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How Do I Set Up a Triggered Acquisition for the DSA Boards in C or CVI with NI-DAQ?

Primary Software: Driver Software>>NI-DSA
Primary Software Version: 1.0
Primary Software Fixed Version: N/A
Secondary Software:

Problem: How do I set up a triggered acquisition based on an external digital trigger for the NI 44xx and NI 45xx Dynamic Signal Analyzer (DSA) boards in C or CVI with NI-DAQ function calls?

Solution: Use the Select_signal function to specify an external trigger. Use ND_IN_START_TRIGGER as the signal name and ND_PFI_0 as the signal source for the NI 4451 and NI 4452. Use ND_DSA_EXTERNAL_DIGITAL_TRIGGER as the signal source for the NI 4551 and NI 4552. The pin connection information for the external trigger signal can be found in the User Manual for the board you are using.

Example code:

//Set trigger to PFI_0 if it is an NI 44xx and ND_DSA_EXTERNAL_DIGITAL_TRIGGER if it is an NI 45xx
	
Select_Signal (iDevice, ND_IN_START_TRIGGER, trigger, ND_LOW_TO_HIGH); 

Related Links: DSA Support
Product Manuals: PCI-4451/4452/4453/4454 User Manual
Product Manuals: NI 4551/4552 User Manual

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Report Date: 11/05/1999
Last Updated: 09/11/2001
Document ID: 1R48E30O

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