Tektronix 2205

Applications
6717-09
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 ^ control
Rise _ (divisions) setting
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 )xs per division. HORIZONTAL MAG is set to
X1.
2205 Operator’s
3-11