User's Manual

PQ Log
Users Manual
38
• According to the extreme value: All channels are scaled according to the
minimum and maximum values. They are always visible in the diagram (the
maximum value is scaled to the middle of the diagram).
Note
Each individual measurement row can have its own scaling. The scaling
can look unfamiliar and the evaluation complex especially when indicating
the voltage’s minimum, maximum, and mean values. So grouping of similar
parameters to use identical scales is recommended.
• Manual: Enter the 0 %- and the 100 %-scaling value for each measurement row.
The actual minimum and maximum values of each measurement row are given.
Also select the channels to be used for labeling the value-axes.
Grouped
If this checkbox is selected, related measurement rows, example, voltage (1), current (2),
and flicker (3), are scaled in the same way. Click OK to view the timeplot in the desired
format.
The advantages are obvious:
• Manual entry of the manual scaling values is only required once, which
substantially facilitates the scaling process.
• Reading errors due to different scales are prevented.
A channel selection can be called up from every timeplot by clicking the icon in the
symbol bar of the diagram.
Note
Check the different options using the demo measurements, or one of your
own measurements. This will give you a summary of the different options of
the level-time diagram analysis.
The Symbol Bar of the Timeplot
The individual icons shown in the left column are accompanied by their respective menu
options, as well as the descriptions.