Image Acquisition Control AW00011916000
168 Basler scout GigE
For more information about AOI Height settings, see Section 12.4 on page 238.
For more information about the Resulting Frame Rate parameter, see Section 5.1 on page 57.
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 which 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 AOI
height for the acquired frames will decrease the sensor readout time and will make this factor
less restrictive.
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.)
The frame transmission time will not normally be a restricting factor. But if you are using
multiple cameras and you have set a small packet size or a large inter-packet delay, you may
find that the transmission time is restricting the maximum allowed rate. In this case, you could
increase the packet size or decrease the inter-packet delay. If you are using several cameras
connected to the host PC via a network switch, you could also use a multiport network adapter
in the PC instead of a switch. This would allow you to increase the Ethernet bandwidth
assigned to the camera and thus decrease the transmission time.
For more information about AOI settings, see Section 12.4 on page 238.
For more information on the settings that determine the bandwidth assigned to the camera, see
Section 5.2 on page 64.
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 Height settings.
The constants C
1
and C
2
depend on the camera model as shown in the table below:
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