[USRP-users] USRP N210 IQ Imbalance Calibration

2018-05-17 Thread kunal sankhe via USRP-users
Hi, I am trying to measure IQ Imbalance of USRP N210 with WBX daughterboard: After running *uhd_cal_rx_iq_balance*, I got following error: *Error: This dboard has no serial!* *Please see the Calibration documentation for details on how to fix this* USRP Probe output: linux; GNU C++ version 5

[USRP-users] USRP X310 Calibration error

2018-05-17 Thread kunal sankhe via USRP-users
Hi, I am trying to measure IQ Imbalance of USRP X310 with UBX-160 daughtboard After running *uhd_cal_rx_iq_balance*, I got following error: terminate called after throwing an instance of 'boost::exception_detail::clone_impl >' what(): boost: mutex lock failed in pthread_mutex_lock: Invalid a

[USRP-users] Disable automatic dc offset and IQ imbalance corrections

2018-05-22 Thread kunal sankhe via USRP-users
Hi, I want to disable automatic calibration of DC offset and IQ imbalance in USRP Source block. I am aware that I need to pass bool value 'false' as the argument to *set_auto_dc_offset* and *set_auto_iq_balance*. The USRP Source block itself provide this facility in the tab *FE Corrections*. Howe

[USRP-users] IQ Imbalance calibration files

2018-05-23 Thread kunal sankhe via USRP-users
Hi, Using *uhd_cal_tx_iq_balance* and *uhd_cal_rx_iq_balance*, I am able to find the coefficients of IQ Imbalance. However, I am having difficulty in interpreting these results. 1) In calibration file, at lo_frequency=915MHz, correction_real=-0.00548 and correction_imag=0.00960. How can I estimat