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- เผยแพร่เมื่อ 3 พ.ย. 2024
- In this video we have out first look at the new Brymen BM786 DMM.
Feel free to join the thread:
www.eevblog.com...
An old video explaining the transients I apply:
• Programmable Transient...
The data for the meters I have tested may be found here: docs.google.co...
Answers to Frequently Asked Questions may be found here: docs.google.co...
Brymen 869 and Fluke 189 are so very spot on close to each other. Always very identical.
It would be neat to see the waves on the oscilloscope.. As always nice job testing the new meter out!
Interesting to see a sneak preview of new Brymen DMM's.
But not very revealing. Of course this is not a top model.
I'd like to see in what direction top of the range DMM's will develop function wise. Maybe we'll see when Fluke updates it's top of the line 289 (which has been going for more than a decade now I believe). In the last decade we've mostly seen logging functionality and wireless connectivity on higher range DMM's, but I have a feeling most leading manufacturers are very busy working behind the scenes on new top of the line models that will incorporate whole new featuresets.
I for one would love to see DMM's develop functionality like measuring Watts (a few already have that), Watthours and Amphours (especially in combination with logging)
Looking forward to the next test!!
The real life signal testing is under appreciated. Thanks for that. There is not so much real world use for meters being accurate on very clean sinewaves and testing of that.
We went through a few revisions of their firmware. Make sure you watch the other parts before coming to any conclusions.
This meter is a real joy to use. After just a day from the purchase we were able to trace a very complex fault on one particular PCB with this meter. The new PCB we were quoted $1000+ to buy. Therefore it saved us funds on the first run. The latest in blue rubber version seems works really well out of the box and very fast (except the capciitance, it was also mentioned in this video but even though 1.5seconds difference that is all it was and capacity was measured correctly, temperature measurement was extremely accurate). It also very (i would probably say "scary accurate") accurate. It has good sensitivity and resolution and speed on mV range alowed us to use this without any issues with additional clumpfor current measuring (AC) . It also has nS mode which effectevly allows to measure gigaohms..Absolutely great multimeter. One addition we did is to add plastic plugs for current sockets to close them during measurements, to avoid any accidental contact etc. It warns you also if you placed probes incorrectly and this is not uncommon accidently to insert probes incorrectly. It is so nice that we are actually considering to buy a second one BM786
I love this meters test videos. See you on the next on. Be safe!
Have the 869s and love it, only gripe with it is that it doesn't beep in diode mode like the flukes and keysight
And hiokis
Great review, I'm Looking forward transient test. I'm planning to buy bm789 on February next year since I want a meter with LoZ.
The last video is near ready.
Would be interesting to do a test for nS mode alone. Just like Fluke 87 III Briman BM786 can be used for testing insulation for e.g. on car coils etc or diode leakage. It certainly not for stress testing of insulation but gives a very good idea. I guess with some patience even length of unterminated wires can be determined in this mode?
Good job Joe...👍🏼🙂...I have a very strong feeling that between Dave and Brymen..they will look into your initial findings.
By the way, I know that the Extech EX540 and CEM DT-9939 are basically the same meter, but I am partial to the CEM DT-9939 seeing as I now own one...so it would be really groovy to see you feature it in your upcoming shakedown...👊🏽🙂
I've made a few videos showing these meters, including transient testing. The data is stored in the spreadsheet and the videos can be found using the search off the main page. I think when I published the video on the $120 deal, they sold out in a couple of days.
@@joesmith-je3tq Now that is really nifty! You can't beat that sort of "free publicity" for a product...🙂...just goes to show Joe, your testing and evaluation of these meters carries a fair amount of clout....👊🏽😁
@@dreamvouyer67 I think it goes both ways. I doubt too many companies are confident enough in their products that they want that this sort of advertisement. The channel also remains fairly small. I would imagine companies who are wanting to advertise would be looking for larger channels with a lot of bling, not some EE sitting in his home lab actually testing their products. The channel will most likely continue to be dry and data driven. On the plus side, viewers won't see me begging them to hit subscribe, like and bell buttons or to join my Patreon anytime soon.
Dear wonderful video. I spoke previously so far, there are no new models. If only the year of manufacture, type of processor is added to the file, and how many times of reading per second is it possible to modify the file (multimeter from eevblog)
I think you suggesting like the other comment, that there has been little advancement in handheld meters. Personally I doubt I am the target audience for suppliers. I would expect most people who use handhelds are techs and electricians. This explains why we don't see higher end meters like the 289 coming from Fluke. Personally, I like my old HP34401A. For my electronics hobbies, the BM869s has proven to be useful. For Fluke, I would rather have the 189. Like the Brymen, it's just a nice basic meter.
Which one is the best multimeter for everything. ( home, industrial, electricians and for electrical users)
It's a very common question covered in the FAQ. I do not make recommendations nor am I trying to sell meters.
I already want it :-) Like the format, not as big as the bigger brother. The red circle around the switch is like go faster stripes on a car :-D. Wonder what the price will be for it. Can't wait for more videos on it and if possible a peek inside too.
They all come apart at some point so stay tuned.
Great Video as always
Thanks for sharing :-)
wonderful video, as always
Nice review, seems they need to fix some problems.
It sounds like they may already have a fix. I am expecting the updated meter to arrive soon. Stay tuned.
nice video... i have used lots of meters over the years and really like the extech equipment for the money and is great for hobby arduino and the like projects... thanks...:)
I had to scrap my Extech handheld meter. Loaned it out one too many times.
Here's the manual: www.eevblog.com/files/BM789-Manual-Original-Final.pdf
In light of the rapid development, it is possible to test some new measuring devices of Chinese origin with an explanatory video. Like device (bside zt-5566)
It's certainly possible to test any meter and produce a video about it. The question becomes is it worth the effort. If you follow this channel you know I have not been spending a lot of time looking at low end meters. The reason is these are not designed to withstand the rigors I put them through and they really are not something I personally would use in my hobby so I have little interest in looking at them. If UNI-T were to improve the UT181A for example, I would test it because that meter in particular has many of the features I want. I will leave the clock radios for the other channels to spend their time on.
Why so few of them were produced. They are not available for sale. Are there many defects?
Of course the BM786 is for sale. I would have no way of knowing how many were produced or what you would consider are a few. I am not aware of any problems after the release outside of what has been discussed in the forums.
How this model of multimeter compares in terms of reliability of the screen to lets say to Fluke meters?
I would assume both companies meet their specified numbers. So assuming you are asking about accuracy, I would download both manuals and compare the specs.
@@joesmith-je3tq Thanks Joe, question was rather about number of screeen failures of the particular multimeter brand per 1000 multimeters produced. This data probably not available from the manufacturers. By the look of how Brymen 786 works after several days of use the desire to buy more of this blue (True Blue Meter :) has developed. Accuracy wise is just beyond believe that in such compact form something great was produced finally. It is just shear joy to work with this meter, though instead of display flashing in BeepLit(TM) personally I would prefer red diode flashing when doing continuity test, almost tempted to connect one to buzzer in parallel and cut off the light flashing
@@stanleywhiteman6450 There are features on several of the products I have looked at that I would like to see combined.
Fluke 189.
Old indeed.
Obsolete?
Not really, i'd say fluke 189 will give you best bang for your money among others.
Good input protection without the need to modify it.
Good accuracy stability in the long run.
50000 count should be good for many electronics, especially it can do 1 uVolt resolution.
Everytime I compare specification and pricewise of good bench dmm, turns out fluke 189 still give you the best value, hence I haven't get my bench dmm yet.
I suppose a good bench dmm should be somewhat significantly better than my handheld dmm.
As 4 wire resistance measurement you find on most bench multimeter, simply get a 1amp constant current source and those fluke with 1uVolt resolution.
A bit cumbersome with 2 device, yes; but surely beats the price.
Bm269s is surely good one, but hard to find and pricewise it is still more expensive compared to a good condition 2nd hand fluke 189.
I wouldn't mind having a new Keysight 3458A but that $12,000 is a bit much for the few times I have needed something better than my old 34401A. Many of the parts I have measured where I am looking at low resistance, would never come close to handling an Amp.
I am a bit worried about this “nano semen” thing. As I’m approaching my 40th birthday, is it gonna happen to me too? 😧
Don't worry, I'm 42 and my “nano semen” are still going strong; another one on the way (late April, early May 2021)!
No doubt.
Explain 60,000 counts what that means. I’m used to a very, very old Fluke 83 (late80’s?? Or early 90’s). I have no idea how many counts it is, I just know it’s very good. I also have the 131GW and dislike it very much and never grab for it. I did order a BM786, knowing that it supports Dave and looks a lot nicer than the 131GW (yes, not as capable, but more useable).
PS - I never really heard of AC+DC mode and no idea the practical use for that?? I like a dual display where a meter shows the ac voltage and the DC voltage above (or below) it.
@@Daveyk021 I find it odd you would purchase such meters without at least a basic understanding of them. Of course, if the only goal is to support Dave, then I wouldn't be too concerned. If you really want to learn, the internet is a great source. www.fluke.com/en-us/learn/blog/digital-multimeters/accuracy-precision
And I do apologize for that last part. That was a little evil and a little disgust on my part. I am not an amature and have been around electronics since the late 1970s. I know test equipment, just not necassarily what some of the specifications of the test equipment means. I did watch an old videos of Dave's from 2009 or 2013 (I forget which) and he was talking back then of 4000 and 6000 counts being high. I do know that allows more digits past the mantissa on higher and higher ranges. My question was about 60000 counts, when I thought 40000 counts was super high in a hand held DVM. 60000 counts sounds huge. Is that buying you a higher A/D rate? The meter is probably still about 1/1000 resolution in most ranges. I can remember in the early and mid-1980s, we would have sold our souls for a digital meter that could do 5 digits of resolution, or .00001 volts. Back then we were calibrating a digital UT thickness gauge with .0001" of resolution. The digital readout was still basically an analog meter. A DVM of one digit greater (or .00001v resolution) was needed to adjust that analog circuit for the digital readout. Fluke had a meter with side buttons (I forget the model #), that could do .00001v resolution in a 1 volt range (I think it was). I have no idear how many counts that would have been back then. I'm sure it was not any where near 4000 or 6000 counts of 10 years ago. Now, besides, digits past the mantissa, what is 60,000 counts buying you. That is what I was trying to ask. To me, it seems a lot more than a basic knowledge of meters question.
So I apologize for my poor attitude earlier.
And in all my 40 years, I have never used (or probably even heard of AC+DC measurement or what it was used for. The 131GW can display both, and that is cool, but that is not what AC+DC is for or doing in this 768 meter. I do not feel like a beginner after 40 years and do not feel like that is a basic meter question.
I ordered the new meter as it seems very good, and still using a old Fluke 83 for trouble-shooting (not keeping it certified) looks and feels archaic. I want something new that I can like as much. As I said, I have a 131GW and its auto-ranging resistance speed, and poor display, or difficult to read I should say, of the manual range that you are in, has turned me against it. I found that free harbor freight meter (yuck) easier to identify resistance issues. I have other DVMs and am not really thrilled with any, and keep going back to the old 83. I am hoping this new one will be my new go-to choice.
@@Daveyk021 www.fluke.com/en-us/learn/blog/digital-multimeters/facts-about-true-rms-measurement
@@Daveyk021 AC+DC comes very useful when you are checking rectifiers (you can separetely measure AC and DC and then calculate mentally ofcourse, but this done "automagically" by the meter in this mode).
New subscriber here.
Welcome.
Designed by Dave:-)
I doubt you meant it was designed by a small fish.