[Discuss-gnuradio] More on Boeing and JTRS problems
A follow up to an article I mentioned previously. It seems like it's a Boeing problem not necessarily an SDR problem. http://www.defensetech.org/archives/001514.html For all these reasons, Boeing now has 30 days to come up with a reason why the Army should not pull the plug on the Jitters contract. ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] Prof. Moglen's speech at linux.conf.au
[EMAIL PROTECTED] (Ramakrishnan Muthukrishnan) writes: > There is an article (only for paid readers at the moment) on Prof Moglen's > speech at linux.conf.au. Here is a quote on SDR situation in Japan. This came in response to a question from the audience from someone who had attended the talk I gave on SDR and gnuradio at the embedded Linux miniconf prior to LCA. Thanks to Eric for the slide set, which I updated with hardware photos and a few of my own observations (will get that out where others can see it sometime soon, too busy today). My talk was very well received. In fact, after Eben's keynote and this discussion in the Q&A, someone suggested to the organizers that I should give the talk again as one of the three "best of" repeats on the afternoon of the last day, and they agreed. So I gave the talk again to a much larger (but less focussed/intimate) audience just before the closing session, hopefully raising the awareness of many LCA attendees to what SDR is all about and what some of the issues are. I believe audio and video of at least some of the LCA talks will show up on the web in a few weeks. Bdale ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
[Discuss-gnuradio] 2.5 GS/sec 14-bit A/D converter
The punchline is towards the end of this article: http://rfdesign.com/mag/radio_new_technology_facilitates TechnoConcepts' RF to digital converter is the first 5 GHz carrier speed RF to digital converter capable of direct conversion of a 5 GHz RF carrier, eliminating all analog IF circuits. This receiver is based on a very high speed 5 GHz delta-sigma converter that digitizes signals by modulating the analog input (radio signal) into a high-speed 1-bit digital datastream. The datastream is then digitally processed on the same IC to produce a high-resolution multiple bit word stream sent at a slower data rate. This is the first device to completely eliminate the need for conventional radio receiver downconverters and the associated external analog components. This RF to digital converter is a closed-loop system in which the order of the loop and the input bandwidth may be changed to achieve the desired resolution. A narrow bandwidth results in higher resolution than a wide bandwidth. Parameter GaAsSiGe Maximum clock frequency > 5 GHz > 15 GHz SINAD (signal to noise+distortion)> 70 dB > 110 dB Eff. resolution bits at 2.5 GHz carrier:14 bits 18 bits 10 MHz BW 11 bits 14 bits ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] 2.5 GS/sec 14-bit A/D converter
I think the chart is misformatted, this seems to make more sense Parameter GaAsSiGe Maximum clock frequency > 5 GHz > 15 GHz SINAD (signal to noise+distortion) > 70 dB > 110 dB Eff. resolution bits at 2.5 GHz carrier: 10 MHz BW 14 bits 18 bits 100 MHz BW 11 bits 14 bits Quoting Eric Blossom <[EMAIL PROTECTED]>: > The punchline is towards the end of this article: > > http://rfdesign.com/mag/radio_new_technology_facilitates > > TechnoConcepts' RF to digital converter is the first 5 GHz carrier > speed RF to digital converter capable of direct conversion of a 5 GHz > RF carrier, eliminating all analog IF circuits. This receiver is based > on a very high speed 5 GHz delta-sigma converter that digitizes > signals by modulating the analog input (radio signal) into a > high-speed 1-bit digital datastream. The datastream is then digitally > processed on the same IC to produce a high-resolution multiple bit > word stream sent at a slower data rate. This is the first device to > completely eliminate the need for conventional radio receiver > downconverters and the associated external analog components. This RF > to digital converter is a closed-loop system in which the order of the > loop and the input bandwidth may be changed to achieve the desired > resolution. A narrow bandwidth results in higher resolution than a > wide bandwidth. > > > > Parameter GaAsSiGe > > Maximum clock frequency > 5 GHz > 15 GHz > SINAD (signal to noise+distortion) > 70 dB > 110 dB > Eff. resolution bits at 2.5 GHz carrier: 14 bits 18 bits > 10 MHz BW 11 bits 14 bits > > > ___ > Discuss-gnuradio mailing list > Discuss-gnuradio@gnu.org > http://lists.gnu.org/mailman/listinfo/discuss-gnuradio > ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
[Discuss-gnuradio] USB 1 for USRP
Dear gnuradio community, I have USRP hardware and related software all set up on my Dell laptop with FC2. My reception of AM/FM stations is still very noisy despite trying out with various antennas. The last I tried with amplified antenna (10 db). Still looking for better solution... I wanted to setup my 2nd USRP hardware on ThinkPad A31p with FC3. All software packages are set up. But found out that this machine has only USB 1 ports; USRP works only with USB 2. Without swithing machines, what can I do? Thanks -suvda ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] USB 1 for USRP
On Wed, Apr 27, 2005 at 03:24:15PM -0500, Suvda Myagmar wrote: > Dear gnuradio community, > > > I wanted to setup my 2nd USRP hardware on ThinkPad A31p with FC3. All > software packages are set up. But found out that this machine has only > USB 1 ports; USRP works only with USB 2. Without swithing machines, what > can I do? Get a USB2 PC-Card. Eric ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] USB 1 for USRP
I've been on the list all of an hour, so I'll comment based on what I've read but don't take my word for it. In terms of physical ports a USB hub would solve that issue. However, there may be a bandwidth issue since you're still only able to receive the equivalent of a single USB port. I hope I didn't totally botch that, but if I did I'm sure someone will jump in and correct me. -Adam Suvda Myagmar wrote: Dear gnuradio community, I have USRP hardware and related software all set up on my Dell laptop with FC2. My reception of AM/FM stations is still very noisy despite trying out with various antennas. The last I tried with amplified antenna (10 db). Still looking for better solution... I wanted to setup my 2nd USRP hardware on ThinkPad A31p with FC3. All software packages are set up. But found out that this machine has only USB 1 ports; USRP works only with USB 2. Without swithing machines, what can I do? Thanks -suvda ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] USB 1 for USRP
Wow. Please ignore me completely. I totally misread your question. That will teach me to respond to e-mail right after a nap. -Adam Adam Israel wrote: I've been on the list all of an hour, so I'll comment based on what I've read but don't take my word for it. In terms of physical ports a USB hub would solve that issue. However, there may be a bandwidth issue since you're still only able to receive the equivalent of a single USB port. I hope I didn't totally botch that, but if I did I'm sure someone will jump in and correct me. -Adam Suvda Myagmar wrote: Dear gnuradio community, I have USRP hardware and related software all set up on my Dell laptop with FC2. My reception of AM/FM stations is still very noisy despite trying out with various antennas. The last I tried with amplified antenna (10 db). Still looking for better solution... I wanted to setup my 2nd USRP hardware on ThinkPad A31p with FC3. All software packages are set up. But found out that this machine has only USB 1 ports; USRP works only with USB 2. Without swithing machines, what can I do? Thanks -suvda ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] USB 1 for USRP
I have a USRP sort of working on USB 1. I still need to test it some more to see if it is useful. I'm trying to get it to talk to an OMAP5912OSK board. Philip On Wed, 2005-04-27 at 15:24 -0500, Suvda Myagmar wrote: > Dear gnuradio community, > > I have USRP hardware and related software all set up on my Dell laptop > with FC2. My reception of AM/FM stations is still very noisy despite > trying out with various antennas. The last I tried with amplified > antenna (10 db). Still looking for better solution... > > I wanted to setup my 2nd USRP hardware on ThinkPad A31p with FC3. All > software packages are set up. But found out that this machine has only > USB 1 ports; USRP works only with USB 2. Without swithing machines, what > can I do? > > Thanks > -suvda > > > ___ > Discuss-gnuradio mailing list > Discuss-gnuradio@gnu.org > http://lists.gnu.org/mailman/listinfo/discuss-gnuradio ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
[Discuss-gnuradio] newbie installation questions
Hi, I am installing gnuradio on fedora core3 and am getting some errors with python, I am able to test the USRP with ./test_usrp_standard_rx and ./test_usrp_standard_rx, but when I try to run ./burn-basic-eeprom I get this error: Traceback (most recent call last): File "./burn-basic-eeprom", line 23, in ? from usrp_prims import * ImportError: No module named usrp_prims Also I get this error when I try to run ./usrp_oscope.py: Traceback (most recent call last): File "./usrp_oscope.py", line 23, in ? from gnuradio import gr ImportError: No module named gnuradio I checked the gnuradio archive and found a related message from about a year ago: http://lists.gnu.org/archive/html/discuss-gnuradio/2004-03/msg00020.html I'm not sure if the Python path variable is the problem or not though. Thanks for your help! ps. I haven't used linux for a few years =) best regards, Jamie Morken and/or any of the test_usrp_standard_rx ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] newbie installation questions
Here is my installation guide for FC3. Not perfect yet, but it might help you out: http://www.kd7lmo.net/ground_gnuradio_install.html On Wed, 27 Apr 2005, Jamie Morken wrote: > Hi, > > I am installing gnuradio on fedora core3 and am getting some errors with > python, I am able to test the USRP with ./test_usrp_standard_rx and > ./test_usrp_standard_rx, but when I try to run ./burn-basic-eeprom I get this > error: > > Traceback (most recent call last): > File "./burn-basic-eeprom", line 23, in ? > from usrp_prims import * > ImportError: No module named usrp_prims > > > Also I get this error when I try to run ./usrp_oscope.py: > > Traceback (most recent call last): > File "./usrp_oscope.py", line 23, in ? > from gnuradio import gr > ImportError: No module named gnuradio > > I checked the gnuradio archive and found a related message from about a year > ago: > http://lists.gnu.org/archive/html/discuss-gnuradio/2004-03/msg00020.html > > I'm not sure if the Python path variable is the problem or not though. > > Thanks for your help! > > ps. I haven't used linux for a few years =) > > best regards, > Jamie Morken > > > > > > > and/or any of the > > test_usrp_standard_rx > > > > > > > ___ > Discuss-gnuradio mailing list > Discuss-gnuradio@gnu.org > http://lists.gnu.org/mailman/listinfo/discuss-gnuradio > ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] newbie installation questions
On Wed, Apr 27, 2005 at 03:41:36PM -0700, Jamie Morken wrote: > Hi, > > I am installing gnuradio on fedora core3 and am getting some errors with > python, I am able to test the USRP with ./test_usrp_standard_rx and > ./test_usrp_standard_rx, but when I try to run ./burn-basic-eeprom I get this > error: > > Traceback (most recent call last): > File "./burn-basic-eeprom", line 23, in ? > from usrp_prims import * > ImportError: No module named usrp_prims > > > Also I get this error when I try to run ./usrp_oscope.py: > > Traceback (most recent call last): > File "./usrp_oscope.py", line 23, in ? > from gnuradio import gr > ImportError: No module named gnuradio > > I checked the gnuradio archive and found a related message from about a year > ago: > http://lists.gnu.org/archive/html/discuss-gnuradio/2004-03/msg00020.html > > I'm not sure if the Python path variable is the problem or not though. > > Thanks for your help! > > ps. I haven't used linux for a few years =) > > best regards, > Jamie Morken Sounds like PYTHONPATH isn't set. Should be something like: $ export PYTHONPATH="/usr/local/lib/python/site-packages" Eric ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] newbie installation questions
On Wed, Apr 27, 2005 at 04:07:50PM -0700, [EMAIL PROTECTED] wrote: > Here is my installation guide for FC3. Not perfect yet, but it might help > you out: > > http://www.kd7lmo.net/ground_gnuradio_install.html > Nice install guide. Thanks. FYI, we don't require numarray, just Numeric. Which piece of the pie requires Xerces? Eric ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] usrper fails in usb_claim_interface
I am now seeing something like this one crop up, very annoying.
Basically, I'm running in RX mode for a while. I stop running. I may
unplug usrp, plug it in. Then:
usrp: found usrp rev2
usrp_open_interface:usb_claim_interface: failed interface 2
could not claim interface 2: No such file or directory
usrp_basic_rx: can't open rx interface
Traceback (most recent call last):
I've tried many things to try to work around it. Sometimes I've tried to
reboot, but that doesn't *always* work. I should say, I'm running a few
things off of USB... an external hard drive, the usrp, and a DB9 serial
adapter thing.
Can it be solved in the same way, rmmod usbtest? Or is there something
else at work?
-jamie
Matt Ettus wrote:
Quoting Larry Doolittle <[EMAIL PROTECTED]>:
On Tue, Apr 05, 2005 at 02:18:19PM -0700, Eric Blossom wrote:
On Tue, Apr 05, 2005 at 12:03:00PM -0700, Larry Doolittle wrote:
I have an Avnet Virtex 4 evaluation board, intended for
projects similar in concept to GNU Radio. It uses the
same CY7C68013 chip as USRP.
I used USRP as a software reference design, and started
splicing in some code of my own. [chop]
2005-04-05 11:20:16.264596500 <6>usbtest 5-1:1.0: FX2 device
2005-04-05 11:20:16.264640500 <6>usbtest 5-1:1.0: high speed {control
bulk-in bulk-out} tests (+alt)
--^^^
You have the usbtest module loaded.
rmmod it.
Eric is right, when I rmmod usbtest this problem goes away.
Someplace in the bowels of debian sid this module is configured
to reload every time I plug in the device, and I then have to
rmmod it again by hand. "find /etc -type f | xargs grep usbtest"
didn't find the magic.
Once you reprogram the EEPROM to something other than the default device,
usbtest stops loading itself.
Matt
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Re: [Discuss-gnuradio] usrper fails in usb_claim_interface
On Wed, Apr 27, 2005 at 09:36:26PM -0400, James Cooley wrote:
> I am now seeing something like this one crop up, very annoying.
>
> Basically, I'm running in RX mode for a while. I stop running. I may
> unplug usrp, plug it in. Then:
When you unplug, are you unplugging from power and/or the usb?
>
> usrp: found usrp rev2
> usrp_open_interface:usb_claim_interface: failed interface 2
> could not claim interface 2: No such file or directory
> usrp_basic_rx: can't open rx interface
> Traceback (most recent call last):
>
>
>
>
> I've tried many things to try to work around it. Sometimes I've tried to
> reboot, but that doesn't *always* work. I should say, I'm running a few
> things off of USB... an external hard drive, the usrp, and a DB9 serial
> adapter thing.
>
> Can it be solved in the same way, rmmod usbtest? Or is there something
> else at work?
>
> -jamie
This doesn't sound like a usbtest problem. That only shows up with
USRP motherboards that haven't had their EEPROM initialized.
Is there anything in the kernel logs?
/var/log/kernel/{errors,warnings,info}
What kernel are you running?
Haven't seen this before. I'll see if I can reproduce it.
Eric
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Re: [Discuss-gnuradio] usrper fails in usb_claim_interface
When you unplug, are you unplugging from power and/or the usb?
Hard to say, I believe I have done both. However, I haven't been able to
piece together an exact set of circumstances that lead to this problem.
Sometimes it happens, sometimes not is about the best that I can say for
now. ;) I've tried many combinations of yanking out, etc. to try to
reproduce, and also so far cannot. Most of the time, it works
beautifully, but when it gets into this funk, there's not much I can do.
I do notice in the logs if I unplug and replug the USB, the kernel does
seem to properly note the device being removed, then re-added and no
problems are associated with it.
How does the USRP know to load its firmware? I notice the first time I
run, there's a bit of a delay as stuff happens behind the scenes. It may
be the case that if it has already been loaded (or thinks it has), this
situation happens. Is there a way to force a re-load or whatever else is
going on?
This is a debian testing distro with a 2.6.10 kernel on top.
Is there anything in the kernel logs?
/var/log/kernel/{errors,warnings,info}
What kernel are you running?
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Re: [Discuss-gnuradio] usrper fails in usb_claim_interface
On Wed, Apr 27, 2005 at 11:19:37PM -0400, James Cooley wrote: > > How does the USRP know to load its firmware? Every time you instantiate a usrp source or sink it checks to see if it needs firmware and/or an fpga bitstream. The library code checks two MD5 hashes that are stored in the FX2 ram, one for the firmware and one for the fpga configuration. Loading both takes about 12 seconds. > I notice the first time I > run, there's a bit of a delay as stuff happens behind the scenes. It may > be the case that if it has already been loaded (or thinks it has), this > situation happens. Is there a way to force a re-load or whatever else is > going on? You shouldn't need to force a reload. If you want to try forcing a reload use this: $ usrper load_standard_bits If you want to see diagnostic messages when it's checking and/or loading the firmware and/or fpga, change the definition of VERBOSE on line 47 of usrp_prims.cc from 0 to 1. > This is a debian testing distro with a 2.6.10 kernel on top. Thanks, Eric ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] 2.5 GS/sec 14-bit A/D converter
I found the description of the TechnoConcepts patent for the "Direct conversion delta-sigma receiver" over at the [US Patent & Trademark Office, Patent Full Text and Image Database], http://patft.uspto.gov/netahtml/srchnum.htm by entering the patent no 6,748,025 search box, and got the following description URL. http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=/netahtml/srchnum.htm&r=1&f=G&l=50&s1=6,748,025.WKU.&OS=PN/6,748,025&RS=PN/6,748,025 /Ulf Eric Blossom wrote: The punchline is towards the end of this article: http://rfdesign.com/mag/radio_new_technology_facilitates TechnoConcepts' RF to digital converter is the first 5 GHz carrier speed RF to digital converter capable of direct conversion of a 5 GHz RF carrier, eliminating all analog IF circuits. This receiver is based on a very high speed 5 GHz delta-sigma converter that digitizes signals by modulating the analog input (radio signal) into a high-speed 1-bit digital datastream. The datastream is then digitally processed on the same IC to produce a high-resolution multiple bit word stream sent at a slower data rate. This is the first device to completely eliminate the need for conventional radio receiver downconverters and the associated external analog components. This RF to digital converter is a closed-loop system in which the order of the loop and the input bandwidth may be changed to achieve the desired resolution. A narrow bandwidth results in higher resolution than a wide bandwidth. Parameter GaAsSiGe Maximum clock frequency > 5 GHz > 15 GHz SINAD (signal to noise+distortion)> 70 dB > 110 dB Eff. resolution bits at 2.5 GHz carrier:14 bits 18 bits 10 MHz BW 11 bits 14 bits ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] USB 1 for USRP
On Thu, 28 Apr 2005 05:54, Suvda Myagmar wrote: > I wanted to setup my 2nd USRP hardware on ThinkPad A31p with FC3. All > software packages are set up. But found out that this machine has only > USB 1 ports; USRP works only with USB 2. Without swithing machines, what > can I do? It should _work_ just at really low data rates. You can get USB2.0 Cardbus cards pretty cheaply though. -- Daniel O'Connor software and network engineer for Genesis Software - http://www.gsoft.com.au "The nice thing about standards is that there are so many of them to choose from." -- Andrew Tanenbaum GPG Fingerprint - 5596 B766 97C0 0E94 4347 295E E593 DC20 7B3F CE8C pgpuixIVPqOl4.pgp Description: PGP signature ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
[Discuss-gnuradio] DC component and daughter-boards
Hi, Matt in a previous thread you were talking about making d/b that let DC component pass: > If there is enough interest, I might make such a set of boards. If someone > else > is interested in the design, the BasicRX/TX are a great starting point, and I > can offer guidance. When i'm inspecting the my FIR output, it's really difficult to measure a 30ns (one sample) delay if the signal is not clean. Would it be possible to make a quick but not perfect hack of the basicTX and RX, something like: - removing transformer - Short-cut pin 3 to 6 and 1 to 4 the resulting impedance would be 40 Ohms (50 // 50+200+50), but is it really bad for low freq square wave < 2MHz ? And be sure to send a positive signal... I dont know how the converter will deal with the DC component and the 2's complement internal encoding though. Thanks, cheers Damien ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
