Increasing The Maximum Allowed Line Rate - Basler Racer User Manual

AW00118508000
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
Max Lines/s (nominal; based on
raL2048- raL4096-
80km 80km
80000 80000
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:
Max Lines/s = --------------------------------------------------------------------
Exposure time in µs
Where the constant C
1
page 73). The constant depends on whether the parameter limit is removed from the
ExposureOverhead parameter, as shown in the table below:
C
1
(Default Value)
C
1
(Limit Removed From
ExposureOverhead
Parameter)
For more information about setting the exposure time, see Section 6.1.5.3 on
For information about how to increase the exposure time see Section 6.4.2 on
Basler racer Camera Link
page 75.
sensor readout)
raL6144- raL8192-
80km
80000
1
+ C
1
takes account of the exposure overhead (see also Section 6.2.1.1 on
raL2048- raL4096-
80km 80km
5.4 µs 5.4 µs
3.4 µs 3.4 µs
raL12288-
80km 66km
80000 80000
raL6144- raL8192-
80km 80km
5.4 µs 5.4 µs
3.4 µs 3.4 µs
Acquisition Control
raL12288-
66km
5.4 µs
3.4 µs
page 68.
page 91.
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