12 EMC
900-400_IFU_V1.0.0.6.17.9_20140-S2-20130604-EN
Operating Manual ARC 400
137
Immunity to electromagnetic interference (IEC 60601-1-2, Table 204)
The ARC 400 is intended for operation in an electromagnetic environment as described below. The customer or
user of the ARC 400 should ensure that it is operated in such an environment.
Interference immunity
test
IEC 60601 test
level
Conformity level
Electromagnetic environment guidelines
Conducted HF interference
according to
IEC 61000-4-6
3 Vrms
150 kHz to
80 MHz
10 V
Portable and mobile wireless devices should
not be used inside the recommended
protective distance from the ARC 400 and its
cables, as calculated using the equation for
the relevant transmission frequency.
Recommended protective distance:
d = 0.35 × √P
d = 0.35 × √P for 80 MHz to 800 GHz
d = 0.75 × √P for 80 MHz to 2.5 GHz
where P is the rated transmitter output power
in watts (W) as specified by the transmitter
manufacturer and d is the recommended
protective distance in meters (m).
The field strength of stationary transmitters
as determined by on-site measurements
a
should be lower than the compliance level
b
at
all frequencies.
Interference is possible in the vicinity of
devices that bear the following symbol:
Radiated HF interference
according to
IEC 61000-4-3
3 V/m
80 MHz to
2.5 GHz
10 V/m
Note 1
The higher frequency range applies in case of 80 MHz and 800 MHz.
Note 2
These guidelines may not be applicable in all cases. The propagation of electromagnetic waves
is influenced by absorption and reflection by buildings, objects and people.
a
Field strengths from stationary transmitters, such as base stations for radio telephones, land
mobile radios, amateur radio, AM and FM radio broadcasting and TV broadcasting, cannot be
predicted accurately based on theoretical considerations. A survey of the electromagnetic
conditions at the site should be performed to determine the electromagnetic environment
resulting from stationary transmitters. If the measured field strength at the location where the
ARC 400 is used exceeds the stated compliance level, the ARC 400 should be monitored to
verify that it operates correctly. Additional measures, such as altering the orientation or location of
the ARC 400, may be necessary if abnormal operation is observed.
b
The field strength should be lower than 10 V/m over the frequency range of 150 kHz to 80 MHz.
