Re: [Discuss-gnuradio] [USRP-users] Spikes in b210 received data

2015-03-25 Thread Tom Tsou
On Tue, Mar 24, 2015 at 11:07 PM, Arjun Nadh wrote: > Thank you, Tom > That fixes the problem. Great. Thanks for testing. Upcoming UHD and gr-uhd changes will expose more of the AD9361 functionality, which will allow user control of calibration and filters without having to patch UHD. We're also

Re: [Discuss-gnuradio] [USRP-users] Spikes in b210 received data

2015-03-23 Thread Arjun Nadh
Hi Tom, I have tried reducing the signal level. The signal level at the input is now -40dBm. Still there is this ramp behaviour. I also get this when I use the B210 in loopback mode (with a 30dB atttenuator in the loop). Also I have observed that the lower the master clock rate that I set, the le

Re: [Discuss-gnuradio] [USRP-users] Spikes in b210 received data

2015-03-23 Thread Tom Tsou
Hi Arjun, On Fri, Mar 20, 2015 at 11:15 PM, Arjun Nadh via USRP-users wrote: > On observing the received samples, there is a periodic " ramp " on the > received sample. Attaching the plot. I do not observe this effect while > using N210. Also I do not observe this if I use the internal clock. Ca