F
EN-66
english
General provisions
EN-67
english
F
General provisions
Guidance and manufacturer’s declaration - electromagnetic immunity
Immunity test IEC 60601
test level
Compliance
level
Electromagnetic environment - guidance
Conducted RF
IEC 61000-4-6
3 Vrms 150
kHz to 80
MHz
3 V
Portable and mobile RF radio equipment should be used no closer to any part of the
device, including cables, than the recommended separation distance calculated from the
equation applicable to the frequency of the transmitter.
Recommended separation distance:
d=[3.5/V1]√P
d=[3.5/E1]√P 80 MHz to 800 MHz
d=[7/E1]√P 800 MHz to 2.5 GHz
Radiated RF IEC
61000-4-3
3 V/m 80
MHz to 2.5
GHz
3 V/m
where P is the maximum output power rating of the transmitter in watts (W) according
to the transmitter manufacturer and d is the recommended separation distance in metres
(m).b Field strengths from fixed RF transmitters, as determined by an electromagnetic site
survey,c should be less than the compliance level in each frequency range.d
Interference may occur in the vicinity of equipment marked with the following symbol:
NOTE1: At 80 MHz and 800 MHz, the higher frequency range applies.
NOTE2: These guidelines may not apply in all situations. Electromagnetic propagation is affected by absorption and reflection from struc-
tures, objects and people.
a: Field strength from fixed transmitters, such as base stations for radio (cellular/cordless) telephones and land mobile radios, amateur
radio, AM and FM radio stations and TV stations 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 3 V/m.
Recommended separation distances between portable and mobile RF communications equipment and the device.
The device is intended for use in an electromagnetic environment in which radiated RF disturbances are controlled. The
customer or the user of the device can help prevent electromagnetic interference by maintaining a minimum distance
between portable and mobile RF communications equipment (transmitters) and the device 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=[3.5/V1]√P
80 MHz to 800 MHz
d=[3.5/E1]√P
800 MHz to 2.5 GHz
d=[7/E1]√P
0.01
0.12
0.23
0.1
0.37
0.73
1
1,2
2.3
10
3.7
7.3
100
11.7
23.3
For transmitters rated at a maximum output power not listed above, the recommended separation distance d in metres
(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.
NOTE1: At 80 MHz and 800 MHz, the higher frequency range applies.
NOTE2 These guidelines may not apply in all situations. Electromagnetic propagation is affected by absorption and
reflection from structures, objects and people.
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