Guidance and manufacturer's declaration - electromagnetic immunity
The Device is intended for use in the electromagnetic environment specified below. The user of the Device should assure that it is used in such an environment.
Test
Radiated RF
frequency
IEC61000-4-3
(MHz)
(Test
specifications
385
for
ENCLOSURE
PORT
450
IMMUNITY to
RF wireless
710
communications
745
equipment)
780
810
870
930
1720
1845
1970
2450
5240
5500
5785
NOTE If necessary to achieve the IMMUNITY TEST LEVEL, the distance between the transmitting antenna and the ME EQUIPMENT or ME SYSTEM may be reduced to 1 m. The 1 m test distance is
permitted by IEC 61000-4-3.
a) For some services, only the uplink frequencies are included.
b) The carrier shall be modulated using a 50 % duty cycle square wave signal.
c) As an alternative to FM modulation, 50 % pulse modulation at 18 Hz may be used because while it does not represent actual modulation, it would be worst case.
The MANUFACTURER should consider reducing the minimum separation distance, based on RISK MANAGEMENT, and using higher IMMUNITY TEST LEVELS that are appropriate for the reduced minimum
separation distance. Minimum separation distances for higher IMMUNITY TEST LEVELS shall be calculated using the following equation:
Where P is the maximum power in W, d is the minimum separation distance in m, and E is the IMMUNITY TEST LEVEL in V/m.