Hi,
I am trying to receive on two different centre frequencies (2.475e9 and 2.48e9)
using the two receiver chains on B210. Since they are close by, I thought can
receive them by setting the “dsp_freq” parameter.
Case 1:
Subdev: A:A or A:B
Nchannel : 1
Centre Frequency: 2.475e9
Sampling Rate:
Good morning,
I am attempting to run the txrx_loopback_to_file example with the following
hardware:
USRP N320 @ 192.168.20.2 10g sfp+ port 1
USRP N321 @ 192.168.10.2 10g sfp+ port 0
Connection between RF1 TX/RX on N321 to the RF1 RX on N320.
My command to run is:
./txrx_loopback_to_file \
--t
Hello,
I just setup an E320 with a 1Gbps SFP. I've updated the filesystem, FPGA load
(with the "1G" build"), etc and am using UHD 4.0. uhd_usrp_probe seems happy,
and I created a gnuradio flowgraph and streamed samples ok. I did not test
throughput, though.
What concerns me is that when I conne
Saptarshi,
I'm not entirely sure I fully understand what you are doing. You
probably need to provide some more details.
However, in general, depending on what you master-clock-rate is,
doing a 5MHz shift in the DSP does not make much sense if your
sample-rate and your analog bandwidth are only
**Saturday 12 December 2020 16:00 UTC**
Subject: Transmit / Receive switching and station control
Presenter: Gavin Jacobs VE7GSJ
Agenda:
* Requirements for TX/RX switching
* VE7GSJ Solution (hardware & GNURadio Companion)
* Demo on 2m repeater
See the details at https://wiki.gnuradio.org/index.
Hi Jim - Just for completion: Try loading the "HG" image -- again if
necessary: 1 Gb on SFP+ port 0 and 10 Gb on SFP+ port 1. Regardless of
whatever Linux / ifconfig / ethtool shows, the SFP+-based networking will
not work if the link speeds are not met on both ends. All USRPs will set
the correct
Hi Michael,
Thanks for the response. I did load the FPGA image again using "1G". My options
are "1G", "XG", "AA". I still have the issue where linux/ethtool is still
reporting a 10Mbps / half-duplex link on sfp0. Again, I'm able to stream data,
so maybe things are working fine.
Thanks,
Jim
__
Hi Julian,
Thanks for your reply.
I am basically trying to receive signals of BW 5MHz at two different centre
frequencies (2.475GHz and 2.48GHz) using the two subdevs of the B210.
The master clock rate gets set to 20MHz which makes me assume that the analog
bandwidth for the USRP source is 20 M
Hi Jim - Yes you are correct in the E320 FPGA image options: 1G, XG, and
AA. I booted up my E320 to verify; forgot that there is just a single SFP+
port on the E320 ... I've been working with X310's and N310's for a while
now, both of which have 2 SFP+ ports!
Since I'm on my E320, I tried out the
Thanks again for the response and information. I'm seeing pretty much what you
are. If I make a gnuradio flowgraph with a UHD:Usrp_Source connected to a
Null_Sink, I can set the sample rate to 4MHz without overflows. With a sample
rate of 5MHz, I see "O" repeating in the console. So the maxi
Saptarshi,
Ok, I see, you did not set set analog filter bandwidth of your USRP to 5
MHz but your signal has 5 MHz bandwidth. This, in combination with the
20 MHz MCR should then be absolutely fine.
I'm still not sure how you are trying to detect your signal. Maybe you
could share the relevan
Hello again,
Can anyone shed some light on this issue? I found a similar reported issue
here that doesn't seemed to have been resolved either:
http://ettus.80997.x6.nabble.com/USRP-users-ERROR-RPC-TDC-Failed-to-reset-td15582.html
Thank you,
Cameron
On Sat, Dec 5, 2020 at 5:28 PM Cameron Matson
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