Instruction manual

Chapter 6 149
Calibration and Compensation
Registering the Electrical Length of Unregistered Test Fixtures
6. Calibration and
Compensation
Registering the Electrical Length of Unregistered Test
Fixtures
For the 4287A, the electrical lengths (from 7-mm terminal to DUT connection plane) of the
test fixtures 16191A, 16192A, 16193A, 16194A, 16196A, 16196B, and 16196C 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.
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.
NOTE For how to perform the instruction “press the key (softkey) in the softkey menu”
mentioned in the procedure, see “13. Softkeys” on page 87.
Step 1. Press the [Cal/Compen] key on the front panel to display the Cal/Compen softkey menu.
Step 2. Press the SETUP USER FIXTURE key in the softkey menu to display the SETUP USER
FIXTURE softkey menu.
Press the ELEC. LENGTH [ ] key in the softkey menu to display the Electrical Length
dialog box.
Figure 6-21 Electrical Length dialog box
Step 3. Enter the electrical length in the input box.
Step 4. Press the LABEL KIT [ ] key in the softkey menu to display the User Fixture Label dialog
box.