5-32
Figure 5-33.—Vswr test for receiving antennas.
Q-12.
What precautions must be taken when sweeping a transmitting antenna?
SUMMARY
This chapter has presented information on waveform interpretation. The information that follows
summarizes the important points of this chapter.
Interpretation of a waveform is best accomplished with test equipment that gives you a visual
indication of the waveform. The most common devices used in systems applications are
OSCILLOSCOPES and SPECTRUM ANALYZERS.
An amplitude-modulated signal can be tested with either an oscilloscope or a spectrum analyzer to
determine its percentage of modulation, sideband characteristics, and carrier frequency. Frequency-
modulated signals are normally tested with a spectrum analyzer or a modulation analyzer.
