Thanks Karthik!
I will take a look at the attachment. That is great, I want to
eventually sample 4 real channels, and want to avoid the
overrun/underrun problems.
Thanks for your help!!
-Dan
— On Wed, 3/10/10, Karthik [email protected] wrote:
From: Karthik [email protected]
Subject: Re: [Discuss-gnuradio] Multiple Channel USRP Confusion
To: “dan s” [email protected]
Cc: [email protected]
Date: Wednesday, March 10, 2010, 12:52 PM
Dan,
I have a solution that I have been using for a while. I have attached
the relevant files and a working example. You will need to put all the
files except the .grc file into your .grc_gnuradio directory and restart
grc. Not sure if this is a good way to do it, but it works for me.
the helper blocks are the core, the dual_a, dual_b are heir blocks that
add on top of this one. I also included a quad source block for real
inputs using 2 LFRX in case you are interested. I have changed the fusb
parameters such that I can records data at high sampling rates (4MSps)
without getting overruns.
Hope that helps.
Regards,
Karthik
On Tue, Mar 9, 2010 at 10:33 PM, dan s [email protected] wrote:
Hi all,
I am looking to simultaneously record two real signals (not with IQ)
using a single LFRX daughtercard.
How can I do this with GNURadio companion? I have spent a while looking
at the USRP Source and Dual USRP Source blocks and could not figure out.
I am looking to record from Side A with RXA and RXB. I tried setting
the RX Antenna setting to RXAB and used the complex to real block to
extract channel RXA, and complex to imaginary block to extract RXB. I
don’t think this worked properly.
I also tried using two separate USRP source blocks, each on side A but
one for RXA and the other for RXB. When I did this I got an error
related to already having one USRP side A block running.
Any help would be greatly appreciated
Thanks,
Dan
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