NRF9160 Temperature and Voltage Sampling Rate

[Thomas]

Hi,

The XTEMP, XPOFWARN and XVBATLOWLVL commands all allow you to set thresholds for temperature/voltage at which the modem sends a notification. When is the voltage/temperature sampled for these? Does it sample them periodically, if so how frequent;y? Does it perhaps use a voltage comparator instead to give instant feedback the moment temperature/voltage reaches a certain level?

Do the warnings get sent in AT+CFUN=0 or AT+CFUN=4 modes?

Kind regards,

Thomas

[helsing]

Hi Thomas,

Here are comments from our team:

For XVBATLOWLVL the voltage is the latest voltage measured automatically during wakeup or reception. The measured value is reliable.

XVBATLOWLVL and XTEMP: modem reads sensors periodically in connected mode, default period is 60 seconds. If temperature or voltage gets close to set threshold shorter period is used.

XPOFWARN based on voltage level detection without any delay. When this warning has happened once, it need to be enabled again by sending AT%XPOFWARN=1,<voltage>.

I hope this helps. Please let me know if you need any more information.

Best regards,

Håkon

[Thomas]

Thank you for the help Håkon