HP 54753A User Manual page 224

Figure 10-13
Basic system frequency response
Figure 10-14
Normalized system frequency response (system bandwidth reduced)
Improving Time Domain Network Measurements
Removing Measurement Errors
In the HP 54750A Series digitizing oscilloscopes with TDR capability, the user-
specified risetime determines the bandwidth of the filter. Decreasing the
bandwidth is accomplished by attenuating the frequencies that are beyond the
bandwidth of interest (Figure 10-14). Increasing the bandwidth requires more
consideration.
10-18