TA-0420: DMMcheck Plus Rev. 8 - My Best for Multimeter Verification

[@KB1UIF]

Tony, thank you for the discount code. My DMMcheck Plus arrived yesterday, and it's working great. I appreciate you pointing out the special discount. Thank you.

[@TonyAlbus]

Great!! thanks for getting back and leaving a comment. enjoy the DMMcp!

[@mostlypostie1]

That DMM6500 - wow. awesome!

[@TonyAlbus]

oh! yeah, i love it, i should have bought it when is was in introduction 4-5 years ago, the price has increased a lot. but still with this current higher price, its worth every penny.

[@nckeller]

Very thorough, well done. Thank you for taking the time to go over all the functions.

[@TonyAlbus]

Thank you Russ ! is geat for a quick sanity check for your old meters too.

[@german.chanel]

Талян красава в какой раз! Интересные безделушки находишь на просторах интернета и освещаешь их 👍 спасибо за видео

[@TonyAlbus]

Thank you so much!

[@gtretroworld]

Over the years I have just taken my test equipment for granted and presumed it was near enough accurate but this is next level. Some lovely Reference equipment there Tony.

[@TonyAlbus]

Thanks Niel, yes very happy about it, its a great sanity check for your DMM's

[@gtretroworld]

@@TonyAlbus I only recently replaced my old Fluke 12 with a new Fluke 117 as i sometimes like to play with AC and the none contact voltage detection is superb, hopefully it is somewhere near accurate for my needs. I am currently looking for a budget Scope for occasional use.

[@TonyAlbus]

@@gtretroworld Fluke is a solid choice ofcource for DMM. for a scope maybe look at a Siglent maybe, you cou;d regred later if you go for a Hantek or Owon... compared to Siglent its just leggy, i never regretted buying a SDS1202X-E as my first new scope. its worth the extra money

[@gtretroworld]

@@TonyAlbus The Siglent looks reasonable enough value Tony so i may give that model a try, maybe you should do a quick video with it if you still have it. 😁

[@TonyAlbus]

@@gtretroworld i have a video with 2 owon i think about bandwith, there you also see a quick look at the Siglent, where you clearly see its much better. i think this video.. kzbin.info/www/bejne/hmjaoZKQobqbsLc and yes i still use it even.. that 4 years and still happy. Also some things i say in the video i know better now, its an older video :)

[@jspencerg]

That graphical dmm is pretty nice. You've shown how choosing a good reference is another rabbit hole unless one is ready to plonk down the cash for calibrations or expensive standards. Repairs of electrometer reminded me of need to adjust different scale references. I built my version of the esi sr1050 transfer standard using 15ppm resistors. Now the 10,5 and 2V references can be scaled to the lower voltage ranges. Of course that led me to the fluke 5100 which is the newest calibrator I could afford.

[@TonyAlbus]

Thanks Jeff! yes the Keithley is amazing, i wanted one for years and years, and then the prices went up and i stopped looking. but the more i saw the device on other channels the more i still like dit, it so fast and powerful, crazy fast sample and lost of memory..and on top , so easy to use, its ful of trick , i think i only know 10% of what it can do. The 5100B is a great device, and indeed just 5Volt for calibration is not enough for all ranges. but this tool is great for a quick sanity check of the DUT

[@three-phase562]

Nice to see they are continuing to improve the unit. I have a version of direct from America, but the capacitance and inductor board is always out of stock whenever I look on Welectron, so just treated myself to a version 8.

[@TonyAlbus]

Yeah!!!

[@wa4aos]

The one who dies with the most toys, Wins !!!! Tony, may you live for ten more decades but it looks like you may win !! Enjoyed your video !!! 73, Glenn WA4AOS

[@TonyAlbus]

Thank you Clenn! my best to you too!

[@alpcns]

Tony, you have so much nice stuff. No need to giftwrap it, I'll take it as-is 🙂

[@TonyAlbus]

Good to know :) .. some also goes to get other, but its dificult to let go of some stuff.

[@Frank_K4FMH]

Good job! I upgraded mine to this latest version. Gave the older one to Martin M1MRB while he was here in the US visiting me. This is a worthwhile tool for the workbench with good test gear. 73 de K4FMH

[@TonyAlbus]

Thanks Frank, yes its great, i am sure your friend is very happy with it. i think i will do the same.

[@zdzisiek1979]

Ciekawe urządzenie :) Pozdrawiam

[@TonyAlbus]

Thank you!

[@universeisundernoobligatio3283]

Great comparison, suggest some averaging on your DMMs, for DC it will be easer to get the value.

[@TonyAlbus]

Thanks! yes i switched off all filters/averaging and switched on high sample, just because i wanted to show the difference.

[@MrDubje]

Nice reference. I know you did a video on the Advantest R6142, but I would expect you to compare against that as well with that nice Keithley meter.

[@TonyAlbus]

For me price wise what i did now made more sense, i also have a Fluke 5100B i could use, but i did not see the point in this video. but i like your idea to see how the R6142 looks on the Keithley screen.

[@RJHElias]

Wouldn't it be a nice idea to raffle all the old DMM Check devices among your followers? This way you also get some space in the attic.

[@TonyAlbus]

Yes that sounds like a nice idea, lets see what and when i can do at some point.

[@ivolol]

Did you put your DMM6500 on 1G impedance to read the battery? As long as it's in some box to protect from air currents it should be almost as stable as the zener. Before buried zener references completely surplanted them, they used to use a battery! A Weston standard cell. You had to read it only using differential null technique, because any current drawn from it (even using a 10M impedance voltmeter!) could obviously change the value.

[@TonyAlbus]

Left the Multimeter on 10M .. that was the point... using the references i also did. a Weston battery .. okey.. will need to look for that then :)

[@TheGrantourismo]

Old Escort 2030 gives much better stability after warm-up (last digit fluctuates on 6.5 Fluke 8846a) . But it has only DC and square AC. Definitely DMM_Check is very good solution for 4.5 DMMs.

[@TonyAlbus]

Thanks, interesting, not heard of an Escort other then 4 wheels or 2 legs, will try to look for it.

[@and1424]

Hello. Ever tried the pvds2 mini? Cheers.

[@TonyAlbus]

Hi, not tried yet, but funny you mention this, i just contacted Doug from Voltagestandard and Johannes from WRYtech this week, so lets see if i get any response both very interested devices for sure to have on the channel

[@ssalient]

Nice comparison! I wonder how current graphs would compare from these units.

[@TonyAlbus]

Yes that would be a nice test indeed... thanks!

[@Psi117]

Hi Tony! Thank you! But isn't LT1021BCN8 with 5 ppm too little for a 6.5 digit DMM's? I mean is a great tool for handheld DMM's but for a 6.5 digit shouldn't be used at least a reference with LM 399 as is found inside the DMM's?

[@TonyAlbus]

You are correct, i did mention DMMCheckPlus is for max 4.5 digit multimeters and accuracy for DC voltage is 0.007% , i just wanted to show more digits so you can see better the difference between those Process calibrators.

[@Psi117]

@@TonyAlbus Right! Thank you!

[@karlD1963]

Hi Tony, is the AC voltage output impedance known? I'm wondering whether it could be used to check an RF power meter's dBm reading?

[@TonyAlbus]

Good question, i thought i read it somewhere on their website, but i cant find it now. They have a contact form, i am sure they will respond

[@craxd1]

I've been debating making affordable resistance standards since I have the entire lot, here, down to 0.001%, and the large ESI 242B bridge. I wonder if an oversized resistance standard would sell if it was priced for the amateur workbench? The problem with many standards is keeping the shop the correct temperature.

[@TonyAlbus]

Thanks for sharing, interesting, yes temprature is a big issue in home labs. mine is between 18 C in winter to 27+ C in summer.

[@KB1UIF]

I have considered getting one of these. Maybe I can calibrate all my calibrators with one of these. Lol

[@TonyAlbus]

You will not be dissapointed...i like it! ..

[@TonyAlbus]

Do you life in the US? a promotion is coming soon i overheared

[@KB1UIF]

@@TonyAlbus yes, I live in the US.

[@TonyAlbus]

@@KB1UIF on dmmcheckplus.com use voucher Albus to get 10% discount

[@TonyAlbus]

@@KB1UIF at dmmcheckplus com you get a 10% discount with code: Albus

[@Stu66orn]

I've bought mine just when they arrived to Welectron. Actually I spammed them with emails on availability for months. Which dmm do you like more GW 6100 or Keithley?

[@TonyAlbus]

LOL, yes same here :) waiting is hard when you want something. The GDM9061 is great it surpriced me more and more, it super stable and has some nice tricks, but the keithley is amazing, so easy to operate so fast so much memory, the Keithley is a different class (and price) but worth the extra.

[@Stu66orn]

@@TonyAlbus Could you possibly make a video on feature overview you discovered?

[@TonyAlbus]

kzbin.info/www/bejne/j2fai56wfLiWgc0

[@LawpickingLocksmith]

Now I wanted to be the nerd that collects instruments. Now I give up!

[@TonyAlbus]

So much nice stuff around :))

[@LawpickingLocksmith]

@@TonyAlbus I started again measuring color. But my shack is just too crammed to even film in it.

[@evgesh87]

В кадре мера сопротивления Р331 откуда?

[@TonyAlbus]

They are from ebay, i think from Ukraine, they are super stable still.

[@evgesh87]

@@TonyAlbus здорово))

[@Stephen_Heathcote]

We need to see inside 😂

[@РоманОпалев-з8ь]

Там такая же схемотехника,как и в ранней версии DMM)

[@Stephen_Heathcote]

Surely they must have made some changes, either way, it's good to see the circuitry 🙃

[@TonyAlbus]

Yes we indeed need too ... silly me.. i did not even look myself.

[@РоманОпалев-з8ь]

Тони,спасибо за познавательное видео и привет из России!Для своего старенького UNI-T UT61E я решил сделать источник опорного напряжения,взяв за основу REF5020IDR,думаю его точности с запасом хватит для проверки этого мультиметра.У мультиметра изменён резистивный делитель опорного напряжения,а так же введена термокомпенсация,так как с завода он имеет довольно большой температурный дрейф,а так же источник опорного напряжения встроенный в контроллер имеет 75ррм\с.

[@TonyAlbus]

Sounds like an interesting project for sure, thank you for sharing. Greeting sir

[@piotr-Garou]

👍

[@TonyAlbus]

Thank you!

[@foxmoulder2430]

Ich habe die Referenz bestellt, leider im falschen Land... (Mein Fehler) DMM Check

[@TonyAlbus]

No worries its the same source, maybe Welectron would be faster, but its shipped very well packeged from the US too. i received my first also from US.

[@mp1454]

😮😊👍🏻

[@TonyAlbus]

Thank you!

[@stevenbliss989]

I do NOT forgive any supplier that scratches off IC markings! ....and to design and build this device is WAY WAY less that the INSANE asking price!

[@jspencerg]

Yeah, it's just like a machinist or woodworker who at some point just builds the things needed rather than pay someone.

[@ivolol]

Building the device is not such a problem (although designing it for the best possible operation requires a good bit of pre-existing knowledge). Getting access to 3458A 8.5 digit DMM and accurate LCR meter to accurately measure all values within margin of error.... now that is more what you are paying for.

[@TonyAlbus]

It also about build quality itself and mostly the calibration, not just the parts.

[@stevenbliss989]

@@ivolol Not as much as you might expect. 0.1% & 0.05% are cheap and easy to get, check out LCSC. V references are easy too. But capacitors and inductors are hard & is only practical to use NPO for caps & measure it! Inductors are less hard, but still can only be done by measuring it! So I partly agree, but the 8.5 digit DMM will not help with the caps and inductors, a high end LCR bridge needed, and although they claim 0.1%, I doubt it!

[@stevenbliss989]

@@jspencerg huuuuhhh!????

[@585585MC]

no teardown = shame on you

[@TonyAlbus]

yes agree

[@markslab28]

No teardown :(