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6) All graphs and waveforms have data that is displayed. The
heading tells which signal or measurement is associated
with which data. The color of the heading is the same as
the color of the data presentation.
7) Summary data is displayed on all graphs and waveforms.
a) For a consumption log, the summary data for a specific
heading depends on the measurement. If it is an
average, the summary is the average of all the values
shown. If it is a minimum, it is the minimum of all the
values shown. If it is a maximum, it is the maximum of
all the values shown. If it is an energy (kWH), it is the
final point shown (the energy consumed during the time
displayed).
b) For a consumption waveform, the summary for a specific signal is the RMS value and crest
factor of the signal. The power and power factor of the phase or phases is also shown at the
right.
c) For a swell/dip RMS graph or waveform, the summary
is the maximum RMS value (for a swell) or minimum
RMS value (for a dip), the duration of the event, and
the threshold.
d) For a swell/dip log, the summary is the number of
events shown for each signal, the RMS level of the
worst event for each signal, the duration of the worst
event for each signal, and the threshold for each
signal.
e) For a high-speed transient log, the summaries are the
same as for the swell/dip log except values are in
instantaneous levels rather than RMS levels.
f) For a high-speed transient waveform, the summaries are the same as for a swell/dip waveform,
except the values are in instantaneous levels rather than RMS levels.
8) Information specific to the position of the cursor is displayed. For instance, when the cursor is
positioned over a consumption log, the data values at that time are presented within parentheses
under the signal names in the heading and the time and date stamp at that point and the record
number are presented at the upper right within parentheses. For swell/dip logs and high-speed
transient logs, the number of transients to the left of the cursor is presented, unless the cursor is on
top of one of the event data points. In that case, the signal name, magnitude, duration, time and
date stamp, and event number of that data point are presented. Information within parentheses will
not be printed out.
Zooming and Panning
Perhaps the most powerful tool of graphical analysis is zooming. This feature allows you to expand an
area of interest of a graph or waveform so that it fills the screen. It also allows you to trim off areas that
you don’t want displayed (for instance, you may only want one week of a 30 day log displayed for
printing).
There are multiple ways to zoom in on an area of interest. The easiest is to position your cursor at the
upper left corner of the area you wish to expand and then left-click-and-hold-
down and “drag” the cursor
to the lower right. As you drag the cursor, a box will appear on the screen and it will grow as you move
the curson
down and to the right. When you release the mouse’s left button, the area that was within
the screen will expand to fill the screen. Other ways to zoom in are to click on the zoom-in icon (a
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