20
Magnetic field at the
power frequency
(50/60 Hz)
according to IEC 61000-4-8
3 A/m
3 A/m
Magnetic fields at the mains frequency should
match the
typical values found in business or
hospital environments
.
NOTE V
T
is the mains AC voltage before application of the test level.
Guidelines and manufacturer's declaration – electromagnetic stability
Model MD 10544 is designed for operation in an electromagnetic environment as described below: The customer
or user of Model MD 10544 should ensure that it is operated in such an environment.
Interference immunity
tests
IEC 60601
test level
Pass level
Electromagnetic environment – guidelines
Portable and mobile should not be used closer to
the [appliance or system] than the protection
distance calculated using the equation applicable
for the emission frequency.
Recommended protection distance:
Conducted HF
interference
according to IEC 61000-4-
6
3 V
rms
150 kHz to 80 MHz
Not applicable
Not applicable
Radiated
HF interference
according to IEC 61000-4-
3
3 V/m
80 MHz to 2.5 GHz
3 V/m
d = 1.2
80 MHz to 800 MHz
d = 2.3
800 MHz to 2.5 GHz
where P is the transmitter's nominal output in Watt
(W) according to the information provided by the
manufacturer of the transmitter and
d is the recommended protection distance in
metres (m).
The field strength at all frequencies of stationary
transmitters is, according to an on-site inspection
a
,
below the pass level
b
.
Interference may be experienced in the vicinity of
appliances marked with the following symbol.
NOTE 1 The higher value applies at 80 MHz and 800 MHz.
NOTE 2 These guidelines may not apply to all situations. The radiation of electromagnetic waves is influenced
by absorption and reflection from buildings, objects and people.
a
The field strength of stationary transmitters, such as base stations for radio telephones and terrestrial mobile services,
amateur stations, AM and FM radio and television transmitters cannot be determined precisely in theoretical terms. In order to
determine the electromagnetic environment resulting from stationary HF transmitters we recommend an on-site inspection
. If the field determined at the location of Model MD 10544 exceeds the pass level stated above
the Model MD 10544 must be checked for normal operation at each point of use.
If unusual performance characteristics are observed, it may be necessary to undertake additional measures such as
realigning or moving Model MD 10544.
b
Not applicable in the frequency range from 150 kHz to 80 MHz.
