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Declaration – electromagnetic immunity
The 3M™ Littmann® Electronic Stethoscope Model 3200, is intended for use in the electromagnetic environment
specified 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
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 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
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
magnetic field or hospital environment.
Voltage dips, short
interruptions and
voltage variations on
power supply lines IEC
61000-4-11
< 5% UT
(>95% dip in UT) for 0.5
cycle
40% UT
(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
Not applicable