3 ms·
The ISM field strength levels here are defined in 47 Part 18.305. they are measured in an anechoic chamber and inverse square law scaled to the field strength a
by phasetransition 9y ago
The ISM field strength levels here are defined in 47 Part 18.305. they are measured in an anechoic chamber and inverse square law scaled to the field strength at the stated distance.
Source: I used to work with RF lighting devices, which need to meet the levels of 18.305(c), and were usually tested the same way in pre-compliance before final OATS testing.