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DMMCheck Plus Multimeter Reference(and other References) - Experiences..

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KungFuJosh:
I love the details on the HD's measurements.

Martin72:

--- Quote from: Martin72 on July 07, 2023, 10:51:40 pm ---Meanwhile I remember of my third LCR meter I got, a mastech MS8911 smart smd tester with testfrequencies up to 10khz..Must check it too.

--- End quote ---

Did it, it´s not too bad... ;)
Testfrequency 10khz..(reference)
1050 µH (1032µH)
104.8µH (104.3µH)
10.5µH (10.52µH)
1µH (1.061µH)

1.017nF (1.019nF)
10.14nF (10.16nF)
102.3nF (102.5nF)
1.013µF (1.001 µF)

DCR

100.0 Ohm (100.058)
0.999 kOhm (0.9994)
9.999 kOhm (9.9995)
100.0 kOhm (100.017)

tatel:
Now that I got this thing and almost half a dozen multimeters, I reckon it's time for me to work out some spradsheets. So here it's my first try at it. All I can say it seems to work. But, since I really don't know what I'm doing, please feel free to criticize it sharply and maybe even use it

Martin72:
Hi,
I have taken the liberty of making it more visible, your notes on the sheet as a quote:


--- Quote ---Notes: The sticker in DMMCheck+’s back says AC Amps uncertainty is 0.2% but in the manual I see 0.5%. Am I high?
The sticker also says L, C are calibrated to 0.05% but nothing is said about it in the manual.
No TC specified for many DMMCheck+ measurements. Uncertainty min/max is calculated first. Then, available TC is added/substracted to uncertainty.
869s TC isn’t calculated if T is in the 18-28 Cº ranges. Otherwise it’s added/substracted to uncertainty.
869s’ DC V in dual mode reads 5.0011V. Single mode reads 5.0000 and 5.00006 V. So dual mode = less precision?
No Hz reading when measuring AcmA (0.000), however Hz reading is OK when reading ACV
--- End quote ---

Here my BM869s results:
https://www.eevblog.com/forum/testgear/dmmcheck-plus-multimeter-calibration-reference-experiences/msg4950205/#msg4950205

Interesting thing with the dual display, must check this too.
L/C values: Indeed it´s only measured with a device which got 0.05% basic precision.

Martin72:

--- Quote ---Interesting thing with the dual display, must check this too.
--- End quote ---

Indeed, according to the manual single mode display is only avaible in DCV mode, also the 500000 counts.
Only when DCV, nothing else.

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