Applications
10. Measure the horizontal difference between corresponding
points on the two waveforms at the 50% rise-time points and
calculate the phase difference using the following formula:
horizontal
graticule
Phase
_
difference
x
calibration
Difference
(divisions)
(deg/div)
EXAMPLE. In Figure 3 -8 , the horizontal difference is 0 .6 divi
sion with a graticule calibration of 45 ° per division.
Substituting the given values into the phase-difference formula:
Phase Difference = 0 .6 div x 45°/div = 27°.
CHANNEL 1
CHANNEL2
MEASURE
TIME FROM A TO B
HORIZONTAL
DIFFERENCE
Figure 3 -8 . Phase difference.
2205 Operator’ s
3-15
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