Re: [Discuss-gnuradio] Tuning problem - usrp_fft.py

[José Carlos Reyes]

Hi,

I do not know if my problem is like your.But after installing Gnu Radio (3.1.3 tarball) I tested my USRP and Dbsrx daughterboard when usrp_fft.py and I could see gsm spectrum without problems. After that, I installed Tvoid to decode gsm channels and it worked. Now, I do not know what happend. When I type:

 ./usrp_fft.py -R A -d 64 -g 20

show me the sprectrum like noise ( I have seen the whole band - 800- 2400Mhz like noise at the same level).
Besides, Tvoid does not work right now. My USRP does not receive from the RF.

What could be happening?

Thanks in advance.
Sincerely,

Jose

2009/2/3 Fabian Uehlin <address@hidden>

Hello!

I have a Gentoo Linux system with KDE and the current svn version of GNURadio and OpenBTS (revision 10370).
Because tuning of my two daugtherboards (RFX-1800, USRP1) failed with OpenBTS, an user give me the hint to run usrp_fft.py.

So I run
usrp_fft.py -R A -f 1724.4e6 or
usrp_fft.py -R B -f 1724.4e6

It returns
"Segmentation fault"
nothing more.

Running
usrp_siggen.py -T A -f 1819.4e6 or
usrp_siggen.py -T B -f 1819.4e6
returns
"Using TX d'board A: Flex 1800 Tx MIMO B" or
"Using TX d'board B: Flex 1800 Tx MIMO B"
nothing more.

The main problem is, that OpenBTS occurs an error, that the daughterboard could not tune to the
desired frequency. So I tried to fix it, but without success.
But now it seems, there is a general problem with tuning my USRP/daughterboards?!

What could be the problem? Does anyone have an idea?

Thanks & Regards
       -Fabian-

OpenBTS warnings:
openbts apps # ./OpenBTS1800 > /home/openbts/current/fail.txt
1232538978.074960 3082876624: TRXManager.cpp:352: WARNING -- RXTUNE failed with status 1
1232538978.115613 3082876624: TRXManager.cpp:396: WARNING -- POWERON failed with status 1

openbts Transceiver # ./transceiver
1232538960.602767 3083904720: creating USRP device...
1232538960.602831 3083904720: making USRP device..
1232538978.074243 3083762576: Transceiver.cpp:501: RX failed to tune


Here are the last lines of my configure log:

*********************************************************************
The following components were skipped either because you asked not
to build them or they didn't pass configuration checks:

usrp2-firmware

These components will not be built.


*********************************************************************
The following GNU Radio components have been successfully configured:

config
gruel
omnithread
gnuradio-core
pmt
mblock
usrp
usrp2
gr-usrp
gr-usrp2
gr-msdd6000
gr-audio-alsa
gr-audio-jack
gr-audio-oss
gr-audio-portaudio
gr-atsc
gr-cvsd-vocoder
gr-gpio
gr-gsm-fr-vocoder
gr-pager
gr-radar-mono
gr-radio-astronomy
gr-trellis
gr-video-sdl
gr-wxgui
gr-qtgui
gr-sounder
gr-utils
gnuradio-examples
grc

You my now run the make command to build these components.

*********************************************************************
The following components were skipped either because you asked not
to build them or they didn't pass configuration checks:

gcell
gr-gcell
gr-audio-osx
gr-audio-windows
gr-comedi

These components will not be built.


_______________________________________________
Discuss-gnuradio mailing list
address@hidden
http://lists.gnu.org/mailman/listinfo/discuss-gnuradio