Brymen B869s - lack of diode beeping - Page 1
Forum section: electronics / general

author: fichamba
author_rank: Contributor
timestamp: September 21, 2025, 03:45:33 pm
content: Hello everybody:I had received my recently purchased Brymen B869s. I bought it because it seemed to me a good DMM (and it is). BUT there is something which is unforgivable to me: the lack of “beep” when diode testing.I also own the magnificent 121GW, and it does have this feature, as all of my Flukes.For me, this make me put the DMM aside. It’s not a comfortable thing being at the microscope checking diodes and mosfets, and take your head from the binoculars to look at the display.Does somebody has the same problem? If so, please report it to Brymen in order to implement this feature in new FW revision, please.I’m so sorry, because even the beep tone is loud enough for me (I’ve modified nearly all my bank DMMs in order to boost the beep level, or even lower its frequency…4Khz is a bit high at certain ages…).Thanks!

author: Kean
author_rank: Unknown
timestamp: September 21, 2025, 05:15:26 pm
content: No DMM is going to be perfect for every application, and I generally prefer my Brymen 869s over the EEVblog 121GW. Both have their strengths and weaknesses, and I use whichever suits my needs.For your issue, if you need to audible indication then use continuity mode instead of diode mode. Or just use your 121GW or Fluke seeing as you already have them.FYI, Brymen do not make the 121GW. It is made by UEI.Also, this post also does not belong in the Metrology section of the forum.

author: 2N3055
author_rank: Super Contributor
timestamp: September 21, 2025, 06:19:24 pm
content: Quote from: fichamba on September 21, 2025, 03:45:33 pmChange the title, please.Nobody deceived you.BM869 is one of the DMM that is very well reviewed and all the details about it are well known.Diode beep is not some universal "law" that DMM has to implement. Many meters do not.If you wanted to buy Brymen DMM with that kind of diode beep you should have bought BM78x series.They are also very well reviewed, excellent meters and they do have DiodeBeep you need.Deception is if manufacturer says something exists but does not. Brymen didn't do that. You presumed.It is in fact actually deception for you to claim to be deceived. Funny that.

author: TimFox
author_rank: Super Contributor
timestamp: September 21, 2025, 06:47:25 pm
content: "Beep" is normally used withcontinuity,notdiode test.A low threshold of resistance is needed for continuity, but the diode test measures forward voltage at a low current, which varies with diode type.

author: joeqsmith
author_rank: Super Contributor
timestamp: September 21, 2025, 06:50:29 pm
content: QuoteWhy is your lack of ability to read Brymen's problem? The manuals are available for free, on-line, in different languages.

author: fichamba
author_rank: Contributor
timestamp: September 21, 2025, 06:53:12 pm
content: Thanks a lot to all of you for your explanations.Yes, I can use a Fluke or any other DMM to measures diodes and mosfets, which has beep indication. But you know: when you are working, and your choice is one of the DMMs, you are not changing from one to another.And indeed, there are no perfect DMM. I always look at me as a DMM collector; I have a lot of them. I love the battery duration of the Fluke 87V, but I don't like the count number...but also love its beeping sound, very audible. Not he same as with the Keysights, Siglents and HPs. Some of them doesn't have 10A reading...and the big Fluke (sorry, I can't remember the model, maybe 2xx) eats the batteries very fast (great DMM, by the way).And the manuals not always are completely clear.Sorry to see this post does not belong to metrology section. I can swear that I was looking for the best section and I thought it was this one.The Brymen B869s is a great DMM also; great speed, great resolution... I have it since 2 days ago. I bought it in the Brymen web page in Poland, so I don't know if they can swap it for the BM789, which in fact has the diode beeping and visual alert...with 60.000 counts instead. Cheaper.Anyway, as I told at the beginning, thanks a lot for your help. And I don't know how to move this post to which section in the forum...sorry.BTW, that's the reason why I don't like to buy anything without testing it. But yes: it appears very clearly that the BM7xx series has the diode alert. But you know...most expensive doesn't always mean better.

author: joeqsmith
author_rank: Super Contributor
timestamp: September 21, 2025, 07:15:43 pm
content: Quote from: fichamba on September 21, 2025, 06:53:12 pmEven if the manuals were not available, there are countless videos demonstrating this meter. They are normally free to watch. Even if not in a language you understand, I would expect you to have some idea what was being demonstrated.QuoteHow about the test equipment section?