I am trying to limit the ME output power in GSM/EDGE bands (850/900 MHz) from the default 2W (class 4) to one class lower - 0.8W (class 5). There is a command AT+CPWC (Power Class) but I am having problem with it. In the documentation it states that “Module must be rebooted for the selection to be effective” but after restarting/rebooting module the old setting is active.
The command flow is like this (example):
< changing the class from 4 to 5 >:
< check the class >
< restart the module >
+CPWC: 4,4,0,1,1,1,1,1,2 ← the old default setting (class 4), the new setting (class 5) is lost
Is there a way to retain the setting? Or any other way to change the class temporarily or permanently to limit the output power to 0.8W?
I have also trouble understanding the description of the CPWC command in the guide, like what are the parameters <curr_classn>, <def_classn> and how to set them.
Any help is appreciated,