06-04-2008 05:24 PM
06-04-2008 06:17 PM
06-05-2008 10:11 PM
Hi Stove
Thank you for using our discussion forums.
I am assuming that you are using a single DAQ device.
You can add both of your analog input operations into one task, however you cannot have independent timing, in other words you must sample all your channels at the same rate. Using this method you should be able to do exactly what you described except that you will need to sample your two slower channels at the same rate as the first three channels and discard the extra samples. I would recommend this method and it is how you can effectively sample at two rates.
Your current method of performing your acquisition is ok, however with our DAQ devices you can only have one analog input task running at a time on the same device. Therefore it is not possible to synchronize your operations unless you are using two devices. If you are using two device it is possible to synchronize both tasks, however there are more considerations, such as sharing sample clocks and start triggers.
Chris_K