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Today's Topics:
1. Re: non-symmetric filtering of negative frequencies by
receiver- x300 + ubx-160 (Humphries, James R.)
2. how can i make bench rate test? (Tahsin Mutlu)
3. Re: how can i make bench rate test? (Marcus M?ller)
4. USRP device connection issue (Jalal Shams)
5. Re: USRP device connection issue (Marcus D. Leech)
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Message: 1
Date: Fri, 7 Apr 2017 13:29:47 +0000
From: "Humphries, James R." <[email protected]>
To: Samuel Prager <[email protected]>, "[email protected]"
<[email protected]>
Subject: Re: [USRP-users] non-symmetric filtering of negative
frequencies by receiver- x300 + ubx-160
Message-ID: <[email protected]>
Content-Type: text/plain; charset="utf-8"
Hey Sam,
Are you generating the waveform on the host? Have you tried
pre-pending/appending zeros to the chirp before you transmit (something like 32
zeros before/after waveform)? Filters may distort the few samples in your chirp.
-Trip
From: USRP-users [mailto:[email protected]] On Behalf Of
Samuel Prager via USRP-users
Sent: Friday, April 7, 2017 5:22 AM
To: [email protected]
Subject: [USRP-users] non-symmetric filtering of negative frequencies by
receiver- x300 + ubx-160
Hello,
I am transmitting and receiving a linear fm waveform in loopback, and am
experiencing an issue where negative frequency components are the waveform are
being filtered by the receiver, causing the RX baseband waveform to be band
limited and non-symmetric.
This seems to be occurring at all RF frequencies and independently of the
actual bandwidth of the TX waveform.
I am attempting to synthesize a wide-band stepped chirp signal and this is
making it difficult to coherently combine pulses without having side-lobes blow
up.
Is this something that should be expected? Are there any fixes/ work-arounds? I
am on a recent rfnoc-devel branch of uhd.
I have attached images of the tx and rx waveform (for example at 50 MHz BW,
centered at 800 MHz) ? both spectrum and time-domain signal. I can confirm that
the tx signal is sent properly.
Thank you,
Sam
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Message: 2
Date: Sat, 8 Apr 2017 22:07:13 +0300
From: Tahsin Mutlu <[email protected]>
To: [email protected]
Subject: [USRP-users] how can i make bench rate test?
Message-ID:
<CAD4KPKyPJ_A6=ARN0Q9q8PBy=pyrgvzyei5kf7--q2xn4-p...@mail.gmail.com>
Content-Type: text/plain; charset="utf-8"
hi i want to try do a bench rate test
i have these codes
benchmark_rate_exe --rx_rate 40e6
benchmark_rate_exe --rx_rate 56e6
...etc.
how can i use these code and where can i write this code
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Message: 3
Date: Sat, 8 Apr 2017 22:34:44 +0200
From: Marcus M?ller <[email protected]>
To: [email protected]
Subject: Re: [USRP-users] how can i make bench rate test?
Message-ID: <[email protected]>
Content-Type: text/plain; charset="windows-1252"
Hi Tahsin,
those are /command lines. /I'm afraid you will have to be able to use a
terminal first before you can use our benchmark.
Best regards,
Marcus
On 08.04.2017 21:07, Tahsin Mutlu via USRP-users wrote:
> hi i want to try do a bench rate test
> i have these codes
>
> benchmark_rate_exe --rx_rate 40e6
> benchmark_rate_exe --rx_rate 56e6
> ...etc.
>
>
> how can i use these code and where can i write this code
>
>
> _______________________________________________
> USRP-users mailing list
> [email protected]
> http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com
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Message: 4
Date: Sun, 9 Apr 2017 19:45:53 +0500
From: Jalal Shams <[email protected]>
To: Neel Pandeya <[email protected]>
Cc: usrp-users <[email protected]>
Subject: [USRP-users] USRP device connection issue
Message-ID:
<camnwuyth_2tzamorslnx3ayvgmu39ymil85z8noe933thlh...@mail.gmail.com>
Content-Type: text/plain; charset="utf-8"
Hi all,
I have installed the UHD driver and GNU radio from the following link
https://kb.ettus.com/Building_and_Installing_the_USRP_Open-Source_Toolchain_(UHD_and_GNU_Radio)_on_Linux
Both were installed and I am sharing the screen shots below ( I think I
might be facing ethernet issue when it comes to its speed 10/100 MBs).
Please help me out.
Thanks in advance.
Jalal
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Message: 5
Date: Sun, 09 Apr 2017 11:21:18 -0400
From: "Marcus D. Leech" <[email protected]>
To: [email protected]
Subject: Re: [USRP-users] USRP device connection issue
Message-ID: <[email protected]>
Content-Type: text/plain; charset=windows-1252; format=flowed
On 04/09/2017 10:45 AM, Jalal Shams via USRP-users wrote:
> Hi all,
>
> I have installed the UHD driver and GNU radio from the following link
> https://kb.ettus.com/Building_and_Installing_the_USRP_Open-Source_Toolchain_(UHD_and_GNU_Radio)_on_Linux
>
> <https://kb.ettus.com/Building_and_Installing_the_USRP_Open-Source_Toolchain_%28UHD_and_GNU_Radio%29_on_Linux>
>
> Both were installed and I am sharing the screen shots below ( I think
> I might be facing ethernet issue when it comes to its speed 10/100 MBs).
> Please help me out.
>
>
> Thanks in advance.
> Jalal
>
>
You absolutely, positively, NEED a 1Gbit-capable port or this isn't
going to work. The N2xx series require 1GBit, and the X3xx series
required 1Gbit or
10Gbit ethernet ports.
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