E4990A Help
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1. Make sure that the adapter selection is set to 4TP 2m. Perform
Adapter Setup if it is not done yet.
2. Perform the fixture compensation in accordance with Fixture
Compensation.
When the measurement port is extended by 2 meter
with the four-terminal pair configuration, neither user
calibration nor port extension compensation is required for
measurement (they cannot be performed).
Other topics about Calibration
D. Exclusive Fixture
When an exclusive test fixture is connected to the 7-mm port of the
42942A Terminal Adapter, which is connected to the four-terminal pair port
of the E4990A, and a device is connected to the test fixture, perform the
calibration procedure described below.
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