80
6. To press DISPLAY menu key to call out displa
7. To press F2 to select X-Y. Digital storage
oscillograph will display input/output characteristics of
circuit under Lissa Jous's figure mode
8. To adjust vertical scale and vertical position knob to
reach the best effect for waveform
9. (As shown in following f igure), please observe and
calculate phase location difference by elliptic
oscillograph figure method
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location difference angle between channels. Please
refer to above figure for definition of A, B, C and D.
phase location difference angle is
calculated as follows =±arcsin A B or
±arcsin C D Calculated phase locatio
difference angle shall be within Quadrant I or IV
(namely, (0~ ) or ( ~ ) if main axle of ellipse
is within Quadrant I or III. Calculated value is within
( ~ ) or ( ~ ) if main axle of ellips e is withi
Quadrant II or IV. Additionally, frequency and phas e
location relationship between 2 signals can be
calculated according to figure if frequency or phase
location difference of 2 measured signals is integral
multiple
Operating Manual for UTD2000/3000
Signal must be in the
horizontal center
Figure 3-
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