Welch Allyn REF 29400, Directions For Use Manual

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Welch Allyn OAE Hearing Screener Directions for Use 705353 Rev E
47
Electromagnetic Immunity
The REF 29400 Series OAE Hearing Screener is intended for use in the electromagnetic
environment specified below. The customer or user of the REF 29400 Series OAE Hearing
Screener 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 ±2 kV for power
supply lines Mains power quality should be that of a typical
commercial or hospital environment.
Surge IEC 61000-
4-5 ±1 kV differential
mode
±2 kV common
mode ±1 kV differential
mode
±2 kV common
mode Mains power quality should be that of a typical
commercial or hospital environment.
Voltage dips, short
interruptions, and
voltage variations
on power supply
input lines. IEC
61000-4-11 >95% dip in 0.5
cycle 60% dip in 5
cycles 30% dip for
25 cycles >95%
dip in 5 seconds >95% dip in 0.5
cycle 60% dip in 5
cycles 30% dip for
25 cycles >95%
dip in 5 seconds Mains power quality should be that of a typical
commercial or hospital environment. If the user
of the REF 29400 Series OAE Hearing Screener
requires continued operation during power mains
interruptions, it is recommended that the REF
29400 Series OAE Hearing Screener be
powered from an uninterruptible power supply or
battery.
Power frequency
(50/60Hz)
magnetic field IEC
61000-4-8 3 A/m 40A/m Power frequency magnetic fields should be at
levels characteristic of a typical location in a
typical commercial or hospital environment.