Generate Analog output Trigger (TTL signal) on analog input trigger using USB daq 6361

[AnkitG]

Hi all,

I have a case in which I want to generate a trigger signal (analog output) on the input signal falling edge (analog input) using USB DAQ 6361 to trigger my camera . Is there any examples available to generate an Analog output signal on the analog input trigger or can any one tell me how should i proceed.

Thanks

[Air_Frantz]

This really should be placed here if you would like more responses.

When you move it, can you explain why you are using analog output as a trigger source?  It would be easier to use the digital lines for this purpose.  Also, most DAQmx tasks can be set up for use with an analog trigger, it's one of the options from the DAQmx trigger VI.  Here's an example: http://www.ni.com/example/31109/en/ Although I think this example may be more involved than what you are trying to do, it should give you some insight.

[AnkitG]

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@Air_Frantz wrote:

This really should be placed here if you would like more responses.

When you move it, can you explain why you are using analog output as a trigger source?  It would be easier to use the digital lines for this purpose.  Also, most DAQmx tasks can be set up for use with an analog trigger, it's one of the options from the DAQmx trigger VI.  Here's an example: http://www.ni.com/example/31109/en/ Although I think this example may be more involved than what you are trying to do, it should give you some insight.

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Hi AirFrantz,

I dont understand how to use digital lines using daqmx task. 

what I want is to trigger my camera on when there is an analog signal present. my daq board is 6361 usb with bnc connections, when I try to use analog trigger in the given example you sent I cant select Analog input ? Do I have to use PFI 0 ? 

My input signal is of 0.1v and 200hz and I have to trigger the acquisition on the falling edge of that signal presence. my camera get triggerred by the TTL signal hence I am trying to generate an analog output pulse when there is an input pulse present.

thanks

[Air_Frantz]

I guess there's no reason why you would need to use digital output over the analog output in this case.  When not performing analog input, it may be necessary to use the PFI0 line for the trigger.