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Re: [Discuss-gnuradio] Setting the XCVR2450 Bandwidth

From: Josh Blum
Subject: Re: [Discuss-gnuradio] Setting the XCVR2450 Bandwidth
Date: Wed, 22 Aug 2012 17:25:43 -0700
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:14.0) Gecko/20120714 Thunderbird/14.0

On 08/22/2012 06:11 AM, Michael Hill wrote:
> Thanks Josh,
> I've still been toying with this though.. and aren't really having any
> success.
> E.g. if I pick a Tx bandwidth of 24MHz.. and transmit
> and use 8bit I&Q samples transmitted at 50MHz.. then shouldn't I see some
> signs of the filter?
> What should I be looking for on my spec amp?

Just transmit some wideband noise and zoom out on the spectrum analyzer.
You should easily see the filter profile.

(Flow graph attached).

> I assume by baseband filter, that you mean this is a digital filter that
> applies what I send from the CPU to the USRP..

This is an analog baseband filter on the XCVR 2450.


Attachment: xcvr2450_filtered_noise.grc
Description: application/gnuradio-grc

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