Re: [Discuss-gnuradio] infinite receive and transmission

[alok ranjan]

Hello Tom,

Thank you for your reply to my queries .


After running the command for ' gnuradio-config-info' it is giving the output as 3.7.2.1 .

Infinite time means that it keep on transmitting for several hours (Checked upto 5 hours).


Thank you,

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From: address@hidden
Date: Thu, 18 Jun 2015 09:56:07 -0400
Subject: Re: [Discuss-gnuradio] infinite receive and transmission
To: address@hidden
CC: address@hidden

On Thu, Jun 18, 2015 at 9:14 AM, alok ranjan <address@hidden> wrote:

Hello list,


I am beginner for USRP networked series N210.

I have two N210 connected to my host i.e. laptop.  I am trying to check transmission and reception using two USRP .

When i am passing the command for transmission it is taking too much time (running sicne last 3 hours) . I am using benchmark_tx.py and benchmark_rx.py  by passing the below command for the transmission;

gnuradio/gr-digital/examples/narrowband$ sudo python benchmark_tx.py --args=addr=192.168.10.4 -f 800e6 -r 500e3 -A TX/RX -M 0.5 --tx-gain 10 --ampl 0.5

Why this almost infinite time. However, this issue was not with the USRP 1 series with the same commands.

what i am doing wrong while transmission?

Please guide me in this regards.


Thank you, regards

I'm not sure what you mean by it being "almost infinite time"? You mean it's taking too long to start transmitting?

Thing 1: don't run this command with sudo. There's no need for that. If you are having issues with permission talking to the hardware, fix those by installing the udev rules.

Thing 2: the benchmark_tx.py script only transmits a finite number of packets. Here you are setting it to 0.5 MB and your transmitting at 0.5 Mb/s, so you should be done in about 8 seconds.

Also, what version of GNU Radio are you running? The '--ampl' isn't a supported argument for this. It's '--tx-amplitude'. Run 'gnuradio-config-info -v' to find this out.

Tom