The delay is different through Tx data port => Tx RF out => Coaxial cable Connect=>Rx RF in => Rx data port when AD9361 powered on every time.
Maybe the range of delay is in one or two sample rate.The sample rate is 56MHz. And AD9361 is MGC,Dual-Port, Full Duplex,FDD,1RX and 1Tx mode.
Can AD9361 connects the TX RF out port and Rx PF input port internally? So we can calculate the delay of Tx data port => Tx RF out =>Rx RF in => Rx data port everytime powering on.
Or what methods do we use to avoid the problem the the delay is different every time powering on?
With every power up the delay will vary because the synthesizers, Lo dividers etc are getting initialized every time and hence the phase will be random.
MAXIAO@ said:Can AD9361 connects the TX RF out port and Rx PF input port internally?
Yes you can do so by using BIST functionality. Refer to the below links :