Daughterboard performance

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,

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

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

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