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CC1101 Sensitivity Testing in MSK Mode
From looking at datasheet it appears I cannot duplicate the CC1101 MSK modulation exactly using a signal generator. Is that opinion correct?
How does TI suggest checking the sensitivity in MSK mode using a signal generator? By sending raw data not packets?
Your opinion is correct..
When MSK modulation is enabled, the DEVIATION_M field sets the fraction of symbol period used for phase change.
DEVIATION_M = 0 means that the phase is changed within 1/8 of a symbol.
DEVIATION_M = 7 means that the the whole symbol period is used to change phase.
Higher data rates need faster phase changes.
CC1101 configured for MSK modulation will not receive a 2-FSK modulated signal from an arbitrary transmitter (incl CC1101). Reason being that the CC1101 MSK is inverted.
You should consider using 2-GFSK with a modulation index = 0.5 instead of the CC1101 MSK option.
Thank you for the information.
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