Norco Eco-Stim NC89481, Instruction Manual, Page: 20 / 23

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 [Vi] V/m.
Test specifications for ENCLOSURE PORT IMMUNITY
to RF wireless communications equipment (Table 9)
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)
18Hz
1.8 0.3 27
450
430-
470
GMRS 460,
FRS 460
FM
c)
±5kHz
deviation
1kHz sine
2 0.3 28
710
704-
787
LTE Band
13,17
Pulse
modulation
b)
217Hz
0.2 0.3 9 745
780
810
800-
960
GSM800/900,
TETRA 800,
iDEN 820,
CDMA 850,
LTE Band 5
Pulse
modulation
b)
18Hz
2 0.3 28 870
930
1720
1700-
1990
GSM1800;
CDMA 1900;
GSM 1900;
DECT; LTE
Band 1, 3, 4,
25; UMTS
Pulse
modulation
b)
217Hz
2 0.3 28
1845
1970
2450
2400-
2570
Bluetooth,
WLAN,
802.11 b/g/n,
RFID 2450,
LTE Band 7
Pulse
modulation
b)
217Hz
2 0.3 28
5240
5100-
5800
WLAN
802.11
a/n
Pulse
modulation b)
217Hz
0.2 0.3 9 5500
5785
NOTE:
If it is 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 18Hz may
be used because it does not represents actual modulation.
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