R3267 Series Spectrum Analyzer Operation Manual (Vol.1)
2.3.10 Third Order Intermodulation Distortion
2-115
Setting the measurement conditions
This changes the analyzer settings so that the input signal is displayed more clearly.
5.
Press FREQ, 1, 0, 0, ., 5 and MHz.
A center frequency of 100.5 MHz is set.
6.
Press SPAN, 5 and MHz.
A frequency span of 5 MHz is set.
7.
Press LEVEL, 1, 0 and GHz(+dBm).
The reference level is set to +10 dBm.
8.
Press ATT, ATT AUTO/MNL(MNL), 3, 0 and GHz(dB).
The attenuator is set to 30 dB.
NOTE:
Set the attenuator to ’input level + 10 dB’ or more to avoid the saturation at
the input mixer.
9.
Press COUPLE, RBW AUTO/MNL(MNL), 1, 0 and kHz.
An RBW of 10 kHz is set.
10. Press SWP, Sweep time AUTO/MNL(MNL), 1, 0, 0 and kHz(ms).
Sweep time is set to 100 msec (See Figure 2-129).
Figure 2-129 Third Order Intermodulation Distortion
Adjusting the reference level
11. Press SRCH.
The normal marker is displayed on the trace peak.
12. Press MKR
→
→
→
→
and Marker
→
→
→
→
Ref.
The reference level is set to the peak of the trace (See Figure 2-130).
