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N-550B
Table 16: Electromagnetic Immunity
The N-550B is intended for use in the electromagnetic environment specified
below. The customer or user of the N-550B should assure that it is used in such an
environment.
IEC 60601
Immunity Test
Test Level
Surge
±1 kV
differential
IEC 61000-4-5
mode
±2 kV common
mode
Voltage dips, short
<5% U
interruptions and
dip in U
voltage variations
0.5 cycle
on power supply
input lines
40% U
dip in U
IEC 61000-4-11
cycles
70% U
dip in U
25 cycles
<5% U
dip in U
seconds
Power frequency
3 A/m
(50/60 Hz)
magnetic field
IEC 61000-4-8
NOTE: U
is the AC mains voltage prior to application of the test level.
T
Compliance
Level
Complies
(95%
Complies
T
) for
T
(60%
Complies
T
) for 5
T
(30%
Complies
T
) for
T
(>95%
Complies
T
) for 5
T
Complies
Specifications
Electromagnetic
Environment —
Guidance
Mains power quality
should be that of a
typical commercial or
hospital environment.
Mains power quality
should be that of a
typical commercial or
hospital environment. If
the user of theN-550B
requires continued
operation during power
mains interruptions, it is
recommended that the
N-550B be powered
from an uninterruptible
power supply or battery.
Power frequency
magnetic fields should
be at levels
characteristic of a
typical location in a
typical commercial or
hospital environment.
89
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