C-3 
Voltage dips, 
short 
interruptions and 
voltage variations 
on power supply 
input lines 
IEC 61000-4-11 
<5 % U
T
 (>95 % dip 
in U
T
) for 0.5 cycle 
 
40 % U
T
 (60 % dip in 
U
T
) for 5 cycles 
 
70 % U
T
 (30 % dip in 
U
T
) for 25 cycles 
 
<5 % U
T
 (>95 % dip 
in U
T
) for 5 s 
<5 % U
T
 (>95 % dip 
in U
T
) for 0.5 cycle 
 
40 % U
T
 (60 % dip in 
U
T
) for 5 cycles   
 
70 % U
T
 (30 % dip in 
U
T
) for 25 cycles 
 
<5 % U
T
 (>95 % dip 
in U
T
) for 5 s 
Mains power quality should 
be that of a typical 
commercial or hospital 
environment. If the user of 
the equipment requires 
continued operation during 
power mains interruptions, it 
is recommended that the 
equipment be powered from 
an uninterruptible power 
supply (UPS). 
Power frequency 
(50/60 HZ) 
magnetic field 
IEC 61000-4-8 
3 A/m  3 A/m  Power frequency magnetic 
fields should be at levels 
characteristic of a typical 
location in a typical 
commercial or hospital 
environment. 
Note: U
T
 is the AC mains voltage prior to application of the test level. 
Guidance and Declaration - Electromagnetic Immunity 
The anesthesia machine is suitable for use in the specified electromagnetic environment. The 
customer or the user of the anesthesia machine should assure that it is used in such an environment 
as described below. 
Immunity test  IEC60601 
test level 
Compliance 
level 
Electromagnetic environment - guidance 
Conduced RF 
IEC61000-4-6 
3 Vrms 
150 kHz to 80 
MHz  
Outside ISM 
bands
a
 
 
10 Vrms 
150 kHz to 80 
MHz  
In ISM bands
a
 
3 Vrms
(V1) 
 
 
 
 
10Vrms
(V2) 
Portable and mobile RF communications 
equipment should be used no closer to any part of 
the system, including cables, than the 
recommended separation distance calculated from 
the equation appropriate for the frequency of the 
transmitter. Recommended separation distances: 
P
V
d
⎥
⎦
⎤
⎢
⎣
⎡
=
1
5.3
 
P
V
d
⎥
⎦
⎤
⎢
⎣
⎡
=
2
12