Products > Test Equipment
Uni-T UT181A and calibration
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JulienS:

--- Quote from: skander36 on March 30, 2020, 06:18:04 pm ---I think I have found a door but we need the key ...
Keeping pressed F2 and F3 pres On/Off button.
And the screen with a 5 zeros appear . This can be modified with arrows to form a code . 00000 as to CEM is not working ...
I will search for key used in other uni-t dmms .

--- End quote ---
Hi everyone, better late than never ! the key code is 02089.
joeqsmith:
I predict an increase in posts about how the UT181A is not accurate.  :-DD
Bobson:
UT-171B to enter CAL mode turn on while pressing RANGE+STORE. Password is the same, 02089.
However, unlike UT-181A where you just type in proper values, UT-171B shows some CHANGING value at secondary readout, and it is unclear how to change primary value.
stj:
lets apply some logic.

the meter is new.
it was probably calibrated on an automated system before being packed.
it has travelled a long way.

i would open it and look for bad soldering or other physical issues.
Bobson:

--- Quote from: stj on June 27, 2024, 12:52:32 pm ---lets apply some logic.

the meter is new.
it was probably calibrated on an automated system before being packed.
it has travelled a long way.

i would open it and look for bad soldering or other physical issues.

--- End quote ---

How does it correspond to the adjustment protocol?
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