DAQ mx Start Trigger VI

[nnarra]

In one of our applications,we are using DAQ mx Start Trigger(Analog Edge) VI which is located in Measurement I/O -> NI-DAQ mx Palette -> Trigger.VI,

The snapshot of the VI is attached.
I want more explanation about the 'Level' Input Terminal of this VI,

I have seen context help for this VI already,but i want more explanation

aboutthe 'Level' input of this VI,level in the sense(sensitivity,whether this

level corresponds to voltage or current,if so,how much volts or amps we

have to give and on what basis,this level we have to give,can anybody

help me in this issue,

[Hillman]

Hi VeeNaveen,

Thanks for the post and I hope your well today.

level specifies at what threshold to start acquiring or generating samples. Specify this value in the units of the measurement or generation. Use slope to specify on which slope to trigger at this threshold. 

So the answer to your question depends on what type of tasking your doing - current or voltage?

and the sensitivity is based on the card (hardware) spec. All the task is doing is continously acquiring but only passing the trigger signal when the value read is above/below threshold. 

A nice example of where you'd use this vi would be lets say in a boiler. When the temperature (AI task) reaches a certain theshold (level) say 100c we want to acquire the next X samples and log the data to file, so incase of meltdown we'd have the post-sample data to see if the system acted correctly.

Does this help?