Re: [Discuss-gnuradio] Full duplex problem in usrp N200

[Josh Blum]

On 08/09/2011 09:52 PM, tahir siddiqui wrote:
> 
> Hello,
> 
> I am currently working on DSA in mesh network for this purpose I have been 
> using
> Gnuradio and USRP for practical implementation.
> 
> Previously I was using USRP1 with RFX2400 board for that the full duplex
> mode was working fine (.i.e. Transmit and receive simultaneously).
> 
> However last week we purchased new USRP N200 with SBX daughterbard for
> our project but I am unable to perform full duplex operation on it. I
> can either transmit or receive at a time. When I try to perform transmit
> and receive operation together (starting receive first then transmit
> later or vice versa) I get an error "that device not found at the
> specified address:192.168.10.2".
> 
> I have installed the latest firmware and image as well as the gnuradio+uhd 
> version.
> 
> can anyone help me to sort out this problem ?

I assume you are trying to open the same device in multiple processes?
In this case, it is working perfectly. The rule is 1 process per device.

-josh