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| From: | Matt Ettus |
| Subject: | Re: [Discuss-gnuradio] digitizing a digital data stream with USRP2 |
| Date: | Wed, 17 Feb 2010 11:02:17 -0800 |
| User-agent: | Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.7) Gecko/20100120 Fedora/3.0.1-1.fc12 Thunderbird/3.0.1 |
On 02/17/2010 09:38 AM, John Carlson wrote:
I have a USRP2 and I'm interested in doing an experiment where I'd like to simply use the USRP2 as an A/D and D/A device, essentially disabling the RF tuning portions. The signal I'm trying to digitize is a stream of digital TTL pulses. I assume that the best way to interface to this is through the DC-30MHz LFTX and LFRX daughtercards that would pass DC. Could anyone provide me with additional guidance on how to run this test? Thanks in advance.
Yes, the LFTX and LFRX are the best boards for what you are looking to do. You'd want to use usrp2_rx_cfile.py to record samples to disk. Depending on your data rate and how long you intend to record for you may need very fast disks. SSDs work well.
Matt
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