2 sequential AI scans

[Ian_C]

Purpose: Creating 2 different tasks to perform 2 sequential scans using Labview 7.0

I am using PCI 6071E card and Labview7.0 to measure analog inputs from voltage-producing sensors. I would like to create 2 different tasks using DAQmx to perform 2 sequesntial scans. The first scan at a high sampling rate between 2 sensors to detect trigger. Once trigger condition is met, a second task kicks in to perform a scan at a lower frequency for say 10 selected sensors (associated with the trigger sensor from first Task).

Can this be done with Labview 7.0 DAQmx? I can't seem to get it working. I get an error message Error -200279. Any suggestions?

[Salvador_Santolucito]

Yes, this should be possible as long as your two tasks do not try to simultaneously access the same channels.

The error you are getting (200279) is related to your buffer size and sample rate. There is are a couple KBs on it:

http://digital.ni.com/public.nsf/websearch/7AD4854943BF344186256D6500807935?OpenDocument

http://digital.ni.com/public.nsf/websearch/001DA4DB6A31CF8886256D33006FA857?OpenDocument