Siglent Bench DMMs SDM3065X, SDM3055 and SDM3045X - Page 1
Forum section: electronics / testgear

author: tautech
author_rank: Super Contributor
timestamp: September 19, 2014, 10:53:40 am
content: 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)The full family and specs:https://int.siglent.com/products/digital_multimeters/https://siglentna.com/digital-multimeters/SDM3065XReleased April 2017SDM3045XNew 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/FW & SW updates:https://int.siglent.com/download/firmwares/?CateIdss=5https://siglentna.com/service-and-support/firmware-software/digital-multimeters/Recently released option for 3055 and 3065 models in the SDM3*** family is a16 ch scanner cardbut it's only for factory installation unfortunately.6 1/2 Digit Benchtop DMM:SDM3065Xhttps://www.eevblog.com/forum/testgear/siglent-new-bench-dmm-sdm3055/msg1016306/#msg1016306http://siglentamerica.com/prodcut-detailxx.aspx?id=4826&tid=37&T=2Siglent video:https://youtu.be/pijpdKbq_O4Deeper investigations: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.POI List3DP Scanner card breakout from member pipe2nullhttps://www.eevblog.com/forum/testgear/siglent-new-bench-dmm-sdm3055/msg3070270/#msg3070270Retrofitting SC/Scanner card discussion:https://www.eevblog.com/forum/testgear/siglent-new-bench-dmm-sdm3055/msg5020645/#msg5020645Adding custom temp sensors:https://siglentna.com/operating-tip/adding-customer-defined-temperature-sensors-dmm-sdm3000/SDM3045X Ranging issues and why:https://www.eevblog.com/forum/testgear/siglent-sdm3045x-enough-is-enough/User CalLatest procedure:Previous......now outdated.Excellent webpage by Defpom for SDMUser CalCSV file creation:http://www.thedefpom.com/siglent_sdm_calibration.phpCarefully follow his instructions and use appropriate quality references to build your own SDM Cal files to compensate for accuracy drift as these bench meters internal references age.Video above also linked on his webpage for guidance on how User Cal works.SDM3045X PCB pics:https://www.eevblog.com/forum/testgear/siglent-new-bench-dmm-sdm3055/msg1955995/#msg1955995SDM3055 PCB pics:https://www.eevblog.com/forum/testgear/siglent-new-bench-dmm-sdm3055/msg637615/#msg637615SDM3065X PCB pics:https://www.eevblog.com/forum/testgear/siglent-new-bench-dmm-sdm3055/msg1329966/#msg1329966Auto power up mod:https://www.eevblog.com/forum/testgear/siglent-new-bench-dmm-sdm3055/msg3503976/#msg3503976Size comparison:https://www.eevblog.com/forum/testgear/siglent-new-bench-dmm-sdm3055/msg3929207/#msg3929207SDM3045X independent review:http://lygte-info.dk/review/DMMSiglent%20SDM3045X%20UK.htmlTypical recovery procedure:Not mentioned is the need to place the unzipped recovery package into the root of the USB stick and said FAT32 stick must be not larger than 8GB and with 4k clusters.

author: Orange
author_rank: Frequent Contributor
timestamp: September 19, 2014, 04:55:40 pm
content: 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.

author: Hydrawerk
author_rank: Super Contributor
timestamp: September 19, 2014, 06:01:29 pm
content: 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.

author: Wytnucls
author_rank: Super Contributor
timestamp: September 19, 2014, 08:08:01 pm
content: 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

author: tautech
author_rank: Super Contributor
timestamp: September 26, 2014, 07:47:32 pm
content: The datasheet is now available for download from Siglent:http://www.siglent.com/DataSheet/EN/SDM3055_DataSheet_EN.pdfhttp://www.siglentamerica.com/USA_website_2014/Documents/DataSheet/SDM3055x_DataSheet_DS06035-E02B.pdf

author: Wytnucls
author_rank: Super Contributor
timestamp: September 26, 2014, 09:06:17 pm
content: Thanks, filled in the blanks on the bench meter spreadsheet. To be published soon.

author: Siglent
author_rank: Regular Contributor
timestamp: September 30, 2014, 06:48:50 am
content: siglent new official website has been on-line, for more information, please visithttp://www.siglent.com/ENs/pdxx.aspx?id=176&T=2&tid=37

author: EEVblog
author_rank: Unknown
timestamp: September 30, 2014, 07:08:20 am
content: Quote from: tautech on September 26, 2014, 07:47:32 pmWow, looks like they completely ripped off the Agilent UI

author: nctnico
author_rank: Super Contributor
timestamp: September 30, 2014, 03:38:22 pm
content: Quote from: Siglent on September 30, 2014, 06:48:50 amThe website looks completely wrong with Firefox version 32.

author: smatjaz
author_rank: Newbie
timestamp: March 19, 2015, 07:36:43 pm
content: 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.

author: tautech
author_rank: Super Contributor
timestamp: March 19, 2015, 07:45:05 pm
content: Welcome to the forum.Better you place this post in this thread: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.

author: Siglent
author_rank: Regular Contributor
timestamp: March 20, 2015, 05:47:39 am
content: Quote from: smatjaz on March 19, 2015, 07:36:43 pmthis is a known problem, we have fixed in the coming firmware (11R2), but we will release it in about two weeks.

author: zaoka
author_rank: Frequent Contributor
timestamp: March 22, 2015, 05:31:04 am
content: Quote from: Siglent on March 20, 2015, 05:47:39 amIs there a way to increase Diode voltage limit to 3.0V instead of 2.0V?

author: zaoka
author_rank: Frequent Contributor
timestamp: March 22, 2015, 05:36:30 am
content: Also sampling time for DC, can you add 5 times per second as well?

author: Siglent
author_rank: Regular Contributor
timestamp: March 25, 2015, 09:24:52 am
content: Quote from: zaoka on March 22, 2015, 05:36:30 amThanks for your suggestion. but can you explain why you need to add this feature?

author: tautech
author_rank: Super Contributor
timestamp: March 26, 2015, 09:44:19 am
content: Quote from: EEVblog on September 30, 2014, 07:08:20 amBeen 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/#msg626032I thought I'd better take a deeper look just in case the Agilent was a rebrand.SDM3055Wow 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.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

author: DJ
author_rank: Unknown
timestamp: March 27, 2015, 08:07:30 pm
content: 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"

author: zaoka
author_rank: Frequent Contributor
timestamp: March 28, 2015, 02:19:02 am
content: Quote from: Siglent on March 25, 2015, 09:24:52 amWhen 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.

author: tautech
author_rank: Super Contributor
timestamp: March 28, 2015, 06:30:42 am
content: Quote from: zaoka on March 28, 2015, 02:19:02 amP 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.

author: Muttley Snickers
author_rank: Unknown
timestamp: March 30, 2015, 12:20:16 pm
content: Does anybody know what the available screen colours 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.

author: tautech
author_rank: Super Contributor
timestamp: March 30, 2015, 07:49:01 pm
content: Oh Muttley, sorry about the overalls, they will have to go.There is no other screen options available that I could find, the surrounds are Grey, display background Navy blue and numbers, bar graphs etc areYellow, 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 imagesThe 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=37The 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.

author: Muttley Snickers
author_rank: Unknown
timestamp: March 30, 2015, 11:47:08 pm
content: Bugger tautech,I dont want to look like a dummy....

author: tautech
author_rank: Super Contributor
timestamp: March 31, 2015, 01:17:14 am
content: 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. DCVThen 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.

author: Wmacky
author_rank: Regular Contributor
timestamp: March 31, 2015, 04:09:08 am
content: I wonder if this unit would be a big upgrade for someone using a Fluke 87V for bench work?

author: tautech
author_rank: Super Contributor
timestamp: March 31, 2015, 04:29:22 am
content: Quote from: Wmacky on March 31, 2015, 04:09:08 amHere's the link to the datasheet:http://www.siglentamerica.com/USA_website_2014/Documents/DataSheet/SDM3055x_DataSheet_DS06035-E02B.pdfCan I give you the comparison as a homework assignment?Next up will a description of logging, trend plots etc., maybe later today.