Applications
6 7 1 7 - 0 9
Figure 3 -6 .
Measuring rise time.
NOTE
You can achieve better accuracy by using the
SEC/DIV control, or horizontal magnification, to
expand the waveform transition so that it occupies
from four to six horizontal divisions between the
10% and 90% amplitude points.
5. Measure the horizontal distance between the 10% and 90%
points (Figure 3 -6 , Points A and B) and calculate time dura
tion using the following formula:
horizontal
SEC/DIV
distance
x
control
Rise
_
(divisions)
setting
Time
“
— ;---- ' --------------
magnification factor
EXAMPLE. In Figure 3 -6 , the horizontal distance between the
10% and 90% amplitude points is 5 divisions, and the SEC/DIV
switch is set to 1 ps per division. HORIZONTAL MAG is set to
X I.
2205 Operator’ s
3-11
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