The Siglent SHN900-SA is the spectrum analysis option for SHN900A vector network analyzers.

The spectrum analysis mode supports the measurement of parameters such as channel power, adjacent channel power ratio (ACPR), and occupied bandwidth. Marker → SA supports a quick view of the spectrum at specific frequency points of the S-parameters, making signal search and analysis more convenient. Simple and clear setup boxes make the testing process simpler, and a series of standardized, repetitive measurements can be performed quickly and easily without error, helping to eliminate human error and supporting the user in making the right measurements from the start.

For more information on this option, including operating instructions, please see the document linked here beginning of page 192 (PDF page 194).