THORLABS SP USB Series, Operation Manual

Page: 24 / 65

22 Splicco
© 2008 Thorlabs
Figure 22 Setting the average mode
The control to set the number of scans to average can be found on each panel
connected to this device in the left bottom corner. Right beside this control you
can see a status slide, which indicates the fill level of the buffer used for
averaging. In case the average method was set to "
Gliding average " the slide
will grow up to maximum and will stay there until you either change the average
mode or you press "Stop Loop" and "Start Loop" again. The gliding average
calculates the average from the last data sets no matter if the number of chosen
data sets was reached yet. If you want to average 10 data sets, the gliding
average will first calculate the average out of the first two data sets, then out of
the first three sets and so on until the desired number is reached. Then the last
data set will be substracted and the newest data set will be added to calculate the
average.
In case "
Block average " was chosen, the status slide will grow to maximum and
then the graph will be refreshed with the average of the accumulated scans. After
this all old values will be replaced with new values and the slide will be reseted.