User Manual
SeaStar Graphic Supporting Software
©2014 Star-Oddi. All Rights Reserved
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by the initial interval. For example, if the initial interval was 15 minutes, only the 1 hour
option can be selected for time synchronous.
measurements in the original file that are not to be shown.
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Re
7.9
Rate Of Change (ROC)
This new feature gives the user a chance to see how fast the signal is changing, i.e.
the estimated velocity of the signal. This applies to all measured parameters. The ROC
is calculated via a two point numerical differentiation:
ROC= (P2-P2)/(t2-t1)
P: Parameter expressed in a user defined unit
t: Time (hour, minute or second)
The way the ROC is set up and viewed is very similar to the TSD.
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Figure 7.10 ROC Definition
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