From a06ad9c753a9a301367fc505f18c4bd6e5ef7d7d Mon Sep 17 00:00:00 2001 From: Paul David Date: Mon, 18 Apr 2016 15:52:54 -0700 Subject: docs: Added information for specifying a second interface on the X-series USRP --- host/docs/usrp_x3x0.dox | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/host/docs/usrp_x3x0.dox b/host/docs/usrp_x3x0.dox index f57ec783d..da5b3b91a 100644 --- a/host/docs/usrp_x3x0.dox +++ b/host/docs/usrp_x3x0.dox @@ -131,6 +131,23 @@ Installation instructions for this interface are available on the official Intel The LEDs on the front panel can be useful in debugging hardware and software issues (see \ref x3x0_hw_fpanel) +### Dual 10 Gigabit Ethernet + +In order to utilize the X-series USRP over dual 10 Gigabit Ethernet interfaces, ensure +either the XG or XGS image is installed (see \ref x3x0_load_fpga_imgs_fpga_flavours). +In addition to burning the prerequisite FPGA image, it may also be necessary +to tune the network interface card (NIC) to eliminate drops (Ds) and reduce overflows (Os). +This is done by increasing the number of RX descriptors (see \ref transport_udp_linux). + +The benchmark_rate tool can be used to test this capability. +Run the following commands to test the X-series USRP over both 10 Gigabit +Ethernet interfaces with the maximum rate of 200 Msps per channel: + + cd /lib/uhd/examples + ./benchmark_rate --args="type=x300,addr=,second_addr=" --channels="0,1" --rx_rate 200e6 + +The second interface is specified by the extra argument second_addr. + \subsection x3x0_hw_pcie PCI Express (Desktop) Important Note: The USRP X-Series provides PCIe connectivity over MXI cable. -- cgit v1.2.3