Specifications

DL900 Holter Monitor
33
Electromagnetic Emissions
Emissions
test
Compliance
Electromagnetic
environment – guidance
RF emissions
CISPR 11
Group 1 The DL900 uses RF energy only for its
internal function. Therefore, its RF
emissions are very low and are not likely
to cause any interference in nearby
electronic equipment.
RF emissions
CISPR 11
Class B The DL900 is suitable for use in all
establishments, including domestic
establishments and those directly
connected to the public low-voltage
power supply network that supplies
buildings used for domestic purposes.
Electromagnetic Immunity
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%.
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.
DL900 Holter Monitor
34
Immunity
Test
IEC 60601
test level
Compli
-
ance
level
Electromagnetic
environment - guidance
Portable and mobile RF
communications equipment
should be used no closer to any
part of the unit, including cables,
than the recommended
separation distance calculated
from the equation applicable to
the frequency of the transmitter.
Recommended Separation
Distance:
Conducted RF 3 Vrms 3 V
d = 1.2 √ P
IEC 61000-4-6 150 kHz to
80 MHz
Radiated RF 3 V/m 3 V/m
d = 1.2 √ P 80 MHz to 800 MHz
IEC 61000-4-3 80 MHz to
2.5 GHz
d = 2.3 √ P 800 MHz to 2.5 GHz
where P is the maximum output
power rating of the transmitter in
watts (W) according to the
transmitter manufacturer and d is
the recommended separation
distance in meters (m).
Field strengths from fixed RF
transmitters, as determined by
an electromagnetic site survey
a
,
should be less than the
compliance level in each
frequency range
b
.
Interference may occur in the
vicinity of equipment marked with
the following symbol: