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The main features of the 4-series devices are as follows: interference-free delivery of shockwaves,
interference-free control of all functions. Uninterrupted operation is not required with the use intended.
Guidelines and manufacturer's declaration – electromagnetic interference immunity
The 4-series device is intended for operation in the electromagnetic environment specified below. The
customer or user of the 4-series should ensure that it is used in such an environment.
Interference
immunity tests
IEC 60601-test
level
Compliance level Electromagnetic environment -
guidelines
Conducted RF
disturbance variables
according to IEC
61000-4-6
Radiated RF
disturbance variables
according to IEC
61000-4-3
3 V
effective value
150 kHz to 80
MHz
3 V/m
80 MHz to 2.5
GHz
3 V
effective value
150 kHz to 80 MHz
3 V/m
80 MHz to 2.5 GHz
Portable and mobile radio should not
be used any closer to the 4-series
devices, including cables, than the
recommended separation distance
calculated from the equation
applicable to the transmission
frequency.
Recommended separation
distance:
d= 1.2 √P
d= 0.35 √P for 80 MHz to 800 MHz
d= 0,7 √P for 800 MHz to 2.5 GHz
Where P is the rated power of the
transmitter in Watts (W) according to
the transmitter manufacturer and d is
the recommended separation
distance in meters (m).
According to an investigation in situ
a
,
the field strength of stationary radio
transmitters should be less than the
compliance level at all frequencies.
Interference may occur in the vicinity
of 4-series devices which is marked
with the following symbol:
NOTE 1 At 80 MHz and 800 MHz the higher frequency range is applicable.
NOTE 2 These guidelines may not be applicable in all cases. Electromagnetic propagation is affected by
absorption and reflection from structures, objects and people.
a
Theoretically, it is not possible to exactly predict the field strengths of fixed transmitters such as
base stations for radio telephones and land mobile radios, amateur radio stations, AM and FM radio and
TV broadcasting. To determine the electromagnetic environment in relation to the fixed transmitters, an
electromagnetic site survey should be considered. If the measured field strength in the location where
the 4-series device is to be used exceeds the above compliance levels, the 4-series device should be
monitored in order to ensure that it is functioning as intended. If unusual features are noticed, additional
measures may be necessary such as re-orienting or relocating the 4-series device.
b
Above the frequency range from 150 kHz to 80 MHz the field strength should be less than 3 V/m.
Recommended separation distances between portable and mobile RF telecommunications 4-
series and the 4-series device
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