Re: [USRP-users] uhd error

2019-12-22 Thread Snehasish Kar via USRP-users
Hello Marcus I am running at a sample rate of 2e6. What I am doing is tuning the usrp and streaming samples for 1 sec and then stopping the stream and re-tuning to another frequency and doing the same. My ethernet controller details are as follows: Realtek Semiconductor Co., Ltd. RTL8111/8168/8

Re: [USRP-users] uhd error

2019-12-22 Thread Marcus D. Leech via USRP-users
On 12/22/2019 11:15 AM, Snehasish Kar via USRP-users wrote: Hello Does anyone have a idea why the following error occurs terminate called after throwing an instance of 'uhd::io_error' what(): EnvironmentError: IOError: [0/Radio_1] sr_write() failed: EnvironmentError: IOError: Block ctrl (CE_

[USRP-users] uhd error

2019-12-22 Thread Snehasish Kar via USRP-users
Hello Does anyone have a idea why the following error occurs terminate called after throwing an instance of 'uhd::io_error' what(): EnvironmentError: IOError: [0/Radio_1] sr_write() failed: EnvironmentError: IOError: Block ctrl (CE_02_Port_50) no response packet - AssertionError: bool(buff)

[USRP-users] USRP B205 mini + uhd::usrp::multi_usrp_uhd + multithreading

2019-12-22 Thread Melnikov, Roman via USRP-users
Hello everyone, I have 8 b205mini devices, and I use uhd::usrp::multi_usrp::make(...) I try to read from each device from different thread When I run the profiler what I see is that libusb has single thread that do polling ! When I run 8 applications each in different process my performance is

Re: [USRP-users] Pulsations on a QPSK transmission

2019-12-22 Thread Ron Economos via USRP-users
Just to show it, here's the Gqrx effect I was talking about. http://www.w6rz.net/gqrx.mp4 Ron On 12/22/19 07:04, Marcus Müller wrote: OK, we'll need a recording of the signal with the stripes, not just a GQRX screenshot, I'm afraid. Could you simply record the complex baseband for maybe 5 to 1

Re: [USRP-users] Pulsations on a QPSK transmission

2019-12-22 Thread Marcus Müller via USRP-users
OK, we'll need a recording of the signal with the stripes, not just a GQRX screenshot, I'm afraid. Could you simply record the complex baseband for maybe 5 to 10 pulsations duration? Preferably also asecond recording from a slightly different TXfrequency, but at the same RX frequency. Best regar