Thanks for your answer Marcus. I am starting thinking that may be I am making
any mistake in my testing code, so I will post below the code I use in the **Rx
side** and don’t hesitate to tell me if you see anything suspicious :
`#define BURST_SIZE 2048 // Number of samples per Burst`
`s
Hi Marcus,
The value returned is 242
___
USRP-users mailing list -- usrp-users@lists.ettus.com
To unsubscribe send an email to usrp-users-le...@lists.ettus.com
Hi Marcus,
Thank you very much for your quick response.
I’m still having troubles to understand the results of my test : I call recv()
once, I sleep during 10 minutes, I call recv once again. When I merge the
samples received in both '“recv” calls, I see no discontinuity in the received
signal
this because
I performed some tests similar to those performed by Rob : I call recv(), I
sleep some time and call recv() again. I saw that even when I sleep several
minutes with a sample rate of 4Msps i still have no buffer overflow.
Thank you very much for your support.
David Fernandes
Hi Rob,
Thank you very much for your answer, it is really helpful. I’ve tried to create
several streamers as you suggested and it works. Thanks !
___
USRP-users mailing list -- usrp-users@lists.ettus.com
To unsubscribe send an email to usrp-users-le...@
Hi everyone,
I need to develop a system which streams independent samples at different
moments to the differents channels (channel 0 and channel 1) of an USRP X310.
To achieve that, I use the example codes available in the documentation which
look like the following :
// 1. Create the stream
Hi Marcus,
Thank you very much for your response, it is very usefull.
I am using 2 WBX-120 daughterboard cards.
As you told (and according to the logs “*Actual sample rate: 0.390625 MSps”*),
512 seems to be the max decimation factor instead of 1024. I think this could
be related to the version
Hi everyone,
I would like to transmit and receive with a sample rate of 280KHz but when I
try it, I get the following messages :
\[WARNING\] \[MULTI_USRP\] The hardware does not support the requested TX
sample rate:\
Target sample rate: 0.28 MSps\
Actual sample rate: 0.390625 MSps
\[WARNI
Hi Marcus,
Indeed, I tested so many things that I forgot to put the right frequencies. Now
it works smoothly. Thank you very much for your support.
___
USRP-users mailing list -- usrp-users@lists.ettus.com
To unsubscribe send an email to usrp-users-le..
The cables I use are SMA.
___
USRP-users mailing list -- usrp-users@lists.ettus.com
To unsubscribe send an email to usrp-users-le...@lists.ettus.com
Hi Marcus,
I performed some tests with a spectrum analyser and a signal generator as you
have suggested and the problem seems to be in the RX side. Here are the results
:
* If I do 1 way transmission \[RF0, TX/RX\] ==> \[RF1, RX2\] : OK, it works
everytime
* If I do 1 way transmission \[RF1,
Hi Marcus,
I have performed some tests physically looping TX/Rx to RX2 of the same
channel, and results are the same. I tried as well to turn off and turn on the
USRP between 2 consecutive tests, and It doesn’t seem to change anything.
___
USRP-users m
Yes, of course :
\[INFO\] \[UHD\] linux; GNU C++ version 11.3.0; Boost_107400;
UHD_4.1.0.6-0-g1a5b4fd2
\[INFO\] \[X300\] X300 initialization sequence...
\[INFO\] \[X300\] Maximum frame size: 1472 bytes.
\[INFO\] \[X300\] Radio 1x clock: 200 MHz
_
I tested with “No Sync” in both Sink and source and there is no difference. I
tested using the “Start Time” parameter in order to start first the Rx and then
some seconds later the Tx, but I have no luck..…
___
USRP-users mailing list -- usrp-users@list
Thanks for the information, I didn’t know it. Sadly, I performed tests with
1Msps and 0.5Msps and 20 db Gain in Rx and it doesn’t change.
I'm trying to figure out if there is any condition of when it works and when it
doesn't, but I can't, it seems quite random.
_
Hi Marcus,
I tried to wait 1 minute before starting a new test and it has no impact. Here
are the logs displayed by GNU Radio of 2 successive tests, the first was
successfull and the second launched 1 minute later failed.
1st TEST (successful) :
> Generating: '/home/davidfernandes/tests_gnurad
Hi Marcus,
* yes, I have two WBX cards in the X310. I have now added the value "A:0 B:0"
in the “Mb0: Subdev Spec” parameter on both source and sink.
* The Tx and Rx are connected directly with a cable with a 35dB attenuation.
* I have added a Gain value of 10dB in both Tx and Rx and I see nea
Hi Marcus,
Thank you for your quick response. I modified the flowgraph according to your
suggestions and now it seems to work sometimes. I don’t know why, but it can
work now if I run the test, but it probably won’t work in the following 10
tests… Do you have any idea of why it has this behavio
Hi Marcus,
Thank you for your quick response. I modified the flowgraph according to your
suggestions and now it seems to work sometimes. I don’t know why, but it can
work now if I run the test, but it probably won’t work in the following 10
tests … Do have any ide
options:
parameters:
aut
Hi everyone,
I am trying to perform full duplex communication with my X310 in the following
way using GNU Radio :\
\
\[RF0, TX/RX\] ==> \[RF1, RX2\]
\[RF1, TX/RX\] ==> \[RF0, RX2\]
But I see no signals in the reception sides. However, If I disable the
transmission in 1 channel, I can see the s
20 matches
Mail list logo
