HP 54710A User's Reference Manual page 89

Calibration Overview
This section briefly explains the calibration of the HP 54720 and
HP 54710 oscilloscopes. It is intended to give you or the calibration
lab personnel an understanding of the various calibration levels
available, and how they were intended to be used. Also, this section
acquaints you with the terms used in this manual, the help screens,
and the data sheet as they apply to calibrating the oscilloscope.
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