126 Chapter 4
Calibration
Full 4-Port Calibration
Step 13. Repeat Step 6 to Step 11 on test port 3.
Step 14. Repeat Step 6 to Step 11 on test port 4.
Step 15. Press Return.
Step 16. Press Transmission.
Step 17. Make a THRU connection between ports 1 and 2 (between the connectors to which the
DUT will be connected).
Step 18. Press Port 1-2 Thru to start the calibration measurement.
Step 19. Repeat Step 17 and Step 18 on ports 1 and 3.
Step 20. Repeat Step 17 and Step 18 on ports 1 and 4.
Step 21. Repeat Step 17 and Step 18 on ports 2 and 3.
Step 22. Repeat Step 17 and Step 18 on ports 2 and 4.
Step 23. Repeat Step 17 and Step 18 on ports 3 and 4.
Step 24. Press Return.
Step 25. If an isolation calibration must be performed using a LOAD standard, follow the procedure
below.
a. Press Isolation (Optional).
b. Connect a LOAD standard to each of the four test ports (connectors to which the DUT
is to be connected).
c. Press Port 1-2 Isol to start the calibration measurement.
d. Press Port 1-3 Isolto start the calibration measurement.
e. Press Port 1-4 Isol to start the calibration measurement.
f. Press Port 2-3 Isol to start the calibration measurement.
g. Press Port 2-4 Isol to start the calibration measurement.
h. Press Port 3-4 Isol to start the calibration measurement.
Step 26. Press Return.
Step 27. Press Done to terminate the full 4-port calibration process. Upon pressing this key,
calibration coefficients will be calculated and saved. The error correction function will also
be automatically enabled. By pressing
Done, previously saved calibration coefficients will
be overwritten with new ones.
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