User`s manual

Image Acquisition Control
Basler scout light 71
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 two 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 sum of the exposure time plus the sensor readout time is the most
restrictive factor.
Decreasing the AOI height for the acquired frames will decrease the sensor readout time and
will make this factor less restrictive.
If you are using long exposure times, it is quite possible to find that your exposure time is making
this factor the most restrictive. 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.)
 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.
For more information about the AOI settings, see Section 9.4 on page 111.
Formula 1:
Calculates the maximum frame rate based on the sum of the exposure time plus 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:
slA750-60 fm
C
1
31.0 µs
C
2
397.0 µs
Max. Frames/s
1
Exposure Time in µs AOI Height C
1
×()C
2
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