Section 5. Real-Time Tools
value is less than –10, all of the points in the series are divided by 10 until the
maximum value is less than or equal to 10 and the minimum value is greater
than or equal to –10. If all of the points in the series are greater than or equal
to –1 and less than or equal to 1, all of the points in the series are multiplied by
10 until the at least one value is outside that range. Note that scaling occurs
when the Apply button is pressed on the dialog box. Rescaling does not
automatically occur if the values go out of the range. However, you may press
the Rescale button to recalculate the scale at any time.
Custom Scaling – The Max Value and Min Value fields are used to specify a
fixed range for the Y axis. When this option is in effect, the Rescale button on
the Graph will be disabled. Any data values that do not fall within the
specified range will not appear on the graph.
Data Display Tab
Time Axis Display ─ These options affect the horizontal time axis. You can
choose to Show Time and Date, Display Just Time, or Hide the Timestamp.
Numeric Display Options – Select Automatic to have the number of decimal
places determined automatically by the data value. Select Specify Decimal
Places to specify how many decimal places will be shown in the Decimal
Places field. Check the Show Milliseconds check box to show milliseconds for
the timestamp. Clear the check box to omit milliseconds on the timestamp
display.
Buffer Data – Determines whether data coming into the graph is buffered.
Select the Buffer Data check box to buffer data. Clear the check box to prevent
data from being buffered.
The amount of data to be buffered is specified in the Number of Pages to
Buffer field. Each page will contain the amount of data specified by the Graph
Width.
When the Buffer Data option is on, a stopped graph can be scrolled backward
in time for the amount of pages specified. The paused graph will have arrows
which appear to facilitate moving backward or forward one page at a time,
moving to the earliest page, or moving to the latest page. You can also
manually navigate through the buffered data by right-clicking and dragging to
move backward or forward in time.
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