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Re: [Discuss-gnuradio] ground the USRP1

From: Matt Ettus
Subject: Re: [Discuss-gnuradio] ground the USRP1
Date: Wed, 30 Dec 2009 11:58:24 -0800
User-agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv: Gecko/20091209 Fedora/3.0-4.fc12 Thunderbird/3.0

On 12/30/2009 11:50 AM, kdag wrote:

On Wed, Dec 30, 2009 at 2:19 PM, Matt Ettus <address@hidden
<mailto:address@hidden>> wrote:

    On 12/30/2009 03:34 AM, Johnny Vestergaard wrote:


        I recently acquired a USRP1 and are looking to improve reception of
        the TVRX board (i know it's a cable tuner and has noise "issues").
        I noticed the GND pins on the USRP1 board and are wondering if i am
        supposed to ground the board through these pins?

    No, those will not change anything.

I'm also interested on the topic of lowering the noise fig on the TVRX,
is that somehow possible?

The only way to lower the noise figure on the TVRX is to put an amplifier in front of it. The noise figure is only about 8-9 dB, though, so it isn't that bad.


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