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112 Agilent U1251A/U1252A User’s and Service Guide
7 Performance Tests and Calibration
Calibration Overview
This manual contains procedures to verify the instrument’s
performance and adjustment (calibration).
The performance test procedures allow you to verify that the
handheld digital multimeter is operating within its published
specifications. The adjustment procedures ensure that the
multimeter remains within its specifications until the next
calibration.
Closed-case electronic calibration
This instrument features closed-case electronic calibration.
No internal mechanical adjustments are required. The
instrument calculates correction factors based upon the
input reference value you set. The new correction factors are
stored in the nonvolatile memory until the next calibration
adjustment is performed. The nonvolatile EEPROM
calibration memory is retained even when the power is
switched off.
Agilent Technologies calibration services
When your instrument is due for calibration, contact your
local Agilent Service Center to enquire about recalibration
services.
NOTE
Make sure you have read the “Test Considerations” on page 118 before
calibrating the instrument.