W & 4W mode. Not in the continuity mode.
Relative (Rel On/Off) is available in many/most measurement modes, OK not in Continuity.
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: flash2b on June 16, 2016, 07:39:07 am
You are right and have rephrased it nicely.

If you or someone else on the EEVBlog can confirm my reported bug (beeper bug), that will be very helpful. The SDM3055 is really a nice meter and Siglent made a lot of progress to solve issues in the past.

Title: Re: Siglent NEW Bench DMM SDM3055
Post by: tautech on June 16, 2016, 07:58:04 am
You are right and have rephrased it nicely.

If you or someone else on the EEVBlog can confirm my reported bug (beeper bug), that will be very helpful. The SDM3055 is really a nice meter and Siglent made a lot of progress to solve issues in the past.
Confirmed with my unit as you've described in reply #227 and BTW Tech support are aware of your findings.

Thanks for your efforts.  :-+
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: flash2b on July 05, 2016, 09:25:49 am
Did you get any feedback of the issue with EasyDMM and/or the Beeper Bug of the SDM3055 ???
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: tautech on July 05, 2016, 09:55:55 am
Did you get any feedback of the issue with EasyDMM and/or the Beeper Bug of the SDM3055 ???
Yes, acknowledgments and comment that both would be addressed, other than that no more than I mentioned in my previous reply however from the FW page on the website:
Current Version: 1.01.01.15R1 | Published?2015-09-29

Which means a FW update is now well overdue......which of course this means Siglent are busy incorporating the suggestions that you have offered.  ;)
If you don't spot the new FW before I do I'll be posting a link to it here when it's released.

Even though Siglent are not apparently active on EEVblog I can assure watchers they have setup alerts for most of the threads on Siglent products and often are aware of problems by the time I've reported them.

Thanks all for your ongoing support.
Title: Re: Siglent NEW Bench DMM SDM3055
Post by: rf-loop on August 11, 2016, 09:11:20 am
There is new member in Siglent DMM products.
New pruct is in X-instruments category.

SDM3045X.

Overall functionally like  SDM3055 but new SDM3045X is 60000 count, advertised as  4½ digit DMM   
- or is it better say 4 3/4 or 4 4/5  or even 4 5/6 as some manufacturer name 60000 count meter.. ( SDM3055 have 240000 and it is named as 5 1/2 digit)

If look what is Tektronix opinion, yes world is free for opinions:
 http://www.tek.com/document/whitepaper/understanding-handheld-dmm-specifications (http://www.tek.com/document/whitepaper/understanding-handheld-dmm-specifications)
then it can name least as 4 4/5 digit or more.
 

But if use other approach to digits:
Resolution digits Digits = log10 (counts)  and this give with 60000 count  roughly 4 3/4.
There is many meter what say 5 1/2 digit but markets have adopted and accepted these 200000 (199999) counts can name 5 1/2 digits, and also this is well explained. Confusion and different opinions for marketing "digits" start just after this... 1/3, 2/3, 3/4, 4/5, 4/6 and so on.....

There is one road away from this. Talk about counts as primary when talk about  resolution and secondary can tell how many digits if even need.


Data sheet pdf (http://www.siglentamerica.com/USA_website_2014/Documents/DataSheet/SDM3045X_Datasheet_DM0545_E01A.pdf)


Resolution is lower but relative to resolution difference true accuracy do not look bad, is it even better in some cases.
(SDM3055 one year DCV is listed as 0.015% and SDM3045X as 0.01%)

If look more carefully accuracy specifications, it need look percent + count total.
If measure 5V and it show exactly 5.0000V (full range 6V) error can be  0.01%(from display) + 6 count.
(one count in this range is 0.0001V)

max(%) 5.0005V + 6 count  so max  is  5.0011V (0.022% more)
min(%) 4.9995V - 6 count so min is 4.9989V  (0.022% less)


But wait a minute, what happend if I measure and display show exactly 10.000V
Now meter is in 60V range.  But, in this range specifications tell: 0.02%(from display) + 4 count.
(one count in this range is 0.001)

max(%) 10.002V + 4 count so max is 10.006V (0.06% more)
min(%)  9.998V - 4 count so min is 9.994V (0.06% less)

If these errors specified by number of counts are true random noise without including other type of errors then average can do some trick.

If you wonder these real % take your DMM specifications, read carefully  and do calculations.

Also this was just example and not at all like worst case finding. Worst cases are when you look just some border values.
Example just >6V or just >600mV.  These is not Siglent special, this kind of things are normal, independent of if meter is Fluke, Keithley, AVO,  HuiHai or Utrend.


Title: Re: Siglent NEW Bench DMM SDM3055
Post by: Tjuurko on August 12, 2016, 06:29:01 am
Overall functionally like  SDM3055 but new SDM3045X is 4½ digit. (60000 count when SDM3055 have 240000)
SDM3045X - 65999 count (60000 +10%)
SDM3055 - 239999 count (200000 +20%)
Title: Re: Siglent NEW Bench DMMs SDM3055 and SDM3045
Post by: flash2b on August 17, 2016, 10:21:07 am
Counting starts from 0, so no need to subtract 1 from the maximum count.

The front of the SDM3045X looks slightly different as the SDM3055(A). The up, down and range button have different color and the top/bottom are triangular. Looks very similar as the SDG2000X series and new Rigol test gear.

I wonder which reference they put into the SDM3045X, anyone knows ?
Title: Re: Siglent NEW Bench DMMs SDM3055 and SDM3045X
Post by: tautech on September 01, 2016, 08:40:16 am
The front of the SDM3045X looks slightly different as the SDM3055(A). The up, down and range button have different color and the top/bottom are triangular.
It is, but only front panel colours and minor font differences and a different coloured button or two.

SDM3045X with SDM3055 below, both showing VDC
(https://www.eevblog.com/forum/testgear/siglent-new-bench-dmm-sdm3055/?action=dlattach;attach=252352)

After a quick crash through the menus the only difference that was apparent in the UI was the lack of any filter in VDC. The VDC filter is present in the SDM3055 UI.

Interestingly there appears to be a different series of FW in the newer SDM3045X and that may account for the much faster booting in this new model.  :clap:

These new X series models have horns  >:D , no not really, but feet that extend over each end of the instrument and protect both front and rear BNC's, buttons and knobs, so much so that they could well be stored on a cupboard either end up or such when not in use.
The feet are medium hard rubber and screw fixed, 2 for each end. They have small recesses that accommodate the matching lugs of another X series instrument when stacked.

Stacking feet
(https://www.eevblog.com/forum/testgear/siglent-new-bench-dmm-sdm3055/?action=dlattach;attach=252354)


I wonder which reference they put into the SDM3045X, anyone knows ?
At a glance it's the same inside as a SDM3055
https://www.eevblog.com/forum/testgear/siglent-new-bench-dmm-sdm3055/msg637615/#msg637615 (https://www.eevblog.com/forum/testgear/siglent-new-bench-dmm-sdm3055/msg637615/#msg637615)

SDM3045X PCB
(https://www.eevblog.com/forum/testgear/siglent-new-bench-dmm-sdm3055/?action=dlattach;attach=252356)

Edit
And BTW the SDM3045X has NO fan.
Added links for SDM3045X to the first post in this thread.
Title: Re: Siglent NEW Bench DMMs SDM3055 and SDM3045X
Post by: flash2b on September 01, 2016, 09:29:40 am
Thanks for the pictures. (The reference is however located under the metal shielding, so still a 'secret')

The rubber feed are exactly the same as the Rigol DP832 and other Siglent X series equipment.

The ranges on the 3055 are much better equiped/balanced for daily use, eg. the weird 600V AND 1000V on the 3045X

3055: 200mV, 2V, 20V, 200V, 1000V
3045X: 600mV, 6V, 60V, 600V, 1000V

I like the look of the 3045X better.

Is the beeper bug also present in the 3045X ? What is the firmware version in the new machine? Is it really different or did they just use a faster processor/flash card?

I also wonder if Siglent is gonna release a 3055X model.... (and stop producing the 3055 and 3055A model, where the A model is just a regular 3055 with a GPIB USB dongle)
Title: Re: Siglent NEW Bench DMMs SDM3055 and SDM3045X
Post by: tautech on September 01, 2016, 10:10:51 am
Thanks for the pictures. (The reference is however located under the metal shielding, so still a 'secret')
No it's not, see the 3055 pic I linked:
https://www.eevblog.com/forum/testgear/siglent-new-bench-dmm-sdm3055/msg637615/#msg637615 (https://www.eevblog.com/forum/testgear/siglent-new-bench-dmm-sdm3055/msg637615/#msg637615)

Quote
I like the look of the 3045X better.
You might like the sound of it more.....NO fan.  :-+

Quote
Is the beeper bug also present in the 3045X ?
No, and if the Beeper is toggled off and on in a 3055 the bug goes away.

Quote
What is the firmware version in the new machine?
New FW
5.01.01.01

Current FW for the 3055 is 01.16R2

Quote
I also wonder if Siglent is gonna release a 3055X model...
There's every likelihood Siglent will update the 3055 to an X but there has to be some small changes in the case to mount the feet. Some other existing models are getting "facelifts" and another one will be announced in a few days.

Title: Re: Siglent NEW Bench DMMs SDM3055 and SDM3045X
Post by: flash2b on September 01, 2016, 10:45:30 am
I meant the reference of the 3045X is still a secret. Your 3045X pic has a big can over the reference.

So no chance on a 3065X ???
Title: Re: Siglent NEW Bench DMMs SDM3055 and SDM3045X
Post by: tautech on September 01, 2016, 10:56:18 am
I meant the reference of the 3045X is still a secret. Your 3045X pic has a big can over the reference.
Doesn't Dave take a look at under the can in the 3055 teardown?
https://www.eevblog.com/forum/blog/eevblog-829-siglent-sdm3055-bench-multimeter-teardown/ (https://www.eevblog.com/forum/blog/eevblog-829-siglent-sdm3055-bench-multimeter-teardown/)
Title: Re: Siglent NEW Bench DMMs SDM3055 and SDM3045X
Post by: flash2b on September 01, 2016, 11:02:44 am
True, but I recon the 3045X has a different version/type/grade since the tolerance is also different compared to the 3055.

The 3055 has an MAX6325 1ppm/°C, Low-Noise, +2.5V Voltage References grade 'C' (best grade).
Title: Re: Siglent NEW Bench DMMs SDM3055 and SDM3045X
Post by: SimonD on September 01, 2016, 06:07:54 pm
My question is simple. Why someone should buy the 4 1/2 (3045) version when the difference between the 5 1/2 (3055) version is only a few Dollars or Euro. I think a new version to the upper level 6 1/2 digits (let say 3065) with some updated futures. It could be a better choice with the same price difference in the upper level.   ;) Enough competitive to Keysight 34461A.
Maybe in the near future ...
Also, Rigol have long time ago to present something new (TFT version for example) in Workbench DMM area ...
Title: Re: Siglent NEW Bench DMMs SDM3055 and SDM3045X
Post by: tautech on September 01, 2016, 09:15:05 pm
My question is simple. Why someone should buy the 4 1/2 (3045) version when the difference between the 5 1/2 (3055) version is only a few Dollars or Euro.
$389 vs $469 is more than a few bucks for many.
There's many that don't require even 5 1/2 digits. Everyone needs different specs depending on whether you're a voltnut or not. While the units are not portable like a DMM,  their cost is no more than top end DMM's and the feature set is similar.

Quote
I think a new version to the upper level 6 1/2 digits (let say 3065) with some updated futures.
Then you get into a more competitive market segment where any market share for Siglent will be smaller.
Title: Re: Siglent NEW Bench DMMs SDM3055 and SDM3045X
Post by: simone.pignatti on September 07, 2016, 01:18:02 pm
We have done a short SDM3045X unboxing video where you can see also the booting speed.
We have units to test, let us know if you like to see anything special.

https://www.youtube.com/watch?v=0Ds3K1V3kWg (https://www.youtube.com/watch?v=0Ds3K1V3kWg)

Ciao
Title: Re: Siglent NEW Bench DMMs SDM3055 and SDM3045X
Post by: Pinkus on September 08, 2016, 07:14:30 am
The horns are nice if the SDM30xx are beeing used as portable devices but on a desk or shelf I do not like them.
I am wondering if you can mount the front bumper-horns rotated by 180° (=showing to the back), so they are out the way. It would be quite clever from Siglent and indeed it looks like they can become unscrewed and remounted again rotated.
Title: Re: Siglent NEW Bench DMMs SDM3055 and SDM3045X
Post by: tautech on September 09, 2016, 10:14:19 pm
The horns are nice if the SDM30xx are beeing used as portable devices but on a desk or shelf I do not like them.
I am wondering if you can mount the front bumper-horns rotated by 180° (=showing to the back), so they are out the way. It would be quite clever from Siglent and indeed it looks like they can become unscrewed and remounted again rotated.
The front "horns" can indeed be rotated 1800, the stacking notches and all 4 screw holes still align.
But, there is a small ridge on the underside that rolls over the front face of the instrument when installed correctly and this would need to be removed with a sharp knife before reversal to get them to fit nicely.
This ridge is ~3mm wide and 1mm high and the feet/horns firm rubber type should not make it too difficult to accomplish this mod at home for those that need to.  :-/O


Thanks for the suggestion, we'll pass it on.

Title: Re: Siglent NEW Bench DMMs SDM3055 and SDM3045X
Post by: jackenhack on October 23, 2016, 06:21:58 pm
Anyone got a calibration manual for the SDM3055?
Title: Re: Siglent NEW Bench DMMs SDM3055 and SDM3045X
Post by: tautech on October 23, 2016, 07:03:22 pm
Anyone got a calibration manual for the SDM3055?
Not seen one from Siglent yet.
AFAIK they should have it finished by now, it was some time ago when I asked for the Service manual.
All their Service manuals have the Cal procedures outlined and the equipment needed.
To give some idea I listed an overview for the full Siglent range here:
https://www.eevblog.com/forum/testgear/siglent-technical-support-join-in-eevblog/msg986796/#msg986796 (https://www.eevblog.com/forum/testgear/siglent-technical-support-join-in-eevblog/msg986796/#msg986796)

It'll be ~30hrs till tech support are at work at the factory, we'll try to get some answers for you then.

BTW have you got one that's faulty?
Title: Re: Siglent NEW Bench DMMs SDM3055 and SDM3045X
Post by: tautech on October 25, 2016, 03:53:01 am
Anyone got a calibration manual for the SDM3055?
Let me know if this helps
http://www.siglentamerica.com/prodcut-wd.aspx?id=176&tid=37&T=2 (http://www.siglentamerica.com/prodcut-wd.aspx?id=176&tid=37&T=2)

Edit
The Service manual lists the key equipment required as:
Keysight 34172B
Fluke 5522A
Siglent SDG2000X
PC with Easytest software

Title: Re: Siglent NEW Bench DMMs SDM3055 and SDM3045X
Post by: pxl on November 20, 2016, 08:17:47 pm
Hey guys,

I've just recently got one SDM3045X and although I had no time to test it thoroughly, there are minor issues with it which are annoying a lot:

- blinking (breathing) power led. It is an instant wtf - you just cant do anything at your workplace without disturbing your focus by this tiny led. I will kill the multivibrator in his head but for now the only protection is a small piece of duct tape. What is the reason behind this? Driving the users mad? Luckily it is not beeping continuously at power off.
- the font used on main screen is just partly monospaced: the minus/plus signs has different width. Because of that, when the DUT is not connected, the numbers on the screen is constantly jumping to left and right. Super annoying and it could be resolved easily by using a proper font...
- the plastic horns are upside down comparing to my SDG2042X, therefore it was impossible to stack these on top of each other (I resolved by flipping the horns upside down on SDG2042X, but one of the screw nuts just falled inside the casing.
- the display becomes super slow when the bargraph is on. Sure, it takes some cpu cycles to calculate and show the bargraph, but c'mon...
- you cannot set the display brightness (background lighting)

and I just used it for 5 minutes :palm:
Title: Re: Siglent NEW Bench DMMs SDM3055 and SDM3045X
Post by: hammy on December 30, 2016, 09:46:10 am
Is there a firmware update available for the SDM3045x?
I found nothing on the official product page. Maybe it is not the right place to look?

Cheers
hammy
Title: Re: Siglent NEW Bench DMMs SDM3055 and SDM3045X
Post by: tautech on December 30, 2016, 09:54:43 am
Is there a firmware update available for the SDM3045x?
I found nothing on the official product page. Maybe it is not the right place to look?

Cheers
hammy
Nothing that I've seen yet.
Is there a problem you'd like to report ?
Title: Re: Siglent NEW Bench DMMs SDM3055 and SDM3045X
Post by: hammy on December 30, 2016, 11:48:58 am
Nothing that I've seen yet.
Is there a problem you'd like to report ?

No, everything is fine.   :-+ I was just curious.
Thank you tautech, happy new year!  :D
Title: Re: Siglent NEW Bench DMMs SDM3055 and SDM3045X
Post by: tautech on December 31, 2016, 06:46:24 pm
Something new for 2017 ? ? ?

(http://www.siglentamerica.com/USA_website_2014/chinesewebsite/Pictures/News/DSC_1595a-550px.jpg)

Enlarge the image to see a new model #.  ;)

2,200,000 count.   :scared:

(http://www.siglentamerica.com/USA_website_2014/Picture/Product/SDM3065X/5.bmp)
Title: Re: Siglent NEW Bench DMMs SDM3055 and SDM3045X
Post by: 4cx10000 on January 01, 2017, 09:54:13 pm
Looks good tautech! Have not seen any prices yet, but they will show up soon I guess. Well, since I already have both a SDM3055 and 34461A I rather stop buying just because they look nice and no, I am not that rich  :=\
Title: Re: Siglent NEW Bench DMMs SDM3055 and SDM3045X
Post by: SimonD on January 02, 2017, 10:00:43 am
Happy new year to everyone,

Yeah great news. With the new X series look, but the price (7980 ¥ about 1150 US $) looks more expensive than Keysight 34461. So .... between the two models i choose Keysight 34461A with Benchvue software.
But this is my personal choice ...

http://www.siglent.com/prodcut-db.aspx?id=1538&tid=37&T=2 (http://www.siglent.com/prodcut-db.aspx?id=1538&tid=37&T=2)
Title: Re: Siglent NEW Bench DMMs SDM3055 and SDM3045X
Post by: tautech on January 02, 2017, 10:14:03 am
Happy new year to everyone,

Yeah great news. With the new X series look, but the price (7980 ¥ about 1150 US $) looks more expensive than Keysight 34461. So .... between the two models i choose Keysight 34461A with Benchvue software.
But this is my personal choice ...

http://www.siglent.com/prodcut-db.aspx?id=1538&tid=37&T=2 (http://www.siglent.com/prodcut-db.aspx?id=1538&tid=37&T=2)
Who knows were the price point will be set ?  :-//

SDM3045X $389
SDM3055   $469
SDM3065X  ? ? ? and $1150 seems unrealistic.

We've seen this before with other models..... the Chinese price bearing no relation to western market pricing.
Title: Re: Siglent NEW Bench DMMs SDM3055 and SDM3045X
Post by: SimonD on January 02, 2017, 10:24:19 am

[/quote]
Who knows were the price point will be set ?  :-//

SDM3045X $389
SDM3055   $469
SDM3065X  ? ? ? and $1150 seems unrealistic.

We've seen this before with other models..... the Chinese price bearing no relation to western market pricing.
[/quote]

I hope so. If that happens it cool be a good point. Time will be the final judgment.
Title: Re: Siglent NEW Bench DMMs SDM3055 and SDM3045X
Post by: SimonD on January 02, 2017, 11:11:24 am
A very good choice in the lower budget looks the new 3055X :

http://www.siglent.com/multimeter/SDM3055X-E (http://www.siglent.com/multimeter/SDM3055X-E)

(With variable diode voltage from 0 to 4 V as i can see in translation in comparison with the older 3055)
Title: Re: Siglent NEW Bench DMMs SDM3055 and SDM3045X
Post by: SimonD on January 04, 2017, 02:11:36 pm
Hi,
Here some updates from our friend from Batterfly in Italy :

http://www.batterfly.com/shop/multimetri-da-banco/siglent-sds3065x (http://www.batterfly.com/shop/multimetri-da-banco/siglent-sds3065x)

If the price is right it seems to be a "Legend" for 6 1/2 Digits !

And the Datasheet in English :

http://www.batterfly.com/PDF/Siglent/Siglent-SDM3065X-BF.pdf (http://www.batterfly.com/PDF/Siglent/Siglent-SDM3065X-BF.pdf)
Title: Re: Siglent NEW Bench DMMs SDM3055 and SDM3045X
Post by: MrWolf on January 04, 2017, 02:44:18 pm
If the price is right it seems to be a "Legend" for 6 1/2 Digits !
Damn me hands are getting all sweaty. That would be beautiful to form a 3 unit row with 2xSDG2000X I have. Would be good unit to test & tear for Dave  :-+
Title: Re: Siglent NEW Bench DMMs SDM3055 and SDM3045X
Post by: jackenhack on January 04, 2017, 08:27:21 pm
Anyone got a calibration manual for the SDM3055?
Let me know if this helps
http://www.siglentamerica.com/prodcut-wd.aspx?id=176&tid=37&T=2 (http://www.siglentamerica.com/prodcut-wd.aspx?id=176&tid=37&T=2)

Edit
The Service manual lists the key equipment required as:
Keysight 34172B
Fluke 5522A
Siglent SDG2000X
PC with Easytest software

I've been in contact with my distributor, but they don't have access to the Easytest software. Can't find it when searching either. Waiting for reply from Siglent.

Jacken
Title: Re: Siglent NEW Bench DMMs SDM3055 and SDM3045X
Post by: tautech on January 04, 2017, 09:13:36 pm
Anyone got a calibration manual for the SDM3055?
Let me know if this helps
http://www.siglentamerica.com/prodcut-wd.aspx?id=176&tid=37&T=2 (http://www.siglentamerica.com/prodcut-wd.aspx?id=176&tid=37&T=2)

Edit
The Service manual lists the key equipment required as:
Keysight 34172B
Fluke 5522A
Siglent SDG2000X
PC with Easytest software

I've been in contact with my distributor, but they don't have access to the Easytest software. Can't find it when searching either. Waiting for reply from Siglent.

Jacken
More small info on Siglent equipment calibration and Easytest here:
https://www.eevblog.com/forum/testgear/siglent-technical-support-join-in-eevblog/msg986796/#msg986796 (https://www.eevblog.com/forum/testgear/siglent-technical-support-join-in-eevblog/msg986796/#msg986796)

Please tell us why you need calibration, is it for traceability ?
Title: Re: Siglent NEW Bench DMMs SDM3055 and SDM3045X
Post by: tautech on January 05, 2017, 08:35:05 am
If the price is right it seems to be a "Legend" for 6 1/2 Digits !
Damn me hands are getting all sweaty. That would be beautiful to form a 3 unit row with 2xSDG2000X I have. Would be good unit to test & tear for Dave  :-+
It may not be any little different to the existing SDM3055.
Dave's already had a good look at the 3055, the link to it was in the OP:
https://www.eevblog.com/forum/blog/eevblog-829-siglent-sdm3055-bench-multimeter-teardown/ (https://www.eevblog.com/forum/blog/eevblog-829-siglent-sdm3055-bench-multimeter-teardown/)
Title: Re: Siglent NEW Bench DMMs SDM3055 and SDM3045X
Post by: SimonD on January 05, 2017, 09:21:01 am
Hi tautech,

What you mean when you say: "little different" ?
I'm sure you know something better than we know ...   ;)
Title: Re: Siglent NEW Bench DMMs SDM3055 and SDM3045X
Post by: jackenhack on January 07, 2017, 05:25:11 am
Anyone got a calibration manual for the SDM3055?
Let me know if this helps
http://www.siglentamerica.com/prodcut-wd.aspx?id=176&tid=37&T=2 (http://www.siglentamerica.com/prodcut-wd.aspx?id=176&tid=37&T=2)

Edit
The Service manual lists the key equipment required as:
Keysight 34172B
Fluke 5522A
Siglent SDG2000X
PC with Easytest software

I've been in contact with my distributor, but they don't have access to the Easytest software. Can't find it when searching either. Waiting for reply from Siglent.

Jacken
More small info on Siglent equipment calibration and Easytest here:
https://www.eevblog.com/forum/testgear/siglent-technical-support-join-in-eevblog/msg986796/#msg986796 (https://www.eevblog.com/forum/testgear/siglent-technical-support-join-in-eevblog/msg986796/#msg986796)

Please tell us why you need calibration, is it for traceability ?

I just want it to be accurate. I have borrowed a very good reference, and my Brymen is spot on. Not the Siglent unfortunately.


Sent from my iPad using Tapatalk
Title: Re: Siglent NEW Bench DMMs SDM3055 and SDM3045X
Post by: tautech on January 07, 2017, 06:22:16 am
All the 1 year accuracy specs are listed in the Datasheet, I'm interested to know which measurement ranges fall outside those specs ?
http://www.siglentamerica.com/USA_website_2014/Documents/DataSheet/SDM3055x_DataSheet_DS06035-E02B.pdf (http://www.siglentamerica.com/USA_website_2014/Documents/DataSheet/SDM3055x_DataSheet_DS06035-E02B.pdf)
Title: Re: Siglent NEW Bench DMMs SDM3055 and SDM3045X
Post by: sync on January 07, 2017, 01:46:24 pm
It may not be any little different to the existing SDM3055.
I compared the data sheets and think they are different.
The old 3055 has high input impedance up to the 2V range. The 3065x up to the 20V range  :-+ . The DCV front end should be different. I think the 3065x will be using a bootstrapped input amplifier.
The 3055 has two current shunts, the 3065x has three.
And I expecting a LM399 voltage reference in the 3065x.
Title: Re: Siglent NEW Bench DMMs SDM3055 and SDM3045X
Post by: rf-loop on January 08, 2017, 09:26:11 am
Anyone got a calibration manual for the SDM3055?
Let me know if this helps
http://www.siglentamerica.com/prodcut-wd.aspx?id=176&tid=37&T=2 (http://www.siglentamerica.com/prodcut-wd.aspx?id=176&tid=37&T=2)

Edit
The Service manual lists the key equipment required as:
Keysight 34172B
Fluke 5522A
Siglent SDG2000X
PC with Easytest software

I've been in contact with my distributor, but they don't have access to the Easytest software. Can't find it when searching either. Waiting for reply from Siglent.

Jacken
More small info on Siglent equipment calibration and Easytest here:
https://www.eevblog.com/forum/testgear/siglent-technical-support-join-in-eevblog/msg986796/#msg986796 (https://www.eevblog.com/forum/testgear/siglent-technical-support-join-in-eevblog/msg986796/#msg986796)

Please tell us why you need calibration, is it for traceability ?

I just want it to be accurate. I have borrowed a very good reference, and my Brymen is spot on. Not the Siglent unfortunately.


Sent from my iPad using Tapatalk

Real trusted full accuracy test data please.
Also real data about "trusted very good reference".
Title: Re: Siglent NEW Bench DMMs SDM3055 and SDM3045X
Post by: jackenhack on January 08, 2017, 08:06:43 pm
All the 1 year accuracy specs are listed in the Datasheet, I'm interested to know which measurement ranges fall outside those specs ?
http://www.siglentamerica.com/USA_website_2014/Documents/DataSheet/SDM3055x_DataSheet_DS06035-E02B.pdf (http://www.siglentamerica.com/USA_website_2014/Documents/DataSheet/SDM3055x_DataSheet_DS06035-E02B.pdf)

My SDM3055 is off by around .150 Volt at 5 Volt range. I've had it for around one and a half year.

Jacken
Title: Re: Siglent NEW Bench DMMs SDM3055 and SDM3045X
Post by: tautech on January 08, 2017, 08:13:08 pm
All the 1 year accuracy specs are listed in the Datasheet, I'm interested to know which measurement ranges fall outside those specs ?
http://www.siglentamerica.com/USA_website_2014/Documents/DataSheet/SDM3055x_DataSheet_DS06035-E02B.pdf (http://www.siglentamerica.com/USA_website_2014/Documents/DataSheet/SDM3055x_DataSheet_DS06035-E02B.pdf)

My SDM3055 is off by around .150 Volt at 5 Volt range. I've had it for around one and a half year.

Jacken
If your reference is as good as you say it is then indeed that seems an excessive error.
Let us know how you get on with your contact to Tech support, the guy I normally contact is off work until after the Chinese New Year But he has sent me sample EasyTest scripts so I'm sure we can get one for you.
PM me if you wish.

Title: Re: Siglent NEW Bench DMMs SDM3055 and SDM3045X
Post by: rf-loop on January 08, 2017, 09:26:07 pm
All the 1 year accuracy specs are listed in the Datasheet, I'm interested to know which measurement ranges fall outside those specs ?
http://www.siglentamerica.com/USA_website_2014/Documents/DataSheet/SDM3055x_DataSheet_DS06035-E02B.pdf (http://www.siglentamerica.com/USA_website_2014/Documents/DataSheet/SDM3055x_DataSheet_DS06035-E02B.pdf)

My SDM3055 is off by around .150 Volt at 5 Volt range. I've had it for around one and a half year.

Jacken

SDM3055 do not have 5V range at all. Most near 5V is 20V range.

Tell us what is your reference voltage and guaranteed maximum error. Then tell us what SDM3055 show, exactly,  when it is well (30min) stabilized to 23 +5 celsius environment and settings as deafault.
Then Max, Min, Average and SD, use example 1k samples and slow measurement..

0.15V error @5VDC is really gigantic error.  Some things are now badly skewed.
My old Metrix 202 analog is more accurate.



But, if it show 5,00000V reference DC using 20V range so that result is 0.15V off it really is like fail.
Title: Re: Siglent NEW Bench DMMs SDM3055 and SDM3045X
Post by: Muttley Snickers on February 04, 2017, 11:30:24 pm
It would appear that RS Components have adopted the Siglent SDM-3055 as their own, it must be special particularly at the prices they are asking.   ??? :o ::) :P

Title: Re: Siglent NEW Bench DMMs SDM3055 and SDM3045X
Post by: Tjuurko on February 06, 2017, 09:10:30 am
http://www.siglentamerica.com/USA_website_2014/Documents/DataSheet/SDM3055x_DataSheet_DS06035-E02B.pdf (http://www.siglentamerica.com/USA_website_2014/Documents/DataSheet/SDM3055x_DataSheet_DS06035-E02B.pdf)

Temperature Characteristic
Function: Temperature
Probe Type: RTD (Specifications are for 4-wire measure)

How can I make a 4-wire connection for the Pt100?
Title: Re: Siglent NEW Bench DMMs SDM3055 and SDM3045X
Post by: tautech on February 06, 2017, 09:35:36 am
http://www.siglentamerica.com/USA_website_2014/Documents/DataSheet/SDM3055x_DataSheet_DS06035-E02B.pdf (http://www.siglentamerica.com/USA_website_2014/Documents/DataSheet/SDM3055x_DataSheet_DS06035-E02B.pdf)

Temperature Characteristic
Function: Temperature
Probe Type: RTD (Specifications are for 4-wire measure)

How can I make a 4-wire connection for the Pt100?
Just as you would for 4 wire resistance measurements.

However there is only mention of 4 wire temp measurement in the Datasheet and I couldn't find any mention of 4 wire temp measurement in the User manuals, old or new.  :-//
All manuals:
http://www.siglentamerica.com/prodcut-wd.aspx?id=176&tid=37&T=2 (http://www.siglentamerica.com/prodcut-wd.aspx?id=176&tid=37&T=2)

User manual, see P35

Title: Re: Siglent NEW Bench DMMs SDM3055 and SDM3045X
Post by: SimonD on March 13, 2017, 07:21:25 am
Any news about the availability of SDM-3065X and 3055X-E in Europe / America ?
Title: Re: Siglent NEW Bench DMMs SDM3055 and SDM3045X
Post by: tautech on March 13, 2017, 07:56:26 am
Any news about the availability of SDM-3065X and 3055X-E in Europe / America ?
Soon TBA
Title: Re: Siglent NEW Bench DMMs SDM3055 and SDM3045X
Post by: ScottK on April 03, 2017, 03:55:59 am
Any news about the availability of SDM-3065X and 3055X-E in Europe / America ?
Soon TBA

https://www.youtube.com/watch?v=gDVO2N9maYM (https://www.youtube.com/watch?v=gDVO2N9maYM)
Title: Re: Siglent NEW Bench DMMs SDM3055 and SDM3045X
Post by: H.O on April 07, 2017, 06:19:24 am
Any news about the availability of SDM-3065X and 3055X-E in Europe / America ?
Soon TBA
BatterFly now have stock in Europe. They had it listed at €539 in January, now it's €759 (+VAT).
Title: Re: Siglent NEW Bench DMMs SDM3055 and SDM3045X
Post by: simone.pignatti on April 07, 2017, 07:24:08 am
Any news about the availability of SDM-3065X and 3055X-E in Europe / America ?
Soon TBA
BatterFly now have stock in Europe. They had it listed at €539 in January, now it's €759 (+VAT).

Yes in the mean while Siglent has fixed the price, we will be happy to offer discounts code in case of interest.
Would you like us to test the unit and make a video?
What would you like to see?
I have one unit sitting on my desk
Title: Re: Siglent NEW Bench DMMs SDM3055 and SDM3045X
Post by: H.O on April 07, 2017, 10:44:15 am
They fixed the price? I'd say they broke it.

I understand what you mean though but for me the SDM3065X just became a lot less attractive.

BTW, I was looking at the accuracy specifications in the datasheet (http://www.batterfly.com/PDF/Siglent/Siglent-SDM3065X-BF.pdf) for the SDM3065X and noticed that they looks remarkably similar to those for the DM3068. There doesn't seem to be a single digit difference anywhere. Are these sort of performance numbers just mathematically calculated, tested and verified on actual instruments or just copied from the competing products datasheet?

Here's an example of the DC Voltage range
Code: [Select]
Accuracy Specifications: ±% of reading + % of range)
1 Year, TCAL +/-5°C

RANGE RIGOL DM3068 SIGLENT SDM3065X

200mVDC 0.0040 + 0.0025 0.0040 + 0.0025
2VDC 0.0035 + 0.0006 0.0035 + 0.0006
20VDC 0.0040 + 0.0005 0.0040 + 0.0005
200VDC 0.0050 + 0.0006 0.0050 + 0.0006
10000VDC 0.0055 + 0.0010 0.0055 + 0.0010

200UA 0.050 + 0.015 0.050 + 0.015
2mA 0.050 + 0.003 0.050 + 0.003
20mA 0.050 + 0.015 0.050 + 0.015
200mA 0.050 + 0.003 0.050 + 0.003
2A 0.100 + 0.020 0.100 + 0.020
10A 0.150 + 0.010 0.150 + 0.010

200ohm 0.010 + 0.004 0.010 + 0.004
2kohm 0.010 + 0.001 0.010 + 0.001
20kohm 0.010 + 0.001 0.010 + 0.001
200kohm 0.010 + 0.001 0.010 + 0.001
1M 0.012 + 0.001 0.012 + 0.001
10M 0.040 + 0.001 0.040 + 0.001
Title: Re: Siglent NEW Bench DMMs SDM3055 and SDM3045X
Post by: nctnico on April 07, 2017, 11:05:13 am
Any news about the availability of SDM-3065X and 3055X-E in Europe / America ?
Soon TBA
BatterFly now have stock in Europe. They had it listed at €539 in January, now it's €759 (+VAT).
At that price you better buy the real deal: a Keysight 34461A
Title: Re: Siglent NEW Bench DMMs SDM3055 and SDM3045X
Post by: simone.pignatti on April 07, 2017, 11:06:28 am
Any news about the availability of SDM-3065X and 3055X-E in Europe / America ?
Soon TBA
BatterFly now have stock in Europe. They had it listed at €539 in January, now it's €759 (+VAT).
At that price you better buy the real deal: a Keysight 34461A
we were also surprised about the final price  :-//
Title: Re: Siglent NEW Bench DMMs SDM3055 and SDM3045X
Post by: SimonD on April 07, 2017, 11:23:08 am
I agree.
The "fixed" price for me was a big disappointment !   :palm:
I don't find it so competitive anymore.
Previously (at 539€) i was a prospective buyer, but now ...
I will wait to see the value of the expected SDM3055X-E and if they "fix it" too, i will go for something like 34401A or Keithley 2000, 2015 etc.
Title: Re: Siglent NEW Bench DMMs SDM3055 and SDM3045X
Post by: Geoff_S on April 13, 2017, 11:43:24 pm
I was considering buying either a Siglent or a Rigol DMM, and went on to TEquipment's site to compare prices.  Looks like they don't stock Siglent anymore.  Does anyone know when they stopped (and why) ?
Title: Re: Siglent NEW Bench DMMs SDM3055 and SDM3045X
Post by: tautech on April 14, 2017, 12:59:41 am
I was considering buying either a Siglent or a Rigol DMM, and went on to TEquipment's site to compare prices.  Looks like they don't stock Siglent anymore.  Does anyone know when they stopped (and why) ?
Does it matter ?  :-//

Saelig now handle many Siglent online sales and if you need more local support you can find those close to you via this link:
http://siglentamerica.com/how_to_buy (http://siglentamerica.com/how_to_buy)

Saelig also offer discounts to EEVblog members and you can ask for their code in this thread:
https://www.eevblog.com/forum/testgear/equipment-discounts-from-saelig/ (https://www.eevblog.com/forum/testgear/equipment-discounts-from-saelig/)
Title: Re: Siglent NEW Bench DMMs SDM3055 and SDM3045X
Post by: tautech on April 14, 2017, 03:25:28 am
Are these sort of performance numbers just mathematically calculated, tested and verified on actual instruments or just copied from the competing products datasheet?
Looking at a SDM3045X Cal cert, specifications are checked against a Fluke 5522A multi product calibrator and its SN# is also listed for traceability. Once there's some 3065X's in the wild we'll have some idea if they use the same calibrator....I guess they would.
Should have mine late next week.
Title: Re: Siglent NEW Bench DMMs SDM3055 and SDM3045X
Post by: nctnico on April 14, 2017, 08:46:19 am
Are these sort of performance numbers just mathematically calculated, tested and verified on actual instruments or just copied from the competing products datasheet?
Looking at a SDM3045X Cal cert, specifications are checked against a Fluke 5522A multi product calibrator and its SN# is also listed for traceability. Once there's some 3065X's in the wild we'll have some idea if they use the same calibrator....I guess they would.
Should have mine late next week.
A sheet with calibration results is just a snapshot. It says nothing about the long(er) term stability of an instrument. For the latter you have to rely on the specifications so the question of H.O still stands. The specifications also seem to match the Keysight 34465A DMM. It takes some serious volt nuttery and experience to get to these levels of long term stability performance.
Title: Re: Siglent NEW Bench DMMs SDM3055 and SDM3045X
Post by: SimonD on April 26, 2017, 06:16:50 am
SDM3065X. We have the official price and presence at American and European Siglent sites. 729$ and 689€. Still remains a little bit expensive for me.

http://siglentamerica.com/pdxx.aspx?id=5211&T=2&tid=37. (http://siglentamerica.com/pdxx.aspx?id=5211&T=2&tid=37.)
http://siglenteu.com/pdxx.aspx?id=2773&T=2&tid=37. (http://siglenteu.com/pdxx.aspx?id=2773&T=2&tid=37.)

So, simone.pignatti (Batterfly) you have to "reduce" the list price.   ;) The coupons for the members remains a very good idea for those who interested. (And maybe for other products too).
Title: Re: Siglent NEW Bench DMMs SDM3055 and SDM3045X
Post by: simone.pignatti on April 26, 2017, 07:36:26 am
SDM3065X. We have the official price and presence at American and European Siglent sites. 729$ and 689€. Still remains a little bit expensive for me.

http://siglentamerica.com/pdxx.aspx?id=5211&T=2&tid=37. (http://siglentamerica.com/pdxx.aspx?id=5211&T=2&tid=37.)
http://siglenteu.com/pdxx.aspx?id=2773&T=2&tid=37. (http://siglenteu.com/pdxx.aspx?id=2773&T=2&tid=37.)

So, simone.pignatti (Batterfly) you have to "reduce" the list price.   ;) The coupons for the members remains a very good idea for those who interested. (And maybe for other products too).

Hello, the SDM3065X price is now updated. As per your request, discount codes are available, just ask. Thanks.
Title: Re: Siglent NEW Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: tautech on April 26, 2017, 11:46:07 am
Some pics for comparison as the SDM3065X is ~50mm longer than its 2 little brothers:

(https://www.eevblog.com/forum/testgear/siglent-new-bench-dmm-sdm3055/?action=dlattach;attach=310969)

From top to bottom: SDM3045X, SDM5055 and SDM3065X

(https://www.eevblog.com/forum/testgear/siglent-new-bench-dmm-sdm3055/?action=dlattach;attach=310971)

Measuring 6V Gell cell.
Note: SDM3045X has different measuring ranges but while it did not display Overload on its 6V range for some better comparison was switched to next range up: 60V while SDM3065X and 3055 were on 20V range.


Heeeelp, I'm turning into a Volt nut.  :scared:
Title: Re: Siglent NEW Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: kj7e on April 27, 2017, 04:13:40 am
Some pics for comparison as the SDM3065X is ~50mm longer than its 2 little brothers:

(https://www.eevblog.com/forum/testgear/siglent-new-bench-dmm-sdm3055/?action=dlattach;attach=310969)

From top to bottom: SDM3045X, SDM5055 and SDM3065X

(https://www.eevblog.com/forum/testgear/siglent-new-bench-dmm-sdm3055/?action=dlattach;attach=310971)

Measuring 6V Gell cell.
Note: SDM3045X has different measuring ranges but while it did not display Overload on its 6V range for some better comparison was switched to next range up: 60V while SDM3065X and 3055 were on 20V range.


Heeeelp, I'm turning into a Volt nut.  :scared:

Please take the cover off and post a few internal photos  :-+
Title: Re: Siglent NEW Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: EEVblog on April 27, 2017, 04:15:18 am
Please take the cover off and post a few internal photos  :-+

I have a SDM3065X in the lab, I think it will be my next teardown.
Title: Re: Siglent NEW Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: CustomEngineerer on April 27, 2017, 04:58:21 am
Heeeelp, I'm turning into a Volt nut.  :scared:

I can help. Just ship any and all meters you have in stock to me so you can return to your normal life.
Title: Re: Siglent NEW Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: kj7e on April 27, 2017, 06:00:12 am
Please take the cover off and post a few internal photos  :-+

I have a SDM3065X in the lab, I think it will be my next teardown.

YES!
Title: Re: Siglent NEW Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: tautech on April 27, 2017, 06:05:05 am
Heeeelp, I'm turning into a Volt nut.  :scared:

I can help. Just ship any and all meters you have in stock to me so you can return to your normal life.
:-DD

Nah, I'll only keep one but which one ?  :-/O

I think the SDM3065X might go to an existing customer and EEVblog member not too far away for a little while and some YouTube review time.... we've just started a discussion about it.  8)
Title: Re: Siglent NEW Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: Aeternam on May 03, 2017, 07:01:58 pm
Looks like Batronix has the SDM3065X in stock now: http://www.batronix.com/shop/multimeter/Siglent-SDM3065X.html (http://www.batronix.com/shop/multimeter/Siglent-SDM3065X.html)

I wonder if there will ever be a sans-GPIB "light" version?
Title: Re: Siglent NEW Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: tautech on May 03, 2017, 07:18:28 pm
Siglent are slowly rolling out open LAN ports for many products as a workaround the need for GPIB.
Open LAN ports are present in the SDM3000 range.

They also have a USB-GPIB adapter that's compatible with most of their products and listed as an accessory for SDM3000 range.
http://siglentamerica.com/prodcut-fjxx.aspx?fjid=1198&id=5211&tid=37&T=2 (http://siglentamerica.com/prodcut-fjxx.aspx?fjid=1198&id=5211&tid=37&T=2)

Edit
LAN port comment updated
Title: Re: Siglent NEW Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: kj7e on May 03, 2017, 08:03:56 pm
I should have my SDM3065X tomorrow.  I'll post some info once I have a chance to play with it.
Title: Re: Siglent NEW Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: kj7e on May 04, 2017, 08:44:30 pm
Only had it powered on for 45 min but so far I'm not disappointed.

@23deg C

SDM3065x powered on for 30min, cold power on of the 10v LT1021 Doug Malone reference (calibrated last week).  The LT1021 took about 10 min to settle.
(http://i241.photobucket.com/albums/ff146/wsmc551/23882328-01D8-442B-8288-B7FF6172CF1B.jpg) (http://s241.photobucket.com/user/wsmc551/media/23882328-01D8-442B-8288-B7FF6172CF1B.jpg.html)

(http://i241.photobucket.com/albums/ff146/wsmc551/B87161C7-534E-4B58-ADD9-B0D16FCB8DE2.jpg) (http://s241.photobucket.com/user/wsmc551/media/B87161C7-534E-4B58-ADD9-B0D16FCB8DE2.jpg.html)

100uV span zoom, you can see the A to D resolution here.
(http://i241.photobucket.com/albums/ff146/wsmc551/AC49DC33-74E3-475F-93AD-AB1A9BBD3730.jpg) (http://s241.photobucket.com/user/wsmc551/media/AC49DC33-74E3-475F-93AD-AB1A9BBD3730.jpg.html)

Center comes out to 10.000008, so basically its perfectly agrees with Doug's cal.  Have to get back to work, will post more later.

Title: Re: Siglent NEW Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: tautech on May 04, 2017, 08:56:25 pm
Nice kj7e.  :-+
Have a look through the UI for how to grab screenshots onto a USB stick.
Might be a bit simpler and faster than using a camera if you don't need to show the setup.

Looking forward to you digging deeper into this unit.
Title: Re: Siglent NEW Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: kj7e on May 04, 2017, 09:06:08 pm
Yes you can grab and save screen shots to the USB, but this was faster and easier in my particular case at the moment.
Title: Re: Siglent NEW Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: mleyden on May 04, 2017, 10:29:59 pm
I managed to get one from Batterfly... happy so far.

Noticed today that it doesn't have DHCP on the LAN setting. Come on Siglent, pull the finger out!
Title: Re: Siglent NEW Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: matemathieu on May 11, 2017, 09:12:32 pm
Please Dave, do. I'd like to know what to expect from them.
Just because they figured their issues with chassis rust  :P

Additionally, it would be interesting to see, depending on their choice of parts and Vref, if they would be able to hold on their calibration over time as HPs 3478A are doing. These HP DMMs are fascinating!
Title: Re: Siglent NEW Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: TheDefpom on May 12, 2017, 12:06:18 am
My review of the SDM3065X is shown below:

https://youtu.be/k6HE8qV3CA4
Title: Re: Siglent NEW Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: kj7e on May 13, 2017, 01:53:33 pm
Please Dave, do. I'd like to know what to expect from them.
Just because they figured their issues with chassis rust  :P

Additionally, it would be interesting to see, depending on their choice of parts and Vref, if they would be able to hold on their calibration over time as HPs 3478A are doing. These HP DMMs are fascinating!

The reference in the sdm3065x is a LM399.

I did some testing of both the warmup time, tempco stability, and overall calibration.  So far it seems Siglent did a good job with the initial cal.

Testing some very accurate resistors;
https://www.eevblog.com/forum/metrology/resistance-standard-shielding-how-important-is-it/msg1205528/#msg1205528 (https://www.eevblog.com/forum/metrology/resistance-standard-shielding-how-important-is-it/msg1205528/#msg1205528)

DC Voltage tests and tempco drift;
https://www.eevblog.com/forum/metrology/34461a-warm-up-time-vs-sdm3065x/msg1201676/#msg1201676 (https://www.eevblog.com/forum/metrology/34461a-warm-up-time-vs-sdm3065x/msg1201676/#msg1201676)

I also have one of Ian Johnstons PDVS2's which also uses a LM399 reference, tested between 10mV to 10V and the two units agree almost exactly, well within the error budget of just one single unit.
Title: Re: Siglent NEW Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: flash2b on June 20, 2017, 09:11:36 pm
Just found out that Siglent has released a total new EasyDDM software package that supports all Siglent SDM series meters.

It is not on the main Siglent site, but I found a link on siglent.eu : https://www.siglent.eu/Downloads#Software  (https://www.siglent.eu/Downloads#Software)

The version is: Version: 1.01.02.01.03 | Published | 2017-05-24

It has a totally new look and feel compared to the old version and looks much more professional:

(https://www.uploadarchief.net:443/files/download/neweasysdm.png)

Thank you Siglent !!




Title: Re: Siglent NEW Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: TheDefpom on June 20, 2017, 10:32:23 pm
I did a usage review of this software in May, it came with the SDM3065X I reviewed.

https://www.youtube.com/watch?v=YqdHtDw_zgo (https://www.youtube.com/watch?v=YqdHtDw_zgo)
Title: Re: Siglent NEW Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: Siglent America on June 21, 2017, 01:59:03 pm
Yes, the software also supports the new multi-channel scanner card option (not retrofittable) for the SDM3055 and DM3065X models. The scanner option will not be available on the SDM3045X.
Title: Re: Siglent NEW Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: sstepane on June 22, 2017, 12:54:21 pm
Hi there,

Is anyone knows what is the latest firmware for SDM3055 device? Siglent website does not have any updates on this subject.

Thanks in advance!
Title: Re: Siglent NEW Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: Siglent America on June 22, 2017, 12:58:48 pm
Hi there,

Is anyone knows what is the latest firmware for SDM3055 device? Siglent website does not have any updates on this subject.

Thanks in advance!

Hello.
I show it to be
Current Version: P01.16R2 | Published?2016-03-22
It can be found at
http://www.siglentamerica.com/prodcut-gjjrj.aspx?id=176&tid=37&T=2 (http://www.siglentamerica.com/prodcut-gjjrj.aspx?id=176&tid=37&T=2)

You will also find updated EasyDMM there as well.
Title: Re: Siglent NEW Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: sstepane on June 27, 2017, 09:08:32 am
Dear Siglent,

Another question - I have not found any mentioning on possibility to measure resistance with lover voltage on leads. That feature is common on some DMMs - for example - measuring resistance with 0.2 to 0.5 V for on-board testing not to turn any semiconductor devices. Is this possible with SDM3055 or might be possible with future update?
Title: Re: Siglent NEW Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: Siglent America on June 28, 2017, 03:05:20 pm
Dear Siglent,

Another question - I have not found any mentioning on possibility to measure resistance with lover voltage on leads. That feature is common on some DMMs - for example - measuring resistance with 0.2 to 0.5 V for on-board testing not to turn any semiconductor devices. Is this possible with SDM3055 or might be possible with future update?

Hi.
We happened to be exhibiting at a show this week and one of the larger, older test equipment companies had a booth right next to Siglent. We asked one of their people if their line of DMMs had this feature (they have many more models than do we) and he said that only one of their models did and that it was the high-end lab model. So their 4.5, 5.5, and 6.5 digit models did not.

We will enter this into our "wants list" but we know of no plans to add it in the near future.
Title: Re: Siglent NEW Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: sstepane on June 28, 2017, 03:42:11 pm
Thanks for this clarification. Hopefully I have Appa 109N, which being portable is capable of such a function.
I'd like to ask another question - regarding temperature measuring. I've noticed that K-type probe, which works Ok with my Appa 109N DMM is showing approx. +4 celcium degrees on SDM3055. I have found no way to calibrate it or do anything with this situation. Is there some procedure for changing ITS90 tables inside the device, or calibrating the probe?
Title: Re: Siglent NEW Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: Siglent America on June 28, 2017, 07:25:51 pm
Thanks for this clarification. Hopefully I have Appa 109N, which being portable is capable of such a function.
I'd like to ask another question - regarding temperature measuring. I've noticed that K-type probe, which works Ok with my Appa 109N DMM is showing approx. +4 celcium degrees on SDM3055. I have found no way to calibrate it or do anything with this situation. Is there some procedure for changing ITS90 tables inside the device, or calibrating the probe?

I don't know of any user-adjustable way to change the Temperature calibration on the SDM3065X.

I noticed the accuracy of the Appa 109N is listed as 0.1% + 3 deg C.
The SDM3065X accuracy for a K thermocouple is 0.5 dec C after a 90 minute warm-up. It also has built in cold-junction compensation.
Title: Re: Siglent NEW Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: sstepane on June 28, 2017, 10:00:19 pm
I don't know of any user-adjustable way to change the Temperature calibration on the SDM3065X.

I noticed the accuracy of the Appa 109N is listed as 0.1% + 3 deg C.
The SDM3065X accuracy for a K thermocouple is 0.5 dec C after a 90 minute warm-up. It also has built in cold-junction compensation.

Well, yes, but temperature of my fingers cannot be 39 degrees celsius. It's more like 33-34, like Appa displays.
Anyway, will test it with other probes in a couple days.
And this is regarding SDM3055 unit, not 3065X.
Title: Re: Siglent NEW Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: Siglent America on June 29, 2017, 12:06:24 pm
I don't know of any user-adjustable way to change the Temperature calibration on the SDM3065X.

I noticed the accuracy of the Appa 109N is listed as 0.1% + 3 deg C.
The SDM3065X accuracy for a K thermocouple is 0.5 dec C after a 90 minute warm-up. It also has built in cold-junction compensation.

Well, yes, but temperature of my fingers cannot be 39 degrees celsius. It's more like 33-34, like Appa displays.
Anyway, will test it with other probes in a couple days.
And this is regarding SDM3055 unit, not 3065X.

PM sent
Title: Re: Siglent NEW Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: Elrod on June 30, 2017, 01:26:45 pm
Hello,
I  have an SDM3055 with firmware 1.01.01.16R2.  My continuity beeper has failed.  Totally silent no matter what setting.  I have loaded factory defaults, still no beeper.  If I go to Board Test mode and press Beeper, no sound.  Has anyone else seen this?

Elrod
Title: Re: Siglent NEW Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: tautech on July 03, 2017, 11:05:53 pm
Hello,
I  have an SDM3055 with firmware 1.01.01.16R2.  My continuity beeper has failed.  Totally silent no matter what setting.  I have loaded factory defaults, still no beeper.  If I go to Board Test mode and press Beeper, no sound.  Has anyone else seen this?

Elrod
Just checked mine...........yep you have a problem.  :(
Use any of the links here to contact your closest Siglent branch for support:
http://www.siglent.com/ENs/lxwms.aspx?id=1337 (http://www.siglent.com/ENs/lxwms.aspx?id=1337)
Title: Re: Siglent NEW Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: tautech on July 03, 2017, 11:34:03 pm
Hello,
I  have an SDM3055 with firmware 1.01.01.16R2.  My continuity beeper has failed.  Totally silent no matter what setting.  I have loaded factory defaults, still no beeper.  If I go to Board Test mode and press Beeper, no sound.  Has anyone else seen this?

Elrod
Just checked mine...........yep you have a problem.  :(
Use any of the links here to contact your closest Siglent branch for support:
http://www.siglent.com/ENs/lxwms.aspx?id=1337 (http://www.siglent.com/ENs/lxwms.aspx?id=1337)
@ Elrod
Stumbled on this post about a beeper bug some time ago:
https://www.eevblog.com/forum/testgear/siglent-new-bench-dmm-sdm3055/msg1016363/#msg1016363 (https://www.eevblog.com/forum/testgear/siglent-new-bench-dmm-sdm3055/msg1016363/#msg1016363)
Mentions toggling the beeper ON and OFF and the problem disappears. Have you tried that ?
Title: Re: Siglent NEW Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: Elrod on July 04, 2017, 02:03:10 am
Yes, I have tried toggling the beeper ON and OFF.  Still no beeper.  I have tried leaving it unplugged for a while and loading factory settings.  Total silence.  Very odd.  Everything else is fine.  I started to open it up and see if there was a bad solder connection.  I decided to check the warranty first.  3 years.  I've had mine about a 1.5 years.  I have tried emailing the address on the website.  No reply.

Elrod
Title: Re: Siglent NEW Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: tautech on July 04, 2017, 02:12:03 am
Yes, I have tried toggling the beeper ON and OFF.  Still no beeper.  I have tried leaving it unplugged for a while and loading factory settings.  Total silence.  Very odd.  Everything else is fine.  I started to open it up and see if there was a bad solder connection.  I decided to check the warranty first.  3 years.  I've had mine about a 1.5 years.  I have tried emailing the address on the website.  No reply.

Elrod
Which email ?
There is no info in your profile to indicate which part of the world you are in so I can't recommend one in your timezone.
Yes the warranty is 3 years, please don't open it before you hear from a Siglent rep.
They will advise you of the next steps you need to take.

Have you contacted your supplier ?

BTW, just shot an email to the factory tech support...........they may PM you.
Title: Siglent NEW Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: ivan747 on July 04, 2017, 02:38:31 am
It seems that this is their very first multimeter ever released. Then I do not want it. It has a color LCD, so it must be full of bugs.
I would trust GW Instek multimeters instead. Yes, they make some so-so scopes, but they still work as promised. Almost.

"This multimeter has a color LCD, so it must be full of bugs"

I love it.

My sentiments exactly.


I will let them work out the issues for a year or two and we will see :)
Title: Re: Siglent NEW Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: Elrod on July 04, 2017, 02:48:16 pm
Tautech,
I have updated my profile.  I sent an email to info@siglent.com.  I bought the SDM3055 from TEquipment.net who I believe no longer carry Siglent.
Title: Re: Siglent NEW Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: tautech on July 04, 2017, 07:41:11 pm
Tautech,
I have updated my profile.  I sent an email to info@siglent.com.  I bought the SDM3055 from TEquipment.net who I believe no longer carry Siglent.
Good.
Check you profile for a PM from the factory otherwise Steve and the guys for Ohio will be in touch.
Factory Tech support mentioned to me it is most likely a buzzer HW failure and they will fix it.
Title: Re: Siglent NEW Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: Elrod on July 06, 2017, 12:19:45 am
I received an email from Siglent in Ohio and it included an RMA number.  My SDM3055 is on its way for repair.

Thank You Tautech
Title: Re: Siglent NEW Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: Brandon_K on July 06, 2017, 02:39:02 am
Tautech,
I have updated my profile.  I sent an email to info@siglent.com.  I bought the SDM3055 from TEquipment.net who I believe no longer carry Siglent.
Good.
Check you profile for a PM from the factory otherwise Steve and the guys for Ohio will be in touch.
Factory Tech support mentioned to me it is most likely a buzzer HW failure and they will fix it.
Is Steve with Micro Sales on Perimeter Loop in Dublin Ohio?

I'll actually be in Columbus about 15 miles from those guys from the 14th through the 22nd on business. I wonder if I could get a demo unit from them to play with.

Sent from my SM-N920V using Tapatalk

Title: Re: Siglent NEW Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: tautech on July 06, 2017, 07:01:41 am
Tautech,
I have updated my profile.  I sent an email to info@siglent.com.  I bought the SDM3055 from TEquipment.net who I believe no longer carry Siglent.
Good.
Check you profile for a PM from the factory otherwise Steve and the guys for Ohio will be in touch.
Factory Tech support mentioned to me it is most likely a buzzer HW failure and they will fix it.
Is Steve with Micro Sales on Perimeter Loop in Dublin Ohio?
No.

This Steve:
https://www.eevblog.com/forum/profile/?u=97174 (https://www.eevblog.com/forum/profile/?u=97174)

SIGLENT Technologies America, Inc
6557 Cochran Rd Solon, Ohio 44139

I'm sure they'd show you all you needed to know if you popped by.
Title: Re: Siglent NEW Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: tautech on August 31, 2017, 11:03:02 am
For owners of SDM3065X ONLY, there is new firmware.

http://siglentamerica.com/gjjrj-xq.aspx?id=6414&tid=15 (http://siglentamerica.com/gjjrj-xq.aspx?id=6414&tid=15)

Version: V3.01.01.03
6.9 Mb

Changelog
1.  Add U disk recovery function.
2.  Add the update of the calibration data function.
3.  Fix the bug of a few abnormal DCV measurements when the input terminal is shorted .
4.  Repair the external trigger problem.
5.  Some FPGA optimizations.
Title: Re: Siglent NEW Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: Eric-H on August 31, 2017, 01:35:10 pm
The SDM3055 also got new firmware:

http://siglentamerica.com/gjjrj-xq.aspx?id=6413&tid=15 (http://siglentamerica.com/gjjrj-xq.aspx?id=6413&tid=15)

ReleaseDate
8/31/2017 1:53:15 AM
Version: V1.01.01.19
Imprint

1.  Add U disk recovery function.
2.  Modify Hold function arithmetic.
3.  Add the telnet SCPI function.
4.  Repair the external trig problem.
Title: Re: Siglent NEW Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: flash2b on August 31, 2017, 03:02:11 pm
Thanx Eric-H !

Just installed on my SDM3055 and installation went fine. The beeper bug I reported before is also solved. Thank you Siglent !
Title: Re: Siglent NEW Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: tautech on September 18, 2017, 02:37:55 am
To add to the other recent SDM30** FW:

SDM3045X
Version: V5.01.01.03
6.7 Mb

http://siglentamerica.com/gjjrj-xq.aspx?id=6427&tid=15 (http://siglentamerica.com/gjjrj-xq.aspx?id=6427&tid=15)

Changelog
1.   Add U disk recovery function.
2.   Modify Hold function arithmetic.
3.   Add the telnet SCPI function; port is 5024
   Example: telnet 192.168.0.105024
Title: Re: Siglent NEW Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: jtammine on October 22, 2017, 04:53:39 pm
Few months usage of SDM3065X behind, I just quickly verified that the equipment is still rust free ;) It looks like cutting edges of metal parts are coated or galvanized to black finish.

The reference voltage source is LM399H as expected and seems to be good enough for 6.5 digit multimeter. I can see clear difference in build quality and PCB layout comparing to the SDM3055 in Dave’s teardown, new teardown for SDM3065X would be nice to see from Dave :)
Title: Re: Siglent NEW Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: qpit3a on February 09, 2018, 07:32:13 am
Hi,

There is a bug that was identified in this meter 3045X that is shown in the linked video from TRX bench.  When he measures the DC offset (2V) of a 1Khz sine wave the Siglent measures low.  Does anyone who has used this multi meter know if this is a real bug and if so has it been fixed.  The current firmware seems to be 2  minor versions ahead of the version in the video (5.1.1.1 vs 5.1.1.3).    https://youtu.be/K09BLgyk9Hg?t=58m15s (https://youtu.be/K09BLgyk9Hg?t=58m15s)
Title: Re: Siglent NEW Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: Qw3rtzuiop on February 10, 2018, 10:12:47 am
I tried to recreate that bug but i wasnt able to. My meter is on version 5.1.1.3.
Title: Re: Siglent NEW Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: Joel_l on February 12, 2018, 04:14:47 pm
Anyone know why the scanner card is a factory installed option only? It's not like you don't remove it to wire it up. I've been eyeing the 3065x but am not sure if/when I might want the scanner card. Things would be much simpler if it could be added at any time.
Title: Re: Siglent NEW Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: Siglent America on February 12, 2018, 04:25:25 pm
Anyone know why the scanner card is a factory installed option only? It's not like you don't remove it to wire it up. I've been eyeing the 3065x but am not sure if/when I might want the scanner card. Things would be much simpler if it could be added at any time.

Hi Joel,
I understand and asked Engineering this question last year myself. It turns out that we have to install one or more additional ICs, on the main PCB of the DMM for that scanner card, that are not installed otherwise. There also may have been an additional connector that the standard unit does not have.

So it involves soldering SMD devices and connectors - which is why it is not retrofittable - and I believe the factory opted to keep the price down for a standard unit and leave those parts out.
Title: Re: Siglent NEW Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: Joel_l on February 12, 2018, 07:35:28 pm
That's unfortunate. Are the modules available separately so that test setups can be pre-wired?
Title: Re: Siglent NEW Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: Siglent America on February 12, 2018, 08:18:09 pm
That's unfortunate. Are the modules available separately so that test setups can be pre-wired?

The scanner card is tested and shipped with the unit so it cannot be pre-ordered. The scanner connections are quick-release so they shouldn't take long to wire up.
Title: Re: Siglent NEW Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: nctnico on February 12, 2018, 08:34:16 pm
These kind of connections should be made using pluggable terminal blocks so it is easier to use one piece of equipment in multiple test setups. This is not just my opinion but that of several of my customers when I design products for them.
Title: Re: Siglent NEW Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: tautech on February 12, 2018, 09:23:00 pm
That's unfortunate. Are the modules available separately so that test setups can be pre-wired?
Maybe.
Part of the reason they're not available as a post sales option (other than already mentioned) is all the 16 channels are connected to a calibrator and the base unit card inputs settings saved as particular to that scanner card.

Anyways, good question and one we'll need to ask the factory after their hols.


There is the owners option to build a wired test header and externally terminate into an array/selection of test looms to suit your needs. 110VAC and 2.3A max ratings needs to be observed in the choice of header.

Oh, and NO hot plugging of the scanner card.

Title: Re: Siglent NEW Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: Joel_l on February 13, 2018, 07:37:05 pm
It will be interesting to hear what they say. From my personal use perspective, it is probably not much of a hassle. In a past life I did reliability and qualification testing, swapping wires would not have been acceptable and an external dongle barely so. And if it's true that each card is somehow matched to the meter, that would have been a deal breaker.
Title: Re: Siglent NEW Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: tautech on February 13, 2018, 07:55:47 pm
It will be interesting to hear what they say. From my personal use perspective, it is probably not much of a hassle. In a past life I did reliability and qualification testing, swapping wires would not have been acceptable and an external dongle barely so. And if it's true that each card is somehow matched to the meter, that would have been a deal breaker.
Give me a reminder about this, say by the end of Feb.

It maybe just to calibrate out the meter to scanner card signal path and maybe the cards CAN be swapped, this I would hope is the case.
Title: Re: Siglent NEW Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: Gandalf_Sr on February 13, 2018, 08:23:52 pm
I received an email from Siglent in Ohio and it included an RMA number.  My SDM3055 is on its way for repair.

Lucky you; my SDS1202X-E that's 8 months old has the "in specification" 'feature' that requires me to re-adjust the probe compensation every time I change the Y range and all I got from Steve was surface mount capacitors sent to me as a DIY fix - oh and if I mess it up, my warranty's voided.

I have a Keysight 34461A 6.5 digit multimeter, it's great.
Title: Re: Siglent NEW Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: Joel_l on February 14, 2018, 03:15:17 pm
Even KS has their issues, I was about to buy one of those when the max voltage issue came up. Checking a datasheet recently it looks like it's back to 1000V. If it was a HW change, wonder what they did for customers with downgraded units.
Title: Re: Siglent NEW Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: H.O on February 14, 2018, 03:31:36 pm
Apparently there never was an actual issue.
Someone said there might be so they took the safe route and degraded the meter while investigating after which it was determined to not be an issue so they changed the rating back. As far as I could understand from the interview Dave did with the Keysight rep they did do any changes to the hardware so they're all rated the same.
Title: Re: Siglent NEW Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: Joel_l on February 15, 2018, 01:50:36 am
That's good to hear. That was the impression I got while reading through the thread. Glad things are back to "normal".
Title: Re: Siglent NEW Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: CustomEngineerer on March 02, 2018, 06:24:54 am
After years of avoiding buying a bench DMM because as a hobbyist I really didn't need one I finally had a moment of weakness last year when the ITT surplus GWInstek GDM-8251A meters dropped to under $100 and bought one. Have enjoyed using it so much over the last year that lately I've been looking at some newer bench meters and finally settled on a Siglent SDM3055. I've had it for a little over a week now, and am really impressed with it. (one of) The obvious benefit over the GDM-8251A is the ease of configuring and setting up measurements since it has a bigger screen with soft buttons and menus (not just initial setup, but easily switching between options on different measurements). Also really liking being able to do the trend graphing directly on the meter, instead of always having to offload to the computer first. The EasyDMM software seems to work very well too for the times where I do want to capture the data on the computer.

I had ordered three of the different cheap ebay AD584 voltage references as well last year around the same time as the GDM-8251A. One of them came with a printed sheet of supposed measurements, that appeared to not have probably been real measurements (saw that several other people that ordered same one received identical printed "measurements"). However the other 2 references had the hand written measurements which at the time did seem to be realistic as measured by each of my other meters. I had documented what each of my meters measured at the time I received them, and rechecked both references again last week a both still measured the same with the GDM-8251A. Measuring with the new SDM3055 (so obviously had recently been factory calibrated) both references measured essentially spot on, with the better (at least more expensive) reference measured exactly what was printed on it, down to the last digit of the meter (though since the reference had been measured with a higher resolution meter by the seller, it showed one more digit than the SDM3055 was capable of). And even leaving the measurement for each range running all day, it stayed within 1 LSD. I realize they are just cheap ebay references, and may not ultimately mean anything, but was just surprised by that result.

I wanted to add my initial experience for anyone else considering one of these, but also wanted to give a big thank you to Tautech. Even though I never spoke directly to him about this purchase, every single question I had about the meter while researching I was able to find someone else had already asked, and every time Tautech had already given a detailed response to the question.
Title: Re: Siglent NEW Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: RF_Energy on March 18, 2018, 11:32:16 pm
Hi, i am looking for a new DMM for the bench, i do like the Siglent SDM3055, old guy's love the big screen, and a nice price :-DD, i did see it on the site here:
http://www.siglent.com/ENs/prodcut-db.aspx?id=176&tid=37&T=-1 (http://www.siglent.com/ENs/prodcut-db.aspx?id=176&tid=37&T=-1)
that there was a new model, the big bumpers from the X versions are now on it, also I've seen it on a video here:
https://www.youtube.com/watch?v=6wFlBXL66B0 (https://www.youtube.com/watch?v=6wFlBXL66B0)
Are there more changes, maybe in the hardware, or is it only new looks, but in the inside the same (old) hardware.
Title: Re: Siglent NEW Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: tautech on March 19, 2018, 06:18:13 am
Hi, i am looking for a new DMM for the bench, i do like the Siglent SDM3055, old guy's love the big screen, and a nice price :-DD, i did see it on the site here:
http://www.siglent.com/ENs/prodcut-db.aspx?id=176&tid=37&T=-1 (http://www.siglent.com/ENs/prodcut-db.aspx?id=176&tid=37&T=-1)
that there was a new model, the big bumpers from the X versions are now on it, also I've seen it on a video here:
Are there more changes, maybe in the hardware, or is it only new looks, but in the inside the same (old) hardware.
Welcome to the forum.

For your part of the world Siglent in Hamburg have a more local to you website:
https://www.siglenteu.com/digital-multimeters/ (https://www.siglenteu.com/digital-multimeters/)

Thanks for sharing the vid....shame the reviewer didn't have another set of Kelvin clips for a better 'apples vs apples' comparison.
I'm not aware of any changes to the HW other than 'X' model bumpers.
Title: Re: Siglent NEW Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: flash2b on March 19, 2018, 06:19:03 pm
The SDM3055 without the X but with the X look (like SDM3045X and SDM3065X)
(https://www.circuitsonline.net/forum/file/30557)
Title: Re: Siglent NEW Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: tautech on March 19, 2018, 07:54:19 pm
The SDM3055 without the X but with the X look (like SDM3045X and SDM3065X)
[img]https://www.circuitsonline.net/forum/file/30557[/
Yep. I guess it's confusing one way or the other. To X or not to X.  :-//
Title: Re: Siglent NEW Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: RF_Energy on March 19, 2018, 11:56:31 pm
Hi, i am looking for a new DMM for the bench, i do like the Siglent SDM3055, old guy's love the big screen, and a nice price :-DD, i did see it on the site here:
http://www.siglent.com/ENs/prodcut-db.aspx?id=176&tid=37&T=-1 (http://www.siglent.com/ENs/prodcut-db.aspx?id=176&tid=37&T=-1)
that there was a new model, the big bumpers from the X versions are now on it, also I've seen it on a video here:
Are there more changes, maybe in the hardware, or is it only new looks, but in the inside the same (old) hardware.
Welcome to the forum.

For your part of the world Siglent in Hamburg have a more local to you website:
https://www.siglenteu.com/digital-multimeters/ (https://www.siglenteu.com/digital-multimeters/)

Thanks for sharing the vid....shame the reviewer didn't have another set of Kelvin clips for a better 'apples vs apples' comparison.
I'm not aware of any changes to the HW other than 'X' model bumpers.

Thx,
there they have the old pictures on that site, i did ask the local shop (eleshop) here in the Netherlands, if they have the new model, and they did not now, so they send me a picture of what they have there, and it was the new model, the 3055 (X version).
i am still thinking about the 3045X or do i buy the new 3055, its only 100 euro price difference, and the 3055 has the extra filter for the dc what you can turn on and off, and 1 digit more on the screen, only the accuracy i do not understand, the 3055 is 0,015%, and the 3045X is 0,01%.
wy is the 3045X better, and its just a 4,5 digit meter 60 K counts, and the 3055 is 5,5 digit meter and 240 k counts i belief, wy only 0,015% accuracy.
i like to order next week, help me please to decide which meter is the best for me, i do not have the money to buy twice, i also was thinking about the Rigol DM3058E but the screen is not so nice to see, and it has no lan, i am not blind, but i like to have a easy to read screen, yes, old guy, i need glasses to see the Rigol meter  8).
i realy do not need the accuracy of a 5,5 digit meter, but its nice to have i think for 100 euro more, maybe later you need to have it for a project, but when the meter is less accurate, then you have nothing on that 1 digit more.
sorry my bad english, but i do my best to learn it, and i did not have the time to look things up, and paint it  :-DD
Title: Re: Siglent NEW Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: tautech on March 20, 2018, 01:26:34 am
RF_Energy
All models have had the X bumpers for a while now, any that don't will be very old stock.

You are best to make the decision yourself but I will add I have sold 5:1 in favor of SDM3055.
I also know it will hold its value better and be more sought after.

WRT accuracy, I have not tested one against the other (no suitable reference) but I would have expected the 3055 to be better now than early units and maybe the datasheet just reflects early 3055 model spec ?
Good luck.
Title: Re: Siglent NEW Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: Performa01 on March 20, 2018, 10:22:24 am
We need to distinguish resolution from accuracy. There are many tasks that don’t require absolute accuracy, but high resolution with good short term stability.

Then the specifications of SDM3045 and 3055 are not directly comparable, because the offset error is specified differently. Also the ranges are different and the SDM3055 has only four times the resolution of a SDM3045. For certain voltages the SDM3045 might be actually better suited than the 3055.

It should also be noted that the SDM3045 has 0.02% error for voltages higher than 6V whereas the SDM3055 has a constant error of 0.015% up to 1000V and accuracy is also specified for the temperature range outside the 23°C +/-5°C window. These facts alone hint on a higher class meter.

What really counts in the end is the total error of the measured value – and the available resolution. The comparison looks like this:

                SDM3045                  SDM3055
Voltage     Error     Resolution     Error     Resolution
2V            0,035% 100uV          0,018% 10uV
5V            0,020% 100uV          0,031% 100uV
10V          0,060% 1mV             0,023% 100uV
Title: Re: Siglent NEW Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: RF_Energy on March 20, 2018, 09:08:50 pm
yea, oke i see, thx to you all, for the fast and good reply's, i know now i have to buy the siglent sdm-3055, i hope that it wil serve me many years to com.

Title: Re: Siglent NEW Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: TERRA Operative on April 27, 2018, 02:08:22 am
I'm starting to look around for a bench top DMM, and have my eye on an SDM3065X, but the problem I have is I live in Japan...

Looks like it's the usual story of being stuck with barely any selection of only lower spec units (It's a bit more of a common problem than I would like... Japan likes to stick itself in the past, not to progressive in many ways.)

http://www.siglent.jp/html/modules/pico/index.php?content_id=39 (http://www.siglent.jp/html/modules/pico/index.php?content_id=39)


Is there any way to get an SDM3065X in Japan?
Title: Re: Siglent NEW Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: tautech on April 27, 2018, 02:30:42 am
I'm starting to look around for a bench top DMM, and have my eye on an SDM3065X, but the problem I have is I live in Japan...

Looks like it's the usual story of being stuck with barely any selection of only lower spec units (It's a bit more of a common problem than I would like... Japan likes to stick itself in the past, not to progressive in many ways.)

http://www.siglent.jp/html/modules/pico/index.php?content_id=39 (http://www.siglent.jp/html/modules/pico/index.php?content_id=39)


Is there any way to get an SDM3065X in Japan?
In the first instance I would contact the sales team at the factory on Shenzhen.
http://www.siglent.com/ENs/lxwms.aspx?id=1337 (http://www.siglent.com/ENs/lxwms.aspx?id=1337)
They can see if their distributor has stock and get them to contact you directly. This should only take a few hours.

I know factory staff travel to Japan for exhibitions and after sales support so your location should be no problem to get Siglent products.

PS. I'll email my contact and maybe you'll get a PM from him.
Title: Re: Siglent NEW Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: Chipguy on May 26, 2018, 08:44:58 pm
Please take the cover off and post a few internal photos  :-+

I have a SDM3065X in the lab, I think it will be my next teardown.
One year later. Dave did not find the time to do a teardown. No one else has done a teardown yet. I am sad. I was so excited about this announcement.
Anyway....
Title: Re: Siglent NEW Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: tautech on May 27, 2018, 03:09:02 am
Please take the cover off and post a few internal photos  :-+

I have a SDM3065X in the lab, I think it will be my next teardown.
One year later. Dave did not find the time to do a teardown. No one else has done a teardown yet. I am sad. I was so excited about this announcement.
Anyway....
If you're looking for pics of the insides see post #337
https://www.eevblog.com/forum/testgear/siglent-new-bench-dmm-sdm3055/msg1329966/#msg1329966 (https://www.eevblog.com/forum/testgear/siglent-new-bench-dmm-sdm3055/msg1329966/#msg1329966)

The internal layout is very similar to the 3055 and 3045X but the 3065X has a bigger footprint so the 3065X mainboard is a little larger and the vacant mounting hole near the main IC is just one of the mounting points used for the HW that carries the optional 16ch SC1016 logging card. In units with these factory fitted cards there is a custom frame that carries the logging card and some additional wiring and sockets for it to plug into.
Hope that helps.
Title: Re: Siglent Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: flash2b on July 05, 2018, 10:47:12 am
I own a Siglent SDM3055 with V1.01.01.19 firmware.

The SDM3055 has an option to select Speed with Fast, Medium and Slow as option.

The new SDM3045X and SDM3065X have also a similar option which is renamed to Apperture with option using PLC (power line cycles), which is much more usefull.

Now my question, does anyone know how many the number of PLCs for Fast, Medium and Slow ?

Also, using EasyDMM the SDM3055 is able to log into a file, but there are always (no matter what you do) 5 readings per second in the log file. There is not way to control the measurement interval. Is there anyway to control the measurement interval either with EasyDMM or using Acquire from the instrument?
Title: Re: Siglent Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: tautech on July 06, 2018, 08:37:29 am
I own a Siglent SDM3055 with V1.01.01.19 firmware.

The SDM3055 has an option to select Speed with Fast, Medium and Slow as option.

The new SDM3045X and SDM3065X have also a similar option which is renamed to Apperture with option using PLC (power line cycles), which is much more usefull.

Now my question, does anyone know how many the number of PLCs for Fast, Medium and Slow ?

Also, using EasyDMM the SDM3055 is able to log into a file, but there are always (no matter what you do) 5 readings per second in the log file. There is not way to control the measurement interval. Is there anyway to control the measurement interval either with EasyDMM or using Acquire from the instrument?
Great question !
I've tried my SDM3065X and indeed the measurement speed options are far better....from 100 PLC, 10, 1, 0.5, 0.05, to 0.005.

I'll shoot Siglent an email to see if there's plans to bring the reading speed to the same format in all SDM30** models and seek an answer to your other logging question.
Title: Re: Siglent Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: flash2b on July 06, 2018, 10:35:31 am
So the 3065X has 6 settings, curious if the 3045X also has 6.

A mapping of Slow --> xx PLC's, Medium --> yy PLC's and fast --> zz PLC's would already be helpfull.

Hoping for some clarification soon.
Title: Re: Siglent Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: tautech on July 06, 2018, 10:44:36 am
So the 3065X has 6 settings, curious if the 3045X also has 6.

A mapping of Slow --> xx PLC's, Medium --> yy PLC's and fast --> zz PLC's would already be helpfull.

Hoping for some clarification soon.
100 PLC is slowest, I tried to time it with a stopwatch and got a reading of ~3s/reading.
Doesn't really make sense, our NZ mains is 50 Hz so it should be ~2s/reading but it could be system to display latency in measurements, don't know.
Anyways, at the faster settings there's only so fast the display can keep up with so the fastest settings don't show crazy fast display refresh rates once you get past 1PLC settings.
Probably should try some USB stick CSV saves to see the difference......but not tonight.
No reply from Siglent as yet.
Title: Re: Siglent Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: BillB on July 06, 2018, 11:16:16 am
So the 3065X has 6 settings, curious if the 3045X also has 6.

A mapping of Slow --> xx PLC's, Medium --> yy PLC's and fast --> zz PLC's would already be helpfull.

Hoping for some clarification soon.

No.  My 3045X only has the three speed options.  It has the latest firmware.
Title: Re: Siglent Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: flash2b on July 06, 2018, 11:58:52 am
Logging with EasyDMM has always 5 samples per second (regardless Speed) so that equals to 10 PLC (NL mains is 50Hz)

BillB, what values of PLC has your 3045X ? (generally more digit meters have more PLC settings)
Title: Re: Siglent Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: BillB on July 06, 2018, 12:34:00 pm
Logging with EasyDMM has always 5 samples per second (regardless Speed) so that equals to 10 PLC (NL mains is 50Hz)

BillB, what values of PLC has your 3045X ? (generally more digit meters have more PLC settings)

From the 3045X user's guide:

Quote
1. Three  reading  rates  are  available  for  DCV,  ACV,  DCI,  ACI and  2-Wire/4-Wire Resistance: “Slow”, “Middle” and “Fast”.
2. There is a linkage for both reading resolution and reading (measurement) rate.
3. 5 reading/s and 50 reading/s belongs to 4.5 digit resolution.
4. 150 reading/s belong to 3.5 digit resolution.
5. The  reading  resolution  of Temperature is  fixed  at 4.5  digit  and “Fast” respectively.
6. The  reading  resolutions  and  measurement  rates  of  both  Diode  and Continuity are fixed at 4.5 digit and “Fast” respectively.
7. The  reading  resolution  and  measurement  rate  of  the  Frequency function are fixed 4.5 digit and “Slow” respectively.
8. The reading resolution and measurement rate of the Capacitance function are fixed at 3.5 digit and “Slow” respectively.
Title: Re: Siglent Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: arekm on July 09, 2018, 04:33:47 pm
Who offers best price for SDM3065X in EU these days?
Title: Re: Siglent Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: nihtila on September 27, 2018, 12:29:18 pm
Is there anything better in the newer SDM3045X than in the SDM3055? The price difference here seem to be £60. Any new features?

I have not spotted anything significant when trying to compare, it's just not always so clear which one is better or worse; think of high square-wave output of the new 'lower end' Siglent AWGs, for example. So I am basically after a DMM and AWG, and possibly SA/VNA as well when I can afford.
Title: Re: Siglent Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: BillB on September 27, 2018, 02:22:12 pm
I don't think there is anything better with the 3045X over the 3055, other than maybe it doesn't have a fan so it is quiet.  Other than the resolution, accuracy, ranges and the few differences already discussed I don't see any differences in features.  I don't remember seeing any feature the 3045X has that the 3055 does not.   
Title: Re: Siglent Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: nihtila on September 27, 2018, 02:34:36 pm
That's what I thought. So the sweet spot here seems to be the 3055.
Title: Re: Siglent Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: BillB on September 27, 2018, 04:02:09 pm
That's what I thought. So the sweet spot here seems to be the 3055.

Definitely.  For the price difference, I think it's worth it to step up to the 3055.
Title: Re: Siglent Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: joeyjoejoe on October 25, 2018, 12:47:30 am
Is the SDM3055 discontinued? I'm starting to see it disappear? OOS on Amazon (damn, was a good price)

https://www.tequipment.net/Siglent/SDM3055/Benchtop-Multimeter/ (https://www.tequipment.net/Siglent/SDM3055/Benchtop-Multimeter/)
These items are discontinued from the TEquipment catalog and are no longer stocked at TEquipment.
Title: Re: Siglent Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: tautech on October 25, 2018, 01:05:54 am
Is the SDM3055 discontinued? I'm starting to see it disappear? OOS on Amazon (damn, was a good price)
No, it's still a current model.
https://www.siglentamerica.com/digital-multimeters/sdm3055-5-%C2%BD-digits-dual-display-digital-multimeters/ (https://www.siglentamerica.com/digital-multimeters/sdm3055-5-%C2%BD-digits-dual-display-digital-multimeters/)

There is sometimes confusion as it's not advertised as an X model as their release predates the X ranges of Siglent equipment. However the X model rubber bumpers are now fitted on SDM3055 so they look the same as an X model.

Quote
https://www.tequipment.net/Siglent/SDM3055/Benchtop-Multimeter/ (https://www.tequipment.net/Siglent/SDM3055/Benchtop-Multimeter/)
These items are discontinued from the TEquipment catalog and are no longer stocked at TEquipment.
Correct, TQ are no longer Siglent agents and haven't been for some time.

Saelig now offer similar discounts and have a thread where you can ask for the EEVblog member discount code.
Otherwise your closest NA dealer can be found here:
https://www.siglentamerica.com/how-to-buy/ (https://www.siglentamerica.com/how-to-buy/)
Title: Re: Siglent Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: ahope on November 10, 2018, 09:19:13 pm
Hi,
Tautech asked me to post some pictures of the 3045X internals.

So here goes:
Title: Re: Siglent Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: aheid on November 20, 2018, 12:36:20 am
That's what I thought. So the sweet spot here seems to be the 3055.

Definitely.  For the price difference, I think it's worth it to step up to the 3055.

I'm looking to get my first bench DMM, and the Siglent ones look very tempting. However I'm also quite baffled by the pricing of the 3045X vs 3055. My main usage would be <20V, so as far as I can understand I'd get a lot more bang for just a few more bucks with the 3055.
Title: Re: Siglent Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: daveyk on November 20, 2018, 05:48:46 am
“Saelig now offer similar discounts and have a thread where you can ask for the EEVblog member discount code.”

Crap, I just a Siglent Function Generator and a Siglent 200Mhz Four Channel scope from them, through Amazon. I didn’t know to ask for an EEVBlog Forum discount 8-(
Title: Re: Siglent Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: tautech on March 29, 2019, 10:58:38 pm
New firmware for SDM3065X models.

3.01.01.06R2
8.3 MB
https://www.siglentamerica.com/download/8445/ (https://www.siglentamerica.com/download/8445/)

Changelog
1. Add DHCP function to IP addressing
2. Add Open Socket at LAN port 5025
3. Add over current protect function in a special case
4. Fix a crash fault when restoring settings
5. Modify the calibration arithmetic in 2-wire resistance measurement 10 MOhm range
6. Add “ABORT BULK IN” ,”INITIATE CLEAR” features to remote SCPI commands
Title: Re: Siglent Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: th_sak on April 16, 2019, 06:54:58 pm
Hello everybody,

I would like to share my bad experience with the SDM3065x DMM which I got today.

It is a brand new, out of the box unit and guess what...It doesn't turn on!

Actually what it does is that it loads the boot screen with the fancy Siglent logo and stays there for ever.

I have prepared a video showing the problem and I will send it to my distributor's help center first thing tomorrow morning, asking for immediate replacement.

By the way did anyone else have the same problem?

For those interested to see the video I have a low res version in this (http://www.dropbox.com/s/dxnxbs6u8wtxzr1/SDM3065x_Boot_Problem.mp4?dl=0) dropbox link.
Title: Re: Siglent Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: tautech on April 16, 2019, 07:23:28 pm
Hello everybody,

I would like to share my bad experience with the SDM3065x DMM which I got today.

It is a brand new, out of the box unit and guess what...It doesn't turn on!

Actually what it does is that it loads the boot screen with the fancy Siglent logo and stays there for ever.

I have prepared a video showing the problem and I will send it to my distributor's help center first thing tomorrow morning, asking for immediate replacement.

By the way did anyone else have the same problem?

For those interested to see the video I have a low res version in this (http://www.dropbox.com/s/dxnxbs6u8wtxzr1/SDM3065x_Boot_Problem.mp4?dl=0) dropbox link.
Welcome to the forum.

Oh dear that is not a good first experience.  :-//
By PM I send a link for the USB recovery package.
Unpack the ZIP file and carefully follow instructions.

Please report outcome.

Edit to add:
When recovered be sure to update the firmware to the latest version:
https://www.siglenteu.com/service-and-support/firmware-software/digital-multimeters/#sdm3065x-series (https://www.siglenteu.com/service-and-support/firmware-software/digital-multimeters/#sdm3065x-series)
Title: Re: Siglent Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: th_sak on April 16, 2019, 07:58:18 pm
tautech thank you very much for your help and for your fast response.

It works!!!

I was aware of the new version so I have already done this update to the latest FW.
Title: Re: Siglent Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: tautech on April 16, 2019, 08:12:16 pm
tautech thank you very much for your help and for your fast response.

It works!!!

I was aware of the new version so I have already done this update to the latest FW.
Great !  :clap:

I think it should give no further issues. Enjoy.  :)
Title: Re: Siglent Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: jemangedeslolos on April 16, 2019, 08:17:06 pm
Hello,
I have a SDM3055 and Im very happy with it.
I bought it before Siglent release the SDM3065X.
I also have a SDG2082X.....It is so stupid but I have on the SDM3055 the old model bumpers.
Is it possible to buy and change the old bumpers by the ones from the model X ?

It will look nicer on my bench  8)

I will buy in the next few weeks a SVA1015X from Batronix, maybe with the help of Siglent, il will be possible to add those bumpers in the package ?

I also have a SDS2204X so I am unintentionally a siglent guy  ;D
Title: Re: Siglent Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: tautech on April 16, 2019, 09:48:38 pm
Hello,
I have a SDM3055 and Im very happy with it.
I bought it before Siglent release the SDM3065X.
I also have a SDG2082X.....It is so stupid but I have on the SDM3055 the old model bumpers.
Is it possible to buy and change the old bumpers by the ones from the model X ?
Yes early SDS3055 did not have the X model bumpers but they all have them now.  :)
Siglent have not changed the SDM3055 model name to 3055X to avoid confusion.

You will need to have your supplier order the X model bumpers for you.
They should not be very expensive .......a replacement tilting bail handle I got that fits all SDM and SDG models was only a few $.
Title: Re: Siglent Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: jemangedeslolos on April 17, 2019, 10:17:34 am
Thank you for your answer, I will ask them :)
Title: Re: Siglent Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: Performa01 on April 24, 2019, 08:25:55 am
Hello,
I have a SDM3055 and Im very happy with it.
I bought it before Siglent release the SDM3065X.
I also have a SDG2082X.....It is so stupid but I have on the SDM3055 the old model bumpers.
Is it possible to buy and change the old bumpers by the ones from the model X ?

It will look nicer on my bench  8)

I will buy in the next few weeks a SVA1015X from Batronix, maybe with the help of Siglent, il will be possible to add those bumpers in the package ?

I also have a SDS2204X so I am unintentionally a siglent guy  ;D
I have been in contact with Siglent Europe about your request and think the answer might be of public interest:

According to the information from the Siglent factory in Shenzhen, the new X-series bumpers do not fit the old SDM3055 models.

Siglent Europe would have been glad to help you with this, but unfortuantely it won't work.
Title: Re: Siglent Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: eplpwr on April 24, 2019, 11:55:32 pm
I have an SDM3065X. And an SDG2042.

If Siglent were a normal company they would have rack mounting hardware such that my meters could be mounted side-by-side, using a total of 2U. Not so, SDG-RMK is not of this world, it's the freak show of rackmounting kits. What is it whith chinese design, or rather the lack of it? Like the new Rigol SG:s, or ... SDG-RMK.

Also, calibration documentation for SDM3065X will be finished by June ... 2035.
Title: Re: Siglent Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: tautech on May 14, 2019, 07:15:19 pm
SDM3065X Service manuals are available from the Siglent websites now.

For adjustment of these models please study the appropriate section carefully for the equipment and software requirements.
The equipment listed as required is:
Calibrator: FLUKE 5522A
High precision digital multimeter:HP3458A
Computer: Windows system

Software
Python
Microsoft Office 2007 or higher
NI-VISA
Title: Re: Siglent Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: Electro Fan on June 02, 2019, 10:37:54 am
tautech thank you very much for your help and for your fast response.

It works!!!

I was aware of the new version so I have already done this update to the latest FW.

I’m late to this thread - just happened to be reading up on graphing DMMs....

Wow - Impressive recovery capability in the Siglent design and very impressive support by tautech!
Title: Re: Siglent Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: tautech on June 04, 2019, 08:06:51 am
I have an SDM3065X. And an SDG2042.

If Siglent were a normal company they would have rack mounting hardware such that my meters could be mounted side-by-side, using a total of 2U. Not so, SDG-RMK is not of this world, it's the freak show of rackmounting kits. What is it whith chinese design, or rather the lack of it? Like the new Rigol SG:s, or ... SDG-RMK.
I asked about dual rack mounts a few weeks back and forgot to post about them.......they're coming !
Dunno any time frames but suggest you keep a watch on Siglent websites for them.
Title: Re: Siglent Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: cvanc on June 18, 2019, 04:01:59 pm
Some questions about SDM3045X statistics, specifically the min/max function and memory depth.

See photo; I am doing long term (several days) monitoring of a DC voltage.  When the photo was taken I was at over one million samples and everything seemed to be working fine (ignore the ghosting in the displayed value - it's just normal flicker versus camera exposure time).

Questions:
1- What is the sample rate?  It is clearly several times per second but I can't find an actual specification in the documentation.
2- What is the maximum number of samples possible before I run out of memory?  Again, can't find this in the specs.
3- What happens when I run out of memory?  Does it flush the stored data and start over, or just stop running, or what?

Thanks for any insight you can provide.
Title: Re: Siglent Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: BillB on June 18, 2019, 05:21:26 pm
1 - The sample rate is set by the Speed softkey (2nd softkey after pressing DCV button).  For the 3045X three  reading  rates  are  available  for  DCV,  ACV,  DCI,  ACI and  -Wire/4-Wire Resistance: “Slow”, “Middle” and “Fast”:

There is a linkage for both reading resolution and reading (measurement) rate.
5 reading/s and 50 reading/s belongs to 4.5 digit resolution.
150 reading/s belong to 3.5 digit resolution.
The  reading  resolution  of Temperature is  fixed  at 4.5  digit  and “Fast” respectively.
The  reading  resolutions  and  measurement  rates  of  both  Diode  and Continuity are fixed at 4.5 digit and “Fast” respectively.
The  reading  resolution  and  measurement  rate  of  the  Frequency function are fixed 4.5 digit and “Slow” respectively.
The reading resolution and measurement rate of the Capacitance function are fixed at 3.5 digit and “Slow” respectively.

2 - According to the manual, the sample field for triggering has a limit of 599999999.  So that's my guess for max samples.
3 - Don't know what happens when it reaches the limit; it probably starts at 0.
Title: Re: Siglent Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: exe on June 18, 2019, 05:26:26 pm
What's the difference between the DMMs on a schematic level? Like, do they use different references, ADC, etc?

Is there any measurements of noise (not acoustic noise, but measurement noise) and stability?
Title: Re: Siglent Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: tautech on June 18, 2019, 07:08:45 pm
What's the difference between the DMMs on a schematic level? Like, do they use different references, ADC, etc?
SDM3045X and 3055 are very similar and the jury is still out as to they might be the same excepting displayed digits.
However they each use different firmware which might indicate there are internal differences.
There's PCB pics of each model earlier in this thread.
SDM3065X is different and uses the LM399 Vref.
Quote
Is there any measurements of noise (not acoustic noise, but measurement noise) and stability?
Compare the datasheets.  ;)
Title: Re: Siglent Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: exe on June 19, 2019, 10:47:48 am
Compare the datasheets.  ;)

Datasheets don't tell the whole story ;).

Nice units, too bad SDM3065X costs too close to DMM6500 :(. Although, the latter is too big to fit my bench... Dilemma.
Title: Re: Siglent Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: BillB on June 19, 2019, 11:11:06 am
Nice units, too bad SDM3065X costs too close to DMM6500 :(. Although, the latter is too big to fit my bench... Dilemma.

Here in the US its $729 vs $1095, that's 50% more expensive. 
Title: Re: Siglent Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: exe on June 19, 2019, 11:32:11 am
Here in the US its $729 vs $1095, that's 50% more expensive. 

In EU it's like 820euro  vs ~1030, which is ~27%. Significant difference, but not that important to me. I also trust Tek a little bit more, they even specify 2year cal specs.
Title: Re: Siglent Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: Calvin on June 20, 2019, 06:43:43 am
Hi,

Welectron offers them at this moment for 688,24€ and 806,72€ exVAT, only a 17% up.

regards
Calvin
Title: Re: Siglent Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: markus_jlrb on June 25, 2019, 10:43:02 am
Dear EEVBlogger,

someone there who could explain to me the difference
in HW version 02-02-00-05-00 vers 01-01-00-02-00 of the
SDM3065X device.

Is there a drawback baying a 01-01-00-02-00 device
instead of the 02-02-00-05-00 version, concerning
precision, stability or lifetime of such a device?

My second question concerning the SDM3065X is,
if there is a possibility to scale a voltage measured
via a current shunt in order to match the display.
Many shunts offered will have a 75mV full range
voltage at the terminals.
100mV shunts are difficult to find and they are
more expensive.
perhaps this could be done by the math menu?

Many thanks in advance for your anwser and clarification.

Markus


Title: Re: Siglent Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: tautech on July 06, 2019, 01:34:36 am
I have an SDM3065X. And an SDG2042.

If Siglent were a normal company they would have rack mounting hardware such that my meters could be mounted side-by-side, using a total of 2U. Not so, SDG-RMK is not of this world, it's the freak show of rackmounting kits. What is it whith chinese design, or rather the lack of it? Like the new Rigol SG:s, or ... SDG-RMK.
I asked about dual rack mounts a few weeks back and forgot to post about them.......they're coming !
Dunno any time frames but suggest you keep a watch on Siglent websites for them.
The new dual rack mount is listed as # SDG-2-RMK on P85 of the latest catalog:
Rackmount kit for two instruments , compatible with the SDG800, SDG1000, SDG1000X,SDG2000X, SDG5000 and SDG6000X series function generator and SDM3045X, SDM3055, SDM3065X digital multimeters
https://www.siglentamerica.com/download/8263/ (https://www.siglentamerica.com/download/8263/)
Title: Re: Siglent Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: doddemail on July 15, 2019, 04:24:46 pm
Hi All,

My SDM3045X compared to my SDM3055 and Fluke 187 has only on the DC range and mostly on the 6 volt range an diviation of 5.4 milivolt  :wtf:
now i want to correct this so i am looking for these files from Siglent

According to the SDM3045XService  Manual i need these python scripts

The python scripts include 8items as the following:
DCV_Cal: Calibrate DCV function
ACV_Cal: Calibrate ACV function
DCI_Cal: Calibrate DCI function
ACI_Cal: Calibrate ACI function
R2W_Cal: Calibrate 2 wire resistance function
R4W_Cal: Calibrate 4 wire resistance function
CAP_Cal: Calibrate Capacitance function
TEMP_Cal: Calibrate Temperature function

i have access to a calibrated Fluke 5522A so this must be appeltje eitje  :-+

thanks in regards

Mischa
Title: Re: Siglent Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: tautech on July 15, 2019, 10:49:16 pm
@ doddemail
Welcome to the forum.

Before you consider calibration adjustments please check measurements again with concern over possible EMI/RFI and your DC source is accurate and clean without ripple or other interference.
The latest Service manual and datasheet with accuracy specs can be downloaded here:
https://www.siglenteu.com/resources/documents/digital-multimeter/#sdm3045x-series (https://www.siglenteu.com/resources/documents/digital-multimeter/#sdm3045x-series)

You will need all the specified equipment to attempt calibration (HW and SW) and the Hamburg office should be able to provide you with Cal scripts on request.
https://www.siglenteu.com/contact-us/ (https://www.siglenteu.com/contact-us/)

I would provide them with evidence of the measurement errors to enforce your need for the Cal scripts.
Please report the outcome.
Title: Re: Siglent Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: n3mmr on July 16, 2019, 11:28:34 am
I take it there are no useful hacks to be performed on a sdm3045x?

What other use could there be for having free root access to the OS of such a device?

Title: Re: Siglent Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: tautech on July 17, 2019, 07:53:51 am
I take it there are no useful hacks to be performed on a sdm3045x?
None that anybody's been willing to try.....but sure it's been considered here before now.

Quote
What other use could there be for having free root access to the OS of such a device?
SCPI commands, see Reply #336
Title: Re: Siglent Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: n3mmr on July 17, 2019, 02:46:37 pm
Does SCPI via telnet to port 5024 require root access to the OS? REALLY??
Title: Re: Siglent Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: BillB on July 17, 2019, 05:25:18 pm
Does SCPI via telnet to port 5024 require root access to the OS? REALLY??

No.  Not for normal SCPI use. 
Title: Re: Siglent Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: tv84 on July 17, 2019, 06:44:53 pm
Does SCPI via telnet to port 5024 require root access to the OS? REALLY??

There is no OS in these equipments so you can't access the OS! It's only a single "application" running.   :palm:
Title: Re: Siglent Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: n3mmr on July 18, 2019, 06:23:56 am
Does SCPI via telnet to port 5024 require root access to the OS? REALLY??

There is no OS in these equipments so you can't access the OS! It's only a single "application" running.

I wrote my question after seeing your post, tv84, about a set of ads files containing a script giving password free root access telnet to port 1101.
And that set included one for the sdm3045x.
Title: Re: Siglent Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: tv84 on July 18, 2019, 10:28:31 am
Does SCPI via telnet to port 5024 require root access to the OS? REALLY??

There is no OS in these equipments so you can't access the OS! It's only a single "application" running.

I wrote my question after seeing your post, tv84, about a set of ads files containing a script giving password free root access telnet to port 1101.
And that set included one for the sdm3045x.

n3mmr,

Please accept my apologies!! I should have stayed silent...  |O |O |O   (getting old...   :palm: )

Of course they have an OS. You can easily see that in the parsings:

https://www.eevblog.com/forum/testgear/siglent-ads-firmware-file-format/msg1335892/#msg1335892 (https://www.eevblog.com/forum/testgear/siglent-ads-firmware-file-format/msg1335892/#msg1335892)

You have scripts for the 3 models:

https://www.eevblog.com/forum/testgear/siglent-ads-firmware-file-format/msg1870091/#msg1870091 (https://www.eevblog.com/forum/testgear/siglent-ads-firmware-file-format/msg1870091/#msg1870091)
Title: Re: Siglent Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: n3mmr on July 18, 2019, 11:45:22 am
Does SCPI via telnet to port 5024 require root access to the OS? REALLY??

There is no OS in these equipments so you can't access the OS! It's only a single "application" running.

I wrote my question after seeing your post, tv84, about a set of ads files containing a script giving password free root access telnet to port 1101.
And that set included one for the sdm3045x.

n3mmr,

Please accept my apologies!! I should have stayed silent...  |O |O |O   (getting old...   :palm: )

Of course they have an OS. You can easily see that in the parsings:

https://www.eevblog.com/forum/testgear/siglent-ads-firmware-file-format/msg1335892/#msg1335892 (https://www.eevblog.com/forum/testgear/siglent-ads-firmware-file-format/msg1335892/#msg1335892)

You have scripts for the 3 models:

https://www.eevblog.com/forum/testgear/siglent-ads-firmware-file-format/msg1870091/#msg1870091 (https://www.eevblog.com/forum/testgear/siglent-ads-firmware-file-format/msg1870091/#msg1870091)

Don't fret! I've done worse!

Question remains, though, are there any useful changes or hacks that can be inflicted on a 3045x thru that telnet access?
Title: Re: Siglent Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: BillB on July 18, 2019, 12:39:45 pm
Question remains, though, are there any useful changes or hacks that can be inflicted on a 3045x thru that telnet access?

The 3045X has about 99% of the features of the 3055.  I think there have been images posted of the internals of both units, but I don't know if there has been any conclusion about physical differences.  I know the 3055 has a fan and the 3045X doesn't.  I haven't delved too far into the configuration files, but short of exceeding the safe limits put in place ranges, I don't know that there is anything useful that can be done to improve the 3045X.
Title: Re: Siglent Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: tautech on August 12, 2019, 08:22:34 am
Deeper investigations:
https://www.eevblog.com/forum/testgear/hacking-the-siglent-sdm3055/ (https://www.eevblog.com/forum/testgear/hacking-the-siglent-sdm3055/)
Title: Re: Siglent Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: ahope on November 10, 2019, 03:22:19 pm
Hi,
Just got my labview home bundle and discovered that the siglent labview driver that you can download from siglentna.com is too new. The Labview Home is based on Labview 2014.

Anyone got labview 2014 drivers for the 3045X?
Title: Re: Siglent NEW Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: skander36 on November 16, 2019, 05:23:53 pm
Thanks for this clarification. Hopefully I have Appa 109N, which being portable is capable of such a function.
I'd like to ask another question - regarding temperature measuring. I've noticed that K-type probe, which works Ok with my Appa 109N DMM is showing approx. +4 celcium degrees on SDM3055. I have found no way to calibrate it or do anything with this situation. Is there some procedure for changing ITS90 tables inside the device, or calibrating the probe?

I don't know of any user-adjustable way to change the Temperature calibration on the SDM3065X.

I noticed the accuracy of the Appa 109N is listed as 0.1% + 3 deg C.
The SDM3065X accuracy for a K thermocouple is 0.5 dec C after a 90 minute warm-up. It also has built in cold-junction compensation.

Hi,
I have the same problem with SDM3065X . All K-Type probes I tested, show variations +/- 5 degree C .
How can I use temp. measurement function on this instrument ?
There are a specific  probe that can be used ?
There are methods to calibrate temp range ?

Thank you !
Title: Re: Siglent Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: Kleinstein on November 16, 2019, 06:24:58 pm
Thermocouple measurements are tricky with just the 4 mm input jacks. Just the wrong connectors could cause trouble and cold junction compensation is also tricky, as the effective cold junction may be outside the meter.  Things may get better with a scanner card.
Title: Re: Siglent Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: skander36 on November 19, 2019, 06:13:44 pm
In fact I realize that I cannot use REL function , because my meter display 33 degrees without probe . So if I press REL it will display a negative value after I connect the probe , because it will compensate the initial value.
It is normal to show 33 degree (on K type) without probe ?
Any one that can verify with this multimeter (SDM 3065X) ?

Thank you !
Title: Re: Siglent Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: Kleinstein on November 19, 2019, 07:57:29 pm
With open inputs the thermocouple reads can be all over the place, just like with high impedance voltage reading.

With a short instead of the thermocouple (this may also apply if 10 M impedance mode is used) there would be zero voltage and thus reading of the cold junction temperature. 33 C is quite warm, but possible with quite some heat from the instrument and if the measured temperature is more to the inside. There may be more detailed instructions on how to connect a thermocouple - the transitions from TC to copper should be near the measured temperature. This may require special connectors to get this right.
Title: Re: Siglent Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: skander36 on November 19, 2019, 08:45:09 pm
I cannot select 10 M on this function .
I am using  K type probes .
Why it is not working as supposed ?
A 10 dollar,  ordinary meter  from aliexpress show the temp correctly .
Do you have the same meter ?

Title: Re: Siglent Bench DMMs SDM3065X, SDM3055 and SDM3045X
Post by: Kleinstein on November 20, 2019, 03:37:38 pm
One thing to possibly go wring is having the thermo-couple wires reversed. I would first check with just just a short instead of the probe.

I don't see a special connector, so I would expect the TC function to be of marginal use. A little like cheap meters without an extra plug (that could interfere with a good CAT rating).