E4990A Help
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4. Perform the fixture compensation at the device contacts (electrodes)
of the fixture. See Fixture Compensation for the fixture compensation
procedure.
When an exclusive test fixture is connected to the 7-
mm port of the 42942A which is also connected to the four-
terminal pair port of the E4990A, port extension compensation
is not required.
Other topics about Calibration
E. 42942A, 7-mm Port Extension
Perform the following calibration when the 7-mm port of a 42942A
connected to the E4990A is extended with a one-port configuration and the
device is connected to the cable’s end with a minimal connection.
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