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12.0 Notes on EMC
Immunity Test
Voltage Dips / Dropout
IEC 61000-4-11
NOTE
U
is the mains alternating current prior to application of the test levels.
T
12.3 Guidelines and Manufacturer´s Declaration - Immunity
The ATMOS S 351 Natal is intended for use in the electromagnetic environment specifi ed below. The customer or
user of the ATMOS S 351 Natal should ensure that it is used in such an environment.
Immunity Test
Conducted RF
IEC 61000-4-6
Radiated RF
IEC 61000-4-3
IEC 60601-
Test Level
< 5 % U
T
(> 95 % Dip of the U
)
T
for 0.5 Cycle
40 % U
T
(60% Dip of the U
)
T
for 5 Cycles
70% U
T
(30 % Dip of the U
)
T
for 25 Cycles
< 5 % U
T
(>95 % Dip of the U
)
T
for 5 s
IEC 60601-
Compliance Level
Test Level
3 V
eff
3 V
150 kHz to 80 MHz
3 V/m
3 V/m
80 MHz to 2.5 GHz
Compliance Level
< 5 % U
T
(> 95 % Einbruch der U
)
T
für 0,5 Periode
40 % U
T
(60% Einbruch der U
)
T
für 5 Perioden
70% U
T
(30 % Einbruch der U
)
T
für 25 Perioden
< 5 % U
T
(>95 % Einbruch der U
)
T
für 5 s
Electromagnetic Environment -
Guidance
Portable and mobile communications
equipment should be separated from the
ATMOS S 351 Natal incl. the cables by no
less than the distances calculated/listed
below.
Recommended distances:
d = (3,5 / V1) * √(P)
d = (3,5 / E1) * √(P) 80-800 MHz
d = (7 / E1)
where „P" is the max. power in watts (W)
and D is the recommended separation
distance in meters (m).
Field strengths from fi xed transmitters, as
determined by an electromagnetic site (a)
survey, should be less than the compli-
ance level (b).
Interference may occur in the vicinity of
equipment containing following symbol.
Electromagnetic Environ-
ment - Guidance
Mains power quality should be that
of a typical commercial or hospital
environment. If the user of the
ATMOS S 351 Natal demands
continued function even in case of
interruptions of the energy supply,
it is recommended to supply the
ATMOS S 351 Natal from an
uninterruptible current supply or a
battery.
* √(P) 0,8-2,5 GHz
49
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