Hi nicolasp,
it is not possible to set multiple hardware triggers for different analog inputs, but you can do it by software.
You have to capture your analog and digital inputs and synchronize them.
On this page you can see how to synchronize multiple acquisitions:
M Series Synchronization with LabVIEW and NI-DAQmx - National Instruments
http://www.ni.com/white-paper/3615/en/
Regards,
Andi