Sony LMD-3251MT Mode D'emploi page 22

Guidance and manufacturer's declaration – electromagnetic immunity
The LMD-3251MT is intended for use in the electromagnetic environment specified below. The customer
or the user of the LMD-3251MT should assure that it is used in such an environment.
Immunity test
Conducted RF
IEC 61000-4-6
Radiated RF
IEC 61000-4-3
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 LMD-3251MT is used exceeds the applicable RF compliance level above, the
LMD-3251MT should be observed to verify normal operation. If abnormal performance is observed,
additional measures may be necessary, such as reorienting or relocating the LMD-3251MT.
b Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.
6
GB
IEC 60601 Compliance
test level level
3 Vrms 3 Vrms
150 kHz to
80 MHz
3 V/m 3 V/m
80 MHz to
2.5 GHz
Electromagnetic environment – guidance
Portable and mobile RF communications
equipment should be used no closer to any part
of the LMD-3251MT, 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
d = 1.2 √P 80 MHz to 800 MHz
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
b
frequency range.
Interference may occur in the vicinity of
equipment marked with following symbol:
53
a