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Examples<br />

Tutorial—High Impedance Fault Detection of a PLL Circuit<br />

You can see from the list (highlighted in yellow) several high impedance detections on<br />

the same node, XPLL.XCPF.INVCO, but for different time windows.<br />

9. To plot the evolution of this impedance with regards to the simulation time, edit the<br />

main netlist file HiZ_PLL.cir in your preferred text editor, and uncomment the following<br />

line in the netlist:<br />

.plot tran IMP(xpll.xcpf.invco)<br />

Add the following plot commands:<br />

.plot tran V(xpll.down)<br />

.plot tran V(xpll.up)<br />

Rerun the simulation in Eldo:<br />

<strong>eldo</strong> HiZ_PLL.cir<br />

10. After the simulation is complete, launch EZwave and open the generated output file<br />

HiZ_PLL.swd:<br />

ezwave HiZ_PLL.swd<br />

The following waveforms are displayed: IMP(XPLL.XCPF.INVCO),<br />

V(XPLL.DOWN), V(XPLL.UP):<br />

1364<br />

Eldo® User's Manual, 15.3

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