User manual

UniversitàdegliStudidiCatania
IntroductiontoNILabVIEW
 LabVIEWG‐Language:DAQconcepts
Virtual channels define real‐world measurements consisting of one
or more DAQ channels (terminals on your DAQ device) along with
other channel‐specific information: range, terminal configuration,
and custom scaling that is used to format the data.
An NI‐DAQmx Task is a collection of one or more virtual channels
along with timing, triggering, and other properties. Conceptually, a
task represents a measurement or generation you want to perform.
For example, a task allows you to specify whether you want to
measure 1 sample, measure N samples, or measure continuously
(using a buffer to store data). A task also allows you to specify the
sample rate, the timing clock source, and the task triggers. Once
youhavedefinedatask,youcansimplystartthetask,readthetask
data, and stop the task from within LabVIEW.
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