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CC2541: "LOCK_STATUS" stays grey in SmartRF Studio during TX and RX

Part Number: CC2541


I am using the smartRF studio 7 for test CC2541. plan to use this APP to control C2541 to send RF signal to the test device.

I use SMA cable to replace the antenna, in order to connect to test device. the SMA cable connect to CC2541 is correct and checked by other BLE module.

currently the APP can identify the CC2541 and then start the TX command, but there is no RF signal been monitored.

the "lock_status" is grey. what happen and how can I correct it.

before the test, this demo board can be used to communicate with smart phone, and it works very well.