Forum: GNU Radio USRP2 TX fail

I try SBX and WBX but the result is the same. TX fails and RX succeed.
The following is the summary usrp2, operated in gnuradio 3.2.2 with 
corresponding firmware download from ettus web can TX and RXusrp2, 
operated in gnuradio 3.6.2 with corresponding firmware download from 
ettus web can RX but fail to succeed.
The test program used are uhd/usrp2_siggen, benchmark_tx and 
benchmark_rx and bbn80211_tx and bbn80211_rx.
I think the problem may be related with firmware in 3.2.2 version, but 
if it is the problem it is hard to explain why it can RXThank you.

 =================================
Xiangwei Zheng
Research Assistant
ECE Department, Virginia Tech
Office: Durham Hall 365
Tel: 540-553-6235




Date: Thu, 6 Dec 2012 16:17:53 -0500
Subject: Re: [Discuss-gnuradio] (no subject)
From: mnislam@winlab.rutgers.edu
To: zxwmit@hotmail.com
CC: discuss-gnuradio@gnu.org

Which port is your antenna connected to? In SBX/WBX daughterboards, you 
can only transmit through Tx/Rx. However, you can receive through both 
Tx/Rx and Rx2.

This might not be related to your problem. But just checking.


Thanks,

Nazmul

On Thu, Dec 6, 2012 at 2:14 PM, zhengxiangwei <zxwmit@hotmail.com> 
wrote:




Dear Guys,        I encounter one strange problem, I can use usrp to 
receive signal but cannot transmit signal. My usrp is USRP2 and gnuradio 
version 3.2.2.       When running ursp2_siggen.py, it do not return any 
error but when I use a spectrum analysis, it shows no signal is 
transmitted.
       When running benchmark_tx.py and bbn80211_tx.py, it also reports 
no error, but there is no signal sent out.       Do you guys have any 
advice?
       Thank you.

 =================================
Xiangwei Zheng
Research Assistant
ECE Department, Virginia Tech
Office: Durham Hall 365

Tel: 540-553-6235




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--
Muhammad Nazmul Islam

Graduate Student
Electrical & Computer Engineering
Wireless Information & Networking Laboratory
Rutgers, USA.