SATEC PM175 Manual - Manual (Page 133)

‎Chapter 4 PAS Application Software Viewing Recorded Files
Series PM175 Powermeters 133
Selecting the Time Axis
The horizontal axis can be displayed either in absolute time
with date and time stamps, or in milliseconds relatively to the
beginning of a waveform. To change the time units, click on
the waveform window with the right mouse button, select
“Options...”, click on the “Axes” tab, select the desired units,
and then click OK.
Viewing Phasor Diagrams
The phasor diagrams show you the relative magnitudes and
angles of the three-phase voltage and current fundamental
component. All angles are shown relative to the reference
voltage channel.
To change the reference channel, click on the waveform
window with the right mouse button, select “Options...”, click
on the “Phasor” tab, check the channel you want to make a
reference channel, and then click “OK”.
If you leave the Triangle box checked, PAS connects the ends
of the voltage and current vectors showing you three-phase
voltage and current triangles. This is useful when analyzing
voltage and current unbalances.
Phasor diagrams are calculated over one waveform cycle
pointed to by the left marker line. As you move the marker, the
phasor diagrams are updated reflecting the new marker
position.
Viewing Symmetrical Components
PAS can calculate the symmetrical components for voltages
and currents at the point indicated by the left marker line. To
enable or disable the symmetrical components, click on the
waveform window with the right mouse button, select
“Options...”, check or uncheck the “Symmetrical components”
box on the “Channels” tab, and then click OK.
Selecting Primary and Secondary Units
Voltages and currents can be displayed in primary or
secondary units. Click on the waveform window with the right
mouse button, select “Options...”, select the desired units for
voltages and currents on the Channels tab, and then click OK.
Using a Zoom
Use the green arrowheads on the local toolbar to zoom in or
out of the waveform graph. Every click on these buttons gives
you a 100-percent horizontal or 50-percent vertical zoom. Use
the magnifying glass buttons to get a proportional zoom in
both directions.
When in the overlapped waveform view, you can zoom in on a
selected waveform region. Click on the waveform window with
the right mouse button, click 'Zoom', point onto one of the
corners of the region you want to zoom in, press and hold the
left mouse button, then point to another corner of the selected
region and release the mouse button.
Customizing Line Colors and Styles
To change the colors or line styles, click on the waveform
window with the right mouse button, select “Options...”, click
on the Display tab, adjust colors and styles, and then click OK.
You can also change the waveform background and gridlines
color.