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| Brymen BM789 continuity tester response |
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| mwb1100:
Comparing the functionality and the specs of the Sanwa PC7000 with the Brymen BM86x it's clear that the PC7000 is more or less a BM867s with a temperature measurement added, VFD (low pass filter) added and mostly similar but sometimes slightly better specs. Another way to look at it is: it's a BM869s with only one temperature measurement instead of two and slightly worse (BM867-ish) specs. I'll eat my Harbor Freight freebie if Brymen isn't the OEM. One curious thing about the PC7000 is that the backlight only stays on for about 15 seconds - which is shorter than the ~30 seconds on original BM869s. Brymen has since bumped the backlight timeout on the BM86x to about 4 1/2 minutes. I find short backlight timeouts immensely annoying. Additionally, the Sanwa PC720M is a Brymen BM525s with only one temp measurement instead of two. Sanwa PC700/PC710 are from the Brymen BM82x series - I haven't looked closely enough at the specs to be certain about this PC700/PC710 claim, but it sure looks like a duck. As I've said somewhere else (I think it was joeqsmith's favorite multimeter reviewer :)): I like Sanwa's look better than Brymen's, but not enough to pay Sanwa's premium over the Brymen prices. To make this post a little more on topic, I have several Brymen meters and the continuity on each of them works fast enough that none are annoying to me, and they are subjectively as fast or faster than any other meter I've personally tried. But I can't say whether they are quantitatively top-of-class. |
| J-R:
I took a cursory look at the Sanwa PC7000 internals and compared it to the BM86x internals and they are quite different. Specifically the Sanwa has a separate input jack PCB as well as a daughterboard for the IR. Yes, the Sanwa clearly has a BTC (Brymen) chip in it, though. I would suspect they mostly kept the circuit design but changed the layout because of various reasons. References: https://lygte-info.dk/review/DMMBrymen%20BM869s%20UK.html |
| EEVblog:
--- Quote from: J-R on January 22, 2024, 12:01:19 am ---I took a cursory look at the Sanwa PC7000 internals and compared it to the BM86x internals and they are quite different. Specifically the Sanwa has a separate input jack PCB as well as a daughterboard for the IR. Yes, the Sanwa clearly has a BTC (Brymen) chip in it, though. I would suspect they mostly kept the circuit design but changed the layout because of various reasons. --- End quote --- Very interesting. I wonder if Sanwa designed it and just used Brymen's chipset, or if they contracted out the design to Brymen. |
| Fungus:
--- Quote from: mwb1100 on January 21, 2024, 07:33:16 pm ---One curious thing about the PC7000 is that the backlight only stays on for about 15 seconds - which is shorter than the ~30 seconds on original BM869s. Brymen has since bumped the backlight timeout on the BM86x to about 4 1/2 minutes. I find short backlight timeouts immensely annoying. --- End quote --- They claim it's to save our batteries. The thing I don't understand is that Brymens have "intelligent APO" (to prevent auto-power-off if you're actively using the meter) but they can't figure out how to implement auto-backlight. Why can't the backlight just be dim when the screen is showing zeros for a few seconds? |
| Panter72:
Hi guys! What is happening with SANWA? I`ve based my workshop on their DMM`s for two decades now. Most used instruments are PC5000 and later PC5000a DMM`s. I use them daily and I love them and ttrust them with my life. There are a couple more but not USB connectable. What is bothering me? I`ve also purchased a PC-link, and later PC-link+ logging software, set up some sensor and transducer calibration curves in it and, a couple of years ago, it gave up on me, saying that the licence had expired, and I`ve bought those fair and square. First, when I`ve bought the second PC5000a (previous was 5000 model, no a`s) those would not work together on a same software?! Those instruments were bought just a couple of years apart. Now, they do not support these instruments on their PC7 new software. I wrote to them, and got nothing. Also, I`ve asked to extend my licence, pay for it the second time... NO ANSWER AT ALL!!! I relly like the PC7000 but I`m not buying it! Nope! To base myself on a fluke or, God forbid, Gossen, would cost an arm and a leg. Does anybody have any idea, since the chipsets should be the same ... would Brymen software work on old SANWA`s? |
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