Recommended Separation Distance - Sony HMM-3000MT Instructions D'utilisation

Guidance and manufacturer's declaration – electromagnetic immunity
The HMM-3000MT is intended for use in the electromagnetic environment specified below. The customer or
the user of the HMM-3000MT should assure that it is used in such an 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 HMM-3000MT is used exceeds the applicable RF compliance level above, the HMM-3000MT should
be observed to verify normal operation. If abnormal performance is observed, additional measures may be
necessary, such as reorienting or relocating the HMM-3000MT.
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
HMM-3000MT, 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:
Electromagnetic environment – guidance
b
a
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