1- 97
Making Measurements
Using Bandwidth Limits to Test a Bandpass Filter
The test displays a message in the upper left corner of the graticule showing that the bandwidth test is
being performed and the channel on which the test is being performed. For example, BW1: indicates that
the bandwidth test is being run on channel 1. See
Figure 1-76.
The test also displays a message indicating whether the filter passes or fails the bandwidth test. When
the filter is passing the test, the message indicates Pass. When the filter is failing the test, the failure
message indicates either Wide (when the pass band is wider than the maximum bandwidth input) or
Narrow (when the pass band is narrower than the minimum bandwidth input).
When the filter passes the bandwidth test, the color of the bandwidth test Pass message is green. When
the filter fails the bandwidth test, the color of the bandwidth test Wide/Narrow message is red.
Figure 1-76 Filter Pass Band with Bandwidth Test Activated
Displaying the Bandwidth Markers
1. Display the bandwidth markers by pressing the softkey until ON is displayed
on the softkey.
When the bandwidth markers are displayed, a marker is placed on each side of the peak amplitude at a
position equal to the N dB Points value below the peak. The markers are placed at the 40 dB points on
the signal in Figure 1-77. The bandwidth markers resemble the following symbol: T
To Next Page
Loading...
Need help?
General
