Indeed the E310 RFFE chip has clocking restrictions so that two channels are limited to less than 32MHz.
I’m not certain about the E320. Sent from my iPhone > On May 7, 2021, at 10:45 AM, Rob Kossler <[email protected]> wrote: > > > 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] > _______________________________________________ > USRP-users mailing list -- [email protected] > To unsubscribe send an email to [email protected]
_______________________________________________ USRP-users mailing list -- [email protected] To unsubscribe send an email to [email protected]
