Basler Camera User Manual page 146

Image Acquisition Control
Frame Trigger Wait Signal Details
acA2500-14um/uc, acA3800-14um/uc, acA4600-10uc)
When the camera is set for the timed exposure mode, the rise of the Frame Trigger Wait signal is
based on the current Exposure Time parameter setting and on when readout of the current frame
will end. This functionality is illustrated in Figure 65.
If you are operating the camera in the timed exposure mode, you can avoid overtriggering by always
making sure that the Frame Trigger Wait signal is high before you trigger the start of frame capture.
Frame Trig
Wait Signal
ExFSTrig
Signal
Exposure
Fig. 65: Frame Trigger Wait Signal with the Timed Exposure Mode
136
(All Models Except acA1920-25um/uc,
Frame Acquisition N
Sensor Readout
Exp. Time Setting
Exposure
Frame Acquisition N+1
Sensor Readout
Exp. Time Setting
Exposure
Time
AW00123402000
The rise of the Frame Trigger
Wait signal is based on the
end of frame readout and on
the current Exposure Time
parameter setting
Frame Acquisition N+2
Sensor Readout
= Camera is in a "waiting for
frame start trigger" status
Basler ace USB 3.0