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CCS/CC1101: CRC Error

Gilbert
Expert 1105 points

Part Number: CC1101

Tool/software: Code Composer Studio

Hello, everyone!

   I let a custom gateway device receive packets from a lot of terminal devices by CC1101 transceiver on 433.6MHz (38.4KBaud, GFSK). After testing, I found that there were 2809 CRC error in 10000 packets.

   Anyone can tell me what lead CRC Error?

   Any suggestion for how to solve would be greatly appreciated.

   Best Regards,

   Gilbert

  • 0
    TI__Guru**** 317180 points
    CRC errors could occur when:
    - You are close to the sensitivity limit
    - Non optimal settings. Some settings could give an error floor even conducted and with margin to the sensitivity limit
    - Noise. It could be other radio activity on the air interfering and causing bit errors
    - False sync. It's a given probability that the radio will find a valid sync word in noise.
    - If the Tx and Rx side is too close the receiver could saturate and you can get bit errors

    Do you know the RSSI level you have when testing?
    Do you use the settings suggested by SmartRF Studio?