User's Manual

Operator’s Manual ZM-940PA/941PA 91
Electromagnetic Immunity
ThisModelZM-940PAisintendedforuseintheelectromagneticenvironmentspeciedbelow.
The customer or the user of the ZM-940PA 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oors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% UT (>95% dip in
UT) for 0.5 cycle
40% UT (60% dip in
UT) for 5 cycles
70%UT (30% dip in
UT) for 25 cycles
<5% UT (>95% dip in
UT) for 5 s
Not applicable
—
Power frequency
(50/60Hz)
magneticeld
IEC 61000-4-8
3 A/m 3 A/m Powerfrequencymagneticelds
should be at levels characteristic
of a typical location in a
typical commercial or hospital
environment.
NOTE: UT 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elds.Electromagneticeldswitheldstrengthsabove1V/mmaycause
measurement error. Do not use electrically radiating equipment near the impedance respiration
measurements.