Correcting For Measurement Errors; Ensuring A Valid Calibration - HP 8753E User Manual

Correcting for Measurement Errors

The Local] key provides access to the correction menu which leads to a series of menus that
implement the error-correction concepts described in this section. Accuracy enhancement
(error-correction) is performed as a calibration step before you measure a test device. When
the
The following softkeys are located within the correction menu:
n

Ensuring a Valid Calibration

Unless interpolated error-correction is on, measurement calibrations are valid only for a
specific stimulus state, which must be set before a calibration has begun. The stimulus state
consists of the selected frequency range, number of points, sweep time, output power, and
sweep type. Changing the frequency range, number of points, or sweep type with correction
on invalidates the calibration and turns it off. Changing the sweep time or output power
changes the status notation Cor at the left of the screen to C?, to indicate that the calibration
is in question. If correction is turned off or in question after the stimulus changes are made,
pressing ~~~~~:~~:~~, #$~ recalls the original stimulus state for the current calibration.