Specifications

4
Press the
Rise Time
softkey.
The oscilloscope automatically measures the rise time of the signal and
displays the result on the display.
Automatic Measurements
The oscilloscope makes automatic measurements on the first displayed event.
The following figure shows how to use delayed sweep to isolate an edge for a
rise-time measurement.
Isolating Edge for Rise-Time Measurement
5
To measure the fall time, press the
Fall Time
softkey.
Rise Time and Fall Time Measurements
Rise-time and fall-time measurements do not work on digital channels on
HP 54645D.
Figure 5-23
Making Measurements with HP 54645A/D Oscilloscopes
To make time measurements automatically
5-30