Hi Vincenzo,
I believe that this is because you are now attempting 16MHz total
bandwidth, 8 from each channel. If you have a decimation rate of 8, you
have 8Msps per second on one channel, and 8Msps on the other channel.
The USB bus cannot handle this... it's not about your host computer.
-
really thanks George,
I figured it out and it seems to work..
now I'm wondering why, if I enable two channels from the usrp with :
if not self.u.set_nchannels(nchan):
sys.stderr.write('set_nchannels(%d) failed\n' % (nchan,))
raise SystemExit
and attempt to trans
Hi,
It's very simple.
Take a look at the Verilog FPGA code:
http://gnuradio.org/trac/browser/gnuradio/trunk/usrp/fpga/sdr_lib/rssi.v
I actually think it's masking out 2^-11 by default.
See everywhere where it has [25:10] ... this means that it is masking
out the bottom 11 bits (10,9,8..0). I
Hi,
I'm working on RSSI value and reading mailing lists I have understood how RSSI
is calculated. In the algorithm of RSSI in verilog alpha value is 2^-10 because
the shift is made on 10 bits. I want to change alpha value (decrease or
increase) but I don't understand how I can change it in the algo
Hi Sanmi,
I'm going to CC this to the list. Maybe someone else has some ideas.
When you say "meant to be transmitted on both channels" ... the simple
fix for this would be to transfer it over the USB once, and feed it to
both TX chains.
But, let me assume for a second that you mean two long
On Thu, Feb 21, 2008 at 06:04:52PM +0100, Per Zetterberg wrote:
> I have tried now with a better computer (Dell620) - same results.
Did you check to see if the machine is running at full speed? That
is, not throttled back to save power?
> Is the USB-rate in transmit-only 32MByte/sec ?
Yes. The
Hi:
Josh Blum is right!
Use the latest grc trunk(by command $svn..), it can work.
But, use the grc 0.69 is not work.
Thanks.
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On
Behalf Of JackyYang
Sent: Thursday, February 21, 2008 4:03 PM
To: discuss-gnuradio@gnu.org
Subject: [Dis
Casey Tucker wrote:
I'm trying to make GNUradio work properly on cygwin now. I've configured
and compiled SDL 1.2.13 normally, and my sdl-config has -mno-cygwin in its
--cflags. GNUradio still fails to find SDL properly when configuring,
stating
that it cannot find alloca.h. I've done a lot of
Prasanna,
I have the datasheet you're looking for. I had to ask Microtune for it;
it's not online. I'll send it to you in a separate email.
--Paul
Prasanna Rao wrote:
Hii all,
I purchased Mircotune's 4937-DI5 Tuner from Ettus LLC in December last
year.. I got the 3X7901 one. How differen
I'm trying to make GNUradio work properly on cygwin now. I've configured and
compiled SDL 1.2.13 normally, and my sdl-config has -mno-cygwin in its
--cflags. GNUradio still fails to find SDL properly when configuring, stating
that it cannot find alloca.h. I've done a lot of googling on the subj
Jacky,
This is because the latest gnuradio trunk no longer has blks package.
You can run gnuradio 3.1.1 release with grc 0.69. Or, use the latest grc
trunk with the latest gnuradio trunk.
Let me know if there are any problems. Sometime soon, I should make a
grc release that works with the cu
Hii all,
I purchased Mircotune's 4937-DI5 Tuner from Ettus LLC in December last
year.. I got the 3X7901 one. How different is it from 3X8899? I have the
datasheet of 3X8899.
If 7901 has a different set of specs from 8899 then someone pls provide me
it's datasheet.
Thanking you in anticipation..
Hi:
I download grc_0.69 and run it.
But I gat error message:
[EMAIL PROTECTED]:~/grc_0.69/src$ python Editor.py
Traceback (most recent call last):
File "Editor.py", line 46, in
from ActionHandler import ActionHandler
File "/home/jacky/grc_0.69/src/ActionHandler.py", line 29,
13 matches
Mail list logo
