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From: | Bakshi, Arjun |
Subject: | Re: [Discuss-gnuradio] X310 with 2 WBX in full duplex |
Date: | Sun, 19 Nov 2017 00:53:47 +0000 |
Hi,
I've installed the correct uhd/gnuradio/gr-ettus packages now, and constructed the attached flow graph. However, the application hangs up after a second or so. Underflow warnings also appear almost immediately after the flow starts.
Image of flow graph and error attached. GRC file also attached.
An earlier email mentioned: ==== Also you may get underflows depending on your ====
However my sampling rate is pretty low. 1Msps. With 2xN210 I can support ~5Msps tx+rx on this PC.
Any ideas on whats going on, and how to fix it?
Also, what are DUC input/out rates? What should the "analog bandwidth" be set to? Same as sampling rate or 0, or something else? Thank you,
AB From: Bakshi, Arjun
Sent: Monday, November 6, 2017 2:01:16 PM To: Michael Carosino Cc: address@hidden Subject: Re: [Discuss-gnuradio] X310 with 2 WBX in full duplex Thanks for the pointers. I'll look into them soon. I've temporarily moved to another setup. Will report back when I come back the this one.
Thanks,
AB From: Michael Carosino <address@hidden>
Sent: Friday, November 3, 2017 3:38:37 PM To: Bakshi, Arjun Cc: address@hidden Subject: Re: [Discuss-gnuradio] X310 with 2 WBX in full duplex Hi,
I don't believe you need to install Xilinx/vivado/etc - that's only needed if you want to create your own rfnoc blocks (like I did for the transmitter, but ideally you avoid this as its a lot of work!).
You should simply need the UHD rfnoc_devel branch installed w/gnuradio and use the image downloader to download the precompiled image for usrp_x310_fpga_HG
and flash it to the x310. (usrp_x310_fpga_HG contains 2x DDC, 2x DUC, 2x Radios, and 1x DMAFIFO which is all you should need per my previous pictures).
For instructions, see
https://kb.ettus.com/Getting_Started_with_RFNoC_Development#Testing_the_default_FPGA_image_and_building_from_existing_blocks and also flashing instructions here http://files.ettus.com/manual/page_usrp_x3x0.html#x3x0_load_fpga_imgs
On Fri, Nov 3, 2017 at 8:42 AM, Bakshi, Arjun
<address@hidden> wrote:
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result.png
Description: result.png
flow.png
Description: flow.png
test_X310.grc
Description: test_X310.grc
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