AW00118508000 Acquisition Control
Basler racer Camera Link 89
6.4.1 Increasing the Maximum Allowed Line Rate
You may find that you would like to acquire lines at a rate higher than the maximum allowed with
the camera’s current settings. In this case, you must first determine what factor is most restricting
the maximum line rate. The descriptions of the three factors that appear below will let you determine
which factor is restricting the rate.
Factor 1:
Factor 1 is the sensor readout time. The readout time for a particular sensor is a fixed value.
Therefore, the related maximum line acquisition rate is also fixed. Note that this line acquisition rate
is the absolute maximum for a camera model and that it does not increase when smaller image
AOIs are used. The table below shows the nominal maximum line rate (in lines per second) for each
camera model. The line rates are based on sensor readout time. For the actual maximum line rates,
see Section 6.2.1.2 on page 75.
Factor 2:
Factor 2 is the exposure time. You can use the formula below to calculate the maximum line rate
based on the exposure time for each acquired line:
Where the constant C
1
takes account of the exposure overhead (see also Section 6.2.1.1 on
page 73). The constant depends on whether the parameter limit is removed from the
ExposureOverhead parameter, as shown in the table below:
For more information about setting the exposure time, see Section 6.1.5.3 on page 68.
For information about how to increase the exposure time see Section 6.4.2 on page 91.
Max Lines/s (nominal; based on
sensor readout)
raL2048-
80km
raL4096-
80km
raL6144-
80km
raL8192-
80km
raL12288-
66km
80000 80000 80000 80000 80000
raL2048-
80km
raL4096-
80km
raL6144-
80km
raL8192-
80km
raL12288-
66km
C
1
(Default Value)
5.4 µs 5.4 µs 5.4 µs 5.4 µs 5.4 µs
C
1
(Limit Removed From
ExposureOverhead
Parameter)
3.4 µs 3.4 µs 3.4 µs 3.4 µs 3.4 µs
Max Lines/s
1
Exposure time in µs C
1
+
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