Basler GigE SERIES User Manual

AW00089317000 Image Acquisition Control
Basler ace GigE 129
In the overlapped mode of operation, the exposure of a new frame begins while the camera is still
reading out the sensor data for the previously acquired frame. This situation is illustrated in
Figure 68 with the camera set for the trigger width exposure mode.
The way that you operate the camera will determine whether the exposures and readouts are
overlapped or not.
If we define the “frame period” as the time from the start of exposure for one frame acquisition to
the start of exposure for the next frame acquisition, then:
You can determine the readout time by reading the value of the Readout Time Abs parameter. The
parameter indicates what the readout time will be in microseconds given the camera’s current
settings.
You can read the Readout Time Abs parameter value from within your application software by using
the Basler pylon API. The following code snippet illustrates using the API to get the parameter
value:
double ReadoutTime = Camera.ReadoutTimeAbs.GetValue( );
You can also use the Basler pylon Viewer application to easily get the parameter value.
For more information about the pylon API and the pylon Viewer, see Section 3 on page 45.
Exposure will ... If
not overlap
Frame Period > Exposure Time Abs Parameter Setting + Total Readout Time
overlap
Frame Period  Exposure Time Abs Parameter Setting + Total Readout Time
Frame Acquisition N
Exposure Readout
Frame Acquisition N+1
Exposure Readout
Frame Acquisition N+2
Exposure Readout
Time
Frame Acquisition N+3
Exposure Readout
ExFSTrig
Signal
Fig. 68: Overlapped Exposure and Readout

Basler GigE SERIES Specifications

General

Interface	GigE
Lens Mount	C-Mount, CS-Mount
Sensor	CMOS
Mount	C-mount, CS-mount
Power Supply	Power over Ethernet (PoE)
Dimensions	Varies by model
Weight	Varies by model
Operating Temperature	Varies by model