Measurement
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1. Make sure that the adapter selection is set to 42942A
Extension. Perform Adapter Setup if it is not done yet.
2. Perform the user calibration at the other end of the extended 7-mm
port of the 42942A Terminal Adapter. You can use either the
calibration kit supplied or a user-defined calibration kit. See User
Calibration for the user calibration procedure.
3. Set the port extension value in electrical length or delay time, which
is equivalent to the electrical length between the user calibration
plane and the device contacts of the test fixture, in accordance with
Port Extension Compensation.
In measurements using the E4990A, the electrical
length (delay time) of a 42942A dedicated test fixture (such as
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