User guide

LBA-USB User Guide Document No: 11294 Page 71
Strip Chart Controls
A sample of data is defined as: Any results computed from a discrete beam
image captured from LBA-USB.
The beam stability window computes its results based on samples taken from the
time Start! is clicked, until the beam display is reset or until the application is
closed and restarted.
These controls and parameters configure the way beam stability data samples
are displayed.
 Sample limit – The strip chart display may become so compact that recent data
points become visually indiscernible from the rest of the data in the strip chart. If
the user desires to collect several samples, and still focus their attention on the
most recent data, it may be necessary to limit the number of displayed samples.
The Sample limit edit box allows the user to specify how many of the most
recent samples will be displayed in the strip chart.
For example, if you have collected samples [1-1000] and the Sample limit is
set to 100, samples [900-1000] will be the only samples visible in the strip chart.
Statistical results will be computed using the complete sample set [1-1000].
 Samples – Indicates the total number of samples collected.