02-06-2015 02:07 AM - edited 02-06-2015 02:09 AM
Hello,
System contents
We have a system that consists of:
Use cases
Question
Essentially, we have 17 timing-sensitive cards (15 FlexRIOs + 1 function generator + 1 timing card), but only 16 cards can fit in one chassis (because 2 slots are ocupied by the embedded controller and the MXI-Exprress card). So, one of these need to be on the other chassis. The two obvious options then are:
Does it matter which option we go for? Do we get any performance benefits and/or ease of coding either way?
Thanks in advance!
Solved! Go to Solution.
02-06-2015 03:41 AM
02-06-2015 07:22 AM
If all you care about it the clock accuracy, there is an input on the back of the PXIe-1085 for an external 10MHz clock and an output of the 10MHz clock. So everybody can use the same clock.
But you care more about triggering. So I see two real options:
1. Put everything that must trigger each other in the same chassis. This would mean putting the timing source in the second chassis and using the reference clock I/O on the chassis to share clocks.
2. Get a second timing module. The module should have PFI lines so that you can share trigger signals. I would still use the refernce clock I/O on the chassis just to make sure everybody is using the same clock.