Hello
I find the data-types for python OOTs very confusing:
Apparently there are the following data-types:
float = float64
float32 used by most standard-blocks
float64
complex = complex128
complex64 used by most standard-blocks
complex128
This not really clear from the doc/tutorials.
In
o.k,
I find compiling gnuradio and uhd from source not that easy: I keep getting
compiler-error-messages
and messages about missing dependencies in the process.
I will try to upgrage my Ubuntu.
In the meantime I ran across and OOT-module named vave, which does what I want.
I tried to modify
I am making my first steps with gnuradio.
I am calculating the cross-spectrum of the two-channels of my
soundcard.
Now I want to reduce the noise in the spectrum by averaging. To this
end I need a moving average of vectors (=average on a per index basis).
Reading the doc of v3.7.13-4
Hi
I want to perform a frequency sweep with grc by sweeping the
center-frequency argument of the usrp-block and generate and display a
single complex-number for each value (this is for a vector-network
analyzer).
What I have come up with so far, is a block that processes a fixed
number of
Hi,
I am having problems with the gain-settings on the RX-channels of usrp1
My USRP1 is populated with 2 LFRX and 2 LFTX.
I want to use 2 DDC-channels each connect to one 2 ADC of LF-RX-Board A.
I have generated the following code with grc.
When apply a signal of roughly 11MHz I see the mixed
?
Wolfgang
Those are two DDC channels, derived from the same physical, analog, hardware
and ADC.
The LFRX itself has no gain-setting device, but the ADC does, so when you set
the gain on the ADC, you're setting the gain for both DDC-derived channels.
on May 29, 2013, Wolfgang Buesser
Hello,
I using a usrp1 populated with 2 LF-RX and 2 LF-TX.
I want to use 2 DDCs the I-inputs of which are connected to the 2 ADCs on LF_RX
A (Q-inputs to gnd).
In pre-uhd times I used to use set_mux, but now the API seems to have changed.
The following code produces the error message:
. This implies that the Q-inputs of the DDCs must be
connected to 0.
I guess the subdev spec would be:
A:A A:B ?
What would be the setting to use all 4 input?
Thanks
Wolfgang
On 05/26/2013 05:00 AM, Wolfgang Buesser wrote:
Hello,
I using a usrp1 populated with 2 LF-RX and 2 LF-TX.
I want to use 2
Hm,
with this
self.u_rx.set_subdev_spec(A:A A:B,0)
I get a segfault:
#!/usr/bin/python
Hello
I am using a usrp1 populated with 2 LFRX and 2 LFTX daughter boards.
I want to use the 2 ADC of LFRX-A to sample s different signals.
To do this I use set_subdev_spec(A:A B:A,0).
In order to avoid a segmentation fault I apparently have to create the rx with
num_channels=2.
But now I
Hi
I am having problems selecting the subdev with USRP1:
My USRP1 is populated with 2 LFRX and 2 LFTX.
I am trying the following code:
--
#!/usr/bin/python
On Sa, 2013-05-25 at 10:56 -0400, Marcus D. Leech wrote:
On 05/25/2013 10:45 AM, Wolfgang Buesser wrote:
On Sa, 2013-05-25 at 10:15 -0400, Marcus D. Leech wrote:
On 05/25/2013 03:28 AM, Wolfgang Buesser wrote:
Hi
I am having problems selecting the subdev with USRP1:
My USRP1
.
Any hints on what might be wrong or how I can check which lib is 32-Bit?
Thanks
Wolfgang
--
Wolfgang Buesser
Am Ziegelberg 1a
55595 Mandel
+49 174/585 2995
wolfgang.bues...@web.de
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Hi I am using a usrp1 populated with 2LF-RX and 2LF-TX daughterboards.
I am trying to learn how to use this hardware with the 'new'
uhd-interface.
I am trying tx_waveforms. Using --subdev A:A or B:A I can select the two
daughterbords. But how can I select a single output on either of the 2
this, rebuild GR-UHD against your current UHD.
cd (GNU Radio build directory)/gr-uhd
make clean
sudo make install
On Thu, May 2, 2013 at 1:01 PM, Wolfgang Buesser
wolfgang.bues...@web.de wrote:
Hi Erik,
thanks - I managed to install gnuradio that way. When
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Wolfgang Buesser
Am Ziegelberg 1a
55595 Mandel
+49 174/585 2995
wolfgang.bues...@web.de
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I am trying to install gnuradio on a new computer running suse 12.3 to
use it with my usrp.
upon cmake I keep getting the message:
Could Not find PythonLibs.
Any hint what rpm or sources I need to install on Suse 12.3 would be
great. Or maybe what libraries cmake is looking for.
python is
Hi,
Iam using
gr.sig_source_s (self.usb_freq (), gr.GR_CONST_WAVE, 0, 0, 0)
to generate a carrier and
usrp.source_c(nchan=2,decim_rate=self.interp) to resample it at the same
frequency.
I get what I expect: 2 complex numbers which are pretty constant. But with
every restart
of the
during system operation.
Cheers,
-Jonathan
On Sun, Jun 22, 2008 at 2:42 AM, wolfgang buesser
[EMAIL PROTECTED] wrote:
Hi,
Iam using
gr.sig_source_s (self.usb_freq (), gr.GR_CONST_WAVE, 0, 0, 0)
to generate a carrier and
usrp.source_c(nchan=2,decim_rate=self.interp) to resample
ultimate application?
Cheers,
-Jonathan
On Sun, Jun 22, 2008 at 3:58 AM, wolfgang buesser
[EMAIL PROTECTED] wrote:
Just to make sure:
I am using LF RX/TX-boards.
TX and RX are on the subdev (thus using the same AD9862)
Thanks
Wolfgang
Jonathan Friedman-2 wrote:
Unless I
Hi,
what is the simplest way to caluclate the average of a stream?
I generate a stream of fixed length using head(). I would like to
calculate the linear average (i.e.
sum_of_all_samples/number_of_samples).
Thanks
Wolfgang
___
Eric Blossom wrote:
On Thu, May 22, 2008 at 04:43:23PM +0200, Wolfgang Buesser wrote:
Hi,
what is the simplest way to caluclate the average of a stream?
I generate a stream of fixed length using head(). I would like to
calculate the linear average (i.e.
sum_of_all_samples
Hi,
I am still quite new to the USRP and GNU-radio, but I managed to write my
first piece of code for the USRP to behave like a network-analyzer. I have 2
questions:
1)I would like to just dump 2X-1000 complex samples into 2 files and then
quit (without keyboard or mouse interaction). But after
Hi,
I have just installed gnuradio 3.1.1 on a SuSE-linux 10.3
make performed without errors however make check reports:
==
ERROR: test_blks_import (__main__.test_head)
understand why, but for me it fixed the problem.
Regards
Wolfgang
wolfgang buesser wrote:
Hi,
I have just installed gnuradio 3.1.1 on a SuSE-linux 10.3
make performed without errors however make check reports:
==
ERROR
I am trying to build a network analyzer using usrp and LF RX/TX- so i need
one TX and two RX-channels. However I only get noise lcose to zero on the
secon channel:
Here is what I am doing in the RX_path (in brief). Maybe somebody can spot
the mistake:
self.rx =
Eric Blossom wrote:
self.rx_r_subdev = usrp.selected_subdev(self.rx, (0,0))
self.rx_r_subdev = usrp.selected_subdev(self.rx, (1,0))
Looks like a typo here ^ you're setting rx_r_subdev twice
Correct. This is not as in the code I tested.!
Also, how many
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