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Re: [Discuss-gnuradio] How to retune a daughterboard/bring up the sample
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From: |
Josh Blum |
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Subject: |
Re: [Discuss-gnuradio] How to retune a daughterboard/bring up the sample rate on USRP? |
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Date: |
Tue, 28 Jun 2011 17:27:08 -0700 |
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User-agent: |
Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.17) Gecko/20110516 Lightning/1.0b2 Thunderbird/3.1.10 |
> Also, getting re-tuning to happen in under 1ms is going to be a
> challenge. It's unlikely that you'll get the PLL synthesizer on the
> RFX2400 to
> re-lock in under 1ms.
>
>
You should be able to re-adjust the digital frequency shift very
quickly, which can go +/- 32MHz. On USRP1, this is implemented in the
DAC (not the FPGA DSP). You can do this w/ tune_request_t in uhd, no
idea about libgnuradio-usrp
-Josh