| Products > Test Equipment |
| New EEVblog BM786 Multimeter |
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| wizard69:
Well this discussion about the F word is well placed. My 786 arrived Wednesday and as I walked in the house with my new pride and joy I realized it was a bit chilly. Sure enough the furnace had failed literally tripping the main breaker. Once I verified that there was no heat for the night I hit the sack to tired to really care. So no unpacking videos, the meter is already dirty from work on the furnace. The next day I quickly determined that I need a new furnbace motor F! It probably isn't the best way to learn about a new instrument, that is laying on your back, on concrete, next to a dirty furnace. In any event there are things that stand out almost immediately. * The continuity function works really nicely. Nice loud buzzer and the flash of the back light is golden. * The test leads are not too bad for included with the meter. I fear loosing the screw on parts almost immediately so will be looking for a small case of some sort for the meter and goodies. * My Petzl CORE rechargeable battery just doesn't fit. I'm seriously thinking about seeing if can get the battery holder as a spare part to modify as it looks like I would just need to remove the battery separating lugs. Or I could just use standard rechargeable batteries. The Petzl is nice for the self contain charging feature, * While not an issue unique to this meter it wold be really nice if we could get a 3 digit mode when making AC measurements. That is get rid of the fractional component and the other useless data. The fact is all of those on screen digits are useless for a lot of "normal" AC work. It doesn't matter to me if the line voltage is 120 or 120.34 VAC. * I've yet to read the manual! That is a good thing as far as ease of use goes. There are a couple of things I'm not yet clear on but most of my use so far has been on my back so no good bench time. Overall though the meter really seems to be high quality * In any event this meter fits a need and I like the idea that I can help in a small way to keep EEVBlog on the air. |
| xvf22:
Hmm, just got my meter and I like it, continuity is great and the better refresh rate and digits help but having a bit of an issue. My 2709B meter from long ago seems to have no trouble lighting LEDs in circuit. The BM786 can do it on a naked LEDs but any in circuit LEDs (arduinos etc) I've tried they don't light up. Am I missing something and/or being stupid? |
| EEVblog:
--- Quote from: xvf22 on March 16, 2021, 09:57:07 pm ---Hmm, just got my meter and I like it, continuity is great and the better refresh rate and digits help but having a bit of an issue. My 2709B meter from long ago seems to have no trouble lighting LEDs in circuit. The BM786 can do it on a naked LEDs but any in circuit LEDs (arduinos etc) I've tried they don't light up. Am I missing something and/or being stupid? --- End quote --- That would be the drive current and/or compliance voltage. All meters are different. |
| Fungus:
--- Quote from: xvf22 on March 16, 2021, 09:57:07 pm ---Am I missing something and/or being stupid? --- End quote --- Every meter is different. Try using your old meter to measure the voltage/current that the BM786 is applying to that LED (especially the current - it's a constant current source in diode mode). Then switch it around and use the BM786 to measure the current/voltage that the old meter is applying to that LED. |
| bdunham7:
--- Quote from: xvf22 on March 16, 2021, 09:57:07 pm ---Hmm, just got my meter and I like it, continuity is great and the better refresh rate and digits help but having a bit of an issue. My 2709B meter from long ago seems to have no trouble lighting LEDs in circuit. The BM786 can do it on a naked LEDs but any in circuit LEDs (arduinos etc) I've tried they don't light up. Am I missing something and/or being stupid? --- End quote --- What does the meter read when it is not successful at lighting a LED? |
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