Stephen, In order to generate two pulse trains on the two counters of your 6115, then you will need to provide a trigger to start both of these counters simultaneously. The counters on the 6115 are controlled via the DAQ-STC counter/timer chip.
In order to perform these operations you will need to use the more advanced counter/timer VIs in the LabVIEW palettes. I would recommend taking a look at some of the shipping examples, such as Generate Pulse Train (DAQ-STC), in order to get a better understanding of how a single pulse generation works. Also, please take a look at the following websites to get a little more information as well: Triggering Multiple Counters with a Single Pulse http://exchange.ni.com/servlet/Redirect?id=10358279 Using the Hardware Start Trigger for Single Pulse Generation http://zone.ni.com/devzone/conceptd.nsf/webmain/7B2CAD8DD522049386256802007B8B51?opendocument If you have any other questions then please let us know. Regards, Michael H Applications Engineer National Instruments
