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I am in process of taking "Spectrum Analysis Fundamentals" Keysight online course. In the slide below, marker frequency is mentioned. What is that exactly? I cannot find a good definition online.

Marker Frequency

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  • \$\begingroup\$ It's equivalent to the cursors on a oscilloscope. Just a way to mark/measure a point on the graph. \$\endgroup\$
    – Aaron
    Sep 14 at 13:35
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A marker is a symbol placed on the screen of the spectrum analyzer used to highlight a frequency component of interest. Its frequency is accurately measured by the analyzer. This allows precise determination of frequencies of interest such as modulation rates, harmonics, etc.

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