[Top][All Lists]

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

[Discuss-gnuradio] Confusion with uhd_fft.py with usrp2

From: sumitstop
Subject: [Discuss-gnuradio] Confusion with uhd_fft.py with usrp2
Date: Sat, 10 Sep 2011 11:01:15 -0700 (PDT)

Today I ran uhd_fft.py in two usrp and two usrp2.They were in the same room
and placed at a distance of 2-3 meters from each other(approx) but there was
much difference in the fft.

Actually there was a peak at 2.432G . Both usrp detected well but there was
some confusing display from usrp2 under uhd_fft.py. usrp2s also detected the
peak but there was a significant rise on the left side in both the usrp2.I
checked with RFX2400 and XCVR2450 both.

                                           Here is the fft for both usrp2
under uhd_fft.py


                                                Also in the figure below 
its detecting two peaks.


                                                     Also sometimes it went
like this 


At the same time the display from usrp under usrp_fft.py was perfect.
I am using RFX2400 as well as XCVR2450. Although there is some problem with
the second usrp.Despite of elevating the gain and changing the positions the
peak is not getting sharp and high. :) 



What may be the reason.... Placement of the usrp's or some hardware fault ?

Sumit Kr.
Research Assistant
Communication Research center
IIIT Hyderabad
View this message in context: 
Sent from the GnuRadio mailing list archive at Nabble.com.

reply via email to

[Prev in Thread] Current Thread [Next in Thread]