Hi,
Replace all xxx.run with xxx.start() and put xxx.wait() followed by
xxx.stop() to stop the flowgraph
Best Regards,
Firas
- Original Message
> From: Andy_Long
> To: Discuss-gnuradio@gnu.org
> Sent: Thu, April 15, 2010 10:50:39 AM
> Subject: Re: re[Discuss-gnuradio] configu
In GRC, i want to use the band pass filter, but i just donnot know there is
some ralationship with Decimation and how can i determine how much the
decimation is ,and in the USRP sink,how the interpolation ?
thanks in advance!___
Discuss-gnu
We are looking for a summer intern to work on GNU Radio and the USRP.
Specifically, we need someone with embedded software and Xilinx FPGA
experience.
If you are interested, please email me off-list with your resume and a
brief description of your experience with GNU Radio, USRPs, and FPGAs
Very exciting! Thanks Josh!
I'm off to build and test. Couple quick questions:
* Are you still basing the fpga build around Xilinx 10.1? If so - any
plans to move to/test with later versions?
We have no immediate plans because 10.1 is stable and working. Perhaps
the next ISE service pack wi
Hi Matt
>Yes, -9 dBm is safe.
Glad to know it was all safe re input levels.
>I have not seen the problem locking without trying a lower frequency.
>What if you try 5 GHz twice in a row?
The problem with the not locking to 5G is very intermittent. A few times
when it did occur, I tried your sug
>
> On Thu, Apr 15, 2010 at 16:52, Marcus D. Leech wrote:
>
>
> If you are willing to give up an LSB, you can turn on GPIO streaming
> with enable_gpio_streaming(). Then io_rx[15] will show up in the lsb
> of I, and io_rx[14] will show up in the lsb of Q. You need to use the
> usrp2.source_16
On Thu, Apr 15, 2010 at 16:52, Marcus D. Leech wrote:
> Can I use the GPIO stuff to give me better confidence of adequate
> synchronization between the
> actual data, and the state of the input?
If you are willing to give up an LSB, you can turn on GPIO streaming
with enable_gpio_streaming().
I'm buliding a system that switches the RF input, several times per
second, between the actual
signal, and a stable reference source.
On a USRP2, what kind of latency is there between the antenna input, and
data arriving at the
head of the signal processing chain?
Small errors at the 'edge' o
On Thu, Apr 15, 2010 at 5:11 PM, Josh Blum wrote:
> Hello List,
>
> I said that we would release some uhd code on the 15th of April (2010). So
> here it is...
> git clone git://ettus.sourcerepo.com/ettus/uhd.git
> The UHD source tree comes with firmware, fpga, and host code.
Very exciting! Thanks
Hello List,
I said that we would release some uhd code on the 15th of April (2010).
So here it is...
git clone git://ettus.sourcerepo.com/ettus/uhd.git
The UHD source tree comes with firmware, fpga, and host code.
For those of you who are not familiar. The UHD is the universal hardware
driver
Hello,
I've ubuntu 9.10 karmic koala 64bit and the latest gnu radio installed on a
hp dv7-1020us and I get the same error that Fabrizio was getting.
When I try to run the usrp_benchmark_usb.py I get the "can't open usrp"
error.
f...@frsn-nb:/usr/local/share/gnuradio/examples/usrp$
./usrp_benchmar
On 04/14/2010 03:38 AM, Per Zetterberg wrote:
Another question on xcvr2450:
In the firmware I can see that the maximum linearity is not switched on.
Can I do it ? Does it make sense ?
You can experiment with all of those settings, and I would encourage you
to do so in order to get the best p
On 04/14/2010 05:30 PM, Berndt Josef Wulf wrote:
G'day,
The FX2 chip has issues and this time I suspect a faulty crystal. I would like
to replace it before going any further.
The current crystal is a ECSD240E, but I can't find any information on it.
Does anyone know the part number for a replac
On 04/11/2010 11:09 PM, Ian Holland wrote:
Hi Matt
Can you please confirm by input level you are referring to the input to
the transceiver daughterboard? I am using the XCVR2450, for over-the-air
reception. The input level (to the XCVR2450 at the receiver) would have
been roughly:
Tx Power (max
If I have two signals entering a receiver, both with a power of 0 dBm,
what would be the total input power seen by the receiver? Is it 3 dBm
or 6 dBm?
Anywhere between 6dBm and -174 + 10*log() dBm,
assuming a 50-Ohm system at room temperature.
JD 'correlation' B.
--
LART. 250 MIPS under one
On Thu, Apr 15, 2010 at 4:34 AM, Umair Naeem wrote:
> How can I use/import 'ra_stripchartsink' and 'ra_fftsink' in GRC ? They are
> not available in available sinks in GRC.
If you have a working gnuradio module that you would like to add to
GRC you can create an XML file that tells GRC how to us
Hello,Johnathan
Did I have some misunderstanding about it? I still think the problem is from
USRP2 rather than flow graph.
For example, I made some tests to change the while loop such as:
def main():
t = my_top_block()
t.run()
print t.c2mag.unmuted(): #show exceed threshold o
It is for UMTS based standard LTE (20MHz bandwidth) which has 30.72Msps and
this is beyond USRP2's instantaneous bandwidth (25MHz). I am simulating LTE
(10MHz bandwidth) where I can halve the sampling rate of 15.36Msps. Reading the
earlier mail threads and responses from Matt I understand that
I took your advice, and I designed my convolutional interleaver using
existing gnuradio blocks. It was pretty easy. I just need to add an
"addtail" c++ block. It will do the exact opposite of gr.skiphead.
Do you think I should post this work?
Thanks for your help.
Axel
On Wed, April 14, 2010 4:3
How can I use/import 'ra_stripchartsink' and 'ra_fftsink' in GRC ? They are not
available in available sinks in GRC.
Regards,
Umair Naeem
MSc Communication Engineering
Chalmers University ot Technology, Sweden.
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