On Fri, Apr 29, 2022 at 8:35 AM Marcus D. Leech <[email protected]> wrote: > > On 2022-04-29 05:28, Anabel Almodovar wrote: > > Good morning, > > I would like to connect two USRP x310 cards to a HP Zbook 15 G3 > > laptop, which has only one RJ45 port. I need it to operate at maximum > > speed (200MS/s), with two 10GB ethernet ports, but I can't find a way > > to do it, is this configuration possible, what would be the right > > option to connect the two x310 to the laptop and what would be its > > maximum speed? > > Thanks in advance. > > Regards, > > Anabel > > > > _______________________________________________ > > USRP-users mailing list -- [email protected] > > To unsubscribe send an email to [email protected] > That laptop has a Thunderbolt 3 port, and there are Thunderbolt 3 10Gig > adapters on the market, but my suspicion is that there's very little > experience with them > in this application. > > Quite apart from that, it's unlikely that your laptop has enough CPU > horsepower and memory bandwidth to support two streams at 200Msps--even > just recording to memory. >
I have used a laptop with both the QNAP Thunderbolt3 adapter <https://www.qnap.com/en-us/product/qna-t310g1s> (1 SFP+ port) and the Sonnet TwinG SFP+ <https://www.sonnetstore.com/collections/ethernet-networking/products/twin-10gsfp-thunderbolt3-edition> (2 SFP+ ports), but I don't have extensive experience with the highest bandwidths. When using a laptop, I've mostly been operating with lower bandwidths such as 25 MS/s (multi-chan). However, today as it happens I used the QNAP at 100 MS/s (single channel Rx only), but had some problems running 200 MS/s. I'm guessing that I did not have something optimized because I was seeing Sequence errors that are common when the OS is short on Rx descriptors. Note that the Thunderbolt 3 link itself is 40Gbps, so theoretically, it could handle 4 10Gbe links. A while ago, my colleague replaced the dual 10Gbe NIC that comes in the Sonnet box with an Intel XL710 which can run 4 x 10Gbe and he was able to get it to work. I don't recall what the data rate limit was. Rob
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