Hi Martin, I am concerned that these devices, E3xx, cannot handle 2 channels at 56 MS/s (or 61MS/s). My understanding (but I am not 100% sure) is that these devices can handle 1 channel at those rates, but that the max rate for 2 channels is 30.72 MS/s. Rob
On Fri, May 7, 2021 at 9:41 AM Martin <[email protected]> wrote: > Hi, > > Do you have experience with high bandwidth capture on E310 or E320? > > We want to use an E310 or E320 for 56 MSPS (or 61.44 MSPS) dual channel > RX captures. > We want to capture into a circular buffer and after a certain signal > signal level is observed set a time to stop capturing after 0.3 seconds. > So we only use the last 0.3 second of captured data. > > We are thinking of using a E320. This has a high speed SFP+ 10 gbit port. > Can it stream 2 channel 56 MSPS data to a host-PC continuously to a > host-PC? Or is the ARM processor a bottleneck, like on the E310, which > seems to be limited to max 16MSPS due to the limited arm processor speed. > And can it stream that fast with its default FPGA firmware image, so > there would be no need for RFNoc work and expensive Vivado license. > > And if we do need the Xilinx vivado license. Which version do we need? > > Alternatively we could try to use the E310 which has a smaller FPGA that > is supported by the free webpack of vivado. > Because it does not have a 10 gbit ethernet we would have to capture to > memory. > I have read that the E310 arm processing is not able to keep up with > more then 16 MSPS captures. So just streaming to the ARM memory in the > E310 would not work. > But if we could someway capture to the 512 MB DDR ram on the FPGA side > (use it as a circular buffer) and afterwards slowly move it to the arm > and from there to the host-PC then that would be fine. > > Alternatively I heard that high datarate (56 MSPS) capture on E310 is > possible in some way using RFNoc. Is that true? How would that work. > > It would help me a lot if you give me some hints or tell me about your > experience of high bandwidth capturing on E3XX devices.. Even if you do > not know all the answers. > > With best regards, > > Martin Dudok van Heel > > _______________________________________________ > USRP-users mailing list -- [email protected] > To unsubscribe send an email to [email protected] >
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