Making Basic Measurements Using Spectrum Analyzer Mode

Identifying Distortion Products Using the RF Attenuator and Traces

SCALE

LOG IIN

INT AMP

ON OFF

WA VB

SC FS

COW

Figure 4-21. RF Attenuation of 10 dB

6.Compare the response in trace A to the response in trace B. If the distortion product decreases as the attenuation increases, distortion products are caused by the spectrum analyzer’s input mixer.

The change in the distortion product is shown by the marker-delta value. The high-level signals causing the overload conditions must be attenuated to eliminate the interference caused by the internal distortion.

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