D-Link DES-6300 User Manual page 254

Modular L3 Ethernet Switch User's Guide
If the Presentation Units is set to a value different from the Sample Time
value, the histogram is updated at the Presentation Units rate displaying
the estimated polling results. The graph is also updated with the true data
at the Sample Time rate.
Set the Presentation Units to a value lower than the Sample Time in
traffic-heavy systems (where too frequent system polling is not
recommended).
For example: if the Sample Time is set to 10 seconds and the Presentation
Units to 1 second, the graph is refreshed every second with extrapolated
data and every 10 seconds with true data.
Display Controls
This area controls what is displayed on the screen.
Alarm Definitions
Displays the variable alarm characteristics.
Other Controls
Other controls include the following:
To display graph data from earlier time periods available in the buffer:
Press Ctrl and Shift while dragging the mouse on the graph to the right. The graph temporarily
stops moving and is dragged back to an earlier period within the same session.
To return to current data:
Press Ctrl and Shift while dragging the mouse to the left.
To Zoom into a particular graph area:
Press Shift while dragging the mouse. When the mouse button is released, the selected area is
expanded. Click the Reset Display button to return to normal viewing.
To rotate the graph;
Press Ctrl while dragging the mouse.
To display actual variable values:
Click on a graph element. A label with the following information opens:
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