S and 10MHz clock to "external" in your flow-graph.
> The only time "GPSDO" is used is when you have a properly-installed
> internally-mounted, GPSDO unit.
>
>
>
>
>
>
> On 2016-05-03 12:02, khalid.el-darymli wrote:
>
> Thanks Marcus.
>
> OK, I
time transition at pps edge
(2) set time next pps (synchronously).
khalid
On Tue, May 3, 2016 at 12:20 PM, wrote:
> The PPS input is conditioned with a:
>
> http://www.ti.com/product/SN74AUP1T57/description
>
> Looks to me like it should work just fine.
>
>
>
>
>
Hi,
I'll appreciate any help on the following. According to the link below [1],
the PPS voltage for N200 should be in the range *[3.3, 5]* V p-p.
[1] http://files.ettus.com/manual/page_usrp2.html#usrp2_hw_leds
I am getting a PPS signal through fan-outs from an external Firefly-1A
GPSDO. I measure
Hi,
Can the time axis (y-axis) of the qt-gui waterfall sink be set as desired?
By default, it only shows a duration of 20 seconds. I would like this to be
adjusted, for example, to 1 minute or two minutes, etc.
I'm compiling the waterfall sink directly from C++ (I'm not using python or
GRC).
Th
Hi list,
FYI, I went through the documentation and I managed to get it to work :)
All what I need to do was to define a layout so that the waterfall widget
can be added to it.
Thanks,
khalid
-- Forwarded message --
From: khalid.el-darymli
Date: Thu, Jul 30, 2015 at 9:37 AM
Hi,
I have a simple flowgraph comprised of two channels (UHD: USRP Source)
connected to two separate Qt GUI Waterfall sinks.
This works perfectly in Python/GRC. However, I would like to convert this
into C++.
Previously, I did conversions successfully for various other flow-graphs
without GUIs.
ins (see also
>
> http://gnuradio.org/doc/doxygen/classgr_1_1block.html#acad5d6e62ea885cb77d19f72451581c2
> ).
>
> Also, 0 is the default.
>
> M
>
> On 22.05.2015 11:26, khalid.el-darymli wrote:
> > Hi list,
> >
> > I am doing some (polyphase) decimation with GNURadio in C++. I
Hi list,
I am doing some (polyphase) decimation with GNURadio in C++. I constructed
my filters, I wrote some wrapper, and my script compiles perfectly.
However, I am a bit unclear about "declare_sample_delay".
Assume that I have the block: pfb_decimator_ccf_0_5. To set the sample
delay for this b
Hi,
What is the proper way to set-up the multiplicative constant vector for
multiply_const_vcc?
I tried the code below and although it compiles, upon running the program I
get the following error:
*Segmentation fault (core dumped).*
The code:
std::vector k;
k[0]=0.1;
blocks::multiply_const_
I see. Is there someone we can contact at Ettus for this?
Khalid
On Fri, Jan 16, 2015 at 4:29 PM, Marcus D. Leech wrote:
> On 01/16/2015 02:54 PM, khalid.el-darymli wrote:
>
> I see. If you would like to diagnose the problem, we can ship you the
> malfunctioned daughterboard?
I see. If you would like to diagnose the problem, we can ship you the
malfunctioned daughterboard?
Thanks,
Khalid
On Fri, Jan 16, 2015 at 4:17 PM, Marcus D. Leech wrote:
> On 01/16/2015 02:42 PM, khalid.el-darymli wrote:
>
> We were using only one Tx channel with the Subdev Spec in
PM, khalid.el-darymli wrote:
>
> Hi All,
>
> Just to update you in case somebody else comes across this problem.
> Following Mike's advice, we replaced the LFTX daughterboard with a new one.
> We're getting now 1 V p-p. This is around 4 dBm.
>
> Thanks very
;re seeing might be a hardware issue rather than
> something you can resolve with settings.
>
> -Mike
>
> On Tue, Jan 6, 2015 at 12:59 PM, khalid.el-darymli <
> khalid.el-dary...@mun.ca> wrote:
>
>>
>> >> Output power is determined largely by baseband si
Hi,
Is it possible to use two separate Tx channels (A:A A:B with two different
center frequencies) for the N200 with the LFTX daughterboard?
I tried to do this on the Rx side and it seems to work just fine. However,
on the Tx side, I am getting the following error message:
line 97, in __init__
Thanks Johnathan for the update.
BTW, with the recent installation, I am also getting the following warning
when running my GRC or the GRC-generated python script,
fft_impl_fftw: /home/ov/.gr_fftw_wisdom: Permission denied
fft_impl_fftw: /home/ov/.gr_fftw_wisdom: Permission denied
fft_impl_fftw: /
Hi Marcus, Hi Sylvain,
Thank you for your response. I continue to get these U
even on a PC with really high specs.
Please find below my answers to your questions.
>> Do you use timed_commands?
Yes, I do. In the python script, I simply use get_time_now() to query
the times of b
Yes, it is 1 Mohm, and my probe is set to 1X.
Khalid
On Tue, Jan 6, 2015 at 3:33 PM, Nick Foster wrote:
> Is the input impedance of your scope 1Mohm or 50 ohms? You sure you have
> the voltage multiplier (1x/10x) set correctly?
>
> On Tue, Jan 6, 2015 at 11:01 AM, khali
gt;> at buffered ADC ouput.
>>
>> So, ~ *+7dBm* is the max output power I supposed to get from the LFTX
>> daughterboard? How do I get that?
>>
>> Since I am only getting -28.13 dBm, does that mean I have some issue
>> with my LFTX daughterboard?
>>
didn't take the time to look for the problem, but I figured I'd share
> this info since what you're seeing might be a hardware issue rather than
> something you can resolve with settings.
>
> -Mike
>
> On Tue, Jan 6, 2015 at 12:59 PM, khalid.el-darymli <
&g
X daughterboard?
>
>
> Khalid
>
>
> Output power is determined largely by baseband signal magnitude in that
> case.
>
>
>
>
>
>
>
>
>
> Message: 2
> Date: Tue, 6 Jan 2015 10:13:45 -0330
> From: "khalid.el-darymli"
erboard? How do I get that?
Since I am only getting -28.13 dBm, does that mean I have some issue with
my LFTX daughterboard?
Khalid
Message: 2
Date: Tue, 6 Jan 2015 10:13:45 -0330
From: "khalid.el-darymli"
To: "Discuss-gnuradio@gnu.org"
Subject: [Discuss-gnu
Hi,
What is the maximum output power from the LFTX daughterboard when used with
the USRP N200?
According to this datasheet [1], the N200 with the WBX daughterbaord
provide an output power of 15 dBm. However, when using the LFTX
daughterboard, I am getting a much less output power.
[1] http://www.
Hi,
We recently bought a new PC with some powerful specs. GNU Radio was built
from the source and it seems to be installed fine. However, when I try to
use the virtual sink and source blocks in my flow graph, I am getting the
following error:
Traceback (most recent call last):
File "./test_skh.
Hi,
In the terminal and while using a powerful PC (please see the attachment),
I am occasionally getting capital U's and L's when running GNU Radio with
one Tx and 4 Rx channels (Here is a sample of what I am getting:
ULLLUULLLULLLU).
Please
'virtual_source_0'*
Things work fine if I replace the virtual blocks with direct connections. I
am not sure why?
Thanks in advance for your help.
Best regards,
Khalid
On Mon, Jan 5, 2015 at 12:11 PM, Tom Rondeau wrote:
> On Wed, Dec 31, 2014 at 11:17 AM, khalid.el-darymli <
&g
Hi,
We recently bought a new machine with like 4 GHz processor, 16 GB of RAM.
For the graphic card, we use the Radeon R7 250 1000 MHz GDDR5.
Latest version of Ubuntu (14.04 LTS) was installed along with GNU Radio
built from the source. Everything seems to be installed just fine. However,
when try
gt; *Sent:* Tuesday, December 2, 2014 4:11 PM
> *To:* khalid.el-darymli
> *Cc:* usrp-us...@lists.ettus.com; Discuss-gnuradio@gnu.org
> *Subject:* Re: [USRP-users] How to correct for the drift in an (FMCW) Rx
> signal?
>
>
>
> On 12/02/2014 10:06 AM, khalid.el-darymli wrote:
&g
Hi Marcus,
Is there a temperature sensor on-board the N200 unit? If not, does it
support installing any such sensor?
Thanks.
Best regards,
Khalid
On Fri, Nov 28, 2014 at 5:44 PM, Marcus D. Leech wrote:
> On 11/28/2014 03:41 PM, khalid.el-darymli wrote:
>
>
>
> Back to my or
Hi,
Given a set of synced *(i.e., using external GPS REF/PPS)*, time-commanded
and calibrated *(i.e., through compensating for the phase/mag offset
between digital Tx chirp prior to transmission and ADC'ed Rx signals) *N200
devices with LFTX/LFRX daughterboards, that work with coherent LFMCW
chirp
Hi,
In GRC, I need to switch back and forth (in real time) between two
subroutines based on some conditional 'IF' statement. For example, 'after'
some preset lapse of time. Is it possible to do that?
Please note that I need the conditional switching to take place in
real-time while the USRP is ru
Hi,
I would like to downsample a signal from *390,625* Hz to *125 *Hz. *What is
the best way to do this in GNURadio? *
Please find below some issues I am having with this.
First, I used the Low Pass Filter block, in GNURadio, I set my Decimation
to 3125, my Cutoff Freq to 125/2. But I am not su
930252111 (930.2 MB)
>>Interrupt:19
>>
>> GA-MA785GMT-UD2H:/etc/network$ ifconfig -a eth3
>> eth3 Link encap:Ethernet HWaddr REMOVED
>>inet addr:192.168.20.1 Bcast:192.168.20.255
>> Mask:255.255.255.0
>> inet6 addr
scuss-gnuradio@gnu.org
> Subject: Re: [Discuss-gnuradio] Issues with syncing two USRPs!
> Message-ID: <539857a0.8020...@ettus.com>
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>
> On 10.06.2014 22:09, khalid.el-darymli wrote:
> > I am a new user of USRP/GNU Radio. I
Hi,
I am a new user of USRP/GNU Radio. I am experimenting with a system
comprised of one transmitter and multiple receivers. For now, I have two
USRP N200. On the first USRP, I got one LFTX and one LFRX daughter boards.
On the other, I got one LFRX daughter board.
In my application, it is import
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