Keysight Technologies X Series Service Manual page 660

Functional Tests
Scale Fidelity
7. On the analyzer, press the Single, Restart to trigger a 10 sweep average.
8. On the analyzer, activate the Marker Delta function by pressing Peak
9. Perform the following steps for each attenuator setting listed in the table
660
Search, Marker Delta.
below:
a.Select the next External attenuator setting.
b.Press the Restart key to trigger a 10 sweep average.
c.Enter the delta marker value into
d.Check delta marker reading against the test limits.
Table 17-8.
Keysight N9010A EXA Service Guide