On 10/22/2014 03:38 PM, Frederik Wing wrote:
> And now the problem is finally solved.
>
> The cause for it was a defective WBX board. I replaced it with a new one
> and now everything works!
>
> Again, thank you all for your productive hints and explanations!
Phew, I was just about to set up the
Hello,
I am trying to implement a burst transmitter using GNU Radio Companion
and an USRP N210 with WBX board. My problem is when inserting zeros as
"gap" between the bursts the USRP is transmitting a non-neglectable
carrier signal (due to DC offset I guess?). So I want to try inserting
tx_sob an
Hello,
I am trying to implement a burst transmitter using GNU Radio Companion
and an USRP N210 with WBX board. My problem is when inserting zeros as
"gap" between the bursts the USRP is transmitting a non-neglectable
carrier signal (due to DC offset I guess?). So I want to try inserting
tx_sob an
Thank you all for your postings! I really appreciate your help in
solving my problem.
Sean,
interesting point.
Frederik,
How does your carrier look when you send bursts of >500 samples?
Greetings,
Marcus
On 21.10.2014 19:29, Nowlan, Sean wrote:
I'm concerned that the problem Frederik is o
carrier. Is this what you want, or are you just experimenting
with the burst interface?
3) Is there a reason your burst pulses need to contain so few samples?
Could you provide some information about what you're trying to do in your end
application?
Sean
From: discuss-gnuradio-bounces+sean.nowlan=g
gt; To: Nowlan, Sean; discuss-gnuradio@gnu.org; Martin Braun
> Subject: Re: [Discuss-gnuradio] Transmitting bursts with GRC by
inserting SOB and EOB
>
> Hi Sean,
>
> aaah good catch! Yes, that's right; sob is safe.
>
> Cheers,
> Marcus
>
>
>
> On 21.10.2014 19:19, N
ssage-
From: Marcus Müller [mailto:mar...@hostalia.de]
Sent: Tuesday, October 21, 2014 1:24 PM
To: Nowlan, Sean; discuss-gnuradio@gnu.org; Martin Braun
Subject: Re: [Discuss-gnuradio] Transmitting bursts with GRC by inserting SOB
and EOB
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1
Hi Sean,
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1
Hi Sean,
aaah good catch! Yes, that's right; sob is safe.
Cheers,
Marcus
On 21.10.2014 19:19, Nowlan, Sean wrote:
> From Marcus:
>> ... and that (wut) might be a bug, because it implies that, if
>> the stream has both a time tag and a sob tag, the
>From Marcus:
> ... and that (wut) might be a bug, because it implies that, if the stream has
> both a time tag and a sob tag, the
> question whether the tx metadata has a time tag depends on in which order
> these tags are sorted on the the
> tag storage multimap. Which might be random, because
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Hash: SHA1
Gd question.
The corresponding lines look something like [1] (while iterating over
the tags in the current set of items):
BOOST_FOREACH(const tag_t &my_tag, _tags) {
...
else if(pmt::is_null(_length_tag_key)
&& pmt::equal(key, SO
On 10/21/2014 03:53 PM, Frederik Wing wrote:
> Hi Marcus,
I cannot believe that there is no solution to it since the "tags_demo"
application shows that it is indeed possible. :-/
>> that makes the two of us! I didn't get that when using tags_demo, you're
>> not seeing the carrier that you
Hi Marcus,
>> > I cannot believe that there is no solution to it since the "tags_demo"
>> > application shows that it is indeed possible. :-/
> that makes the two of us! I didn't get that when using tags_demo, you're
> not seeing the carrier that you use tags_demo; as far as I understood,
> your ap
Hi Frederik,
On 21.10.2014 14:56, Frederik Wing wrote:
>
> I cannot believe that there is no solution to it since the "tags_demo"
> application shows that it is indeed possible. :-/
that makes the two of us! I didn't get that when using tags_demo, you're
not seeing the carrier that you use tags_dem
- You're using an ancient UHD version. Is there a reason you can't
use a
newer one?
>>>I am using Ubuntu 14.04 LTS and just pulled GNU Radio and UHD from the
>>>packet sources. There is no newer version available. And I don't
>>>like to
>>>compile myself unless it is absolutely necessar
On 21.10.2014 13:47, Frederik Wing wrote:
> Hello Marcus,
>
> thank you very much for your hints!
- You're using an ancient UHD version. Is there a reason you can't
use a
newer one?
>>> I am using Ubuntu 14.04 LTS and just pulled GNU Radio and UHD from the
>>> packet sources. There
Hello Marcus,
thank you very much for your hints!
- You're using an ancient UHD version. Is there a reason you can't
use a
newer one?
I am using Ubuntu 14.04 LTS and just pulled GNU Radio and UHD from the
packet sources. There is no newer version available. And I don't like to
compile myself u
Hello Frederik,
On 10/20/2014 05:53 PM, Frederik Wing wrote:
Thank you Martin for your fast response!
- You're using an ancient UHD version. Is there a reason you can't use a
newer one?
I am using Ubuntu 14.04 LTS and just pulled GNU Radio and UHD from the
packet sources. There is no newer ver
Thank you Martin for your fast response!
> - You're using an ancient UHD version. Is there a reason you can't use a
> newer one?
I am using Ubuntu 14.04 LTS and just pulled GNU Radio and UHD from the
packet sources. There is no newer version available. And I don't like to
compile myself unless it i
A couple of comments, maybe this helps you on your tracks:
- You're using an ancient UHD version. Is there a reason you can't use a
newer one?
- In current GNU Radio, you can use 'length tags' to mark bursts, if
that's any help.
- You'll know if your USRP hasn't acknowledged tx_eob if you see 'U's
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