BSA Flow Software Installation and User's Guide - CSI

Avoid overloading the photomultipliers.
For LDA systems with 57X08 and 57X18 type photomulitpliers, the
processor’s built-in protection circuit will gradually reduce the PM high
voltage in case of excessive PM anode current, but it is recommended to
avoid overload situations.
In case of measurements between the blades of an impeller the PM current
will be high when an impeller blade passes through the measurement
volume, and this will overload the PM current for a short period, which is
acceptable. However, if possible, it is recommended to establish a laser
shutter system which blocks the laser beams during passages of solid
surfaces through the measurement volume
The Scope display’s triggering and scaling are explained in Chapter 5 –
Group poperties.
The CPU load can be checked by the Windows Task Manager’s
Performance tab. If it is near 100% during acquisition, it is recommended to
set Scope display Off, and do disable as many objects as possible during
acquisition. See chapter 5 for details.
12. . Before taking data, a result display should be defined. To display a
velocity distribution histogram, right-click on the BSA Application icon
in the project explorer and select New. Select Histogram from the
dialog. A new window appears in the workspace.
The axes will automatically rescale when you start acquiring data.
13. To start acquisition, click on BSA Application in the project explorer,
and click on the Run button in the tool bar (or press the F5 button on
the keyboard).
The histogram will be updated during the measurement. With 2000
samples selected, all data is usually sent in a single block, so the
histogram updates once only. The update rate depends on the data rate.
With high data rates and a large number of samples, you will see several
updates during an acquisition.
When the acquisition is completed, the “Run” button is clear again. If the
System monitor is open, either the Samples or Acquisition bar graph is at
full scale.
Under the menu “Tools - Options - General” you can select “Feedback
with sound”. With this option active, you will hear a sound from the PC
when acquisition is completed.
4-52 BSA Flow Software: The user interface