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Today's Topics:
1. Re: is there any daughterboard which has two TX ports?
(Marcus D. Leech)
2. Re: is there any daughterboard which has two TX ports?
(Dan CaJacob)
3. Re: is there any daughterboard which has two TX ports? (gang li)
4. Re: is there any daughterboard which has two TX ports?
(Marcus D. Leech)
5. E1XX updates for dreaded Ssssssss (Philip Balister)
6. Re: E1XX updates for dreaded Ssssssss (Alex Gladd)
7. E1XX update additional step ([email protected])
8. BPSK using GRC (ZaInzAiN Jj)
9. Re: BPSK using GRC (Mike Jameson)
10. Re: BPSK using GRC (Mike Jameson)
----------------------------------------------------------------------
Message: 1
Date: Fri, 29 Mar 2013 12:01:47 -0400
From: "Marcus D. Leech" <[email protected]>
To: [email protected]
Subject: Re: [USRP-users] is there any daughterboard which has two TX
ports?
Message-ID: <[email protected]>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
On 03/29/2013 11:54 AM, gang li wrote:
> Hi, all,
>
> I am wondering whether there are any daughterboards with more than one
> TX ports which can transmit simultaneously? Or i have to install two
> daughterboards to get two TX ports on one USRP? Which is feasible?
> Thanks.
>
> Best,
> Gang
>
Even if there were, you'd need the motherboard-DAC and digital logic to
"feed" it. The only USRP1 that has two sets of independant DAC/ADC is
the USRP1. But there's no "doublewide" daughtercard.
I assume you want two entirely independant TX channels. If all you
want to do is just feed two antenna, use an analog splitter.
--
Marcus Leech
Principal Investigator
Shirleys Bay Radio Astronomy Consortium
http://www.sbrac.org
------------------------------
Message: 2
Date: Fri, 29 Mar 2013 12:06:06 -0400
From: Dan CaJacob <[email protected]>
To: gang li <[email protected]>
Cc: USRP List <[email protected]>
Subject: Re: [USRP-users] is there any daughterboard which has two TX
ports?
Message-ID:
<camomjoc45zryrscbxf-ds_aterojg2ucwfyo8tjzejhatrm...@mail.gmail.com>
Content-Type: text/plain; charset="utf-8"
LFTX can transmit out two ports simultaneously - I and Q separately.
Very Respectfully,
Dan CaJacob
-- This email contains sensitive proprietary and confidential information.
The technical data contained herein is/may be controlled under the U.S.
International Traffic in Arms Regulations (ITAR) and may not be exported to
a Foreign Person, either in the U.S. or abroad, without the proper
authorization by the U.S. Department of State. --
On Fri, Mar 29, 2013 at 11:54 AM, gang li <[email protected]> wrote:
> Hi, all,
>
> I am wondering whether there are any daughterboards with more than one
> TX ports which can transmit simultaneously? Or i have to install two
> daughterboards to get two TX ports on one USRP? Which is feasible?
> Thanks.
>
> Best,
> Gang
>
> _______________________________________________
> USRP-users mailing list
> [email protected]
> http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com
>
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Message: 3
Date: Fri, 29 Mar 2013 12:10:03 -0400
From: gang li <[email protected]>
To: "Marcus D. Leech" <[email protected]>
Cc: "[email protected]" <[email protected]>
Subject: Re: [USRP-users] is there any daughterboard which has two TX
ports?
Message-ID:
<CAKro2L3PYa+XpSV6gf=w1u-xkxp5vwu-jzxspfvofnsfcf6...@mail.gmail.com>
Content-Type: text/plain; charset="iso-8859-1"
Thanks for the reply. What i want to do is to make a two antenna phased
array on one usrp. So i need two TX channels. Is that possible? Has anybody
tried the same work? Thanks.
Gang
On Fri, Mar 29, 2013 at 12:01 PM, Marcus D. Leech <[email protected]> wrote:
> On 03/29/2013 11:54 AM, gang li wrote:
>
>> Hi, all,
>>
>> I am wondering whether there are any daughterboards with more than one
>> TX ports which can transmit simultaneously? Or i have to install two
>> daughterboards to get two TX ports on one USRP? Which is feasible?
>> Thanks.
>>
>> Best,
>> Gang
>>
>> Even if there were, you'd need the motherboard-DAC and digital logic to
> "feed" it. The only USRP1 that has two sets of independant DAC/ADC is
> the USRP1. But there's no "doublewide" daughtercard.
>
> I assume you want two entirely independant TX channels. If all you want
> to do is just feed two antenna, use an analog splitter.
>
>
>
> --
> Marcus Leech
> Principal Investigator
> Shirleys Bay Radio Astronomy Consortium
> http://www.sbrac.org
>
>
>
>
> ______________________________**_________________
> USRP-users mailing list
> [email protected]
> http://lists.ettus.com/**mailman/listinfo/usrp-users_**lists.ettus.com<http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com>
>
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Message: 4
Date: Fri, 29 Mar 2013 12:15:53 -0400
From: "Marcus D. Leech" <[email protected]>
To: gang li <[email protected]>
Cc: "[email protected]" <[email protected]>
Subject: Re: [USRP-users] is there any daughterboard which has two TX
ports?
Message-ID: <[email protected]>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
On 03/29/2013 12:10 PM, gang li wrote:
> Thanks for the reply. What i want to do is to make a two antenna
> phased array on one usrp. So i need two TX channels. Is that possible?
> Has anybody tried the same work? Thanks.
>
> Gang
>
>
You could do it with a USRP1 and two daughtercards, although there's no
support for "timed commands" on USRP1, so getting the LOs to have
zero phase offset wouldn't be possible, so you'd need to calibrate
your array.
Or a single other-type of USRP with LF_TX or BASIC_TX, but if you wanted
it to be upconverted to another frequency (outside of the frequency band
available on the BASIC_TX/LF_TX), you'd need to use an external
upconverter, and ideally, it should be phase-synchronous itself.
--
Marcus Leech
Principal Investigator
Shirleys Bay Radio Astronomy Consortium
http://www.sbrac.org
------------------------------
Message: 5
Date: Fri, 29 Mar 2013 14:37:39 -0400
From: Philip Balister <[email protected]>
To: "[email protected]" <[email protected]>,
GNURadio Discussion List <[email protected]>
Subject: [USRP-users] E1XX updates for dreaded Ssssssss
Message-ID: <[email protected]>
Content-Type: text/plain; charset=ISO-8859-1
I have pushed updates into the E1XX package feeds that should resolve
the Sssss some people have been seeing. Here is a quick summary of the
changes:
* UHD 3.5.2 (includes CBX)
* Updated kernel (fpga interface timing change, Add support for CIFS
and Multicast)
* GnuRadio 3.6.4.1
You can install these with:
# opkg update
# opkg upgrade
while you are connected to the internet.
Philip
------------------------------
Message: 6
Date: Fri, 29 Mar 2013 16:20:28 -0400
From: "Alex Gladd" <[email protected]>
To: "'Philip Balister'" <[email protected]>,
<[email protected]>
Subject: Re: [USRP-users] E1XX updates for dreaded Ssssssss
Message-ID: <004701ce2cba$dac36220$904a2660$@com>
Content-Type: text/plain; charset="us-ascii"
We just updated one of our E110s and now it no longer finishes booting.
It gets to the point in the boot cycle where it loads the E110 FPGA image
and says "-- Configuration complete", then it appears that the system halts.
I stop receiving anything over the serial console and the Ethernet port
lights on the E110 go out.
I think my only option at this point is to pull the power plug, which will
likely compound our problems by corrupting my SD card :(
Any help would be greatly appreciated.
Thanks,
~Alex
-------------------------
Alex Gladd
Staff Engineer
Raytheon BBN Technologies
-----Original Message-----
From: Philip Balister [mailto:[email protected]]
Sent: Friday, March 29, 2013 2:38 PM
To: [email protected]; GNURadio Discussion List
Subject: [USRP-users] E1XX updates for dreaded Ssssssss
I have pushed updates into the E1XX package feeds that should resolve the
Sssss some people have been seeing. Here is a quick summary of the
changes:
* UHD 3.5.2 (includes CBX)
* Updated kernel (fpga interface timing change, Add support for CIFS and
Multicast)
* GnuRadio 3.6.4.1
You can install these with:
# opkg update
# opkg upgrade
while you are connected to the internet.
Philip
_______________________________________________
USRP-users mailing list
[email protected]
http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com
------------------------------
Message: 7
Date: Fri, 29 Mar 2013 19:40:14 -0400
From: [email protected]
To: [email protected]
Subject: [USRP-users] E1XX update additional step
Message-ID: <[email protected]>
Content-Type: text/plain; charset="utf-8"
After running upgrade, reboot the unit so you are running on the new kernel.
Philip
--
Sent from my Android phone with K-9 Mail. Please excuse my brevity.
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Message: 8
Date: Sat, 30 Mar 2013 19:01:16 +0800 (SGT)
From: ZaInzAiN Jj <[email protected]>
To: "[email protected]" <[email protected]>
Subject: [USRP-users] BPSK using GRC
Message-ID:
<[email protected]>
Content-Type: text/plain; charset="iso-8859-1"
Dear All,
I use GRC to implement data transfer text files using BPSK modulation. BPSK
modulation block on the Tx and Rx, constellation, and FFT display on the
attachments.
The problem in this system, in receiver the contents of text file is null.?Is
there something wrong with BPSK ?block systems in Tx and Rx?
Thanks,
Best Regards,
Zai
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Message: 9
Date: Sat, 30 Mar 2013 11:09:50 +0000
From: Mike Jameson <[email protected]>
To: ZaInzAiN Jj <[email protected]>
Cc: "[email protected]" <[email protected]>
Subject: Re: [USRP-users] BPSK using GRC
Message-ID:
<CAJcjmiRU1up3cEec3LPP0Q=ove0299d9w7wzcxe7jtx_nqf...@mail.gmail.com>
Content-Type: text/plain; charset="iso-8859-1"
Hi, differential encoding is disabled on tx side but enabled on rx side.
Hope that fixes things.
Mike
--
Mike Jameson M0MIK BSc
Radio Communications Technology Specialist
Email: [email protected]
Web: http://scanoo.com
On 30 March 2013 11:01, ZaInzAiN Jj <[email protected]> wrote:
> Dear All,
> I use GRC to implement data transfer text files using BPSK modulation.
> BPSK modulation block on the Tx and Rx, constellation, and FFT display on
> the attachments.
>
> The problem in this system, in receiver the contents of text file is null. Is
> there something wrong with BPSK block systems in Tx and Rx?
>
> Thanks,
> Best Regards,
>
> Zai
>
> _______________________________________________
> USRP-users mailing list
> [email protected]
> http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com
>
>
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Message: 10
Date: Sat, 30 Mar 2013 11:21:00 +0000
From: Mike Jameson <[email protected]>
To: ZaInzAiN Jj <[email protected]>
Cc: "[email protected]" <[email protected]>
Subject: Re: [USRP-users] BPSK using GRC
Message-ID:
<cajcjmit1xkt6psy6l0zxpr5+rwgvsr8bgdd0kz5nzenmg5k...@mail.gmail.com>
Content-Type: text/plain; charset="iso-8859-1"
Hi again, you are also not gray coding on tx but you are on rx. FYI, a
further tweak for efficiency is to disable 'Pad for USRP' which is no
longer required for UHD implementations and was only applicable to USB USRP
devices anyhow.
Mike
--
Mike Jameson M0MIK BSc
Radio Communications Technology Specialist
Email: [email protected]
Web: http://scanoo.com
On 30 March 2013 11:09, Mike Jameson <[email protected]> wrote:
> Hi, differential encoding is disabled on tx side but enabled on rx side.
> Hope that fixes things.
>
> Mike
>
> --
> Mike Jameson M0MIK BSc
> Radio Communications Technology Specialist
> Email: [email protected]
> Web: http://scanoo.com
>
>
> On 30 March 2013 11:01, ZaInzAiN Jj <[email protected]> wrote:
>
>> Dear All,
>> I use GRC to implement data transfer text files using BPSK modulation.
>> BPSK modulation block on the Tx and Rx, constellation, and FFT display on
>> the attachments.
>>
>> The problem in this system, in receiver the contents of text file is
>> null. Is there something wrong with BPSK block systems in Tx and Rx?
>>
>> Thanks,
>> Best Regards,
>>
>> Zai
>>
>> _______________________________________________
>> USRP-users mailing list
>> [email protected]
>> http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com
>>
>>
>
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------------------------------
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------------------------------
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