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Chapter 4 165

Calibration

Adapter Characterization

4. Calibration

Execution procedure of characterization for test fixture using probe

The adapter characterization function also lets you obtain the characteristics of a test

fixture that is inserted between the instrument and a DUT that cannot be connected directly

to the instrument. In this case, a probe is used, and the obtained characteristics are saved to

a 2-port Touchstone file. The obtained result can be eliminated by using the network

de-embedding of the fixture simulator function, which permits measurement by

eliminating the effect of the test fixture.

NOTE For more information on test fixture characterization using a probe, see Product Note

E5070/71-4.

1. Setting Stimulus Conditions

Set the stimulus condition of the channel for which you will execute the test fixture

characterization.

2. Performing Calibration

Perform 1-port calibration for the probe in the channel for which the stimulus condition has

been set.

3. Starting VBA Macro

Start the VBA macro to display the Adapter Characterization screen (Figure 4-41).

4. Selecting Channel

Select the channel for which calibration has been performed (2 in Figure 4-41).

5. Setting Characterization

Step 1. Press

Setup (3 in Figure 4-41) to display the Setup dialog box (Figure 4-42).

Step 2. Make the setting of the calibration kit used in Cal Kit 1 (1 in Figure 4-42).

Step 3. Enter the Delay of the test fixture (3 in Figure 4-42).

Step 4. Enter a comment about the test fixture (4 in Figure 4-42). This comment is added to the

comment line at the beginning of the Touchstone file.

Step 5. Check the box to the left of Swap ports while saving (5 in Figure 4-42) to align the

direction when specifying a file in the network de-embedding function.

Step 6. Check the box to the left of One-sided measurement Only (6 in Figure 4-42).

Step 7. Press

Close (7 in Figure 4-42) to close the Setup dialog box.

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