MTS Series 793 Application - Manual (Page 447)

Data Display Process
MTS MultiPurpose TestWare® Other Process Descriptions 447
Discard Oldest Points—This option causes the buffer to accept acquired data
until it fills, perform a decimation that discards the oldest points in the buffer,
shift data, and repeat. If the selected signal is something that is always
increasing such as time, the result is a scrolling effect. This method of
discarding points prevents the plot from redrawing on any given update cycle if
the number of points acquired is relatively small.
First and subsequent passes: On any given pass, the buffer accepts every point
of acquired data until the buffer is full, then performs a decimation by
discarding the oldest points in the buffer. The retained points are shifted to the
front of the buffer to form a contiguous block, leaving the back half of the
buffer empty and ready to receive new data.
The number of points discarded is the greater of the number of points that have
been acquired per update (internally determined time) or 10% of the buffer
size.
As the old points are discarded, new points are acquired. The number of points
acquired is dependent on the acquisition rate (which varies depending on the
acquisition signal and increment value).
Plot Setup Tab (part 6 of 7)
I TEM D ESCRIPTION