13
Immunity
test
IEC 60601
test level
Compliance
level
Electromagnetic
environment - guidance
Voltage
dips, short
interruptions
and voltage
variations on
power supply
input lines
< 5 %
U
T
(> 95 % dip in
U
T
)
for 0.5 cycle
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 sec.
Not
applicable
Mains power quality should be
that of a typical commercial
or hospital environment. If
the user of the HearCheck
Screener requires continued
operation during power
mains interruptions, it is
recommended that the
HearCheck Screener is
powered from an
uninterruptible power supply
or a battery.
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
ist the a.c. mains voltage prior to application of the test level.
18
Summary of Contents for HearCheck Screener
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