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Adjust 90% point to the center
N and measure D.
pea
t-—-D,-t+—D,—)
Adjust 10% point
}-+—_____-—-+4
to the center and
Rise time
measure D,.
Fig. 31
{EXAMPLE}
For the example, the measured D, is 1 .6 divisions while
Dz
is 1.4 divisions. If SWEEP TIME/DIV is 2 ps/div we use the
following relationship. (See Fig. 31)
Measured value
4 REF cursor
A cursor
Fig. 32
(1) Ordinary measurement
Phase difference between two sine waves of the same fre-
quency, etc. can be measured as follows:
Procedure:
Using the formula:
Phase difference
= Horizontal distance (div) x45 °/div
1 cycle
|_--—-
Reference signal
Comparison
signal
Phase difference
fig. 33
[EXAMPLE]
For the example, the horizontal distance is 1.7
divisions.
(See Fig. 33)
Substituting the given value:
The phase difference
= 1.7 (div)
x 45°/div=/5. 5°
27
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