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Re: [Discuss-gnuradio] Re: Full-duplex WBX

From: Evan Chen
Subject: Re: [Discuss-gnuradio] Re: Full-duplex WBX
Date: Tue, 11 May 2010 11:05:26 -0500

On Tue, May 11, 2010 at 10:19 AM, Matt Ettus <address@hidden> wrote:
On 05/11/2010 07:18 AM, Evan Chen wrote:
Or is there any document about full-duplex WBX?
I didn't find the answer on the web.

On Mon, May 10, 2010 at 7:19 PM, Evan Chen <address@hidden
<mailto:address@hidden>> wrote:

   Hi there,
   Does anybody know how to configure WBX to work in full-duplex mode?
   By running the "usrp2_fft.py", it turned out that both TX/RX port
   and RX2 port work for receiving.
   Since TX and RX share the same port, how do we know if the WBX work
   in half-duplex mode or in full-duplex mode?

It is just like the RFX-series.  Use the TX/RX port for transmit, and use the RX2 port for receive.

Thanks, Matt.
I'm doing such a test:
The RX2 port of WBX is connected to the ouput of an AWG, which generates a sine signal. And the TX/RX port is connected to a DPO, so that the transmitted signals can be captured on the screen. The output of the AWG is also connected to the DPO.
The USRP2 was simply powered on and no program was running.
On the DPO, the generated sine signal from AWG was observed, as expected. Moreover, it was also observed that the TX/RX port of WBX was also transmitting the same waveform (sine signal) that was received on the RX2 port. Is this normal?

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