Basler acA2040-55 User Manual

AW00123409000 Image Acquisition Control
Basler ace USB 3.0 171
When the camera is set for the trigger width exposure mode, you can avoid overtriggering by
monitoring the rise of the Frame Trigger Wait signal. It is based on the Exposure Overlap Time Max
parameter setting and on when readout of the current frame will end. This functionality is illustrated
in Figure 78.
For information about the Exposure Overlap Time Max parameter and its use in the context of
exposure overlap time modes, see Section 6.4.3.2 on page 129.
For more information about the electrical characteristics of camera output lines, see Section 5.8.1
on page 75 and Section 5.9.4.1 on page 82.
Frame Trigger Wait Signal Details (acA1920-25um/uc, acA2500-14um/uc,
acA3800-14um/uc, acA4600-10uc Only)
For cameras with a rolling shutter, the rise of the Frame Trigger Wait signal is based on the minimum
time required between the end of exposure of the first line in a frame and the start of exposure for
the first line in the following frame. This functionality is illustrated in Figure 79.
If you are operating a camera with a rolling shutter, 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 Acquisition N
Exposure Readout
Time
Frame Trig
Wait Signal
Frame Acquisition N+1
Exposure
Frame Acquisition N+2
Exposure
ExFSTrig
Signal
Exp. Overlap Time
Max Setting
Exp. Overlap Time
Max Setting
The rise of the Frame Trigger
Wait signal is based on the end
of frame readout and on the
current Exposure Overlap Time
Max parameter setting
= Camera is in a "waiting for
frame start trigger" status
Fig. 78: Frame Trigger Wait Signal with the Trigger Width Exposure Mode
Sensor Readout
Sensor Readout

Basler acA2040-55 Specifications

General

Brand	Basler
Model	acA2040-55
Category	Digital Camera
Language	English