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Re: [Discuss-gnuradio] peak near center freq for noise signal, how to fi
From: |
vegihat vegihat |
Subject: |
Re: [Discuss-gnuradio] peak near center freq for noise signal, how to fix it |
Date: |
Mon, 29 Apr 2013 16:24:27 +0300 |
Well as you advice me, i set the --lo-offset=1M , for the following command
uhd_rx_cfile -a serial=4759a751 -N 100000 -f 2.53G --samp-rate=2M --lo-offset=1M noise.dat -v
However the peak is still there. I give below the output of uhd_rx_cfile.py.
As you can see the Rx DDC frequency is -2M (if I have understood correctly, it should be 1M,right? )
Any idea what is the wrong..
linux; GNU C++ version 4.4.5; Boost_104200; UHD_003.005.002-47-g4a860d74
-- Opening a USRP1 device...
-- Using FPGA clock rate of 64.000000MHz...
Using mid-point gain of 45.0 ( 0.0 - 90.0 )
Motherboard: USRP1 (4759a751)
Daughterboard: RFX2400 (no serial, RX2, A:0)
Rx gain: 45.0
Rx baseband frequency: 2.528G
Rx DDC frequency: -2M
Rx Sample Rate: 2M
Receving 100k samples
Writing 32-bit complex floats
Output filename: noise.dat