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The swell/dip event log can be displayed by PSM in three ways:
text record, one line per event
placement of magnitude vs. calendar timeframe
placement of duration vs. calendar timeframe.
The text record allows for quickly spotting certain
trends, such as the problem always being with the
same signal or the problem is always a dip event.
The placement of magnitude and/or duration vs. calendar timeframe allows spotting
times of day that events occur, and noticing if events are of similar durations, and
noticing if events are of similar magnitudes. To view magnitude vs. time, click on
the magnitude icon. To view duration vs. time, click on the duration icon.
Swell/Dip RMS Graph Log
Each record of the Swell/Dip RMS graph log is a recording of the RMS level of the signal starting 2
cycles before the trigger threshold is passed and continuing for 48 cycles or until the first ½ cycle that
did not exceed the trigger threshold and was followed by 1 second of not passing the trigger threshold.
The record has timestamp and the RMS levels of each ½ cycle during the duration of the event. These
records are typically not too data intensive, so they do not require an excessive amount of memory.
Each record of the swell/dip RMS graph log can be
graphed for overall viewing of the event. Key data is
listed above the graph. The time at which the trigger
occurred, the duration, the signal name, and the
magnitude are all listed. The graph displays RMS
values of each ½ cycle for the entire length of the
event. The graph can be zoomed-in on and can be
printed.
The swell/dip event RMS data log is recorded as tab
delimited text, so it can be imported into Excel for
custom analysis.
Содержание ATPOL II
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