Re: [USRP-users] help with receivng multiple frequencies

2017-08-10 Thread Snehasish Kar via USRP-users
Thanks a lot! BR Snehasish On 11-Aug-2017, at 12:20 AM, "mle...@ripnet.com" > wrote: It's default to internal anyway. IF this is a single motherboard, then no external clock sync is required, but you still need the use

Re: [USRP-users] help with receivng multiple frequencies

2017-08-10 Thread Marcus D. Leech via USRP-users
It's default to internal anyway. IF this is a single motherboard, then no external clock sync is required, but you still need the use timed-commands on the tuning. If this is multiple USRP units, then, yes, you'll need to use an external synchronization source in addition to the above--this

Re: [USRP-users] help with receivng multiple frequencies

2017-08-10 Thread Snehasish Kar via USRP-users
Thanks for explaining the commands, it is of real help. One more point if set the clock and time source as internal, will it bring the two receivers in sync, as I did the same thing with uhd_source in gnuradio and the two boards were in sync. What's your opinion on this? BR Snehasish On

Re: [USRP-users] help with receivng multiple frequencies

2017-08-10 Thread Marcus D. Leech via USRP-users
You can use rx_multi_samples as an example -- the source code is freely available. You'll need to use the "set_rx_freq" (and/or "set_tx_freq") function that is part of any multi_usrp object, also, use timed commands around the tuning commands: usrp->set_command_time(SOME_TIME_IN_NEAR_FUTURE)

Re: [USRP-users] help with receivng multiple frequencies

2017-08-10 Thread Snehasish Kar via USRP-users
Tried that and yeah the default code works, but can you help me in understanding how do I tune the two daughter boards separately to two different frequencies and receive data from them parallely. Also I need to time synchronise the two daughter boards, how to achieve that. BR Snehasish On

Re: [USRP-users] help with receivng multiple frequencies

2017-08-10 Thread Marcus D. Leech via USRP-users
This may be timing-out due to performance issues on your host, or it may be a bug in your code. Have you tried using the the rx_multi_samples example at the same sample rates? 2 x 50Msps is a lot of data, and with the short "packets" on PCIe, your computer will be working fairly hard at

Re: [USRP-users] help with receivng multiple frequencies

2017-08-10 Thread Snehasish Kar via USRP-users
It's connected via the pcie cable. BR Snehasish On 10-Aug-2017, at 9:04 PM, Marcus D. Leech > wrote: On 08/10/2017 05:26 AM, Snehasish Kar wrote: Please find the log below: linux; GNU C++ version 4.8.4; Boost_105400; UHD_003.010.002.000-0-unknown

Re: [USRP-users] help with receivng multiple frequencies

2017-08-10 Thread Marcus D. Leech via USRP-users
On 08/10/2017 05:26 AM, Snehasish Kar wrote: Please find the log below: linux; GNU C++ version 4.8.4; Boost_105400; UHD_003.010.002.000-0-unknown Creating the usrp device with: ... -- X300 initialization sequence... -- Connecting to niusrpriorpc at localhost:5444... -- Using LVBITX bitfile

Re: [USRP-users] help with receivng multiple frequencies

2017-08-10 Thread Snehasish Kar via USRP-users
r Cc: usrp-users@lists.ettus.com Subject: Re: [USRP-users] help with receivng multiple frequencies Could you perhaps post a complete log of your program run? On 2017-08-09 13:12, Snehasish Kar wrote: Sorry for that, basically I tried the below code, but I get an error saying "

Re: [USRP-users] help with receivng multiple frequencies

2017-08-09 Thread Marcus D. Leech via USRP-users
gt; BR > > Snehasish > - > > FROM: USRP-users <usrp-users-boun...@lists.ettus.com> on behalf of Marcus D. > Leech via USRP-users <usrp-users@lists.ettus.com> > SENT: Wednesday, August 9, 2017 9:10:51 PM > TO: usrp-users@lists.ettus.com > SUBJ

Re: [USRP-users] help with receivng multiple frequencies

2017-08-09 Thread Snehasish Kar via USRP-users
Leech via USRP-users <usrp-users@lists.ettus.com> Sent: Wednesday, August 9, 2017 9:10:51 PM To: usrp-users@lists.ettus.com Subject: Re: [USRP-users] help with receivng multiple frequencies On 08/09/2017 10:29 AM, Snehasish Kar via USRP-users wrote: Hi I am trying to receive multiple frequenc

Re: [USRP-users] help with receivng multiple frequencies

2017-08-09 Thread Julian Arnold via USRP-users
Also, please don't open a new thread if you have already opened one for the same issue ([USRP-users] Help with rx_multi_sample) that is waiting for details from your side. On 08/09/2017 05:40 PM, Marcus D. Leech via USRP-users wrote: > On 08/09/2017 10:29 AM, Snehasish Kar via USRP-users wrote: