How do I know what receive bandwidth has been configured on the Wireless Gecko (EFR32)?
The selected receive bandwidth in the EFR32 radio configurator (also referred to as IF bandwidth or channel bandwidth) depends on many input parameters.
Primarily the bandwidth is derived from the modulation format and the XO accuracy parameters at the Tx and Rx sides.
There is also an option to bypass the calculation and set the bandwidth explicitly in the advanced section.
If this latter option is not used it is a rather useful information to know what the bandwidth has been set to. You can extract this information from a log file that gets updated every time generation is run. At the preview section select the efr32_configurator_log.txt file that in turn will appear in the window below. Somewhere in the log file you will find the bandwidth the receiver has been configured to (as well as the IF frequency that is also an important piece of information especially when image rejection is to be tested.)
Knowledge Base Articles
Could you please provide the information how the IF BW is calculated from the RF frequency and the Xtal tolerance.