Re: [Discuss-gnuradio] Native Interface between MATLAB/Simulink and USRP available

2009-05-18 Thread Enno Klasing
Hello Dominik, Dominik Auras schrieb: Did you test this with Linux? Are there any plans to support Linux/GCC etc.? Nope, we have not done anything on Linux with this interface. If somebody wants to maintain a Linux-Version of simulink-usrp, we could add this as a project on e.g. SourceForge

[Discuss-gnuradio] DBSRX filter efficiency?

2009-05-18 Thread Andreas Bogk
Dear Gnuradio hackers, I have problems with the DBSRX module of the USRP: I see GSM on all frequencies. I hope somebody can answer my questions: Is there an antialiasing filter somewhere in the design? If so, what is its nominal efficiency? Where can I find data sheets for the MAX211x

[Discuss-gnuradio] Unable to find USRP#0

2009-05-18 Thread Teodora Petrovic
Hi Can anyone please help me? I am using gnuradio3.1.3. When I try to run usrp_benchmark_usb.py, I get the a RuntimeError: Unable to find USRP #0. When I issue ls -lR /dev/bus/usb | grep usrp, I didn't get any message. This is the first time that I connect USRP board to PC. Please help me.

[Discuss-gnuradio] Want to record Fm samples

2009-05-18 Thread mayur_CEN
Hello, I want to record a FM sample that I am receiving from my USRP.I have attached a file_sink block in the grc to the fm receiver simulation.The file extension that I am using is .dat.When I convert this .dat file to mp3 using sox or lame,my sample is highly degraded than the sample I can

Re: [Discuss-gnuradio] Unable to find USRP#0

2009-05-18 Thread Johnathan Corgan
On Mon, May 18, 2009 at 4:28 AM, Teodora Petrovic li...@ruby-forum.com wrote: Can anyone please help me?  I am using gnuradio3.1.3. When I try to run usrp_benchmark_usb.py, I get the a RuntimeError: Unable to find USRP #0. When I issue ls -lR /dev/bus/usb | grep usrp, I didn't get any

[Discuss-gnuradio] half USRP

2009-05-18 Thread Alberto Trentadue
Hello This is for Matt. I'm not aware about USRP requirement's history, hence I'm asking. I apologise immediately if the question is stupid enough... :-) have you ever think about a simplified USRP, or 1/2 USRP, having only 1 side TX and RX? Would it make a cost difference (maybe on a large

Re: [Discuss-gnuradio] half USRP

2009-05-18 Thread Thomas Schmid
Hi Alberto, the USRP2 is only 1xTX and 1xRX. However, the USRP2 costs more than the USRP1 because of its bigger FPGA and faster ADC/DAC (in addition to SDRAM and other hardware). In short, the cost savings are minimal if you would remove one RX and one TX from the USRP1 (you might be able to

Re: [Discuss-gnuradio] Native Interface between MATLAB/Simulink and USRP available

2009-05-18 Thread Dominik Auras
Hi Enno, If somebody wants to maintain a Linux-Version of simulink-usrp, we could add this as a project on e.g. SourceForge (see below). So if anybody is interested in porting this to Linux _and_ maintaining the Linux-specific parts, please let us know. I already ported it to linux today,

Re: [Discuss-gnuradio] Can't stop the top_block which contain transmit_path with GNU Radio version 11001

2009-05-18 Thread Eric Blossom
On Sun, May 17, 2009 at 07:34:16PM -0700, Ling Huang wrote: To get it to stop, send it a message with type=1. The message source will indicate that it is done and the flow graph will terminate. I set transmit path message with type = 1, but it still not work, it hang in wait()

Re: [Discuss-gnuradio] DBSRX filter efficiency?

2009-05-18 Thread Eric Blossom
On Mon, May 18, 2009 at 12:08:01PM +0200, Andreas Bogk wrote: Dear Gnuradio hackers, I have problems with the DBSRX module of the USRP: I see GSM on all frequencies. I hope somebody can answer my questions: Is there an antialiasing filter somewhere in the design? If so, what is its

Re: [Discuss-gnuradio] DBSRX filter efficiency?

2009-05-18 Thread Andreas Bogk
Eric Blossom wrote: Hi Andreas! Welcome! Thanks! :) Try turning the Rx gain down. Been there, done that. It doesn't get rid of the images. The datasheets should be on Maxim's site, though I think they're discontinuing the part. If you can't locate them, let me know and I'll see

Re: [Discuss-gnuradio] DBSRX filter efficiency?

2009-05-18 Thread Eric Blossom
On Mon, May 18, 2009 at 07:11:43PM +0200, Andreas Bogk wrote: Eric Blossom wrote: Hi Andreas! Welcome! Thanks! :) Try turning the Rx gain down. Been there, done that. It doesn't get rid of the images. The datasheets should be on Maxim's site, though I think they're

Re: [Discuss-gnuradio] half USRP

2009-05-18 Thread Juha Vierinen
have you ever think about a simplified USRP, or 1/2 USRP, having only 1 side TX and RX? Would it make a cost difference (maybe on a large volume basis)? Would it save some space? Reason for asking is that many (most?) applications are 1+1 channel, and saving space may allow more compact

Re: [Discuss-gnuradio] DBSRX filter efficiency?

2009-05-18 Thread Andreas Bogk
Eric Blossom wrote: [datasheets] OK, I'll look for them later on today. Matt sent me the correct part number (MAX2118), and I've found the data sheet. The chip has a controllable IF-filter bandwidth. It can be controlled using the set_bw method on the daugherboard subdevice. Pass it

Re: [Discuss-gnuradio] DBSRX filter efficiency?

2009-05-18 Thread Marcus D. Leech
Eric Blossom wrote: Hi Andreas! Welcome! Try turning the Rx gain down. The datasheets should be on Maxim's site, though I think they're discontinuing the part. If you can't locate them, let me know and I'll see if I can't find one for you. Eric Arh! I knew it had to happen

Re: [Discuss-gnuradio] DBSRX filter efficiency?

2009-05-18 Thread Matt Ettus
Marcus D. Leech wrote: Eric Blossom wrote: Hi Andreas! Welcome! Try turning the Rx gain down. The datasheets should be on Maxim's site, though I think they're discontinuing the part. If you can't locate them, let me know and I'll see if I can't find one for you. Eric Arh! I

Re: [Discuss-gnuradio] half USRP

2009-05-18 Thread Jason Uher
have you ever think about a simplified USRP, or 1/2 USRP, having only 1 side TX and RX? How about a 64 x USRP? It would be cool if there was a USRP that had many receiver channels, and it would also have a simple beam-former built into the FPGA. All of the schematics for the USRP and

[Discuss-gnuradio] USRP1 USB I/F failure repair

2009-05-18 Thread Paul Mathews
About a month ago, our USRP1 Rev. 4.5 (Ser. #2728) became erratic in it USB connection and communications. A short while after, USB failed altogether. I put scope probes on the USB + and - data lines and observed that one of the signals had a much different sort of signal than the other. Following

Re: [Discuss-gnuradio] USRP1 USB I/F failure repair

2009-05-18 Thread Matt Ettus
Paul Mathews wrote: About a month ago, our USRP1 Rev. 4.5 (Ser. #2728) became erratic in it USB connection and communications. A short while after, USB failed altogether. I put scope probes on the USB + and - data lines and observed that one of the signals had a much different sort of signal

Re: [Discuss-gnuradio] USRP1 USB I/F failure repair

2009-05-18 Thread Marcus D. Leech
Matt Ettus wrote: Paul Mathews wrote: Paul, Thanks for your analysis of the situation. C73 and C74 are not actually capacitors, they are, as you say, electrostatic discharge protectors, part number PESD0402-060. I have not seen any fail in the manor you mention, but I suppose enough

Fwd: Re: [Discuss-gnuradio] USRP1 USB I/F failure repair

2009-05-18 Thread Ryan Seal
On Mon, 18 May 2009 19:26:58 -0400, Marcus D. Leech mle...@ripnet.com wrote: Matt Ettus wrote: Paul Mathews wrote: Paul, Thanks for your analysis of the situation. C73 and C74 are not actually capacitors, they are, as you say, electrostatic discharge protectors, part number PESD0402-060. I

Re: [Discuss-gnuradio] Can't stop the top_block which contain transmit_path with GNU Radio version 11001

2009-05-18 Thread Ling Huang
sorry, I'm not familiar with gdb, I can't get many useful infomation from that. The topblock start 6 threads (exept the mainloop) . After tb.stop(), five threads has exited, but leaving one. Here is the gdb infomation after tb.stop()

Re: [Discuss-gnuradio] Can't stop the top_block which contain transmit_path with GNU Radio version 11001

2009-05-18 Thread Ling Huang
And here is the gdb after tb.wait() ---gdb wait--- #0 0xb7f1f430 in __kernel_vsyscall () #1 0xb7e1bdf1 in select () from /lib/tls/i686/cmov/libc.so.6 #2 0xb7efbbc9 in ?? () from

Re: [Discuss-gnuradio] Python bindings for config_mimo, sync_every_pps

2009-05-18 Thread Johnathan Corgan
On Sat, 2009-05-16 at 03:44 +0200, Changkyu Seol wrote: It will be grateful if python bindings for config_mimo, sync_every_pps are added to usrp2_base.h and usrp2.i in gr-usrp2. These calls are now visible (as of trunk r11050) in the Python API as: from gnuradio import usrp2 u =

[Discuss-gnuradio] USRP2 schematic files

2009-05-18 Thread S'dir
Hi, Could you please inform about when we can access USRP2 schematic files. Thanks in advance. Regds, Sudhir ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio