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From: pollon on 4 Aug 2008 02:40
Hi. i have aproblem with signal express. when i try to acquire three different kind of signals with three different modules on my cDaq 9172 i recive this notice: the task is riserved by another one. Now my question is: Can i use three modules simultaneaus with signal express? and with labView?
From: mickeyw on 4 Aug 2008 09:10
It is possible to acquire different signals via different modules in signal express (I simulated it with a thermocouple and a sine wave). When you set up the first channel with say a thermocouple in signal express, click the add button and add your new analogue signal., for example the sine wave. To add a digital module, you would have to add a new step after your analogue input.
This process is easier to set up in labview using a daqmx read/write task (see the labview examples) but all the channels would have to be read in the same VI with the same sample clock in order to get them synchronised.
I hope this answers your query,
From: LiciaP on 5 Aug 2008 04:10
I confirm that it's possible to acquire multiple signals both in LabVIEW and in Signal Express. However, you can't use multiple tasks but you must include all the specific channels in only one task for acquisition (for example, in LabVIEW or in MAX you create a task for analog acquisition adding more than one channel). The reason is well explained in this <a href="http://digital.ni.com/public.nsf/allkb/04BEDD9E9E91ED3486256D180048116D?OpenDocument" target="_blank">KB</a>.
You can find detailed explanation on how to acquire data from multiple modules in cDAQ in Signal Express in this second <a href="http://digital.ni.com/public.nsf/allkb/7F890A8413C0544A862573F4006D4E63?OpenDocument" target="_blank">KB</a>.
I hope it's all clear.