Re: [Discuss-gnuradio] Loopback on a WBX Board

[Jason Abele]

On Fri, Oct 8, 2010 at 4:17 PM, Steve Mcmahon <address@hidden> wrote:
> I have a Rev 4 USRP2 board with a WBX daughterboard. I want to write a simple
> loopback test from the "TX/RX" port to the "RX2" port, just to transmit a 
> simple
> 1 MHz + 3 MHz multi-tone signal, modulated up to 2.2 GHz, and then receive it
> and write it to disk. Can I directly connect the two ports together, or do I
> need to insert an attenuator in between the ports?? Is there anything I should
> be aware of before running this basic loopback test?? I really appreciate any
> advice. Thanks a lot.
>

Please do use fixed attenuation, we recommend at least 30dB.  The
transmit is capable of 15-20dBm output and the receive can be damaged
by input above -10dBm

Otherwise, such a setup should be possible

Jason