40 Chapter 2
Quick Start: Learning How to Make Measurements
Learning to Make Transmission Measurements
Measuring Passband Flatness or Ripple.
Figure 2-7 Example Measurement of Passband Flatness or Ripple
Passband flatness (or ripple) is the variation in insertion loss over a specified portion of the
passband.
Continue with the following steps to measure passband flatness or ripple.
1. Press
Save/Recall, RECALL STATE to recall the error-corrected transmission measurement
that has no markers engaged.
2. Press Marker and turn the front panel knob to move marker 1 to the left edge of the
passband.
3. Press ∆MODE MENU, ∆ REF=1 to change the marker 1 position to the delta reference point.
4. Press
MARKER 2 and turn the front panel knob to move marker 2 to the right edge of the
passband.
5. Press Marker Fctn, MKR MODE MENU, STATS ON.
The analyzer calculates the mean, standard deviation, and peak-to-peak variation
between the ∆ reference marker and the active marker, and lists the results in the
upper-right corner of the display. The passband ripple is automatically shown as the
peak-to-peak variation between the markers.
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