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Chapter 2

Function Reference — Config_ATrig_Event_Message

NI-DAQ FRM for PC Compatibles

2-70

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 National Instruments Corporation

Figure 2-3.  Analog Trigger Event

Config_ATrig_Event_Message

 is a high-level function for NI-DAQ event messaging. 

Because this function uses the current inputRange and polarity settings to translate 
trigLevel and windowSize into binary units, you should not call 

AI_Configure 

and change 

these settings after you have called 

Config_ATrig_Event_Message

. For more information 

on NI-DAQ event messaging, see the low-level function 

Config_DAQ_Event_Message

.

P

N

Time

P:  positive trigger point
N:  negative trigger point