Basler SCOUT LIGHT User Manual Page 74

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Image Acquisition Control
66 Basler scout light
Increasing the Maximum Allowed Frame Rate
You may find that you would like to acquire frames at a rate higher than the maximum allowed with
the camera’s current settings. In this case, you must first use the three formulas described below
to determine what factor is restricting the maximum frame rate the most. Next, you must try to make
that factor less restrictive:
You will often find that the sensor readout time is most restrictive factor. Decreasing the height
of the acquired frames will decrease the sensor readout time and will make this factor less
restrictive.
If you find that the number of packets needed to transmit an image is restricting the frame rate,
you may be able to decrease the number of packets needed to transmit a frame. The next
section in this manual explains more about the effect of changing the packets per frame.
If you are using normal exposure times and you are using the camera at it’s maximum
resolution, your exposure time will not normally be the most restrictive factor on the frame rate.
However, if you are using long exposure times or small areas of interest, it is quite possible to
find that your exposure time is the most restrictive factor on the frame rate. In this case, you
should lower your exposure time. (You may need to compensate for a lower exposure time by
using a brighter light source or increasing the opening of your lens aperture.)
For more information about the AOI settings, see Section 9.4 on page 111.
Formula 1:
Calculates the maximum frame rate based on the sensor readout time:
Where:
AOI Height = the height of the acquired frames as determined by the AOI settings.
The constants C
1
and C
2
depend on the camera model as shown in the table below:
slA1000-30fm slA1390-17fm slA1600-14fm
C
1
36.57 µs 44.71 µs 52.37 µs
C
2
4699 µs 12215 µs 6896 µs
Max. Frames/s
1
AOI Height C
1
×()C
2
+
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