AWR2243: 2 PCS AWR2243 cascaded, 6 channel TX simultaneously open for longer distance, how to compensate phase of different channel?

Hello team,

    One question:  if I use 2 pcs 2243 to open 6  channel TX for longer distance, I hope 6 channel TX has same phase for best performance, but different chip and different channel, even different RF line, it will effect initial phase of every channel, how can I compensate it?  2243 can adjust tx phase by 5.625 degree step, but you must know the different phase of every channel, then you can use it to compensate it. How can I measure the initial phase of every channel?

  thanks!