Loopback on a WBX Board

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.

Steve McMahon

On Fri, Oct 8, 2010 at 4:17 PM, Steve M.
[email protected] 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

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