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[ÇóÖú] ʹÓÃsession-based interface CounterOutputChannel¿ØÖƵç»úÒÆ¶¯

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s = daq.createSession('ni');
ch = s.addCounterOutputChannel(DevicesID, 'ctr0', 'PulseGeneration');

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ÎÒ¿´ÁËÏÂsµÄÊôÐÔ
s.NumberOfScans,
s.DurationInSeconds,
s.Rate,
s.IsContinuous,
s.NotifyWhenDataAvailableExceeds,
s.IsNotifyWhenDataAvailableExceedsAuto,
s.NotifyWhenScansQueuedBelow,
s.IsNotifyWhenScansQueuedBelowAuto,
s.Vendor,
s.Channels,
s.IsRunning,
s.IsLogging,
s.IsDone,
s.RateLimit,
s.ScansQueued,
s.ScansOutputByHardware,
s.ScansAcquired

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ÎÒµÄÎÊÌâÊÇ£ºÖ®Ç°ÎÒʹÓà s.DurationInSeconds, s.RateÀ´¿ØÖƵç»úµÄÒÆ¶¯£¬µ«ÊÇ×ÜÊÇ´æÔÚÎó²î£¬ºóÀ´¸ÄÓÃs.NumberOfScansËäÈ»É趨ÁËÊýÁ¿£¬µ«ÊÇÎó²îÒÀÈ»´æÔÚ¡£
matlab°ïÖúÎĵµÀïÃæ¶ÔNumberOfScansµÄÃèÊöÊÇÕâÑùµÄ£º

When working with the session-based interface, use the DurationInSeconds property to change the duration of an acquisition. When the session contains output channels, DurationInSeconds becomes a read only property and its value is determined by s.scanQueued/s.Rate. ÕâÓÖÊÇʲôÒâ˼¡£
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