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S21 Operation (Two-port units only)
Two port or S21 operation is used if you are testing a two-port device, such as a filter or an
attenuator. Calibration is also required in this case, and it is very similar to the procedure used for the
single-port measurement.
Enter the frequency....
Select S21 from the sweep type box...
Do Open-short-load, same as for S11....
Then do Thru-- punch the S21 cal button...Show dialog.
Hit Plot....INSERT PIX
Naming Your Chart
Each chart displayed on the screen has a default header, describing the measurement displayed. The
default heading for the SWR chart is “SWR Plot”, for example.
Any chart can be renamed by simply double-clicking on the title you wish to change, and this dialog
will pop up, allowing you to make whatever changes you want.
If you have more than one chart displayed, you will be given the opportunity to choose which chart
you want to label:
Select the chart, and type in the new header at the bottom, click OK to save.
If you only have one chart showing, this dialog box will be displayed:
Enter the new caption, and click OK.
