We are currently using a TwinRX daughterboard on a X310 USRP. We have had little success using rfnoc-devel branches of UHD (software and FPGA repositories) with the TwinRX card. Using the latest rfnoc-devel code, the TwinRX card only works (i.e., we see our signal coming from the radio) about 10-20% of the time. When it doesn't work, the flowgraph continues to run as if nothing is wrong, but there is no signal present (I/Q samples don't seem valid; they are very close to zero). This issue can also be reproduced with the simplest flowgraph. This issue led us to believe that it is an incompatibility issue between the hardware and the latest rfnoc-devel version. Therefore, we began experimenting with the formal release of UHD: 3.10.3. The daughterboard appears to function correctly with the 3.10.3 release. Is the TwinRX daughterboard supported by RFNOC?
Andrew Adams
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