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From: | Marcus Müller |
Subject: | Re: [Discuss-gnuradio] Gain and Sample Rate Setting |
Date: | Mon, 31 Aug 2015 00:05:07 +0200 |
User-agent: | Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.1.0 |
Hi, what Jeon writes is correct so far, but two comments: > You can check XCVR2450's dsp rate XCVR2450 is your daughterboard, not your USRP. The mainboard has a master clock rate. 100M is a good example, because it's the MCR of the USRP N2x0. > But in case of LFTX, LFRX, it is 200k. As explained above, it's not a feature of the daughterboard, but of your USRP. My assumption would be the minimum rate for you is 100M/512 = 192.something kHz And as Jeon pointed out, you should see a warning on the console, saying which sampling rate was actually used. Now, I'm not quite sure what tools you're using that use the uhd_interface.uhd_transmitter and uhd_interface.uhd_receiver, but if it's one of the benchmark_* scripts, you will need to adjust symbol rate or samples_per_symbol, or likely both, to yield a valid sampling rate. Best regards, Marcus On 30.08.2015 23:42, Jeon wrote:
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