[Discuss-gnuradio] N210s, USRP2s, daughterboards for sale

2014-08-21 Thread mepard
My employer is closing up shop and we’re selling our Ettus gear (along with some other lab gear). 4 - N210 2 - USRP2 2 - DBSRX 6 - DBSRX2 (At least one of these has been modified, though) 3 - SBX 5 - LFRX 1 - LFTX 1 - Basic TX 1 - Basic RX 2 - XCVR2450 1 - WBX Our CFO is motivated to sell so ema

Re: [Discuss-gnuradio] About "FPGA-ADC/DAC and RF frontend" Latency

2013-05-03 Thread mepard
Hint 1: If both 210s are on the same PPS and frequency reference and the FPGA clocks are synchronized to the PPS, you can schedule the transmit and receive to within one tick of the 100 MHz ADC clock. Hint 2: Cross correlate the transmitted and received samples. The lag will be independent of

Re: [Discuss-gnuradio] Configure UHD source and File sink to save integers

2013-03-05 Thread mepard
On Mar 4, 2013, at 6:11 PM, Josh Blum wrote: > On 03/04/2013 03:07 PM, mepard wrote: >> >> >> One thing I forgot is that I'd like to convert complex to a single >> sint16 with just the "real" part, like I can convert complex to >> single float.

Re: [Discuss-gnuradio] Configure UHD source and File sink to save integers

2013-03-04 Thread mepard
On Mar 4, 2013, at 2:43 PM, Josh Blum wrote: > > On 03/04/2013 02:36 PM, mepard wrote: >> I'd like to feed a File Sink from a UHD Source with 4 channels -- 2 >> motherboards, each with A:A A:B subdev specs. To cut down on the file >> size, I'd like to record

[Discuss-gnuradio] Configure UHD source and File sink to save integers

2013-03-04 Thread mepard
I'd like to feed a File Sink from a UHD Source with 4 channels -- 2 motherboards, each with A:A A:B subdev specs. To cut down on the file size, I'd like to record integers instead of floating point. Which data type should I tell the UHD source to produce? Which type should I tell the File Sink

Re: [Discuss-gnuradio] LFRX A:A and A:B as independent channels in GRC

2013-02-08 Thread mepard
On Feb 7, 2013, at 5:42 PM, Josh Blum wrote: > On 02/07/2013 05:25 PM, mepard wrote: >> Using just Gnu Radio Companion, is there a way to get the A and B >> inputs of an Ettus LFRX (or BasicRX) in an N210 as independent >> channels? > > Setup the source block for 2 ch

[Discuss-gnuradio] LFRX A:A and A:B as independent channels in GRC

2013-02-07 Thread mepard
Using just Gnu Radio Companion, is there a way to get the A and B inputs of an Ettus LFRX (or BasicRX) in an N210 as independent channels? Specifying A:AB as the subdevice and using a Complex-to-Float might work, but I'm wondering if the complex rx chain in the FPGA would conflate what are othe