How to use multiple channels to sample one signal

[Anton]

I would like to use all channels on an AI-110 to sample the same signal in order to increase my sampling rate.  (I have spare channels, not spare $$.)  In hardware the channels are read sequentially so in theory I should be able to do this, but I'm having trouble reconstituting the signal.  If I use FP Reads the timestamps seem to indicate the time of the read, not the time of the A/D conversion, so I can't tell which sample was taken last.  FP-Advise on change seems ill-suited as well since consecutive samples may be the same on a certain channel, but the signal may have varied in the mean time on the other channels.

Any ideas how this might be done otherwise?  The VI will run embedded on a cFP-2020 controller with LabViewRT v. 6.1.1.

Thanks,

Anton

[Wayne.C]

Anton,

I understand what you are trying to do and do not think it can be done with a single module.  The timestamp on the FP-Read is all about when the vi returned the data and not when the A/D conversion occured.  I just don't think that the A/D converter can keep track of the conversion time. 

If you had multiple AI-110 modules, you could in theory connect your signal to individual channels on multiple modules and then sequence through the modules.  The problem here would be the ground loops.