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Guidance and manufacturer's declaration - electromagnetic immunity
The HVO-4000MT is intended for use in the electromagnetic environment specified below. The customer or
the user of the HVO-4000MT should assure that it is used in such as environment.
IEC 60601
Immunity test
test level
Conducted RF
3 Vrms
IEC 61000-4-6
150 kHz to
80 MHz
Radiated RF
3 V/m
IEC 61000-4-3
80 MHz to
2.5 GHz
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 HVO-4000MT is used
exceeds the applicable RF compliance level above, the HVO-4000MT should be observed to verify normal
operation. If abnormal performance is observed, additional measures may be necessary, such as
reorienting or relocating the HVO-4000MT.
b Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.
Compliance
level
Portable and mobile RF communications equipment
should be used no closer to any part of the HVO-
4000MT, including cables, than the recommended
separation distance calculated from the equation
appliance to the frequency of the transmitter.
Recommended separation distance
d = 1.2 √P
3 Vrms
d = 1.2 √P 80 MHz to 800 MHz
3 V/m
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,
should be less than the compliance level in each
frequency range.
Interference may occur in the vicinity of equipment
marked with following symbol:
6
Electromagnetic environment-guidance
b
a
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