Agilent Technologies 20ET ユーザーズマニュアル
1-92
Making Measurements
Using Bandwidth Limits to Test a Bandpass Filter
Using Bandwidth Limits to Test a Bandpass Filter
The bandwidth testing mode can be used to test the bandwidth of a bandpass filter. The
bandwidth test finds the peak of a signal in the passband and locates a point on each side
of the passband at an amplitude below the peak (that you specify during the test setup).
The frequency between these two points is the bandwidth of the filter. This bandwidth is
compared to minimum and maximum allowable bandwidths that you specify during the
test setup.
bandwidth test finds the peak of a signal in the passband and locates a point on each side
of the passband at an amplitude below the peak (that you specify during the test setup).
The frequency between these two points is the bandwidth of the filter. This bandwidth is
compared to minimum and maximum allowable bandwidths that you specify during the
test setup.
This example shows you how to test the bandwidth of a bandpass filter. In this example,
we will be testing the pass band of a bandpass filter where the center frequency of the
filter is approximately 321 MHz. Refer to
we will be testing the pass band of a bandpass filter where the center frequency of the
filter is approximately 321 MHz. Refer to
Figure 1-71 Bandpass Filter Being Bandwidth Tested
Setting Up Bandwidth Limits
When you set up the bandwidth limits to test the bandpass filter, you will first set up the
analyzer to perform the bandwidth test and then you will set up bandwidth limits of the
bandwidth test.
analyzer to perform the bandwidth test and then you will set up bandwidth limits of the
bandwidth test.
Setting Up the Analyzer to Perform the Bandwidth Test
This section sets up the analyzer so that a bandpass filter can be easily viewed on the
analyzer display.
analyzer display.
1. Connect your filter as shown in