39
Appendix
Test specifications for enclosure port immunity to RF wireless communications
equipment.
Test frequency
(MHz)
Modulation IMMUNITY
TEST LEVEL
(V/m)
385
Pulse modulation 18 Hz
27
450
FM
±
5 kHz deviation 1kHz sine
28
710
Pulse modulation 217 Hz
9
745
780
810
Pulse modulation 18 Hz
28
870
930
1720
Pulse modulation 217 Hz
28
1845
1970
2450
Pulse modulation 217 Hz
28
5240
Pulse modulation 217 Hz
9
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). The carrier shall be modulated using a 50% duty cycle square wave signal.
b). 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.
