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Press [Peak] and [Marker→Center].
d) Set the span as 50MHz and reset the center frequency.
Press [frequency], [Span] and 50[MHz].
Press [Marker→] and [Marker→Center].
e) Set the attenuator as 0dB.
Press , [Atten Auto Man] and 10[dB].
Press [Peak] and [Peak Track Off On].
Press [Maker] and [Delta].
Fig. 4-12 Observation of Harmonic Distortion
f) Increase the attenuator setting to 10dB:
Press [Atten Auto Man] and 10[dB].
Observe the differential marker reading, as shown in Fig. 4-13. The reading is the distortion difference of the
attenuator at 0dB and 10dB. If the attenuator is changed and the differential marker reading is 1dB or more, it
indicates that the spectrum analyzer is subject to certain distortion. If the differential marker reading is not obvious,
the attenuation may be increased.
