![Keysight U1401B User'S And Service Manual Download Page 141](http://html.mh-extra.com/html/keysight/u1401b/u1401b_users-and-service-manual_1961437141.webp)
Performance Tests and Calibration
7
Keysight U1401B User’s and Service Guide
141
Other recommendations for calibration
Specifications are only guaranteed within the specified period from the last
calibration. Keysight recommends that readjustment should be performed during
the calibration process for best performance. This will ensure that the Handheld
Multi-Function Calibrator/Meter 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 the functions which need adjustment.
Environmental conditions
Calibration or verification tests should be performed under laboratory conditions
where the ambient temperature or relative humidity can be controlled.
Warm up
Allow at least 20 minutes for the intrument to warm-up before performing
calibration. After being exposed or stored in a high humidity (condensing)
environment, a relatively longer recovery period is required.