Hi Emil, With UHD 4.0, this works. And, the latest FPGA images from Ettus include the Replay block on the X310 (in the past, this was just for the N310) so you don't even have to build your own image. And, the latest FPGA images provide access to the full 1GB ram such that you could store arb waveforms for 2 channels with memory depth of 125M samps for each channel.
I verified that I could play 4 channels at 125 MS/s from the UHD 4.0 Replay block on the N310. I believe that I also verified 2 channels at 200 MS/s on the X310, but I don't remember for certain. Rob On Tue, Oct 6, 2020 at 7:00 AM Emil Bjelski via USRP-users < usrp-users@lists.ettus.com> wrote: > Hi All, > > I am investigating the option to stream samples from RFNOC_REPLAY block to > two UBX-160 MHz cards with full speed (i.e. 200 Msps for each board). > I would also like to support timing control for both of these two > transmissions. > > I am planning to use new RFNOC architecture and UHD 4.0. > However, before diving deeper I would like to hear from you if this is > possible to be done in straightforward manner with the newest RFNOC > developments. > > I see from the previous posts > ( > http://ettus.80997.x6.nabble.com/USRP-users-transmitting-on-two-channels-with-replay-block-td13915.html > ). > That with older RFNOC design and UHD 3.xxx streaming from RFNOC was > limited to a single UBX radio. > Meaning that an FPGA image with 2 Replay blocks was needed in order to > stream samples to two UBXs radios. > > What would be the easiest way to proceed with new UHD 4.0? > > Thanks in advance on the answers, > > Emil > _______________________________________________ > USRP-users mailing list > USRP-users@lists.ettus.com > http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com >
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