You probably need to load the SD card with the txrx_wbx.bin firmware:
http://gnuradio.org/releases/usrp2-bin/trunk/
-Josh
On 05/06/2010 04:12 PM, Evan Chen wrote:
Hello everyone,
I just got the USRP2+WBX recently. And I used the famous "usrp2_fft.py" as a
starting point.
The problem I met is that the curve plotted by the usrp2_fft.py seemed to be
abnormal. Sometimes, the amplitude of the curve was around -150 dB, and
sometimes it went below -400 dB.
An antenna was attached to the "TX/RX" port of the WBX.
I tried "usrp2_probe" and got the following information.
USRP2 Probe
MAC Addr:
00:50:c2:85
Name (ID):
1
Converter Rate:
100000000 Hz
Gain Range (min, max, step size):
0.0
0.0
0.0
Freq Range (min, max):
-90000000000.0 Hz
90000000000.0 Hz
It looks like to me the RF daughterboard was not properly configured.
Did anyone meet such a problem?
Also, I have another two questions:
For full-duplex communications, does it mean both "TX/RX" and "RX2" need to
be attached to antennae? How to configure the WBX?
On "usrp2_fft.py", if the center frequency was set beyond 206 MHz, it would
prompt "Failed". Why this happened? There was no such prompt using the FFT
Sink on GRC.
Thanks.
-Evan
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