Products > Test Equipment
Brand new Bm869s calibration
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larsdenmark:
I bought my BM869s 5 years ago and the DMMChecker 3 years ago and today I get the reading in the image. I'm quite happy!
J-R:

--- Quote from: larsdenmark on February 25, 2021, 03:46:34 pm ---I bought my BM869s 5 years ago and the DMMChecker 3 years ago and today I get the reading in the image. I'm quite happy!

--- End quote ---

But have either been checked against something with a current calibration?  My DMMCheck Plus drifted quite a bit within the first year but has been much better since then.
larsdenmark:

--- Quote from: J-R on February 25, 2021, 05:31:36 pm ---
--- Quote from: larsdenmark on February 25, 2021, 03:46:34 pm ---I bought my BM869s 5 years ago and the DMMChecker 3 years ago and today I get the reading in the image. I'm quite happy!

--- End quote ---

But have either been checked against something with a current calibration?  My DMMCheck Plus drifted quite a bit within the first year but has been much better since then.

--- End quote ---

No. Neither have been checked since purchase. I guess both could have been drifting since I got them.
miro123:

--- Quote from: joeqsmith on February 19, 2021, 01:03:03 pm ---
--- Quote from: mrdave45 on February 19, 2021, 03:04:04 am ---...
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.

--- End quote ---
Seems?  Please post the the links.  I would like to read them for myself.   
 

--- End quote ---
Hi Joe,
see attached picture of my BM869s - 2 years old , before calibration + adjustment @ 50V range.
In general my BM869s is extremally linear . The voltage reference seems to be the weakest point in terms of TC and mid-long term stability.
He was off directly by the purchase but it get worst to the point that I adjusted it.
I'm rising question why youtube reviewers check 50,000/500,000 meters at 20% of full scale - 1v,10,100v?
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