DAQ setup for 5133

[alex.]

I am trying to setup 2x5133 as the attached drawing, connect the 2 PF1 together as outside trigger source. The 4 channels can collect data at same time with 20ms time interval at 100MHz. Then the data will be sent back to laptop by 2 usb cable.

May I know if the design is valid, thanks.

[JÞB]

 I'd use a square wave 0-5 V into the trigger.  The signal at PF1 is digital not analog so you can only trigger on L-H or H-L transitions.  Any "0 crossing" could mean you are outside the -0.5 to +5.5 V input range and could damage the internal circuit.