Chapter 7 Monitoring Meters
Viewing Real-time Waveforms
EM720 Power Quality and Revenue Meter
You can save retrieved data to a file or print it in the same
manner as described in the previous section.
To retrieve real-time waveforms from your meter, check
the On-line button
device site from the list box on the toolbar, and then
select RT Waveform Monitor from the Monitor menu.
Use the Poll button
Continuous poll
continuous polling, click on the Stop button
PAS normally retrieves seven 4-cycle AC waveforms (V1-
V3 and I1-I4) sampled at a rate of 128 samples per cycle.
If you wish to get only selected phases, select "Options"
from the Tools menu, click on the Preferences tab, check
the phases you want polled, and then click OK.
Retrieved waveforms can be displayed in different views
as overlapped or non-overlapped waveforms, as an RMS
cycle-by-cycle plot, or as a harmonic spectrum chart or a
table.
See
Viewing
information on using different waveform views.
Viewing Real-time Waveforms
on the PAS toolbar, select the
for a single-step poll or the
button for continuous polling. To stop
Waveforms
in
.
Chapter
9
for
139
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