Applications
More accurate phase measurements can be made by using the
horizontal magnifier function to increase the sweep speed without
changing the SEC/DIV variable control setting. To do this, set the
HORIZONTAL MODE switch to MAG and set the MAG switch to
either X5, XI0, orX50.
If the sweep speed were increased 10 times (MAG set to X10), the
magnified horizontal graticule calibration then would be 4.5° per
division (45°/division divided by 10). Figure 3-9 shows the same
signals illustrated in Figure 3-8, but horizontally magnified by a
factor of 10.
EXAMPLE. In Figure 3-9 the 10X magnified display results in a
horizontal difference of six divisions between the two signals.
Substituting the given values into the phase difference formula:
Phase Difference = 6 div x 4.5°/div = 27°.
3-14
2225 Operators
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