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From: | Ben Hilburn |
Subject: | Re: [Discuss-gnuradio] Resolution of USRP N210 and N200 |
Date: | Tue, 5 Nov 2013 16:12:59 -0800 |
Ting -This question really isn't GNURadio related. If you resend it over the USRP-Users list, though, we will help explain things quickly!Cheers,BenOn Sat, Nov 2, 2013 at 12:22 AM, Ting Wu <address@hidden> wrote:
_______________________________________________Hi,
Both of USRP N210 and N200 have 14 bit ADC, which means a range of +/-2e13=+/-8129.
However, as I tested a N210 with LFRX, I got values from -32704 ~ 30073, close to +/-2e15=32768.
Last year, I also tested a N200 with LFRX, I got values from -16357 ~ 16241, close to +/-2e14=16384.
The sampling rate was set to 4 MHz.
So why does the ADC has a real resolution higher than 14 bit, and are N210 and N200 the same?
I’m really new to the world of ADC, so some basics would be very helpful.
Thanks!
Wu
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