N2808A Datasheet, PDF (9/13 Pages) Keysight Technologies – PrecisionProbe for the 9000 Series

09 | Keysight | N2808A PrecisionProbe for the 9000 Series - Data Sheet
Conclusion
Using PrecisionProbe provides the highest level of accuracy
without requiring additional equipment. PrecisionProbe will help
with accuracy by doing the following:
–– Removing insertion loss caused by cables
–– Characterizing the impedance of your probe
–– Removing probe to probe variation
–– Correcting for loss and non-linearities in custom probes
–– Correcting for solutions such as switch matrices
Figure 15. Real time eye with uncorrected cable loss
Figure 16. Real time eye with corrected cable using PrecisionProbe,
notice that by correcting for cable loss there is a gain of 37mV in the eye
height measurement!