Hi All, Can anyone having successful experience with X310 + two BasicRX Daughterboards confirm that such a setup works? We can make it work for the following settings: i) X310 + one BasicRX, ii) X310 + two BasicTX, iii) X310 + two SBX for both TX and RX, iv) two N210 + MIMO cable + two BasicRX. But we are not able to make it work for X310 + two BasicRX. We tried different UHD versions (4.2, 3.15, etc.) and got no luck.
Any suggestions would be appreciated! Hua On Tue, Apr 19, 2022 at 10:44 PM Zeng, Huacheng <huacheng.z...@gmail.com> wrote: > Below is a more detailed description of our issue. > > 1. We have an X310 with two BasicRX boards installed (no BasicTX). We > tried to read the two data streams from X310 on a computer at a sampling > rate 5Msps. The computer displays "OOOOOOOOOOOO" overflow constantly. We > tried other sampling rates such as 1Msps and 10Msps, the observation is the > same. > > We found that the LED lights on the X310 panel are abnormal. When X310 > works in RX mode, the two LED lights (RF A's RX2 LED and RF B's RX2 LED) > should be on, but we observed they were flashing. Also, the LINK LED should > be on in RED, but we observed that it was flashing in ORANGE. > > We reloaded the FPGA image, but the problem is consistent. > > 2. We removed BasicRX from X310's RF B channel, and tested one data stream > from X310 RF A's channel, it works (no overflow). We are sure that the two > BasicRX boards have no problem, as they are brand new. > > 3. We removed two BasicRX boards and installed two BasicTX boards on the > same X310. We used GNU RADIO to send two data streams to X310 for signal > transmission. It works well and has no overflow issue. > > We want to test X310's RF B channel, but we do not know how to set the > parameters so that GNU Radio can read the data stream from X310's RF B > channel. Would it be an argument like "subdev=B"? It looks like GNU Radio > always gets data stream from RF A channel if we set the channel number to > 1. Please suggest if it is possible. > > Any suggestion and help would be appreciated! > > > On Tue, Apr 19, 2022 at 6:03 PM Marcus D. Leech <patchvonbr...@gmail.com> > wrote: > >> On 2022-04-19 15:05, Shichen Zhang wrote: >> > Hello everyone, >> > >> > I am doing some experiments and I need to build the 2 by 2 >> > communication using X310 with the BasicRX Daughterboard. I use the >> > X310 as both the transmitter and receiver. I can successfully test the >> > 1 by 1 case, however, when I test the 2 by 2 case, the overflow >> > happened and the program could not be stopped. The RF B channel seems >> > not to work ( LED light for RF B RX not flash). >> > >> > I have attached the flowchart for your reference. >> > >> > Best, >> > SZ >> > >> What is your complete hardware configuration? I assume 2 x BasicRX and >> 2 x Basic TX? >> >> It may just be the case that your computer simply isn't up to the task >> of moving 20Mssp of data in and out of the radio, along with doing 2 x >> FFTs and computing the >> noise sources. >> >> _______________________________________________ >> USRP-users mailing list -- usrp-users@lists.ettus.com >> To unsubscribe send an email to usrp-users-le...@lists.ettus.com >> >
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