Electrical Delay - HP 8712ES User Manual

Optimizing Measurements
Compensating for Phase Shift in Measurement Setups

Electrical Delay

Another type of reference plane extension is Electrical Delay ,
accessible from the key. Electrical delay lets you add delay to
SCALE
your current measurement to compensate for phase shift. To flatten the
phase response at a certain frequency, use
MARKER
Marker Functions Marker -> Elec Delay . This automatically
adjusts the electrical delay to compensate for the phase slope at the
active marker position.
Electrical delay is commonly used in transmission measurements to
measure a device's electrical length, or to remove phase slope to measure
deviation from linear phase.
Unlike port extension, electrical delay does not automatically adjust the
applied delay when you switch between transmission and reflection
measurements. For this reason, port extensions are preferred over
electrical delay for fixture compensation or when measuring one-port
devices.
Reference plane extension only affects measurements using the
NOTE
narrowband detectors.
5-20 ES User's Guide