In Spectrum Analyzer mode, press Shift then Measure (4) and select a smart one‑button measurement using the submenu keys. The Spectrum Analyzer Measurement Guide includes a Field Measurements section about smart measurements, which states:

In Spectrum Analyzer mode, smart one‑button measurements are built‑in for field strength, occupied bandwidth, channel power, adjacent channel power ratio, and carrier to interference ratio (C/I) tests. In addition, AM/FM/SSB demodulation is available to aid in the identification of interfering signals.