Rigol MSO8204A Rigol MSO8000A series user guide

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- Set the PLL order

This oscilloscope supports first-order PLL and second-order PLL. Press PLL

Order, and rotate the multifunction knob to select the order number and

then press down the knob to select it. You can also press PLL Order

continuously or enable the touch screen to select it.

- Set the loop BW

Press Loop BW, then rotate the multifunction knob or use the pop-up

numeric keypad to set the loop bandwidth.

- Set the damping factor

When PLL order is set to "2nd Order", you need to set the damping factor. It is

the damping factor of the transfer function. Press DampFactor, then rotate the

multifunction knob or use the pop-up numeric keypad to set the damping

factor.

The typical damping factor is 1.0 and 0.707. The former is critically damped, and

the latter is the ideal or optimal value.

3. Set the External Clock Recovery

Press RecoveryType, and rotate the multifunction knob to select "Explicit", and

then press down the knob to select it. You can also press RecoveryType

continuously or enable the touch screen to select it.

Press Source, then use the multifunction knob to select the desired source, and

then press down the knob to select the source. You can also press Source

continuously or enable the touch screen to select it. The analog channel (CH1-

CH4) can be selected to be the source of the external clock.

13.1.5 To Enable or Disable the Eye Measurement Result

In the "Eye" setting menu, press Result continuously to enable or disable the display

of the eye measurement result. When it is enabled, the statistical results of the eye

measurement data will be displayed at the upper-left corner of the screen, as shown

in the following figure. You can enable the touch screen, and drag the statistical

results to any place where you want to put it for view on the screen.

Real-time Eye Diagram and Jitter Analysis

(Option)

216

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Rigol MSO8204A oscilloscope