Calibration Procedures; Calibration Overview; Closed-Case Calibration; Keysight Calibration Services - Keysight U1242C Service Manual

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Calibration Procedures

Calibration Overview

This manual contains procedures to verify the performance of the U1241C/
U1242C handheld digital multimeter and to perform adjustments (calibration).
The performance test procedures allow you to verify that the multimeter is
operating within its published specifications. The adjustment procedures ensure
that the multimeter remains within its specifications until the next calibration.
Ensure that you have read the
NOTE
calibrating the multimeter.

Closed-case calibration

The multimeter features closed-case electronic calibration. In other words, no
internal mechanical adjustments are required. The multimeter 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 power is switched off.

Keysight calibration services

When your multimeter is due for calibration, contact your local Keysight Service
Center to enquire about recalibration services.

Calibration interval

A 1-year interval is adequate for most applications. Accuracy specifications are
warranted only if adjustment is made at regular calibration intervals. A 1-year
calibration cycle is suggested for operation at room temperature. The calibration
cycle is 1.5 times of accuracy for 2 years except for capacitance and frequency
measurements. Keysight does not recommend extending calibration intervals
beyond 2 years for any application.
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"Test Considerations"
Keysight U1241C/U1242C Service Guide
on page 24 before