R3132 Series Spectrum Analyzer Operation Manual
2.2.12 Intermodulation
2-48
Figure 2-40 Screen Display Showing Intermodulation Distortion
Changing the attenuator
10. Press LEVEL, ATT AUTO/MNL(MNL), 2, 0 and GHz(dB).
The attenuator level is set to 20 dB.
Under these conditions, the mixer input level is -30 dBm (= -10 dBm - 20 dB),
and spurious peaks (peaks 3 and 4 in Figure 2-40) are not produced.
Figure 2-41 Screen Display without Intermodulation Distortion
The current spectrum has no intermodulation distortion. It is important that the ATT
be adjusted in order to moderate the mixer input when using more than one input.
3
12
4
1
2
3
4
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