HI Josh,
Thanks for your response. The firmware I used is
txrx_xcvr_raw_eth_20100608.bin. I think it is the latest version for
xcvr2450.
I guess there is a problem be shown in the waveform after using the
usrp2_fft.py (see the attachment, the red cycle part in the screenshot).
In
my test, the red cycle part shows “”. But other person’s test result
shows
“XCVR2450” at the same position. I also attach this person’s result in
the
attach (the only difference is this person uses USRP1 + XCVR2450). Is
there
any different between using USRP2+xcvr2450 with using USRP1+XCVR2450?? I
have two USRP2+XCVR2450 and none of them can get the signal. I really
want
to know what is happen.