24 | Keysight | N9038A MXE EMI Receiver Self-Guided Demonstration - Demo Guide
Trace zoom
Trace zoom in spectrum analyzer mode allows you to view close-up and full-span 
spectrum simultaneously in two separate windows. This is useful for looking into the 
details of high-density signals by zooming into a sub-band of a wide span.
In this demonstration, we will use the trace zoom function look more closely at a signal 
and peak search in the zoom span only.
Trace Zoom Demo Instructions for MXE Keystrokes
Turn on trace zoom [View/Display], {Trace Zoom}
Move zoom block around the signals of 
interest
Change zoom span to focus on the signals of 
interest only
Put a marker on the signal of interest 
Observe the signals in both windows
Figure 22. Trace zoom
Did you know?
Zone span is different from trace 
zoom. Zone span can set different 
RBW, VBW, and sweep times for 
signals with only one active window. 
Trace zoom makes two windows 
active simultaneously and requires 
that both windows use the same 
bandwidths and sweep times.