Re: [Discuss-gnuradio] Connecting two USRPs in one laptop in gnuradio companion

2018-05-21 Thread Neel Pandeya
If you're concerned about frequency stability, then you might want to consider using a GPSDO with your B210. --​Neel Pandeya On 21 May 2018 at 04:24, Inkyu Bang wrote: > Dear Neel Pandeya > > I have test in the following setup > > Center frequency: 5.89GHz (I am using the antenna supporting t

Re: [Discuss-gnuradio] Connecting two USRPs in one laptop in gnuradio companion

2018-05-21 Thread Inkyu Bang
Dear Neel Pandeya I have test in the following setup Center frequency: 5.89GHz (I am using the antenna supporting this center frequency) Sampling rate: 5MHz Frequency of sine wave: 1kHz From others’ comments, I realized that cancellation will not be successful if I do not calibrate LO offsets,

Re: [Discuss-gnuradio] Connecting two USRPs in one laptop in gnuradio companion

2018-05-20 Thread Neel Pandeya
Hello Inkyu Bang: Just repeating what Marcus asked. What sample rate are you using? Is this USB 2.0 or 3.0? Could you post your flowgraph? --​Neel Pandeya On 24 April 2018 at 06:08, Marcus D. Leech wrote: > On 04/24/2018 06:09 AM, Inkyu Bang wrote: > > Hi, > > I am trying to use two USRP (B

Re: [Discuss-gnuradio] Connecting two USRPs in one laptop in gnuradio companion

2018-04-24 Thread Marcus D. Leech
On 04/24/2018 06:09 AM, Inkyu Bang wrote: Hi, I am trying to use two USRP (B210) in one laptop. I plan to send signals using two USRPs from the same source. When I tried to separately run ".grc" file in each terminal, it works correctly. However, when I tried to add one more "UHD: USRP sink"

Re: [Discuss-gnuradio] Connecting two USRPs in one laptop in gnuradio companion

2018-04-24 Thread Dave NotTelling
Inkyu, At least in 3.9.4 that could be a sequence number error ( https://github.com/EttusResearch/uhd/blob/release_003_009_004/host/lib/usrp/common/async_packet_handler.hpp#L62). Odd that you're seeing that with USB. Not really sure how to help you with that part. -Dave On Tue, Apr 24, 201

[Discuss-gnuradio] Connecting two USRPs in one laptop in gnuradio companion

2018-04-24 Thread Inkyu Bang
Hi, I am trying to use two USRP (B210) in one laptop. I plan to send signals using two USRPs from the same source. When I tried to separately run ".grc" file in each terminal, it works correctly. However, when I tried to add one more "UHD: USRP sink" block in GRC. It shows an exception message "