LTE and GPS external antenna nRF9160 DK

RE: LTE and GPS external antenna nRF9160 DK

Simonr — Tue, 25 Aug 2020 07:33:30 GMT

As stated in the AT+CCLK? documentation:

"The device clock updates are based on network time when available. The time can be requested using the read command, but not all networks provide the information, nor can the highest accuracy requirements be guaranteed, either." So no, this is not guaranteed to be a very accurate representation on time. This, of course, depends on your definition of accurate though.

Best regards,

Simon

RE: LTE and GPS external antenna nRF9160 DK

WassimZ98 — Mon, 24 Aug 2020 18:36:39 GMT

Thank you for the reply.

About time synchronization, if I use the command AT+CCLK i get time from LTE network. Is it a very precise time ?

RE: LTE and GPS external antenna nRF9160 DK

Simonr — Mon, 24 Aug 2020 12:43:57 GMT

The Murata MXHS83QE3000 adapter is the only option to connect external SMA antennas as far as I know, so I strongly suggest looking into whether you'll be able to get this or not.

Other options for as precise time synchronization are rather limited I believe, and you would have to get other external components to keep track of the time either way. An option that would be less accurate, but not include any further components, would be to create a similar application as the BLE timesync demo for the onboard nRF52840 in NCS, but you'd be on your own in the development process here, as our recommendation is to get your hands on the Murata adapter for the most precise solution.

Best regards,

Simon