What is the difference between "Storage Temp", "Ambient Temp" and "Operating Temp" mean?
I'm not sure there is a universally accepted definition, especially considering the wide range of possible equipment etc. There are probably military standards that nail it down in that domain.
Without further information, I would interpret &quot;operating temperature&quot; as ambient temperature during operation and storage temperature as ambient temperature during storage (not powered).
If the unit is not powered, typically the internal temperature would be the same as the ambient. When powered, the internal temperature would typically be higher and more variable (some components heat more than others).
There's a lot more nuance possible, because things like lifetime can vary strongly with temperature so storing a device at the maximum storage temperature may greatly shorten its lifetime.