5-6
Optimizing Measurement Results
Increasing Measurement Accuracy
You can activate a port extension by pressing
. Then enter the delay to the reference plane.
Table 5-2 Differences between PORT EXTENSIONS and ELECTRICAL DELAY
PORT EXTENSIONS ELECTRICAL DELAY
Main Effect The end of a cable becomes the
test port plane for all
S-parameter measurements.
Compensates for the electrical
length of a cable. Set the
cable’s electrical length × 1 for
transmission. Set the cable’s
electrical length × 2 for
reflection.
Measurements Affected All S-parameters. Only the currently selected
S-parameter.
Electrical Compensation Intelligently compensates for
1 times or 2 times the cable’s
electrical delay, depending on
which S-parameter is
computed.
Only compensates for
electrical length.
Cal
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