Recommended separation distances between
portable and mobile RF communications equipment and the TH2xyz series
The TH2xyz series is intended for use in an electromagnetic environment (for home healthcare) in which
radiated RF disturbances are controlled. The customer or the user of the TH2xyz series can help prevent
electromagnetic interference by maintaining a minimum distance between portable and mobile RF
communications equipment (transmitters) and the TH2xyz series as recommended below, according to
the maximum output power of the communications equipment.
Rated maximum output
power of transmitter
W
Separation distance according to frequency of transmitter
m
150 kHz to 80 MHz
d =
1,2
80 MHz to 800 MHz
d =
1,2
800 MHz to 2,7 GHz
d =
2,3
0,01
N/A 0,12 0,23
0,1
N/A
0,38
0,73
1
N/A
1,2
2,3
10
N/A
3,8
7,3
100
N/A
12
23
For transmitters rated at a maximum output power not listed above, the recommended separation
distance
d
in meters (m) can be estimated using the equation applicable to the frequency of the
transmitter, where
P
is the maximum output power rating of the transmitter in watts (W) according to the
transmitter manufacturer.
NOTE 1 At 80 MHz and 800 MHz, the separation distance for the higher frequency range applies.
NOTE 2 These guidelines may not apply in all situations. Electromagnetic propagation is affected by
absorption and reflection from structures, objects and people.
Manufacturer’s declaration-electromagnetic immunity
Test specifications for ENCLOSURE PORT IMMUNITY to RF wireless communications equipment
The TH2xyz series is intended for use in the electromagnetic environment (for home healthcare) specified
below.The customer or the user of the TH2xyz series should assure that it is used in such an environment.
Test
frequency
(MHz)
Band
a)
(MHz)
Service
a)
Modulation
b)
Maximum
power
(W)
Distance
(m)
IMMUNITY
TEST LEVEL
(V/m)
Compliance
LEVEL
(V/m)
(for home
healthcare)
385
380
–
390 TETRA 400
Pulse
modulation b)
18 Hz
1,8 0,3 27
27
450
430
–
470
GMRS 460,
FRS 460
FM c)
±
5 kHz
deviation
1 kHz sine
2 0,3 28 28
710
704
–
787
LTE Band
13,17
Pulse
modulation b)
217 Hz
0,2 0,3 9
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 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 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 28
5240
5100
–
5800
WLAN
802.11
a/n
Pulse
modulation b)
217 Hz
0,2 0,3 9
9
5500
5785
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.
