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CC1110 - Baudrate of 1.2K

Alcidia Duarte
Prodigy 140 points

Hi.


I have two boards with cc1110. Minimum baudrate that I get it's 2.4K. If I put in Smart RF a baudrate of 1.2K, after my boards don't communicate.

What will be the problem?


Thanks.

  • 0
    TI__Mastermind 36375 points

    Alcidia, 

    • It is most likely that the boards are too close to each other and you are jamming the LNA of the receiving board by having a too strong of a signal. This jamming issues is reduced as the data rates increase.
      • I recommend moving them at least 2 meters apart.
    • The second most common thing is the TX and RX frequencies are not close enough, this can be validated using a spectrum analyzer.
      • The RX bandwidth of the CC1110 is 58kHz, you need to have the two boards tuned to within 20kHz of each other.

    I hope this helps, if not, please post your findings and I will make further suggestions.

    Regards,
    /TA

  • 0 in reply to TA12012
    Prodigy 140 points

    I recommend moving them at least 2 meters apart

    It didn't work.

    The RX bandwidth of the CC1110 is 58kHz, you need to have the two boards tuned to within 20kHz of each other.

    Yes, and the boards work with baudrate of 2.4K... 250K, but with a baudrate of 1.2K don't work yet :(

     

     

  • 0 in reply to Alcidia Duarte
    TI__Mastermind 36375 points

    Alcidia, 

    Strange, are you using the default configuration parameters as found in SmartRF studio?

    Regards,
    /TA