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:
Phase
Difference
horizontal graticule
difference x calibration
(divisions) (deg/div)
EXAMPLE. In Figure 3-8, the horizontal difference is 0.6 division
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°.
MEASURE
TIME FROM A TO B
HORIZONTAL
DIFFERENCE
4 2 0 7 - 1 9
Figure 3-8. Phase difference.
2225 Operators
3-13
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