80
6. To press DISPLAY menu key to call out display
control menu.
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 figure), 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.
Therefore, phase location difference angle is
calculated as follows
=±arcsin
A B
or
±arcsin
C D
Calculated phase location
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 ellipse is within
Quadrant II or IV. Additionally, frequency and phase
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 3-7
3
2
2
2
2
3
2
