Our company adopts two AWR2243 cascade schemes, 20GHz LO connection is as follows: Master AWR 2243 FM_SYNCOUT connects to 2-way Splitter to feed Master AWR 2243 FM_CW_SYNCIN1 and Slave AWR 2243 FM_CW_SYNCIN1（Note:2-way Splitter and PCB stackup refer to TI 4-AWR 2243 cascde demo，Program code refers to newest dfp）。 During debug, some phenomenon are founded:
(1)、Sweep frequeny within the scope of 76 ~ 77 GHZ,LVDS output of Master AWR2243 is OK,LVDS output of Slave AWR2243 is about 0。Sweep frequeny within the scope of 77 ~ 81GHZ，LVDS output of Master and Slave are about 0。
(2)、If two AWR2243 are set to single-chip mode,Sweep frequeny within the scope of 76 ~ 81 GHz,LVDS output of two AWR2243 are OK。
Please ask:20GHz LO connection is OK? Program code need to modify?
