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Viewing an rms plot, Viewing a frequency plot, Viewing a spectrum chart – SATEC PM180 Operation Manual User Manual

Page 145

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‎Chapter 14 Viewing Log Files

Viewing Waveforms

PM180 Substation Automation Unit

143

Viewing an RMS Plot

PAS can show you a cycle-by-cycle RMS plot of the sampled AC waveforms. To
open the RMS view, click on the

button. The graph shows the RMS points

updated each half cycle.

Viewing a Frequency Plot

To view a cycle-by-cycle frequency plot of the sampled voltage waveforms, click on

the

button.

Viewing a Spectrum Chart

Click on the

button to view a spectrum chart for the selected waveform channel.

To change a channel, click on the window with the right mouse button, select
“Channels...”, check the channel you want displayed, and then click OK. PAS
provides voltage, current, active power and reactive power spectrum charts.
A spectrum is calculated over four cycles of the waveform beginning from the point
where the left marker line is located in the open waveform view. If both waveform
views are open, PAS gives the priority to the overlapped waveform view.