Basler SCOUT LIGHT User Manual Page 67

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Image Acquisition Control
Basler scout light 59
6.7.2 Trigger Ready Signal (slA750-60fm Only)
As described in an earlier section, on these cameras the exposure for an image acquisition must
not begin until readout of the previously acquired image has ended. The camera supplies a “Trigger
Ready” (TrigRdy) output signal you can use to ensure that these conditions are met when you are
using a hardware trigger signal to trigger image acquisition. When you are acquiring images, the
camera automatically calculates the earliest moment that it is safe to trigger each new acquisition.
The trigger ready signal will go high when it is safe to trigger an acquisition, will go low when the
acquisition has started, and will go high again when it is safe to trigger the next acquisition (see
Figure 22). The camera calculates the rise of the trigger ready signal based on the current exposure
time parameter setting, the current size of the area of interest, and the time it will take to readout
the captured pixel values from the sensor.
The trigger ready signal is especially useful if you want to run the camera at the maximum
acquisition frame capture rate for the current conditions. If you monitor the trigger ready signal and
you begin acquisition of each new image immediately after the signal goes high, you will be sure
that the camera is operating at the maximum acquisition frame rate for the current conditions.
Fig. 23: Trigger Ready Signal
Note
The information in this section only applies to slA750-60fm cameras. For
information about the other camera models, see Section 6.7.1 on page 57.
Image Acquisition N
Exposure
Readout
Time
Signal goes high
at earliest safe
moment to trigger
acquisition N+1
TrigRdy
Signal
Signal goes low
when exposure
for acquisition
N+1 begins
Image Acquisition N+1
Exposure
Readout
Image Acquisition N+2
Exposure
Readout
Signal goes high
at earliest safe
moment to trigger
acquisition N+2
Signal goes low
when exposure
for acquisition
N+2 begins
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