Products > Test Equipment
Brand new Bm869s calibration
mrdave45:
Amazing. :scared:
That's unbelievably useful and a lot cheaper than an mso with the bode plot function enabled. And as it turns out, perfectly adequate for what I need it for.
Woooooooo.
I'd better order one of those interfaces too.
HKJ:
You may want to check TestController https://www.eevblog.com/forum/testgear/program-that-can-log-from-many-multimeters/, it is some very flexible software that can log from BM869s and a lot of other devices. The result can then be shown in charts (Log scales are possible) and/or saved as csv files.
Martin72:
--- Quote from: mrdave45 on February 19, 2021, 03:04:04 am ---Hi,
I've decided that I need to upgrade the twenty year old maplin dmm I bought as a student. It's starting to get a bit flakey and I'm also fairly sure it's quite inaccurate. This has generally not been too much of a problem. Mostly relative measurement have been good enough. I'm now needing to be able to measure various parameters to a decent accuracy as well as better precision.
I'll probably get my self a decent lcr meter too.
Im pretty much set on a Bm869s. This seems to be a good all round meter and should be leagues better than my current one.
I've been searching round the forum about the 869s and it seems there's quite a few comments about these being far off calibration out the box.
I've also read a few posts about people doing a quick calibration. I would have thought a fairly sophisticated pice of kit is needed to calibrate a meter properly beyond checking against a 5v source or whatever.
Do I need to get a calibrated one, to what level, or should I get one stock and put that money towards an ltz1000 reference.
Im mainly needing voltage and frequency to be super duper out of this thing. I expect to get really good capacitance (tightly matching pf caps) or resistance measurements I want an lcr meter. Probably a de 5000.
I think a high end bench meter is a bit beyond budget and probably overkill for what I need so just a good solid dmm should be just the ticket.
--- End quote ---
One of the first thing I´ve done after buying the 869 was to calibrate it external, according to ISO standard.
Had cost me 79€ plus shipping and didn´t regret it so far.
A dedicated calibration lab have unlike better references to calibrate like hobbyists got.
mrdave45:
Thanks for the test software link, that looks like it'll be just the ticket.
As I've already ordered the meter and the spec is an extra 2 decimal places at 0.02%+2d over 1.5%+4d, I'll worry about the calibration a bit later. 2000 count to 50,000 (500,000 at a push) It'll do for the time being (more than do).
I knew my old meter wasn't much cop, but I hadn't realised quite how bad it was. Even though when I bought it it was one of the betters ones they had.
mrdave45:
Meter arrived today, and so far it's so much better than my old one it's not even funny. It begs one of 2 questions.
1. How can meters be made this good (I know there are plenty better).
2. Being as they can be made to be this good, how can they be made as badly as my old one. Which was still a lot better than many others I've used over the years.
Thanks for everyone's help and input. I feel sure I've got the right tool for me at this time.
I'll post some pictures once I've compared the meters on the output of my dacs.
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