Other topics about Data Analysis
The bandwidth search is a function for determining the bandwidth of the trace, center frequency, cut-off points (on the higher frequency and the lower frequency sides), Q, and insertion loss, based on the position of the active marker . The definitions of the parameters determined through the bandwidth search are shown in below.
|
Bandwidth Parameter |
Definition |
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Insertion loss (loss) |
The measured value of the position of the active marker at the time the bandwidth search is executed. |
|
Lower frequency cut-off point (low) |
Lowest frequency of two measurement points, both separated by the defined bandwidth value from the active marker position. |
|
Higher frequency cut-off point (high) |
Highest frequency of two measurement points, both separated by the defined bandwidth value from the active marker position. |
|
Center frequency (cent) |
Frequency at the midpoint between the lower frequency cut-off and higher frequency cut-off points. (high+low)/2 |
|
Bandwidth (BW) |
The difference in frequency between the higher frequency cut-off and lower frequency cut-off points. (high-low) |
|
Q |
Value obtained by dividing the center frequency by the bandwidth.(cent/BW) |
Place the active marker at the desired point on the trace on which the bandwidth search is executed. The response value of this active marker itself is the insertion loss in the bandwidth search (loss).
Press Marker Search key.
Click Bandwidth Value and enter the defined bandwidth value in the entry area that appears.
Click Bandwidth to turn on the bandwidth search. In the upper left of the trace display, six bandwidth parameters are displayed.
Bandwidth search results
