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Chapter 2
Software Overview
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National Instruments Corporation
2-3
imgGrabArea
Performs a transfer from a continuous
acquisition. Call this function only after
calling
imgGrabSetup
.
Ring and Sequence Functions
Ring and sequence functions start and stop a continuous acquisition of
multiple fields or frames.
imgRingSetup
Prepares a session for acquiring
continuously and looping into a buffer
list.
imgSequenceSetup
Prepares a session for acquiring a full
sequence into the buffer list.
imgSessionStartAcquisition
Starts a session acquisition identified by
the session ID.
imgSessionStopAcquisition
Stops a session acquisition identified by
the session ID.
Signal I/O Functions
Signal I/O functions control the trigger lines on IMAQ devices.
imgSessionTriggerConfigure
Configures an acquisition to start based
on an external trigger.
imgSessionLineTrigSource
Configures triggering per line for
acquisition from a line scan camera.
imgSessionTriggerClear
Disables all triggers on the session.
imgSessionTriggerDrive
Configures the specified trigger line to
drive a signal out.
imgSessionTriggerRead
Reads the current value of the specified
trigger line.
imgSessionWaitSignal
Waits for a signal to be asserted. This
function will return when the specified
signal is asserted.
UM.book Page 3 Monday, July 13, 1998 9:49 AM