User`s guide

4 Making Measurements
62 N9340B User’s Guide
Measuring Return Loss Using the Reflection
Calibration Routine
This procedure uses the reflection calibration
routine in the previous procedure “Making a
Reflection Calibration Measurement" on page 59, to
calculate the return loss of the 370 MHz low- pass
filter.
1 After calibrating the system with the above
procedure, reconnect the filter in place of the
short (cal device) without changing any analyzer
settings.
2 Use the marker to read return loss. Position the
marker with the front-panel knob to read the
return loss at that frequency.
Rotate the knob to find the highest peak and
the readout is the maximum return loss.
Figure 4-22 Measuring the Return Loss of the Filter