Siemens HearCheck Screener User Manual page 18

13
Immunity
test
Voltage
dips, short
interruptions
and voltage
variations on
power supply
input lines
Power
frequency
(50/60 Hz)
magnetic field
IEC 61000-4-8
Note: U ist the a.c. mains voltage prior to application of the test level.
T
18
IEC 60601
test level
< 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.
3 A/m
Compliance Electromagnetic
level environment - guidance
Not Mains power quality should be
applicable 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.
3 A/m Power frequency magnetic
fields should be at levels
characteristic of a typical
location in a typical
commercial or hospital
environment.