R3131 Spectrum Analyzer Operation Manual
2.2.11 Harmonic Distortion
9. Press LEVEL, A77' AUTO/MNL, 3, 0 and GHz (dB).
The attenuator level is set to 30 dB.
ADVANTEST R3131
REF 0.0 dBm
10dB/
ATT
30dB
Thu 11 Dec 1997Level
*ATT 30dB A_wrt B_blnk
Norm .14°7 Ref Level
ATT
'AUTO /MNL
CENTER 300.0 MHz SPAN 500 MHz
*RBW 10 kHz VBW 10 kHz SWP 10 s
dB/div ▶
Linear
Ref--
Offset
ON /OFF
Figure 2-45 Screen Display Showing Reduced Harmonic Distortion
Under these conditions, the input level for the mixer is -30 dBm, and the true
spectrum can be observed.
2-51
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