Fluke 125 User Manual page 46

Fluke 125
Users Manual
Making Rise Time Measurements
To measure rise time, do the following:
From Scope mode, display the
Cursor Key functions.
Press to highlight
Observe that two horizontal
cursors are displayed.
If only one trace is displayed,
select MANUAL or AUTO. AUTO
automatically does steps 4 to 6.
For multiple traces select the
required trace A or B.
Move the upper cursor to 100% of
the trace height. A marker is
shown at 90%.
Highlight the other cursor.
Move the lower cursor to 0% of
the trace height. A marker is
shown at 10%.
2-24
(rise time).
The reading now shows the risetime from 10%-90% of the
trace amplitude and the voltage at the cursors in relation to
the zero icon (-). See Figure 2-20.
Figure 2-20. Risetime Measurement with Cursors
Turn off the cursors.