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  • Case ID: 318833
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nRF9160: GNSS sample-code: TTFF test mode

ali123

I don't quite understand the difference between periodic mode and TTFF test mode when using GNSS sample code for nRF9160. I have noticed in measurements that the average current consumed is higher for the TTFF test mode. What causes this? 

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    Hello,

    The GNSS sample used in the periodic mode would configures the GNSS to operate in periodic mode, meaning it will acquire fixes periodically and the application will just print the data on the terminal that GNSS outputs.

    However, in the TTFF test mode, the GNSS in run in single fix mode. For each fix, the application will calculate the TTFF time. In the TTFF test mode, it's also possible to configure the sample to perform GNSS cold starts.

    The power consumption should not be that different. However, how periodically you are getting fixes could have an impact.

    /BR, Naeem

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