41
NOTE 1 At 80 MHz and 800 MHz, the higher frequency range applies.
NOTE 2 These guidelines may not apply in all situations. Electromagnetic propagation is affected by ab-
sorption and reflection from structures, objects and people.
a. Field strengths from fixed transmitters, such as base stations for radio (cellular/cordless) telephones
and land mobile radios, amateur radio, AM and FM radio broadcast and TV broadcast cannot be predicted
theoretically with accuracy. To assess the electromagnetic environment due to fixed RF transmitters, an
electromagnetic site survey should be considered. If the measured field strength in the location in which
the device is used exceeds the applicable RF compliance level above, the device should be observed to
verify normal operation. If abnormal performance is observed, additional measures may be necessary, such
as reorienting or relocating the device.
b. Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m
Test specifications for enclosure port immunity to RF wireless communications equipment.
Test frequency (MHz)
385
450
710
745
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 anten-
na 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.
Modulation
Pulse modulation 18 Hz
FM ± 5 kHz deviation 1kHz sine
Pulse modulation 217 Hz
Pulse modulation 18 Hz
Pulse modulation 217 Hz
Pulse modulation 217 Hz
Pulse modulation 217 Hz
ENGLISH
IMMUNITY TEST LEVEL (V/m)
27
28
9
28
28
28
9