There is an example program
which shows how to configure two PXI-407x modules to start their acquisition when receiving the same external trigger. You can extend this programming method for more PXI-407x/4065 modules.
In this example, you need to provide a trigger for an PXI-407x device. To do so, you can use two different sources:
- Another PXI board (for example an X Series Multifunction DAQ board) that is able to route a trigger to one of the PXI Trigger Lines . You will need to configure all your PXI-407x modules to use that PXI Trigger Line as the source of the trigger.
- An external device that connects to each PXI-407x AUX connector using same length cables. You want to use cables that have the same length from the trigger source to the AUX connectors of each PXI-407x to reduce the trigger signal skew between modules.