Acquisition Phase
An acquisition phase is the constitutive element of the acquisition sequence.
The rationale for an acquisition phase is to fill one surface of the destination cluster.
To achieve this result, the channel locks the use of a set of hardware resources for its own benefit, preventing any other channel to use these resources at the same time. By definition, this set of hardware resources (connector, selector, data conditioner, timing generator...) is collectively called a grabber.
- In case of normal speed area-scan cameras, the image data provided by the acquisition phase is a frame. For high-speed area-scan cameras, multiples frames are stored in a single surface during an acquisition phase.
- In case of line-scan, the image data provided by the acquisition phase is called a page. The number of lines constituting a page is chosen by the PageLength_Ln parameter.
An acquisition phase starts at SAP event (Start of Acquisition Phase). It occurs either at TE (Trigger Event), or automatically according to the chosen acquisition mode.
When completing the acquisition phase, the grabber hardware issues an event called EAP (End of Acquisition Phase). The usage of the EAP event is programmable.
Acquisition phase
For more information, refer to the MultiCam Acquisition Principles application note.