Re: [Discuss-gnuradio] USRP phase to sample index relation in the DDC/DUC chain

2017-07-03 Thread Marcus Müller
Hello Nicolas, sorry for the delayed reaction! So, the signal chain looks roughly like this: RX: ADC (@Master Clock Rate (MCR) --> Rotator (@MCR) --> decimator --> Host (@user-requested sampling rate) TX: Host (@user sampling rate) --> interpolator --> Rotator (@MCR) --> DAC (@MCR) The two r

[Discuss-gnuradio] USRP phase to sample index relation in the DDC/DUC chain

2017-06-09 Thread Nicolas GALLAND
Hello everyone, I am using a USRP X310 with basic RX and basic TX daughterboards and I would like to know the exact relation between the number I enter as a parameter for the central frequency in the UHD USRP sink/source block (which is a real number) and the actual phase per each sample. As