3M Littmann 3200 Manual page 21

Declaration – electromagnetic immunity
The 3M™ Littmann® Electronic Stethoscope Model 3200, is intended for use in the electromagnetic environment
specifi ed below. The customer or the user of Model 3200 should assure that it is used in such an environment.
Immunity test IEC 60601 test level
Electrostatic discharge ± 6 kV contact
(ESD) IEC 61000-4-2 ± 8 kV air
Electrical fast transient/ ± 2 kV for supply lines
burst IEC 61000-4-4 ± 1 kV for input/output lines
Surge IEC 61000-4-5 ± 1 kV differential mode
± 2 kV common mode
Power frequency (50/60 3 A/m
Hz) magnetic fi eld IEC
61000-4-8
Voltage dips, short < 5% UT
interruptions and (>95% dip in UT) for 0.5
voltage variations on cycle
power supply lines IEC 40% UT
61000-4-11 (60% dip in UT) for 5 cycle
70% UT
(30% dip in UT) for 25 cycle
< 5% UT
(>95% dip in UT) for 5 sec
Compliance level Electromagnetic environment
–guidance
± 6 kV contact Floors should be wood, concrete or
± 8 kV air ceramic tile. If fl oors are covered
with synthetic material, the relative
humidity should be at least 30%.
Not applicable
Not applicable
3 A/m Power frequency magnetic fi elds
should be at levels characteristic of a
typical location in a typical commercial
magnetic fi eld or hospital environment.
Not applicable
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