Basler Camera User Manual

Image Acquisition Control AW00123402000
106 Basler ace USB 3.0
6.4.3.2 Exposure Modes
If you are triggering the start of frame acquisition with an externally generated frame start trigger
(ExFSTrig) signal, two exposure modes are available: timed and trigger width.
Timed Exposure Mode
When timed mode is selected, the exposure time for each frame acquisition is determined by the
value of the camera’s Exposure Time parameter. If the camera is set for rising edge triggering, the
exposure time starts when the ExFSTrig signal rises. If the camera is set for falling edge triggering,
the exposure time starts when the ExFSTrig signal falls. Figure 46 illustrates timed exposure with
the camera set for rising edge triggering.
Note that, if you attempt to trigger a new exposure start while the previous exposure is still in
progress, the trigger signal will be ignored, and a Frame Start Overtrigger event will be generated.
This situation is illustrated in Figure 47 for rising edge triggering.
For more information about the Frame Start Overtrigger event, see Section 8.12 on page 225.
For more information about the camera’s Exposure Time parameter, see Section 6.5 on page 110.
ExFSTrig Signal Period
Exposure
(duration determined by the
Exposure Time parameter)
ExFSTrig Signal
Fig. 46: Timed Exposure with Rising Edge Triggering
This rise in the trigger signal will be
ignored, and a Frame Start Overtrigger
event will be generated
Exposure
(duration determined by the
Exposure Time parameter)
ExFSTrig Signal
Fig. 47: Overtriggering with Timed Exposure

Basler Camera Specifications

General

Category	Security Camera
Brand	Basler
Resolution	Varies by model
Sensor Type	CMOS
Frame Rate	Varies by model
Dimensions	Varies by model
Weight	Varies by model
Interface	GigE, USB 3.0
Lens Mount	C-Mount, CS-Mount