B&K Precision 2532B - Manual - Manual (Page 138)

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Figure 70 - Language Selection Screen
Self Calibration
Self Calibration procedure can optimize the signal path at the most
measurement precision. You can run this procedure at any time. If the
operating temperature changes by more than 5° C or the units run more
than thirty minutes, you should do the self calibration.
When you run the self Calibration, you should disconnect all the
probes and leads, and make sure the scope is not in Single-Shot mode.
Then press the “Utility” button to choose the “Do self cal” to show the
self Calibration Menu, and execute self calibration program according
to the prompt on the screen.