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CCS/LAUNCHXL-CC1352R1: How to correctly set LBT

Part Number: LAUNCHXL-CC1352R1

Tool/software: Code Composer Studio

Hey guys,

it looks like AB is out of office and time is a crucial factor here since certification starts next week, hence I am reposting this question to get it assigned to someone else.

According to the certification lab for the CC1352R1 the LBT limit it has to be at least -90.6dBm, hence I want to set it to -92dBm. The comment above the below function says: RSSI threshold for CCA, expressed as a signed int with range -127 to 127?

ApiMac_mlmeSetReqUint8(ApiMac_attribute_rssiThreshold, 35);

Using the get-function, the value for the rssiThreshold is 173. The value 255 could be 0dBm, then 173 is -82dBm, which sounds logical. Since I need -92dBm I choose 163, is this the correct value to get -92dBm?!? I do not have the equipment to precisely measure the LBT threshold in practice. I wan to set the value manually, since I dont think, that the stack can handle the limit correctly, because the stack does not know the external antenna gain.

best wishes

Slev1n