Performance Tests and Calibration 6
U1253B User’s and Service Guide 137
Calibration interval
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.
Other recommendations for calibration
Specifications are only guaranteed within the specified
period from the last calibration. Agilent recommends that
readjustment should be performed during the calibration
process for best performance. This will ensure that the
U1253B true RMS OLED multimeter remains within its
specifications. This calibration criterion provides the best
long- term stability.
During performance verification tests, only the performance
data is collected; these tests do not guarantee that the
instrument will remain within the specified limits. The tests
are only for identifying which functions need adjustment.
Please refer to the section “Calibration count” on page 170
and verify that all adjustments have been performed.
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