User's Manual

96 Operator’s Manual ZM-520PA/521PA/530PA/531PA
Electromagnetic Immunity
This Model ZM-520PA/530PA is intended for use in the electromagnetic environment specified
below. The customer or the user of the ZM-520PA/530PA should assure that it is used in such an
environment.
Immunity test
IEC 60601 test
level
Compliance
level
Electromagnetic
environment - guidance
Electrostatic
discharge (ESD)
IEC 61000-4-2
±6 kV contact
±8 kV air
±6 kV contact
±8 kV air
Floors should be wood, concrete
or ceramic tile. If floors are
covered with synthetic material,
the relative humidity should be
at least 30%.
Electrical fast
transient/burst
IEC 61000-4-4
±2 kV for power
supply lines
±1 kV for input/
output lines
Not applicable
—
Surge
IEC 61000-4-5
±1 kV differential
mode
±2 kV common mode
Not applicable
—
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 cycles
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
Not applicable
—
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.
Avoiding Electromagnetic Interference (Impedance Respiration)
Impedance respiration measurement is very sensitive and affected by electromagnetic
interference. Technological limitations do not allow immunity levels higher than 1 V/m for
radiated RF electromagnetic fields. Electromagnetic fields with field strengths above 1 V/m
may cause measurement error. Do not use electrically radiating equipment near the impedance
respiration measurements.
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