Hello Eric,
Although much of the hardware appears to indicate that this will work, it turns out that daisy chaining of PXI Express chassis to PXI-1 chassis or vice versa using purely MXI Express is not available at this time. This is due to architectural differences between PXI Express and PXI-1 technology.
The x4 MXIe link from the NI-8353 to the PXIe-1062Q chassis with the PCIe-8372 is valid. Using the PXI-8360 in the PXI-1056 chassis is also valid being that it is PXI-1 compatible. However, daisy chaining the 1056 to the 1062Q with MXI Express is where the issue lies.
It turns out that the information given to you from the sales dept and the KB is incorrect. The sales dept has access to the same resources that you have available so it is quite possible that they saw the same KB, which led them to believe this. This is a mistake on our part, and I apologize for this inconvenience. I highly recommend that you contact your sales representative referencing this forum response.
Here are a couple suggested solutions if a second chassis is still needed for your application:
Instead of using two PXI-8360s and a x1 MXIe cable to daisy chain from the 1062Q to the 1056, use a MXI-4 solution instead:
<a href="
http://sine.ni.com/nips/cds/view/p/lang/en/nid/13179" target="_blank">
http://sine.ni.com/nips/cds/view/p/lang/en/nid/13179</a> - copper link
<a href="
http://sine.ni.com/nips/cds/view/p/lang/en/nid/13180" target="_blank">
http://sine.ni.com/nips/cds/view/p/lang/en/nid/13180</a> - fiber link
This will allow you to daisy chain the PXI-1 chassis to the PXIe chassis. Please note that the MXI-4 daisy-chain solution is valid if the PXIe chassis is connected to the host and the PXI-1 chassis is a slave to the PXIe chassis. The throughput is also going to be limited compared to x1 MXI Express link that you were attempting to make so I suggest to keep all high throughput cards in the 1062Q chassis if possible. This chassis does still have the x4 link to the host.
If you need more throughput, then perhaps switching the 8372 to a 8362 in the host might be another alternative. This would sacrifice the x4 link to the 1062, but you would still have a x1 link to each chassis in a star configuration.
There might be other alternatives not listed here that would still be feasible which is why I suggest for you to discuss this with your sales representative.
Once again I apologize for this inconvenience, and I am sure that the sales force will work with you on a solution to this problem.
Regards,
Mike Torba
PXI Platform Product Support Engineer