Other
Data and Display Features
In
addition to the data and display menu items described above,
there are other basic display features built into Motion Scope.
These menu items control qualities such as presentation and
data buffer size.
MaxBuffer
(ms) and SampleSize (samples)
The
MaxBuffer and SampleSize fields occupy the same
portion of the Motion Scope control panel; when one is selected,
the other is deselected. Both serve the same function: setting
the amount of memory to be used for recording data. Both also
affect X-axis scaling of the display pane.
- The
Max Buffer field is displayed when the Display /
X-Axis / Sample Numbers menu item is not selected. This
value is entered in milliseconds and may be set up to 50000
ms (50 seconds).
- The
SampleSize field is displayed when the Display /
X-Axis / Sample Numbers menu item is selected. This value
is entered in samples and may be set up to 200000.
MaxBuffer
and SampleSize set the amount of buffered memory available
for tracing. As new signal data is written to the memory buffer,
old signal data is permanently lost. Therefore, you should set
this value to a size at least as large as the event to be traced.
Note
that as the size of MaxBuffer and SampleSize increases,
the width of the XOffset slider bar decreases. (See "XOffset"
section below.) This is because, for larger samples, the displayed
portion of the data shown in the pane represents a smaller portion
of the whole.