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Re: [Discuss-gnuradio] A Clarification
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From: |
Marcus D. Leech |
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Subject: |
Re: [Discuss-gnuradio] A Clarification |
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Date: |
Tue, 28 May 2013 18:50:45 -0400 |
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User-agent: |
Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.24) Gecko/20111108 Fedora/3.1.16-1.fc14 Thunderbird/3.1.16 |
Hope i am not asking a silly question..
Where can i find the "Dual -DDC"feature.Is it confined to a particular
version.Since i don't find it .
Thanks!
For USRP1 and N2XX, you get it by default, and UHD figures out what to
do (for the most part) based on your configuration.
For B100, you need the _2rx FPGA image.
See the attached dual_channel_wbx.grc example attached.
Note that the subdev spec shows the same subdev for both channels: A:0
A:0 in this case
And you have to use some of the magic in uhd.tune_request() to enable
manual setting of the RF frequency, which we simply calculate as the
midpoint between the two desired frequencies, and then we let the
DDCs sort things out from there.
--
Marcus Leech
Principal Investigator
Shirleys Bay Radio Astronomy Consortium
http://www.sbrac.org
dual_channel_wbx.grc
Description: application/gnuradio-grc