USB streaming requires the ability for a device to process multiple streams at the same time and move data quickly to and from PC memory.
You may experience issues with USB streaming because, unlike PCI designs, USB and other external buses such as Ethernet and wireless lack the bandwidth and latency specifications of internal buses. USB, Ethernet, and wireless data acquisition devices are limited by a host-driven protocol with no DMA channels. The following tips may improve streaming performance:
Ensure you are using the
device with USB 3.0/USB (SS) to maximize streaming throughput. You can check which USB you are using by opening the
Use the Producer/Consumer design pattern. Refer to
and enter the Info Code
for more information.
Shut down any non-critical process like anti-virus scanners, as they can slow down streaming throughput.
Keep the number of streams to the minimal amount required for your application to maximize throughput.
Use a USB controller with greater compatibility with the
USRP-2900/2901. NI recommends Intel Series 7, 8, and 9 USB controllers.