Specifications
IQmark Digital ECG Operation Manual
43
Guidance and manufacturer’s declaration – electromagnetic immunity
The IQmark Digital ECG is intended for use in the electromagnetic environment specified below.
The customer or the user of the IQmark Digital ECG should assure that it is used in such an
environment.
Immunity test
IEC 60601 test
level
Compliance
level
Electromagnetic environment – guidance
Conducted RF
IEC 61000-4-6
Radiated RF
IEC 61000-4-3
3 Vrms
150 kHz to 80
MHz
3 V/m
80 MHz to 2.5
GHz
3 Vrms
3 V/m
Portable and mobile RF Communications equipment
should be used no closer to any part of the IQmark
Digital ECG, including cables, than the
recommended separation distance calculated from
the equation applicable to the frequency of the
transmitter.
Recommended separation distance
d = 1.2 √ P
d = 1.2 √ P 80 MHz to 800 MHz
d = 1.2 √ 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 the 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:
NOTE 1- -At 80 MHz and 800 MHz, the higher frequency range applies.
NOTE 2 - These guidelines may not apply in all situations. Electromagnetic propagation is affected by
absorption and reflection from structures, objects and people.
a
Field strengths from fixed transmitters, such as base stations for radio (cellular/cordless) telephones and
land mobile radios, amateur radio, AM and FM radio broadcast and TV broadcast cannot be predicted
theoretically with accuracy. To assess the electromagnetic environment due to fixed RF transmitters, an
electromagnetic site survey should be considered. If the measured field strength in the location in which
the IQmark Digital ECG is used exceeds the applicable RF Compliance level above, the IQmark Digital ECG
should be observed to verify normal operation. If abnormal performance is observed, additional measures
may be necessary, such as re-orientating or relocating the IQmark Digital ECG.
b
Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.
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