Hello Henning,
I don't have advice on TDMA in GNU Radio, but want to step in and make sure
that you have attenuation between the two B200's. The recommended maximum
receive power on the B200 is -15 dBm and the transmit power is up to 10
dBm. It sounds like you probably do have attenuation and aren't overdriving
the ADCs given that you have a successful data link, but as a note to
others reading the thread in the future 20 to 30 dB of attenuation is
recommended as a safety measure to guard against accidental damage.
Regards,
Derek
On Tue, Mar 29, 2016 at 1:52 AM, Henning Bredenberg <
address@hidden> wrote:
Hi all,
I'm using GNU-Radio for some weeks now and i try to implement a little
project. This list already helped me to get into it. Thanks for that.
First step of my project now is to implement a simple tdma-frame using two
USRPs B200 connected via a coax cable. The first 20ms of a 80ms-frame are
assigned for me.
I used the tunnel.py, which builds a TAP-device. I got that working so far
and so i configured two virtual ethernet interfaces (gr0 and gr1) which i
can ping successfully. The aim is now to use this virtual interfaces to
emulate the occuring delays of my communication system in grc. Therefor i
tried to use the tdma_engine.py of pre-cog (grextras included) but some
issues occured due to the change from 3.6 to 3.7. I read about it in the
archives but it was all pretty outdated.
Are there any newer templates to implement a tdma structure? Or is it
advisable to use tdma_engine.py?
best regards,
Henning
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