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of scanning points of the test.)
Fig. 6.15 Setting of Smoothing
6.6.3.
Intermediate Frequency Bandwidth
You can reduce the bandwidth of the IF receiver so as to reduce the influence of random noise in measurement. Once the IF
bandwidth is reduced by 10 times, the base noise will be reduced by 10dB. However, if the IF bandwidth is small, the sweep time will
be long. The signal received by the analyzer will be changed into the IF (7.606MHz) from the network analyzer can change the
received signal from the RF/microwave frequency into the IF (7.606MHz). The bandwidth of the IF band pass filter can be reduced
from 5MHz to 1Hz (min.). The IF bandwidth can be independently set for each channel or in segment sweep.
1) Reduction of influence of IF bandwidth
The influence of the IF bandwidth on measurement results is shown in Fig. 6.16.
Fig. 6.16 Influence of Intermediate Frequency Bandwidth on Measurement Results
2) Setting of IF bandwidth
Menu path: [Response] > [Average] > [Intermediate frequency bandwidth...].
Directly enter the value in the [Intermediate frequency bandwidth] dialog box or select the value with the arrow button.
Fig. 6.17 Setting of Intermediate Frequency Bandwidth
