NRF9160 LTE RX/TX Functionality test - XREFTEST

RE: NRF9160 LTE RX/TX Functionality test - XREFTEST

ketiljo — Thu, 06 Aug 2020 11:53:49 GMT

Hi Aswin

Ok, just for functionally verification, it should be ok. You will not be able to communicate between the modules, but as that's not the intention here, it's fine.

cheers,

Keitl

RE: NRF9160 LTE RX/TX Functionality test - XREFTEST

Aswin P V — Wed, 05 Aug 2020 14:23:45 GMT

Thanks for the reply. Our tests are meant for production test only to verify the functionality. We tried the below.

In one of the board , we enabled LTE TX at 1950.0 MHz ( Band 1 , +17dBm ) and in other board we enabled LTE RX at 1950MHz ( Band 2 , -25dBm RX signal power at antenna ).

When TX not enabled , the received signal strength at the LTE RX board were -75dBm and when transmittor enabled it changed to -26dBm. We are observing some significant change in the received signal strength. And we would like to know whether this kind of testing is okay or not to verify the functionality ? Please advise

RE: NRF9160 LTE RX/TX Functionality test - XREFTEST

ketiljo — Wed, 05 Aug 2020 14:10:20 GMT

I'm afraid that's not possible. The LTE RX/TX test is meant to be used for regulatory testing together with the appropriate test equipment.