Re: [Discuss-gnuradio] Bandpass Sampling

2014-12-08 Thread Richard Bell
I've seen the the UHD manual but not the performance measures doc. It is not opening for me. If it has a block diagram of the WBX board, then that is what I was looking for. There is no more information I need at this time. Your previous answer was helpful and what I was looking for. Yes you can

Re: [Discuss-gnuradio] how send random values to selector every n-times

2014-12-08 Thread Vitt Benv
Thanks Sreeraj, just a quick test without success :-( I've tested the example in the tutorial and it work, so I've to read carefully the section to understand how put hand on my code. Next days I'll be away for my job so next tests maybe done during next weekend. I'll report results ;-) Byebye

Re: [Discuss-gnuradio] Bandpass Sampling

2014-12-08 Thread Marcus Müller
There's so much Marcus in here ;) so here's my answer: usually, you'd use the USRP+WBX as direct conversion receiver, not an IF one. Regarding WBX documentation: have you seen the performance measurements [1], and the UHD manual [2]? Is there some specific information you're missing? Best regard

Re: [Discuss-gnuradio] Bandpass Sampling

2014-12-08 Thread Richard Bell
I think Marcus answered my question. Thank you. On Mon, Dec 8, 2014 at 11:53 AM, Richard Bell wrote: > I'm apologize. I am using a WBX card. > > I forgot to mention that I've been looking for a datasheet for the WBX, > but all I can find is the PCB schematic doc on the ettus website which > isn'

Re: [Discuss-gnuradio] Bandpass Sampling

2014-12-08 Thread Richard Bell
I'm apologize. I am using a WBX card. I forgot to mention that I've been looking for a datasheet for the WBX, but all I can find is the PCB schematic doc on the ettus website which isn't very useful. So I don't know what the IF frequency coming out of the WBX is. Does the WBX tune itself given the

Re: [Discuss-gnuradio] Bandpass Sampling

2014-12-08 Thread Marcus Müller
Hi Rich, just a hint first: this is an interesting question, but it's very USRP-centric; there's the usrp-users mailing list especially for USRP-related things, which I find quite interesting, most of the time [1] :) The N210 is a modular USRP, meaning that the mixing is usually done on a daughte

Re: [Discuss-gnuradio] Bandpass Sampling

2014-12-08 Thread mleech
The N2xx series use a fixed sample rate, so there's no "deciding what sample rate to use based on Fc". There's also the analog bandwidth of the ADC to consider. If you aren't going to use a downconverter card, then the analog bandwidth of the ADC will start to roll-off at some point, so even i

[Discuss-gnuradio] Bandpass Sampling

2014-12-08 Thread Richard Bell
I have a binary FSK signal centered at 300 MHz with 160 kHz offset peaks from the center freak. Therefore the lowest signal frequency of interest is 300-0.16 = 299.84 MHz and the highest is 300.16 MHz. I know the maximum sampling rate of the USRPN210 ADC is 100 MSPS. If the USRP uses that sample r

[Discuss-gnuradio] Update to gr-dvbt2

2014-12-08 Thread Ron Economos
The gr-dvbt2 DVB-T2 transmitter has now been tested with a real receiver (a PCTV 292e USB stick). The BBC 32K/256QAM mode works fine on bladeRF (40.2 Mbps in an 8 MHz channel). CPU usage is about 60% on all four cores of an Intel E5-1607. I've added links to test streams in the README for others

Re: [Discuss-gnuradio] two WBX boards synchronization

2014-12-08 Thread mleech
You haven't stated which USRP motherboard platform, but I assume you're talking about the USRP1, given the 4RX image. Yes, the samples will be aligned in time, but the relative phase will be random every time you re-tune or start a new session. On 2014-12-08 06:03, Nemanja Savic wrote: > Hi

Re: [Discuss-gnuradio] how send random values to selector every n-times

2014-12-08 Thread sreeraj r
Hi, Please go through the tutorial [1]. Short version, 1. Use one 5in-1out selector block 2. Use on "Function Probe" block 3. Set the "Poll Rate" based on your delay 4. Generate python file using "Generate flowgraph" button 5. Set your selector's input index in the function probe Sample functio

[Discuss-gnuradio] two WBX boards synchronization

2014-12-08 Thread Nemanja Savic
Hi all guys, I am about to make a receiver with two WBX daughterboards. I want to receive simultaneusly with horizontal and vertical antenna. For this purpose I want to use 4RX FPGA image. My question signals obtained in this way, from two daughterboards, alligned in time? Many thanks, -- Neman