Operation Manual

19 PRIMETECH ENGINEERING
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4.8. TriggerControl
The TriggerControl registers are shown below.
TriggerControl register list
Name Visibility Access
Values
TriggerMode Beginner R/W
Off
On
TriggerSoftware Beginner R/W Execute
TriggerSource Beginner R/W
GPIO_IN1
GPIO_IN2
GPIO_IN3
Software
TriggerActivation Beginner R/W
RisingEdge
LevelHigh
FallingEdge
LevelLow
TriggerDelay Expert R/W 0 ~ 80000 μsec, 1 μsec step
Note) TriggerMode cannot be changed during video output (in Grab).
Trigger mode is used to control the exposure timing with an external trigger.
External triggers are enabled when TriggerMode on and TriggerSource is GPIO_IN*.
TriggerMode Off is the normal mode. It works with the camera's internal synchronization at the set frame rate and
exposure time.
In normal mode, exposure and data transfer are processed at the same time.
However, in trigger mode, exposure and data transfer cannot be processed at the same time, and data transfer is
processed after the exposure period.
If the next trigger is entered during the exposure period or data transfer, that trigger will be ignored. At this time, the
trigger frequency and the video frame rate will not match.