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IWR6843: the value bounds for rxgain

Part Number: IWR6843


I am using IWR6843AOP ES2.0, and noticed that the default configuration files have wide range of values for rxgain in the profileCfg field. In particular, a value of 30 dB is used for the area scanner lab while a value of 158dB (I think it's dB but not sure about that!) is used in the Out Of the Box configuration generated using the demo visualizer tool.

I found the document "structrl_profile_cfg__t.html" in the mmwavelink doxygen files, which states a range from 30dB to 48dB for IWR6843 ES 2.0 and was wondering if there is any further explanation about the accepted range of values for rxgain and also will choosing a higher value for rxgain (for example 158 as in the OOB) lead to higher noise in the system?

Thank you,