Products > Test Equipment
New EEVblog BM786 Multimeter
EEVblog:
--- Quote from: joeqsmith on February 24, 2021, 01:11:39 am ---
--- Quote from: Pampalini on February 23, 2021, 08:10:16 pm ---
--- Quote from: joeqsmith on February 23, 2021, 01:04:49 pm ---Someone wrote me about the magnetic strap having an effect on the beepers loudness. I was able to replicate it on all the 78x meters I have. It's not a small effect. You can make the audio very faint with it. Really odd. I have written Brymen about it.
I don't use these magnetic hangers often and wonder if there are other meters with a similar problem.
--- End quote ---
Ups... It means I should avoid laying my new BM789 on linear motor or any other magnetic field source :o. I didn't buy magnetic strip only because it was not available yet so my beeper still works. Thanks for the warning.
--- End quote ---
Remove the magnet and the audio level returns.
--- End quote ---
Oh, so it's not permanent damage?
joeqsmith:
--- Quote from: EEVblog on February 24, 2021, 01:44:26 am ---
--- Quote from: joeqsmith on February 24, 2021, 01:11:39 am ---
--- Quote from: Pampalini on February 23, 2021, 08:10:16 pm ---
--- Quote from: joeqsmith on February 23, 2021, 01:04:49 pm ---Someone wrote me about the magnetic strap having an effect on the beepers loudness. I was able to replicate it on all the 78x meters I have. It's not a small effect. You can make the audio very faint with it. Really odd. I have written Brymen about it.
I don't use these magnetic hangers often and wonder if there are other meters with a similar problem.
--- End quote ---
Ups... It means I should avoid laying my new BM789 on linear motor or any other magnetic field source :o. I didn't buy magnetic strip only because it was not available yet so my beeper still works. Thanks for the warning.
--- End quote ---
Remove the magnet and the audio level returns.
--- End quote ---
Oh, so it's not permanent damage?
--- End quote ---
It doesn't appear to be in my meters anyway. You move that magnet around the sweet spot and you can almost silence the meter. I tried it with the few larger magnets as well. Same effect, remove them and the meter recovers.
EEVblog:
Yep, sure enough:
joeqsmith:
Crazy. I haven't looked at any others but many of the beepers look similar from what I remember. It may be fairly common.
IanB:
If it's a magnetic beeper, then of course a magnet is going to affect it. But when you use a magnetic strap hanger, surely the magnet is supposed to be on the other end of the hanger than the meter? Why is this even worth talking about?
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