30
Appendix
Susceptibility to electromagnetic interference
according to IEC 601-1-2
Note:
The user can experience environmental conditions in
a home different from those cited in the guidelines
concerning the electromagnetic environment without
endangering himself or herself.
The CardioMessenger is suitable for operation in the indicated electromagnetic environ-
ment. The customer and/or operator of the CardioMessenger should make sure that it is
used in an electromagnetic environment as described below.
Checking
susceptibility to
interference
Test level according
to IEC 60601-1-2
Conform-
ance level
Guidelines for the electro-
magnetic environment
Discharge of static
electricity (ESD)
according to IEC 61000-
4-2
± 6 kV contact
discharge
± 8 kV air discharge
Same as
test level
Floors should be made of
wood or cement, or have ce-
ramic tiles. When the floor
consists of a synthetic ma-
terial, the relative humidity
must be at least 30%.
Rapid transient electri-
cal disturbances/bursts
according to IEC 61000-
4-4
± 2 kV for
power cables
Same as
the test
level
The quality of the supply
voltage should correspond
to that in a typical business
and/or hospital.
Power surges
according to IEC 61000-
4-5
± 1 kV normal mode
voltage
± 2 kV common
mode voltage
Same as
the test
level
The quality of the supply
voltage should correspond
to that in a typical business
and/or hospital.
Voltage dips, brief inter-
ruptions and fluctua-
tions in the supply volt-
age
according to IEC 61000-
4-11
‹
5% U
T
for
1/2 period
(
›
95% drop)
40% U
T
for 5 periods
(60% drop)
70% U
T
for
25 periods
(30% drop)
‹
5% U
T
for 5 s
(
›
95% drop)
Same as
the test
level
The quality of the supply
voltage should correspond
to that in a typical business
and/or hospital. The Cardio-
Messenger is powered by a
battery. An interruption in
the supply voltage to the
power supply unit will not
impair the functioning of the
CardioMessenger.
Magnetic field at the
supply frequencies
(50/60 Hz)
according to IEC 61000-
4-8
3 A/m
Same as
the test
level
The magnetic field strength
should correspond to the
typical value in business
and hospital environments.
NOTE: U
T
is the AC supply voltage before applying the test level
