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CC2541EMK: CC2541

Part Number: CC2541EMK
Other Parts Discussed in Thread: CC2541

Hi,  CC2541 experts, 

I'm trying to measure the CC2541 TX power level by using CC2540DK and CC2541EMK.     

Even CC2541 max TX power is notified as 0dBm,  actual max measurement was about -4dBm.   4dB lower than the spec.    

I did  control TX power by HCI command through RS232 I/F.   And verified TX power level is being changed by HCI command.  

The measurement was done by Advantest's spectrum analyzer R3267.    Other BLE tool like Tescom's TC-3000c

also shows the same result.    

I think CC2541EMK should be most optimized  sample PCB to check CC2541 RF performance. 

What would be the problem ?   Anybody could help this ?  

Thanks !

YS