Connect Multiple USRP to one PC

[Romaro]

Dear All 

I Need your kindly Support regarding how to Communicate with many NI USRP RIO 2944 even i have only on PXIe connection or in other words how can i Connect many USRP 2944 to one PC ?

[Stop_Luke_and_Listen]

Hi RamyElamrawy,

You will need separate PXI MXI Express interfaces for each NI USRP 2944 that you want to connect to the PXI system.

[Romaro]

So is it applicable to connect one node to PC and other nodes as a Cascaded from that node or what? as  i need to Implement MIMO System Over 2944 USRP

[Robert__R · Accepted solution]

RamyElamrawy,

The typical configuration is to use a PXIe chassis with PXIe-8374 modules to connect to the USRP-2944.  The PXIe-8374 and USRP-2944 each have one x4 cable connector, so it takes one PXIe-8374 (and 1 x4 cable) per USRP-2944.  You may be able to use a PCIe-8371 instead of a PXIe-8374, but that's not typical.

Another option is to use a CPS-8910.  It lets you connect up to 8 USRP-2944s to a x8 PXIe-8384 (or PCIe-8381, though that's not really suggested or tested).  You should use a fiber cable or a 2m copper cable for the x8 link.

Note that you need to pay attention to bandwidth usage as you connect multiple devices onto the same bus.  The x8 link is gen 2 PCIe, so it can support 4 USRP devices at full bandwidth.  I'm not familiar enough with them to say what affect additional devices will have.

- Robert