Triggerd data acquisition

[GNS]

Hi,
I m using SCXI 1530 module and is controlled by PCI-MIO-16E-4 device. Using SCXI 1302, I m accessing other lines of DAQ card. I want to acheive digitally triggered data acquisition. For this I m connecting triggering signal to PFI0 line and giving a single plulse and want to start acquisition on rising edge. Few doubts are there. PLz clear the following...

1. I m using AI Start and AI config VIs. Can u plz let me know where and how do we specify that we are giving trigger to PFI0 line only. can we trigger on any other line too? How to acheive this.

2. There is a problem. The acquisition becomes unpredictable irrespective of any triggering signal on PFI0 line. Sometimes I want to turn a 5V suply at triggeing time and I want to use as
a triggering signal, it is not working consistently. The pulse trains it is accepting. I want to give a single pulse. Will it work.?
Plz clear my these doubts. I need thsee all for my developments. It's urgent.

Regards

GNS

[JoshuaP]

Start off by trying one of the digital trigger shipping examples like: Cont Acq&Graph (buffered) D-Trig.vi Don't worry about the data, just make sure you can make it trigger. The only thing you need to do is use AI Start.vi and wire Digital A into the trigger type and set the edge to rising or falling. Next, wire your trigger to PFI 0, because it is the default digital trigger line. If you wanted to use a different line for the trigger wire up the analog chan & level input and set the channel to PFIn or RTSIn or GPCTR0. Replace n with the correct pin number.

Note: These triggers are not designed for you to connect 5V and then disconnect 5V. You need a CMOS/TTL signal that has a 50nS rise or fall time. That means you need to pull the line to 5V and then
pull it down to 0V (not just float). If the line is floating you will get random triggers.

I would also recommend looking at the help for AI Start.vi. It is very helpful and explains all of this information.

I hope this helps.

Joshua