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ORX Internal LO and TX_LO effect TX EVM performance issue

Category: Software
Product Number: AD9371

when we configured ORX path to TX_LO and Interanl_LO, why TX_LO EVM performance is worse than Internal_LO?


Parents Reply
  • Are you using eval board or custom board? What is the TX LO frequency? 5% EVM is more and you should not get so high EVM. You should see ~1%EVM . TX EVM should not get impacted by the LO source. Can you check if the REF_CLK to the board is clean and jitter free? Also, check for its phase noise. Check the power supply, in case of a custom board.

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