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2-14 85330A Multiple Channel Controller
Performance Verification
Verifying the RF Switches
RF Performance Tests Recall the network analyzer setup that was saved earlier by pressing:
[RECALL] {1}
Perform each of the following tests on each input and output port of the
switch. Check the results of each of the tests against the switch’s
specifications shown in the Agilent 85331A/Agilent 85332A User’s Manual.
1. Connect the test port cable to the first switch port.
2. Close the switch path. This will turn the switch light ON on the switch
control unit.
a. Check the S11 (input match, ON).
b. Check the S22 (output match, ON).
c. Check the S21 (insertion loss, ON).
d. Check the S12 (reverse insertion loss, ON).
e. Document the test results by plotting the display to a plotter or
printer.
3. Open the switch path. This will turn the switch light OFF on the switch
control unit.
a. Check the S11 (input match, OFF).
b. Check the S22 (output match, OFF).
c. Check the S21 (isolation, OFF). Use averaging if required.
d. Check the S12 (reverse isolation, OFF). Use averaging if required.
e. Document the test results by plotting the display to a plotter or
printer.
4. Move the test port cable to the next switch port. Repeat all of the above
until all switch ports are tested.