What is the correlation between tx power level and transmit dbm?

Hi Nicolas,

The step is approximately 1dB at the higher powers (0 to ~5) then will go down to about 0.5dB for the lower powers. The 0 to 15 scale is given to give you an idea that you are decreasing in power as you increase the number from 0 to 15. Most of the time you will want to be at maximum power. That is a setting of 0. You may have an require to lower the power if you have a high dBi antenna or are not meeting regulatory requirements.

The CC3200 launhcpad defaults to the output connected to the onboard chip antenna. you can move th zero ohm resistor in the path to be the U.FL connector where you can then connect this path to your test equipment. Then you can use a Spectrum Analyzer to measure the power vs. setting vs. modulation.

Thanks,
Riz

Thank you for the response. Is there a measurement for level 0 then that can give me the range for each of the steps. Knowing the steps only helps if I know the base

Hi Nicolas,

The max power is modulation dependent. The information can be found on our data sheet. See table 4.8 of the data sheet. For example if using 1DSSS the output power would be 18dBm for setting 0.

Thanks,
Riz