Rigol MSO/DS2000A Series Manual de usuario Pagina 70

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RIGOL Chapter 3 To Set the Horizontal System
3-4 MSO2000A/DS2000A Users Guide
Time Base Mode
Press MENU in the horizontal control area (HORIZONTAL) at the front panel and
then press Time Base to select the time base mode of the oscilloscope and the
default is Y-T.
Y-T Mode
In this mode, the Y axis represents voltage and the X axis represents time.
Note: Only when this mode is enabled can Delayed Sweepbe turned on. In this
mode, when the horizontal time base is greater than or equal to 200 ms, the
instrument enters slow sweep mode. For the details, please refer to the introduction
of slow sweep in Roll Mode.
X-Y Mode
In this mode, the oscilloscope changes the two channels from voltage-time display
mode to voltage-voltage display mode. Wherein, the X axis and Y axis tracks the
voltages of CH1 and CH2 respectively. The phase deviation between two signals with
the same frequency can be easily measured via Lissajous method. The figure below
shows the measurement schematic diagram of the phase deviation.
Figure 3-2 Measurement Schematic Diagram of Phase Deviation
II I
III IV
A
B
C
D
The signal must be
centered horizontally
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