HP 8753E manual Correcting for Measurement Errors, Ensuring a Valid Calibration

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 (ETJ key is pressed, the correction menu is displayed.

The following softkeys are located within the correction menu:

8

n

8

8

8

8

8

8

8

8

8

8

8

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.:f...If:: correction is turned off or in question after the stimulus changes are made, -................ ::.

pressing ~~~~~:~~:~~, #$~ recalls the original stimulus state for the current calibration.

6-76 Application and Operation Concepts