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Re: [Discuss-gnuradio] 8 bit samples have an odd spectrum


From: Chris Stankevitz
Subject: Re: [Discuss-gnuradio] 8 bit samples have an odd spectrum
Date: Fri, 11 Jul 2008 11:24:24 -0700
User-agent: Thunderbird 2.0.0.14 (X11/20080502)



Matt Ettus wrote:
Remember that while the ADCs are 12 bits, we carry 16+ bits of precision throughout the signal processing.

Matt,

How do you get 16 bits of precision from a 12 bit ADC? What does 16+ mean? I'm looking at the shorts coming from the USRP and I'm seeing values in the range [-3296 3264] which implies more than 12 bits... curious.

FYI, we supposedly tuned our front end to saturate the ADC 1% of the time.

Thanks,

Chris




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