Test
frequency
(MHz)
Band
a)
(MHz)
Service
a)
Modulation
b)
Maximum
power (W)
Distance
(m)
IMMUNITY
TEST
LEVEL
(V/m)
1720 1700 – 1990 GSM 1800;
CDMA 1900;
GSM 1900;
DECT;
LTE Band 1, 3,
4, 25; UMTS
Pulse
modulation
b)
217 Hz
2 0.3 28
1845
1970
2450 2400 – 2570 Bluetooth,
WLAN,
802.11 b/g/n,
RFID 2450,
LTE Band 7
Pulse
modulation
b)
217 Hz
2 0.3 28
5240 5100 – 5800 WLAN 802.11
a/n
Pulse
modulation
b)
217 Hz
0.2 0.3 9
5500
5785
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.
Field strengths from fixed RF transmitters, as determined by an electromagnetic site survey,
a
should
be less than the compliance level in each frequency range.
b
Interference may occur in the vicinity of equipment marked with the following symbol:
a
Field strengths from fixed transmitters, such as base stations for radio (mobile/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 System is used exceeds the applicable RF compliance
level above, the System should be observed to verify normal operation. If abnormal performance
is observed, additional measures may be necessary, such as re-orienting or relocating the System.
b
Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 10 V/m.
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