Re: [Discuss-gnuradio] Large RX Delay

2006-11-13 Thread Eric Blossom
On Mon, Nov 13, 2006 at 10:19:22PM -0800, Thomas Schmid wrote: > > No, I do not log the received data into a file. I record the wave > forms on the oscilloscope and do a post processing on them in octave. > > >> First of all, I don't understand why we have such a high delay. > >> Shouldn't it be

Re: [Discuss-gnuradio] Large RX Delay

2006-11-13 Thread Thomas Schmid
Hi Eric, On 11/13/06, Eric Blossom <[EMAIL PROTECTED]> wrote: On Mon, Nov 13, 2006 at 05:03:17PM -0800, Thomas Schmid wrote: > I am currently investigating different USRP delays. Some of them I can > explain, others not. For example, I see an average delay of 6.2ms > while receiving data from th

Re: [Discuss-gnuradio] Large RX Delay

2006-11-13 Thread Eric Blossom
On Mon, Nov 13, 2006 at 05:03:17PM -0800, Thomas Schmid wrote: > I am currently investigating different USRP delays. Some of them I can > explain, others not. For example, I see an average delay of 6.2ms > while receiving data from the USRP at a sample rate of 8MHz (short > real samples, i.e. I am

[Discuss-gnuradio] [Fwd: [Moon-net] SDR-IQ receiver]

2006-11-13 Thread Robert McGwier
RFSpace of the SDR-14 sent the following email to Moon-Net: from Pieter Ibelings, [EMAIL PROTECTED] " Guys, RFSPACE will soon release the little brother of the SDR-14 receiver. This receiver covers the frequency range of 500 Hz to 30 MHz in 1 Hz steps. It can also be used for higher frequencie

Re: [Discuss-gnuradio] Xilinx SFF SDR Platform

2006-11-13 Thread Lin HUANG
It is not the same type of product as USRP. It don't need to work with GNURadio I think. The products of xilinx, including other big companies, Spectrum, ICS, Pentek... can complete all the signal processing on the board. They have high processing speed, fast real-time reaction performance. The cos

[Discuss-gnuradio] Re: USRP push-to-talk?

2006-11-13 Thread scaperot
all, I am interested in controlling the USRP to do a half duplex operation: (when I say transmit, stop receiving, and when I say receive, stop transmit). I have been reading about the output enable registers, and in a previous discussion, you suggested doing something like: u_rx = usrp.source_c(

Re: [Discuss-gnuradio] Large RX Delay

2006-11-13 Thread Daniel O'Connor
On Tuesday 14 November 2006 12:10, Thomas Schmid wrote: > I use the outb command to change the parallel port. From what I read, > that command should have a delay of around 1 \mu s, not more. I am not Hmm, well you probably will incur a few microseconds because you need to talk to the legacy hard

Re: [Discuss-gnuradio] Large RX Delay

2006-11-13 Thread Thomas Schmid
I use the outb command to change the parallel port. From what I read, that command should have a delay of around 1 \mu s, not more. I am not sure about the context switches, but I am almost sure that this is not the problem. I don't run anything else on the machine (i.e., no other heavy load proce

Re: [Discuss-gnuradio] Large RX Delay

2006-11-13 Thread Daniel O'Connor
On Tuesday 14 November 2006 11:33, Thomas Schmid wrote: > First of all, I don't understand why we have such a high delay. > Shouldn't it be more in the hundreds of /mu s instead of in the ms > range? Second, why is the delay shorter for decimation 64, and again > larger for a decimation of 256? Ho

[Discuss-gnuradio] Large RX Delay

2006-11-13 Thread Thomas Schmid
I am currently investigating different USRP delays. Some of them I can explain, others not. For example, I see an average delay of 6.2ms while receiving data from the USRP at a sample rate of 8MHz (short real samples, i.e. I am using the usrp.source_s). Here is my setup: - I have a function genera

Re: [Discuss-gnuradio] NetBSD Package Collection for GNU Radio 3.0.2

2006-11-13 Thread Eric Blossom
On Tue, Nov 14, 2006 at 06:36:36AM +1030, Berndt Josef Wulf wrote: > G'day, > > For those running NetBSD, I've updated the NetBSD Packages Collection to > accommodate the release of GNU Radio 3.0.2. Thanks Berndt! Eric ___ Discuss-gnuradio mailing

[Discuss-gnuradio] NetBSD Package Collection for GNU Radio 3.0.2

2006-11-13 Thread Berndt Josef Wulf
G'day, For those running NetBSD, I've updated the NetBSD Packages Collection to accommodate the release of GNU Radio 3.0.2. GNU Radio is split into modular packages, see below, giving users maximum control over the installation process. Those that are lazy may issue "make install" inside the m

[Discuss-gnuradio] Xilinx SFF SDR Platform

2006-11-13 Thread Brian Padalino
I just read that Xilinx has come out with an interesting small form factor SDR platform. More details can be found here: www.xilinx.com/dsp/sffsdr It's a shame they are priced so high, but it would be very interesting to see how difficult it might be to get GNURadio to work with other sets of

Re: [Discuss-gnuradio] Reg : GNU RADIO HARDWARE QUERY

2006-11-13 Thread Matt Ettus
[EMAIL PROTECTED] wrote: > > Dear All, > > >I have built the GNU radio system and I'm working around with > the examples. I am having a idea of implementing a system where one > radio station will be streamed to the soundcard while the other > stations are being recorded in the background.

[Discuss-gnuradio] Re: Help with Verilog

2006-11-13 Thread seph 004
Message: 2Date: Fri, 10 Nov 2006 08:03:11 -0800From: Eric Blossom <[EMAIL PROTECTED]>Subject: Re: [Discuss-gnuradio] Re: Help with VerilogTo: seph 004 <[EMAIL PROTECTED]>Cc: discuss-gnuradio@gnu.orgMessage-ID: <[EMAIL PROTECTED]>Content-Type: text/plain; charset=us-asciiOn Fri, Nov 10, 2006 at 12:5

[Discuss-gnuradio] Reg : GNU RADIO HARDWARE QUERY

2006-11-13 Thread shriram.vasudevan
Dear All,    I have built the GNU radio system and I'm working around with the examples. I am having a idea of implementing a system where one radio station will be streamed to the soundcard while the other stations are being recorded in the background. >From what I understand from Daw