National Instruments Image Acquisition Software - Manual (Page 17)

Chapter 2 Software Overview
NI-IMAQ User Manual 2-4 © National Instruments Corporation
imgSessionWaitSignalAsync
Monitors for a signal to be asserted and
invokes a user-defined callback when the
signal is asserted.
imgPulseCreate Configures the attributes of a pulse. A
single pulse consists of a delay phase
(phase 1), followed by a pulse phase
(phase 2), and then a return to the phase 1
level.
imgPulseDispose Disposes of a pulse ID.
imgPulseRate Converts delay and width into delay,
width, and timebase values needed by
imgPulseCreate .
imgPulseStart Starts the generation of a pulse. You must
call
imgPulseCreate first to configure
the pulse.
imgPulseStop Stops the generation of a pulse.
Miscellaneous Functions
Miscellaneous functions set and get the acquisition window’s region of
interest and return information such as session status and buffer sizes.
imgSessionStatus Gets the current session status.
imgSessionSetROI Sets acquisition origin and dimension.
imgSessionGetROI Gets acquisition origin and dimension.
imgSessionGetBufferSize Gets the minimum buffer size needed for
frame buffer allocation.
UM.book Page 4 Monday, July 13, 1998 9:49 AM