User & Service Manual
Natus Quantum Amplifier
15
Table 4 - 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
TETRA 400
Pulse
modulation
b)
18 Hz
1,8
0,3
27
450
430 – 470
GMRS 460,
FRS 460
FM
c)
± 5 kHz deviation
1 kHz sine
2
0,3
28
710
704 – 787
LTE Band 13, 17
Pulse
modulation
b)
217 Hz
0,2
0,3
9
745
780
810
800 – 960
GSM 800/900,
TETRA 800, iDEN
820, CDMA
850,LTE Band 5
Pulse
modulation
b)
18 Hz
2
0,3
28
870
930
1,720
1,700 – 1,990
GSM 1800;
CDMA 1900;
GSM 1900;
DECT; LTE Band
1, 3, 4, 25;
UMTS
Pulse
modulation
b)
217 Hz
2
0,3
28
1,845
1,970
2,450
2,400 – 2,570
Bluetooth,
WLAN, 802.11
b/g/n, RFID
2450, LTE Band
7
Pulse
modulation
b)
217 Hz
2
0,3
28
5,240
5,100 – 5,800
WLAN 802.11
a/n
Pulse
modulation
b)
217 Hz
0,2
0,3
9
5,500
5,785
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.
