User's Manual

51
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)
Band
a
MHz
Service
a
Modulation
b
Maximum
power (W)
Distance
(m)
Immunity
test level
(V/m)
385
380-390
TETRA400
Pulse
modulation
b
18 Hz
1.8
0.3
27
450
430-470
GMRS460,
FRS460
FM
c
±5kHz
deviation 1
kHz sine
2
0.3
28
710
704 -787
LTE band
13,17
Pulse
modulation
b
0.2
0.3
9
Test specifications for enclosure port immunity to RF wireless communications equipment
745
217 Hz
780
810
800-960
GSM 800/900, TETRA800, i
DEN 820, CDMA 850, LTE
Band 5
Pulse modulation
b
18 Hz
2
0.3
28
870
930
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
970
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 percent duty cycle square wave signal.
c
As an alternative to FM modulation, 50 percent pulse modulation at 18 Hz may be used because
while it does not represent actual modulation, it would be worst case.
WARNING Portable RF communications equipment (including peripherals such as
antenna cables and external antennas) should be used no closer than 30 cm (12
inches) to any part of the device, including cables specified by the manufacturer.
Otherwise, degradation of the performance of this equipment could result.
The minimum separation distance for higher immunity test levels shall be calculated
using the followin equation: , where P is the maximum power in watts
(W),d is the minimum separation distance in meters [m), and Fis the immunity test level
in V/m.
Please visit www.miis.com.tw for more information.