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[Discuss-gnuradio] Questions about WBX daugtherboard
From: |
Damien Serant |
Subject: |
[Discuss-gnuradio] Questions about WBX daugtherboard |
Date: |
Wed, 17 Mar 2010 16:09:09 -0700 (PDT) |
Hi everybody,
I received few days ago my new URSP2 with the WBX daugtherboard and i have
some questions.
First there is two input: one labeled Tx/Rx and the other Rx2. Why is there
two Rx input and which one i have to use for reception ?
Second, for my first test i plotted the spectrum of received signal (without
any antenna) by using the usrp2_ftt.py example script. Looking at the
spectrum shape it appears there is a passband filter of about 8MHz bandwidth
somewhere in the reception chain. I believed, according to datasheet, that
the bandwidth was 30 MHz. An explanation ?
Third, the same spectrum shows lot of spurious harmonics relatively powerful
(compared to the noise floor). Is it normal ?
Thanks in advance for your answers.
Damien
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Damien Serant <=