User`s manual

Acquisition Control AW00118302000
90 Basler racer GigE
Timed Exposure Control Mode
When the timed exposure control mode is selected, the exposure time for each line acquisition is
determined by the value of the camera’s Exposure Time parameters. If the camera is set for rising
edge triggering, the exposure time starts when the source signal for the line start trigger rises. If the
camera is set for falling edge triggering, the exposure time starts when the source signal falls.
Fig. 27 illustrates timed exposure with the camera set for rising edge line start triggering.
Fig. 27: Timed Exposure with Rising Edge Line Start Triggering
For more information about the camera’s exposure time parameters, see Section 8.2.5.2 on
page 93.
Exposure Start and Exposure End Delays
When the line start trigger mode is set to on and an input line is selected as the source signal for
the line start trigger, there is a delay between the transition of the line start signal and the actual
start of exposure. For example, if you are using the timed exposure mode with rising edge
triggering, there is a delay between the rise of the signal and the actual start of exposure.
There is also an exposure end delay, i.e., a delay between the point when exposure should end as
explained in the diagrams on the previous page and when it actually does end.
The base exposure start and end delays are as shown in Table 8:
raL2048-
48gm
raL4096-
24gm
raL6144-
16gm
raL8192-
12gm
raL12288-
8 gm
Start Delay 1.5 µs 1.5 µs 1.5 µs 1.5 µs 1.5 µs
End Delay 1.2 µs 1.2 µs 1.2 µs 1.2 µs 1.2 µs
Table 8: Base Exposure Start and End Delays
When using the frequency converter, the delay values may slightly differ from
those given in Table 8.
Exposure
(duration determined by the
exposure time parameters)
Source Signal Period
Source
Signal