Among SDRs, there is no universal "model" for things like total gain,
acceptable baseband magnitudes, etc. Even if there were, expected
variations in analog behavior mean that you usually have to tweak things
to make it work across multiple hardware. That's just an attribute of
the analog world th
UPDATE
Even without any Costa loop or clock recovery, it works. It seems that the
trouble was only the TX amplitude.
2016-06-16 9:36 GMT-04:00 Olivier Goyette :
> YEH ! it works now.
>
> Only 2 major things to do :
>
> 1st - I multiplied the TX amplitude by 0.5 with a multiply const
YEH ! it works now.
Only 2 major things to do :
1st - I multiplied the TX amplitude by 0.5 with a multiply const block
2nd - I used a Costa loop before my demod and it works great.
My video got a tiny bit of error but I guess that with a special coding
(reed solomon ) I could get it back in
Hi Olivier,
I guess Nick already pointed out the important bits. Also, the warnings
GRC prints to the shell should help you.
Could you solve your file source issues? Your questions here seem to be
related to a different issue.
Tx flowgraph: get rid of the throttle block. (also see the warni
Ok I will try that. Just for your information, throttle or not, it works in
both cases on the Nutaq Zepto
Le 2016-06-15 17:15, "Nick Foster" a écrit :
> One clue for you is already being printed out for you in the TX flowgraph
> image. Get rid of the throttle block.
>
> The RX time domain plot lo
One clue for you is already being printed out for you in the TX flowgraph
image. Get rid of the throttle block.
The RX time domain plot looks actually pretty healthy. It's showing a
frequency offset, which is normal for unsynchronized devices.
The constellation plot needs to happen after timing a
I'm giving a copy of the email I just sent to Ettus Research. I think that
it's been a hardware problem since the beginning but i'm waiting for their
response.
Check it out, maybe some of view have already seen this kind of bug
*E-mail**
Hi Olivier,
what does this mean:
> The 1st file contains only '1' and the other only '0'.
How did you generate these files. Without knowing better, I'd say this
is a case for our File Format FAQ:
http://gnuradio.org/redmine/projects/gnuradio/wiki/FAQ#What-is-the-file-format-of-a-file_sink-How-can
This is non sense seriously. This is my flowgraph :
https://www.dropbox.com/s/4cfptq5419kvyhz/file_source.png?dl=0
When I send only zeros '0', this is what I get :
https://www.dropbox.com/s/aipf6wsj5ekwxnb/zeros.png?dl=0
When I send only ones '1' this is what I get :
https://www.dropbox.com/s/g38
Hi
I have a problem. On my first setup, I use 2 file source. The 1st file
contains only '1' and the other only '0'. The 2 file sources go through a
selector and end up in a CPFSK mod block. When I run this, switching from
'1' to '0' makes the frequency drift from + to - FSK_deviation like it
shou
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