Tektronix WCA200A, User Manual

Page: 249 / 454

Setting Frequency and Span
WCA230A & WCA280A User Manual
3- 123
Using the Marker and Peak Search
You can use the search function to position the marker on the spectrum peak and
then set the center frequency to the frequency at the marker, as shown in
Figure 3--84.
In S/A Mode.
You can set the peak spectrum to the center frequency using the
marker search functions when the measurement mode is S/A (spectrum analysis).
1. Display the spectrum on the screen.
2. Press the PEAK key on the front panel. The maximum peak spectrum is
detected and the marker is moved to that point.
Use the arrow keys (
A " Y B
) to move the marker to another peak.
3. Press the MARKER ➡ key and then the Center Freq = Marker Freq side
key. The center frequency is set to the frequency at the marker position.
Center Freq = Marker Freq
Center frequency
Figure 3- 84: Setting the center frequency using MARKER ➡
The frequency set in this procedure may not take effect with all span settings.
Refer to Frequency Setting Range on page 3--124.
In Demod and Time Modes.
The MARKER ➡ key is used to set the analysis range
when the measurement mode is Demod or Time (modulation and time analyses).
Refer to Setting the Analysis Range on page 3--30 for details.
In the overview of spectrogram or the subview of spectrum, you can use the
Center Freq = Marker Freq side key as in the S/A mode described above.