Well that is 80 dB of dynamic range inside the Nyquist zone (at best and let's call it N). I can add a "bit" of increase in dynamic range by downsampling (filter and decimation) and growing the accumulator size by a bit for each decimation by 4. This will increase dynamic range. I don't believe this is happening to a large extent in the N210 unless it is included in you 80 dB number which I believe is you just doing 14 bits of ADC is 80 dB.
Bob On Mon, Sep 23, 2013 at 11:54 PM, Marcus D. Leech <mle...@ripnet.com> wrote: > ** > On 09/23/2013 11:07 PM, bob wole wrote: > > Can somebody please guide me on this ? > > Bob > > > On Fri, Sep 20, 2013 at 4:44 PM, bob wole <bnw...@gmail.com> wrote: > >> I have USRPN210 with WBX and RFX2400. Is there any AGC chip on N210 >> motherboard or WBX, RFX2400 before ADC to utilize the dynamic range of ADC >> ? if yes, which one? If not, then won't the varying input signal (for >> example signal from moving object) to ADC affect the performance of ADC ? >> >> Bob >> > > The ADC on an N210 has over 80dB of dynamic range. If that isn't > enough, then your application can adjust the RF gain to taste. > > Only a subset of applications actually benefit from the usual hardware AGC > schemes, and such schemes are invariably application-specific, so there's > no *automatic* gain control. But your application can dynamically make > gain adjustments as it goes. > > > > > -- > Marcus Leech > Principal Investigator > Shirleys Bay Radio Astronomy Consortiumhttp://www.sbrac.org > > > _______________________________________________ > Discuss-gnuradio mailing list > Discuss-gnuradio@gnu.org > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio > > -- Bob McGwier Owner and Technical Director, Allied Communication, LLC Professor Virginia Tech Senior Member IEEE, Facebook: N4HYBob, ARS: N4HY Faculty Advisor Virginia Tech Amateur Radio Assn. (K4KDJ)
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