[Top][All Lists]

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

[Discuss-gnuradio] Testing Whether USRP Can Transmit

From: William Sherman
Subject: [Discuss-gnuradio] Testing Whether USRP Can Transmit
Date: Mon, 2 Mar 2009 02:59:40 +0100

I am working with a USRP1. I eventually will want to transmit and
receive data packets between USRP1s, but right now I am getting to grips
with the system.

I am currently trying out the benchmark_tx, benchmark_rx programs.

I call benchmark_rx on my USRP1's LFRX-LF daughterboard and leave it

sudo python benchmark_rx.py -f 10M -R A --rx-gain=70 -v -r 500k -d 128

bits per symbol = 1
M&M clock recovery omega = 2.000000
M&M clock recovery gain mu = 0.175000
M&M clock recovery mu = 0.500000
M&M clock recovery omega rel. limit = 0.005000
frequency error = 0.000000

Receive Path:
Using RX d'board A: Flex 2400 Rx MIMO B
Rx gain:         70
modulation:      gmsk_demod
bitrate:         250kb/s
samples/symbol:    2
decim:           128
Rx Frequency:    10M

I then call benchmark_tx on my USRP1's LFTX-LF daughterboard,

sudo python benchmark_tx.py -TA -f 10M -r 500k -v --tx-amplitude=20000

>>> gr_fir_fff: using SSE
bits per symbol = 1
Gaussian filter bt = 0.35
Using TX d'board A: Flex 2400 Tx MIMO B
Tx amplitude     20000.0
modulation:      gmsk_mod
bitrate:         500kb/s
samples/symbol:    2
interp:          128
Tx Frequency:    10M

This prints out ...... etc signifying packets are apparently being

However when I flip over to the benchmark_rx console no packet
notifications are being displayed.

Is the USRP transmitting data? Why is it not receiving this data if it
is transmitting?

Furthermore is there a test/example program just for testing whether the
USRP is transmitting through its antenna? For instance a program that
gets the USRP to produce an audible tone out of its antenna?
Posted via http://www.ruby-forum.com/.

reply via email to

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