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6
Performance Tests and Calibration
Calibration Overview
N O T E
Closed-case electronic calibration
Agilent Technologies' calibration services
Calibration interval
132
This manual contains procedures for verifying the
instrument performance, as well as procedures for making
adjustments where necessary.
Make sure you have read
calibrating the instrument.
The U1253A true RMS OLED multimeter features closed- case
electronic calibration. In other words, no internal
electro- mechanical adjustment is required. This instrument
calculates correction factors based on the input reference
signals you feed into it during the calibration process. The
new correction factors are stored in nonvolatile EEPROM
memory until the next calibration (adjustment) is performed.
The contents of this nonvolatile EEPROM memory will not
change even when the power is switched off.
When you instrument is due for calibration, contact your local
Agilent Service Center for a low- cost recalibration service.
A one- year interval is adequate for most applications.
Accuracy specifications are warranted only if calibration is
performed at regular intervals. Accuracy specifications are
not warranted beyond the one- year calibration interval.
Agilent does not recommend extending calibration intervals
beyond 2 years for any application.
"Test Considerations"
on page 138 before
U1253A User's and Service Guide
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