ME310G1/ME910G1/ML865G1 AT Commands Reference Guide
80617ST10991A Rev. 11 Page 522 of 1039 2021-09-23
22. rule 1: overlap between 2 adjacent states of at least 2 °C, i.e.:
thr of state(x) - thr_clr of state(x+1) >= 2
23. rule 2: every state shall have free temperature range which has no part
in any overlap range. This range should be at least 2 °C, i.e.:
thre_clr state(x+2) - thre state(x) >= 2
Rule 1 comes to ensure hysteresis in the transition between two states.
Rule 2 comes to ensure a minimum range for a stable state.
Referring to the figure below:
State 0 is Extreme low zone
State 1 is Operate low zone
State 2 is Operate normal zone
State 3 is Operate up zone
State 4 is Extreme up zone