The main menu of Civit is reproduced in fig. 8. The acquisition parameters are set in Aquire/Configure. This menu, shown also in fig. 8 first allows to choose the path (directory) and file Naming(3.6) of the image series (with 2 characters).
The ``Camera Integration'' gives the frame period (in multiple of the elementary one, 1/60 s for the SMD(2.3) and 1/30 s for the Pulnix(2.3)). This provides the unit used for all the other times. The ``calibration data'' gives the scale in pixels/cm (it has to be introduced manually) . We can set also the Wait time before starting the image acquisition (no external trigger is presently available).
In the second column, one sets the image acquisition timing. We first set the total number of bursts and their period (i. e. the sampling period for the velocity evolution). This period can be made variable in time, which can be useful for an optimal sampling of a decaying flow. The Burst Timing sets the number of images in a burst and the successive intervals
(always expressed in
frame periods in the intervals between images, add one frame to get
the time intervals). These intervals can be made variable in time
with the option ``variable burst period''.
The parameters for the laser sheet scanning can be also set in the third column of the menu.
NOTE: the parameters of an experiment are put in a file.exp. Don't forget to save this file, using the corresponding option in the Civit menu.
