West Control Solutions DataVU 7 - Manual (Page 70)

5 Memory Presentation (History)
70
Event list This function is used to present the event list for the group that is visible. The
message that is closest to the cursor is shown in the list.
v Chapter 6 "Alarm and Event Lists"
Scroll lines Rotating the control knob moves the cursor through the visualization window.
The data in the “Numerical measurement display” are updated every time
there is a shift. If you move right up to the edge of the window, the
measurement curve will automatically be shifted and the required data will be
presented.
“Scroll lines” can be ended by pressing the control knob.
Scroll pages Rotating the control knob moves the cursor an entire screen (=page) at a time.
The data in the “Numerical measurement display” are updated every time
there is a shift. The system automatically positions the cursor at the end of the
page, as required.
“Scroll pages” can be ended by pressing the control knob.
Zoom and
search This function affects how many measurements are used to calculate a point in
the diagram, and to search for measurements according to date and time.
Zoom
The factory setting is “1:1”, which means that every measurement in the
History memory will be displayed. “1:2” means that every second
measurements is displayed, and so on.
h Select the zoom factor by rotating the control knob.
h Close the dialog window and activate the new zoom factor by pressing the
control knob.
h Selecting “Exit” closes the dialog window, and the presentation remains
unchanged.
Fit to screen
This function is only available for presenting the data for a completed batch. If
this function is selected, the zoom factor will automatically be adjusted so that
the measurement curve for the completed batch is shown in one window.
However, 1:1 presentation should be used for evaluating a batch.