Calibration timing; when after power up does it start and how long does it last?

First time Live Cal runs when it does not see any Live Cal Data in flash. For the first time in production line when Live Cal is run, it goes through all channels, and If you Cal in a shield box the time is typically around 10 seconds. In a noisy environment this can be longer, however the accuracy of the Cal is unaffected.  One should issue the Live Cal Status command and check for First Time Cal done status before proceeding with additional commands. When in the field, if temp changes enough and the module is seeing that temp/channel combo for the first time, then Live Cal kicks in and the algorithm runs in the background in short durations. It does that so there is no disruption to connectivity.

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