Analog Triggering using E-series board

[Alan]

Hello. I'm very new to Labview but I'd like to trigger using either a
change in slope or a relative voltage change. Presently, it is
triggered using an absolute voltage value on a rising slope. Is this
possible on an E series DAQ board? Thanks.

Alan

[Scott Seidman]

iliveinatrailerpark@yahoo.com (Alan) wrote in
news:5449f169.0306101304.314dc144@posting.google.com:

> Hello. I'm very new to Labview but I'd like to trigger using either a
> change in slope or a relative voltage change. Presently, it is
> triggered using an absolute voltage value on a rising slope. Is this
> possible on an E series DAQ board? Thanks.
>
> Alan
>

My guess is what you want to do is not possible. One trick would be to
constantly sample and throw away the data while testing for your trigger
condition, and then start saving the data.

Otherwise, you're probably going to need to use an analog differentiator or
an analog high pass filter on your trigger line.

--
Scott
Reverse first field of address to reply

[Sarah Thompson]

Alan,

There are many resources available to you on the Developer Zone to explain triggering concepts and provide example code. Below are two main locations for triggering information.

1. NI Developer Zone > Development Library > Measurement Hardware > Analog Input/Output > Analog Input > Triggering

2. NI Developer Zone > Development Library > Measurement Hardware > Analog Input/Output > Analog Input > Using Occurrences/Events

Have a great day!