Performing Port Extension Compensation
(Fixture Selection)

• Selecting Registered Test Fixtures

• Registering the Electrical Length of Unregistered Test Fixtures

Other topics about Calibration and Compensation

Selecting Registered Test Fixtures

For the E4982A, the electrical lengths (from 7-mm terminal to DUT connection plane) of the test fixtures 16191A, 16192A, 16193A, 16194A, 16196A, 16196B, 16196C, 16196D and 16197A are registered in advance. When you use the tip of the 7-mm terminal of the test head as a calibration reference plane and connect any of these test fixtures to the tip, you can execute port extension compensation by selecting the test fixture model number.

1. Press Meas Setup.
   

2. Click Fixture and select your desired fixture model number None|16191A|16192A|16193A|16194A|16196A|16196B|16196C|16196D|16197A.

3. The Fixture softkey in the Meas Setup menu is for the compensation function only. When the calibration and Compensation Wizard is used, you need to select your desired fixture in the Cal/Comp Wizard setting dialog box.

Registering the Electrical Length of Unregistered Test Fixtures

When you want to connect an unregistered test fixture of our manufacture or your own test fixture and cables to the tip of the calibration reference plane, it is necessary to perform the following steps to register the name and electrical length of the device before starting calibration and compensation.

1. Press Meas Setup.

2. Click Fixture and select a user (User 1|User 2|User 3|User 4|User 5|User 6|User 7|User 8) fixture to activate the Label and Length softkeys.

3. Click Label and enter a name for the newly registered test fixture.

   • If you do not have an external keyboard attached, you can use the on-screen keyboard.

4. Click Length and enter the electrical length.