2D channel API reference

A 2D represents an experimental channel which acquisition result is a image value.

A 2D has a state, and a value attributes. The state indicates at any time if the 2D is stopped, in alarm or moving. The value, indicates the current 2D value.

The other attributes are:

data source

Unique identifier for the 2D data (value attribute)

timer

name of the timer channel (proceeding from the same controller) to be used when the channel is acquired independently

special values:

__default - controller’s default timer
__self - the same channel acts like a timer
None - independent acquisition is disabled

integration time

integration time (in seconds) to be used when the channel is acquired independently

The available operations are:

start acquisition

starts to acquire the 2Ds

start_acquisition()

stop

stops the 2D acquisition in an orderly fashion

abort

stops the 2D acquisition as fast as possible

release

Release hung acquisition e.g. due to the hardware controller that got hung. You should first try stop/abort.