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CC1121: Manual Frequency Calibration of FREQOFF Register

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Part Number:CC1121

Hello,

Has anyone created a Excel spreadsheet or other to facilitate calculating FREQOFF?

Or, created a simplified formula to compute the value required from the offset required?

433.920000MHz vs 433.917597MHz  (-2.403KHz -5.538 PPM)

I am attempting to utilize a CC1121 EVM as a RF Generator to measure sensitivity and want to zero out the small <10PPM crystal error.

Very simple to measure that with a SpecA and I want to manually program the FREQOFF registers to compensate.

(Note this is NOT for automatic Hz error correction.)

--

Jay Zebryk


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