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Frequency Sweep (External Coupler) Mode
13.Select the Cursor 1 check box to activate the cursor, and then set the cursor
to the IF filter’s center frequency of 10.7 MHz by entering 10.7 MHz in the
respective box of the cursor spreadsheet.
Result: The VSWR of the IF filter at its center frequency is 1.012. The
impedance graph shows an impedance of 50.59 Ω and due to the very small
positive phase shift a nearly pure resistive behavior.