Brymen has never answer to my question
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So I don't know how their support is...
Also, I have recalibrated my BM257S with a U1272A which come from an Laboratory (I have it only a couple of days), and have a independant january 2020 calibration certificate (not from Keysight).
I have only calibrate the 3.000V/30.00V (yes, even it is a 6000 points, the internal references are in 3V).
Here are the button combination I have found after many tries:
- SELECT+HOLD + GO OHMS: screen "000.0"
- Select DCV : screen shows "3.000V" (the brymen waits for this 1rst step)
- Put a real 3.000V DC source and push SELECT+REL, the DMM shows the internal value of calibration (6.xxx)
- For store the new value : SELECT+RANGE
- Then Next Step or switch OFF.
Now my BM257s is always spot on this calibrated certified U1272A on the 6V/60V ranges.
So, after finding the right memory byte for unlocking the 1000A on the UT210E, I give you the answer for BM257s.
For U1272A users: do you find this one as a good DMM ?
I'm thinking about buying this one, but it's more than 400€ so I prefer asking before..Thanks !
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