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Sub GHz transceiver daughter board with SPIRIT1 - Schematic Clarification

Question asked by Silas Valera on Nov 27, 2017
Latest reply on Nov 27, 2017 by Silas Valera

Hi 

I planning to use either SPIRIT1 or S2-LP for my project on WMBus. Refering to the schematic (click here to open), there are these four resistors (R6-R7 in the lower left corner) which are soldered for the selected operation frequency. These are shown to be connected between GND to GND !!  Can anyone explain how do these resistors work and affect the frequency of operation? It may be that these are placed on the PCB exactly at the position needed so that the board will operate at the selected frequency. I am not sure and it is very confusing without any information.  Would anyone please explain?

 

Really appreciate your help!!

Thanks in advance!

Silas

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