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Re: [Discuss-gnuradio] [USRP-users] Is it possible to read the ADC sampl


From: Alex Zhang
Subject: Re: [Discuss-gnuradio] [USRP-users] Is it possible to read the ADC samples before the downconversion from the USRP?
Date: Wed, 15 Aug 2012 14:51:28 -0500

Exactly what I want, thanks!

On Wed, Aug 15, 2012 at 2:48 PM, Josh Blum <address@hidden> wrote:
Marc Epard had a project to burst 100 Msps samples into the SRAM.
https://lists.gnu.org/archive/html/discuss-gnuradio/2011-03/msg00300.html

On 08/15/2012 12:24 PM, Alex Zhang wrote:
> In short, I want to get the samples right after the ADC, without any
> down-conversion, decimation, and filter, etc.
>
> On Wed, Aug 15, 2012 at 11:52 AM, Nick Foster <address@hidden> wrote:
>
>> There is generally no IF on a USRP: it's all baseband, even at the ADC.
>> That said, you need decimation in order to fit the full-speed baseband data
>> over the 1Gbit (or USB) link. There is an existing user FPGA modification
>> somewhere that buffers full-speed baseband data into the SRAM on an N210
>> for later retrieval. What exactly are you trying to do?
>>
>> --n
>>
>> On Wed, Aug 15, 2012 at 9:38 AM, Alex Zhang <address@hidden>wrote:
>>
>>> Hi,
>>>
>>> I want to collect the samples of the USRP at the IF instead of the
>>> baseband, so is there any way to read the ADC samples directly without
>>> downconversion, at the PC?
>>> I do not want to touch the FPGA.
>>>
>>> --
>>>
>>> Alex,
>>> *Dreams can come true – just believe.*
>>>
>>>
>>> _______________________________________________
>>> USRP-users mailing list
>>> address@hidden
>>> http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com
>>>
>>>
>>
>
>
>
>
> _______________________________________________
> USRP-users mailing list
> address@hidden
> http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com
>

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--

Alex,
Dreams can come true – just believe.


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