Re: [Discuss-gnuradio] daughterboard performance

[Guanbo Zheng]

It is USRP2, my system setup is Ubuntu 9.04+Gnuradio3.2.2.

My test codes includes the benchmark OFDM, BBN code, which i tested smoothly 
before both cabling and over the air.

TX uses XCVR2450, the RX uses RFX2400 or DBSRX-LF.

Best,
Guanbo

On Feb 17, 2011, at 10:42 PM, "Marcus D. Leech" <address@hidden> wrote:

>> Hi
>> 
>> I used XCVR2450 daughterboard for TX and RX on USRP2 and everything is
>> fine.
>> Recently I began to use RFX2400 and DBSRX-LF, which I found out the
>> performance are much worse than XCVR2450.
>> Observed from FFT plot, I found out there are some weird spectrum
>> response using RFX2400 and DBSRX-LF respectively.
>> Furthermore, I am not able to decode some OFDM example anymore! (I
>> compensated the correct carrier frequency already)
>> 
>> I am wondering if I need to update something like firmware, in order
>> to use those two new daughterboards.
>> Thanks,
> You haven't given us much to go on.
> 
> What does your test setup look like?  Are you using USRP1?  USRP2?
> USRP-N210?  Using UHD?
> 
> Are you tests over-the-air or with cables?  Are you using attenuators in
> the cabling?
> 
> 
> 
> 
> -- 
> Principal Investigator
> Shirleys Bay Radio Astronomy Consortium
> http://www.sbrac.org
> 
> 
> 
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