Chapter 1 Calibration Overview RIGOL
DM3058/DM3058E Calibration Guide
Chapter 1 Calibration Overview
Calibration Interval
Periodic calibration is required by the multimeter. The calibration interval depends on
the requirement on the measurement accuracy.
For applications that require relatively higher measurement accuracy, the
recommended calibration interval is 90 days; for most of the situations, a 1-year
calibration interval is acceptable.
The accuracy specification can only be guaranteed when periodic calibration is
performed.
No matter in which kind of application environment, calibration intervals longer than 1
year are not recommended.
Calibration Notices
No matter which kind of calibration interval do you select, it is recommended that you
perform a complete re-calibration when the calibration interval expires to ensure that
the accuracy of DM3058/DM3058E is within the specification within the next
calibration interval.
If no re-calibration is performed, the instrument might not be within the test limits
even though the instrument passes the performance verification test.
Calibration Protection
The calibration protection function is used to prevent accidental or unauthorized
calibration operation. DM3058/DM3058E is in safety protection state when leaving
factory. Before calibrating the multimeter, you need to input the correct calibration
password to unlock the safety protection.
The calibration password can include numbers (0 to 9) and English uppercase letters
(A to Z) and cannot exceed 10 characters. Users can modify the calibration password.
Before modifying the calibration password, you need to input the correct original
password. After the new password is saved, the password will not be lost at power-off
or factory reset.
The default calibration password is "DMCAL".
Modify the password
You can use the direction keys at the front panel of DM3058/DM3058E to input the
password. The up and down direction keys are used to select the character; press the
up/down direction key to switch among "0 to 9", "A to Z" and "space". The left and
right direction keys are used to move the cursor.
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