Rise Time Response
If a step with a Gaussian shape is applied to the input of the HP 54720, the
measured 10 percent to 90 percent rise time is approximately equal to the
quadrature sum of the rise time of the step and the rise time of the
oscilloscope. The rise time of the HP 54720 depends on which plug-in is used
and on whether real-time or equivalent-time sampling is used. Table 13-1
gives the rise time for various combinations of plug-in and sampling
technique.
Table 13-1
Rise Time Response
Plug-In Real-time
rise time
Repetitive rise
time
HP 54711A *** 233 ps
HP 54712A *** 318 ps
HP 54713A 700 ps 700 ps
HP 54721A 318 ps 318 ps
*** Not recommended for single-shot
Measurements
Time-interval measurements
13–38
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